RU174525U1 - DEVICE FOR LIQUID INJECTION IN A GAS PIPELINE - Google Patents

Abstract

The utility model relates to the field of operation of equipment for compressed gases and can be used in gas, oil and other industries. The technical problem of this utility model is to increase the reliability of the device by minimizing the likelihood of clogging of the spray module. The essence of the utility model: a device for injecting liquid the gas pipeline includes a pipe with an external thread and with a removable protective cap at its upper end, a shut-off element for supplying a sprayed liquid, through a fitting to a side hole made in the middle of the nozzle, which communicates with radial holes made in the groove of the nozzle body located in the nozzle cavity, which communicate with the inner cavity of the nozzle body with an annular cavity formed between the outer surface of the nozzle body and the inner surface of the nozzle, and a spray module, according to a utility model, it is equipped with a filter located in the cavity of the nozzle body and installed respectively in the upper and lower parts the nozzle of the nozzle with a decompression valve and ball spring check valve, while the spray module is equipped with a safety filter, a flow distributor with axial and radial openings and a centrifugal type sprayer containing a swirl chamber, tangential inlet channels and a nozzle, and the axial and radial openings of the flow distributor communicate with tangential spray channels. Achievable technical result consists in the formation of a fine torch formed in the process e the expiration of a thin film from the nozzle of the spray module, and providing the possibility of replacing the filter under conditions of excessive pressure in the gas pipeline.

Description

The utility model relates to the field of operation of equipment for compressed gases and can find application in gas, oil and other industries.

A device is known for injecting liquid into a gas pipeline (RU 111246, 2011), including a pipe with a flange rigidly fixed to the gas pipe perpendicular to its axis. A hollow rod with a replaceable nozzle mounted on the lower end is concentrically placed inside the nozzle. On the flange, stop valves and a mechanism for moving the hollow rod are sequentially installed, comprising a cylindrical body with two symmetrically made slotted windows, an upper cover with a travel assembly including a retractable spindle, and a lower cover with a stuffing box. Between the sliding spindle and the hollow rod there is a pipe elbow rigidly connected to them, and the pipe elbow is connected hydraulically to the hollow rod. A cylindrical nozzle is installed in the side opening of the tube square connected to a fluid supply unit consisting of two shut-off valves connected in series and a detachable connection between them.

The disadvantages of the known device are the complexity of the design, large dimensions and low reliability under conditions of high gas pressure in the gas pipeline due to the presence of a movable stuffing box seal.

Also known is a nozzle for spraying liquids (RU 155230, 2014), comprising a housing located in a flange pipe welded to the gas pipeline and a spray module welded to the housing, including a tip with a spray chamber and an angled bevel, a pressure sleeve and a nozzle.

The disadvantages of the known device is the difficulty of servicing the device, due to the need to disconnect the supply pipe during installation and dismantling of the spray module.

Of the known devices, the closest to the proposed technical essence and the achieved result is a device for corrosion monitoring, including the injection of chemicals into a vessel or pipeline under gas pressure, including a pipe with an external thread and with a removable protective cap on its upper end, a shut-off a body for supplying a sprayed liquid, connected through a fitting to a side hole made in the middle of the pipe, which communicates with the radial holes made in the groove of the nozzle body located in the cavity of the nozzle body, which communicate with the inner cavity of the nozzle body with an annular cavity formed between the outer surface of the nozzle body and the inner surface of the nozzle, and a spray module located at the end of the nozzle body in the form of an injection tube with a beveled open end (US 5653477, 1997).

The disadvantages of the known device include low reliability in the case of the use of spray modules with small passage channels that provide fine atomization of the liquid due to clogging, and, as a consequence, the need to remove the housing with the spray module in the event of clogging of its channels.

The technical problem of this utility model is to increase the reliability of the device by minimizing the likelihood of clogging of the spray module.

This problem is solved due to the fact that a device for injecting liquid into a gas pipeline, including a pipe with an external thread and with a removable protective cap at its upper end, a shut-off element for supplying sprayed liquid, connected through a fitting to a side hole made in the middle of the pipe, which communicates with radial holes made in the groove of the nozzle body located in the cavity of the nozzle body, which communicate with the inner cavity of the nozzle body with an annular cavity formed between according to the utility model, it is equipped with a filter located in the cavity of the nozzle body and installed respectively in the upper and lower parts of the nozzle body with a decompression valve and a ball spring check valve, while the spray module is equipped with a safety a filter, a flow distributor with axial and radial openings and a centrifugal atomizer containing a swirl chamber, input tangents flax channels and a nozzle, wherein an axial and radial holes communicating with the flow distributor channels tangential spray.

