RU191332U1 - A device for collecting fluid from a flange joint of the pipeline - Google Patents

Abstract

The proposal relates to the oil and gas and / or chemical industry, namely, devices for draining fluid from the external joints of pipes or hoses and draining it into the drainage system. A device for collecting fluid from the flange joint of the pipeline, including a box with end holes, securely fixed with a latch on the outside of the flanges and provided with a bottom through hole with a tube for draining the fluid collected from the pipeline. The box is made rectangular with rectangular end openings for the pipeline, and the latch is in the form of a hollow rectangle open from below, made with the possibility of fixing on top of the box and equipped with a rectangular slot at the top of the flange joint. The slot is configured to insert a flat plug with a chipper for input between the flanges. Threaded holes for bolts are made in the side walls of the box, with conical surfaces on the inside for expansion when screwing the flanges in. The proposed device for collecting fluid from the flange joint of the pipeline is simple and reliable and also provides safe mechanical sliding of the flange joint in the joint zone after installation. 4 ill.

Description

The proposal relates to the oil and gas and / or chemical industry, and in particular to devices for draining liquid from the external joints of pipes or hoses and draining it into the drainage system.

A device for collecting aggressive liquids from joints of pipelines or valves (US patent No. 5312137, IPC F16L 23/16, F16L 55/168, publ. 05.17.1994), consisting of the first and second casing elements, are detachably connected to form a chamber in the assembled position around the pipe connection, the chamber contains at least one hole that has a size and shape to form a vapor tight seal around the pipe, while the protective shield includes an outlet for discharging any liquid that may accumulate in the chamber, moreover, the measuring device may not communicate with the inside of the camera to determine the physical conditions in it.

A device for collecting aggressive liquids from the joints of pipelines or valves (US patent No. 5489124, IPC F16L 23/16, F16L 55/168, publ. 02/06/1996), consisting of two parts that provide a sealed cavity around the protected site and have a corrosion-resistant layer, which provides a reduction in the excess pressure of the liquid during its leakage, while the device is configured to allow authorized discharge of the outgoing liquid using fittings installed for these purposes.

The disadvantages of both analogues are the difficulty in manufacturing and installation and, as a consequence, the high cost of the device itself and its maintenance.

The closest is a device for collecting liquid from a pipeline (patent for PM RU No. 147229, IPC F16L 55/00, published on 10/27/2014 in Bull. No. 30), characterized in that it is a semi-cylindrical box made of sheet metal, on the side the walls of which on one axis are made of semicircular grooves, providing the possibility of a snug fit of the semicylindrical duct to the body of the pipeline, at the edges of the arcuate base of the semicylindrical duct there are made L-shaped protrusions, which allow mounting under esnyh cords, wherein the arcuate base semicylindrical ducts has a through hole in an area which is attached a metal tube for connecting thereto a hose for draining fluid collected from the pipeline.

The disadvantages for this device are the manufacturing complexity associated with the need to manufacture a semi-cylindrical sheet metal duct with semicircular grooves at the ends, and unreliable fixation on the hanging cords, which can weaken during operation and rupture in the presence of mechanical damage.

A common drawback for all analogues is the lack of forced expansion of the joint after installation, which in case of sticking or welding together the flanges can lead to difficulties in draining the fluid from the pipeline or in the presence of a person before draining the explosive and / or aggressive fluid in the zone of possible discharge when manually acting on the joint when disconnected, which is unsafe for workers.

The technical task of the proposed utility model is to create a simple and reliable design of a device for collecting fluid from a flange joint of a pipeline, ensuring safe mechanical expansion of the flange joint in the joint zone after installation.

The technical problem is solved by a device for collecting liquid from a flange joint of a pipeline, including a box with end holes, securely fixed with a latch on the outside of the flanges and provided with a through hole from the bottom with a tube for draining the fluid collected from the pipeline.

New is that the box is made rectangular with rectangular end openings for the pipeline, and the latch is in the form of a hollow rectangle open from below, made with the possibility of fixing on top of the box and equipped with a rectangular slot made from above at the junction of the flanges, with the possibility of inserting a flat plug with a chipper for the input between the flanges, while in the side walls of the box made threaded holes for bolts having inside the conical surface for expansion when screwing the flanges.

In FIG. 1 shows a diagram of a device, a front view with an axial section.

In FIG. 2 shows a diagram of a device with a flange connection of a pipeline, a side view with an axial section.

In FIG. 3 shows a diagram of the device, front view.

In FIG. 4 shows a diagram of a device, a side view with a partial section.

