RU3981U1 - PIPE TRANSITION (OPTIONS) - Google Patents

Abstract

1. A pipe passage containing flanges, characterized in that it contains a pipe socket made of nodular cast iron, and the flanges are connected to the socket and pipe ends of a pipe socket made of nodular cast iron. The transition according to claim 1, characterized in that the flanges are connected to the ends of the pipe socket of cast iron with spherical graphite by lap welding. A pipe transition containing flanges, characterized in that it contains two pipe sockets made of nodular cast iron, the socket end of one of which is butt-welded to the pipe end of the other. 4. A pipe transition containing flanges, characterized in that it contains two pipe sockets of the same size from spheroidal cast iron, the pipe ends of which are connected by butt welding, and a metal ring connected by butt welding to the butt end of one of the sockets of cast iron with spherical graphite. 5. A pipe transition according to one of claims 1 to 4, characterized in that in the pipe socket of cast iron with spherical graphite, the internal diameter of the socket end is not less than the internal diameter of the lock groove for this socket.

Description

Pipe transition (options)

The utility model relates to connecting parts of pipelines and can be used to connect pipes with different sizes.

During the construction of pipelines, it is often necessary to connect pipes of different sizes. For this purpose stamped, stamp-welded, seamless drawn conical transitions are used (see, I.A.Shmelev and others. Arc welding of steel pipe structures, M. Mechanical Engineering, 1985, p. , 10 ,,, 14). All known, industrially manufactured pipe transitions e; of one pipe size to another are made of various steel grades and are intended for steel pipelines, therefore their use in the construction of pipelines from x; hunny tube elements are naturally difficult.

Known pipe sockets for weldless connection of cast iron pipes (see technical conditions. High-pressure pressure pipes, TU-14-154-23-90 g, p. 5. ,, 7). A characteristic feature of these sockets made of nodular cast iron by centrifugal casting is that the end of the socket end of one pipe size (external and internal diameters) overlaps the end dimensions of the pipe part of another pipe size.

The purpose of creating a utility model is to ensure the possibility of connecting pipes of various sizes of cast iron with spherical graphite. This goal is achieved by the fact that the pipe passage,

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okoneksheshmi pipe socket made of cast iron with spherical graphite welding. The flanges are connected to the socket and pipe ends of a spigot of a cast iron with spherical graphite. The pipe transition contains two pipe spigots of cast iron with spherical graphite, the socket end of one of which is butt-welded to the pipe end of the other. The pipe passage contains two pipe sockets of the same size from spheroidal cast iron, the pipe ends of which are connected by butt welding and a metal ring connected by the butt welding to the socket end of one of the pipe sockets of cast iron with spherical graphite. The bore diameter of the socket end of the pipe socket of cast iron with spherical graphite is greater than or equal to the inner diameter of the lock groove for this socket.

The authors are not aware of the source of information that would describe a pipe transition from one size to another containing a pipe socket made of nodular cast iron, therefore the technical solutions they claimed meet the patentability criterion of Novelty and may be covered by a utility model certificate.

The utility model is illustrated by drawings and a table.

On Fig, 1..4 shows the possible design of pipe transitions, performed using the claimed technical solutions.

In FIG. 5 shows a drawing of a pipe socket made of cast iron with

spherical graphite according to TU 14-154-23-90

The table shows the dimensions of the pipe transitions. In FIG. 1..5 in numbers and letters indicate:

 Jtfg jeitob V 3- metal ring; 4 - bell-shaped end of a pipe bell; 5-pipe end of the pipe bell; 6- weld; the outer diameter of the socket end of the pipe socket; the outer diameter of the pipe end of the pipe socket; S the thickness of the wall of the bell end: pipe bell; 5 - wall thickness of the pipe end of the pipe socket; L is the length of the passage of the pipe passage; / is the width of the metal ring; inner diameter of the lock groove; ..., / - internal linear dimensions of the pipe bell; /, (are the external linear dimensions of the pipe socket; ДJ ,,, Дg are the internal radial dimensions of the pipe socket; / C ... are the radii of rounding of the pipe socket. We will consider examples of the implementation of the claimed technical solutions using pipe pipes for 100 mm, 150 mm, and 200 mm Pig-iron cast iron pipe The flange transition from 0 200 mm to 0 150 mm (Fig. I a) contains a pipe bell for a pipe 0 150 mm to a socket end 4 of which a flange from article 20 is welded with a nominal diameter of 200 mm and to the pipe end a flange from station 20 is welded with a catch diameter m 150 mm, Flange transition from 0 250 mm to 0 150 mm (figL b) contains a pipe bell 0 200 mm to the pipe end which is welded with its bell end pipe bell 0 150. mm Flange from st.20 with a nominal diameter of 250 mm is welded to the socket end of the pipe socket 0 200 mm, and a flange with a nominal diameter of 150 mm is welded to the pipe window of the pipe 3