Achievable technical result consists in the formation of a fine torch formed during the expiration of a thin film from the nozzle of the spray module, and providing the possibility of replacing the filter under conditions of excessive pressure in the gas pipeline.

The invention is illustrated in the drawing, where in FIG. 1 shows a general view of the device, and in FIG. 2 - section along aa.

A device for injecting liquid into a gas pipeline contains a pipe (1) mounted on the gas pipeline with an external thread (2) and with a removable protective cap (3) at its upper end, a shut-off element (4) for supplying the sprayed liquid, connected through a nozzle (5) to a side hole (6) made in the middle of the pipe (1). In the cavity of the pipe (1) with the help of a cylindrical thread (7), the nozzle body (8) is placed, in the groove (9) of which there are made radial holes (10) communicating the internal cavity (11) of the nozzle body (8) with the annular cavity (12) formed between the surface of the groove (9) of the nozzle body (8) and the inner surface of the pipe (1). The nozzle body (8) contains a rubber sealing ring (13) and a seal (14) having a conical surface for interfacing with the inner cone of the nozzle (1). At the end of the nozzle body (8), a spray module (15) is placed.

The nozzle body (8) has a filter (16) installed in its cavity (11) using a sleeve (17). In the upper part of the nozzle body (8) there is a decompression valve (18) with a locking element (19), and in the lower part there is a ball spring check valve (20), the ball (21) of which is pressed against the seat (22) by a spring (23) with using the threaded sleeve (24).

A safety filter (26) is placed in the cavity (25) of the spray module (15), under which a flow distributor (27) with axial (28) and radial (29) holes and a centrifugal type sprayer (30) containing a swirl chamber (31) are installed ), the tangential inlet channels (32) and the nozzle (33), and the axial (28) and radial (29) openings of the flow distributor (27) communicate with the tangential channels (32) of the atomizer (30). The sprayer (30) is pressed by the flow distributor (27) to the gasket (34).

A device for injecting liquid into a gas pipeline works as follows.

The liquid to be injected is supplied to the shut-off element (4), then through the nozzle (5) and the radial hole (6) in the pipe (1) it enters the annular cavity (12), from where it passes through the radial holes (10) into the internal cavity (11) ) nozzle body (8). After passing through the filter (16) and squeezing the ball (21) of the check valve (20), the fluid enters the cavity (25) of the spray module (15). Having passed through the safety filter (26), the axial hole (28) and the radial holes (29) of the distributor (27) and the tangential channels (32) of the atomizer (27), the fluid enters its twisting chamber (31), where its intense rotational movement with a gradual outflow from the nozzle (33) in the form of a thin film that breaks into individual small droplets forming a finely dispersed spray torch in the gas pipeline.

If it is necessary to replace the used filter (16), close the shut-off element (4), remove the protective cap (3) and relieve pressure in the internal cavity (11) of the nozzle body (8) by unscrewing the shut-off element (19) of the decompression valve (18) by half a turn . After that, the decompression valve (18) is unscrewed from the nozzle body (8), the used filter (16) is removed and a new one is inserted instead. In this case, the non-return valve (20) prevents gas from entering the gas pipeline into the cavity (11) of the nozzle body (8), and the safety filter (26) prevents mechanical impurities that accidentally appear when the filter is removed into the cavity (25) of the spray module (15). (16).

Then, the decompression valve (18) is mounted in place, it is closed by rotation of the locking element (19), and a protective cap (3) is installed on the nozzle (1).

Thus, the proposed design of a device for injecting liquid into a gas pipeline increases the reliability of operation by minimizing the likelihood of clogging of the spray module, as well as the ability to replace the filter under conditions of excessive pressure in the gas pipeline.

Claims (1)

A device for injecting liquid into a gas pipeline, including a pipe with an external thread and with a removable protective cap at its upper end, a shut-off element for supplying sawn liquid, connected through a fitting to a side hole made in the middle of the pipe, which communicates with radial holes made in a groove located in the cavity of the nozzle body nozzle, which communicate with the inner cavity of the nozzle body with an annular cavity formed between the outer surface of the nozzle body and the inside the lower surface of the nozzle, and a spray module, characterized in that it is equipped with a filter located in the cavity of the nozzle body and installed respectively in the upper and lower parts of the nozzle body with a decompression valve and a ball spring-loaded check valve, while the spray module is equipped with a safety filter, a flow distributor with axial and radial openings and a centrifugal atomizer containing a swirl chamber, tangential inlet channels and a nozzle, moreover, axial and radial tverstiya flow distributor communicate with tangential channels sprayer.

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