A device for collecting fluid from the flange joint of the pipeline 1 (Fig. 1 and 2) includes a duct 2 with end holes 3, securely fixed by a latch 4 on the outside of the flanges 5 (shown conditionally) and provided with a through hole 6 from the bottom with a pipe 7 for draining collected from the pipeline 1 liquids. The box 2 is made rectangular with rectangular end openings 3 for the pipeline 1, and the latch 4 is in the form of a hollow rectangle open from below, made with the possibility of fixation (for example, bolts 8, latches, through holes with screws and nuts, etc. - not shown) on top of the box 2 and provided with a rectangular slot 10 at the junction 9 (FIG. 2) top of the flanges 5. The slot 10 is configured to insert a flat plug 11 (FIGS. 3 and 4) with a bump 12 for insertion between the flanges 5. In the side walls 13 (Fig. 1) boxes 2 made threaded holes 14 for bolts 15, having inside the conical surface 16 for expansion when screwing the flanges 5. To simplify installation, the cap 11 (Figs. 3 and 4) can be equipped with a handle 17 on top. Tube 7 (Figs. 1 and 2) for connecting to the drain pipe (not shown) can be made in the form of a standard threaded pipe with a lock nut 18, a pipe with a quick connection or the like. (in Figs. 1 and 2, the remaining compounds are not shown).

Technological connections and structural elements that do not affect the operability of the device are not shown or are conventionally shown in the drawings (Figs. 1-4).

The device operates as follows.

After stopping the pumping of liquid (oil, oil and gas, chemical products or the like) in pipeline 1 (Fig. 1 and 2), if necessary, dismantling a section of pipeline 1 or replacing a failed pipe pipeline 1, it is necessary to drain the remaining in the pipeline during disassembly 1 liquid in a special container or storage (not shown) to prevent the pumped liquid from entering open ground or gases into the atmosphere. To do this, the upper and lower bolts and nuts (not shown) securing the flanges 5 of the joint of the pipeline 1 to each other. On top of the flanges 5, a latch 4 is installed, into which the box 2 is inserted from the bottom with fixing, for example, bolts 8. From the bottom to the tube 7 by thread connect the drain pipe, fixing, for example, a lock nut 18. Through the end holes 3, unscrew the remaining bolts and nuts of the flanges 5.

In the case of sticking or welding (it happens very often) together of the flanges 5 into the side walls 13 (Fig. 1) of the box 2, the bolts 15 are screwed through the threaded holes 14, which, with their taper surfaces 16, push the flanges 5 apart in opposite directions at the joint 9 (Fig. 2 ) In this case, the liquid is drained through the through hole 6 with the tube 7 into the drain pipe.

In the case of increased residual pressure (which is rare) in the pipe 1 between the flanges 5 end-to-end 9 through the slot 10 of the retainer 4 insert a plug 11 (Fig. 3 and 4) with a chipper 12 using the handle 17, pressing the flanges 5 (Fig. 2) to the ends of the box 2 and excluding a strong uncontrolled outflow of fluid. The plug 11 (Fig. 3 and 4) is lifted by the handle 17 to partially open the pipe 1 (Fig. 1 and 2) and drain the liquid through the through hole 6 with the tube 7 into the drain pipe.

After draining the fluid, the bolts 8 are loosened, the retainer 4 and the box 2 are removed from the flanges 5, which are completely disconnected from each other. After unscrewing the bolts 15 (Fig. 1) to its original position, the device is ready to work with another flange joint (not shown).

Since the box 2 (Fig. 1 and 3) and the clamp 4 of the device consists entirely of rectangular elements, it is simply made of sheets and corners, and the presence of a rigid clamp 4 eliminates its destruction during operation and unauthorized separation of the flanges 5 with the filling of liquid from pipeline 1.

The proposed device for collecting fluid from the flange joint of the pipeline is simple and reliable and also provides safe mechanical separation of the flange joint in the joint zone after installation.

Claims (1)

A device for collecting liquid from a flange joint of a pipeline, including a box with end holes, securely fixed with a latch on the outside of the flanges and provided with a through hole from the bottom with a pipe for draining the fluid collected from the pipeline, characterized in that the box is made rectangular with rectangular end openings for the pipeline, and the latch - in the form of a hollow rectangle open from below, made with the possibility of fixation on top of the box and equipped with a rectangular slot at the top of the flange joint, Making a flat insertable plugs from baffle to enter between the flanges, wherein the side walls in ducts formed threaded bolt holes having a conical inside surface razdvizheniya when screwing the flanges.

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