bell 0 150 mm. The bell-to-flange transition from 0 2СУ mm to 150 mm (Fig. 2 a) contains a 0 200 mm pipe bell, to the pipe end of which a 150 mm pipe bell is welded to its pipe end, to which pipe flange is welded from article 20 with a conditional diameter 150 mm

The bell-to-flange transition from 0 250 mm to 0 150 mm (Fig. 2 b) contains a pipe bell 0 250 of a pipe end which is welded with its bell end to a pipe bell 0 200 of a pipe end which is welded with its bell end to a pipe bell of 0 150 mm. To the pipe end of the pipe socket 0 150 mm, a flange from st.

The bell-shaped transition from 0 150 mm to 0 100 mm (Fig. 3 a) consists of a pipe bell 0 150 mm, to the pipe end of which a pipe bell 0 100 mm is welded with its bell end. To the pipe end of a pipe socket 0 100 mm, a pipe tip of another pipe socket 0 100 mm is welded.

The bell-shaped transition from 0 200 mm to 100 mm (Fig. 3 b) consists of a pipe bell of 0 200 mm, to the pipe end of which a bell-shaped end of the pipe bell of 0 150 mm is welded. To the pipe end of a pipe socket 0 150 mm, the socket end of a pipe socket 0 100 mm is welded to which the pipe end of another pipe socket 0 100 mm is welded.

The bell-to-smooth end transition from 0 150 mm to 0 100 mm (Fig. 4 a) contains a 0 100 mm pipe bell to the bell end of which a metal ring with a nominal diameter of 150 mm is welded, and another 0 100 mm pipe bell is welded to the pipe end.

The bell-to-smooth end transition from 0 200 mm: to 0 100 mm contains a pipe bell 0 150 mm, a metal ring with a nominal diameter of 200 mm is welded to the bell-shaped window and a bell-shaped part of the pipe bell 100 mm is welded to the pipe part. To the pipe part of a pipe socket of 0 100 mm, the pipe part of another pipe socket of 0 100 mm is welded.

Welding of butt and fillet welds in the manufacture of transitions is carried out using nickel-based wire and using manual argon-arc welding with a non-consumable tungsten electrode or using semi-automatic welding in a argon medium with a consumable electrode - nickel-based wire 0 1.2 mm.

Manufactured in accordance with the claimed technical solutions, pipe transitions ensure the connection of cast iron pipes with spherical graphite of various standard ratings. The connection is possible flanged, possibly bell-shaped, possibly welded, which makes it possible to widely use nodular cast iron pipes with high corrosion resistance and strength in the construction of pipelines.

Claims (5)

1. A pipe passage containing flanges, characterized in that it contains a pipe socket made of nodular cast iron, and the flanges are connected to the socket and pipe ends of a pipe socket made of nodular cast iron.  2. The transition according to claim 1, characterized in that the flanges are connected to the ends of the pipe socket of cast iron with spherical graphite by lap welding.  3. A pipe passage containing flanges, characterized in that it contains two pipe sockets made of nodular cast iron, the socket end of one of which is butt-welded to the pipe end of the other.  4. A pipe transition containing flanges, characterized in that it contains two pipe sockets of the same size from spheroidal graphite iron, the pipe ends of which are connected by butt welding, and a metal ring connected by butt welding by the butt end of the socket of one of the cast iron sockets with spherical graphite. 5. A pipe transition according to one of paragraphs 1 to 4, characterized in that in the pipe socket of cast iron with spherical graphite, the internal diameter of the socket end is not less than the internal diameter of the lock groove for this socket.