RU223529U1 - External eccentric pipe centralizer - Google Patents

Abstract

The utility model relates to devices used in the construction and repair of pipelines to ensure alignment of pipe ends during welding, and solves the problem of increasing ergonomic characteristics while simplifying the process of centering pipes for welding. The technical result when using an external eccentric centralizer for pipes is to ensure fixation of the ends of the pipes and simplify the process of setting the required gap between the ends of the pipes when centering for welding. An external eccentric centralizer for pipes with a spacer in which an adjusting pin is mounted with the possibility of its placement in the joint between the ends of the pipes being welded to ensure a gap for welding, meets the stated requirements for both installation safety and technical suitability. There is no need for additional measuring tools when setting the welding gap.

Description

Field of technology to which the utility model relates

The utility model relates to devices used in the construction and repair of pipelines to ensure alignment of pipe ends during welding, and solves the problem of increasing ergonomic characteristics while simplifying the process of centering pipes for welding.

State of the art

The prototype is an external pipe centralizer [1] (patent RU 140080 U1), containing sections with stops, the first ends of each section are connected by a connecting device, the second ends of each section are connected by an earring attached to the first section, through a hook mounted on the end of another section, to adjustable stops are welded to the sections, characterized in that the connecting device consists of two axes welded to the sections with holes into which tightening bolts are threaded; the centralizer is equipped with removable adjustable stops. Adjustable stops are welded around the perimeter of the sections, and the device is also equipped with removable stops, which are installed if necessary in the right places. The centralizer can consist of two, three or four (depending on the diameter of the pipe being centered) sections connected by axles and hooks.

The disadvantages of this device are:

the complexity of setting the required gap between the ends of the pipes when centering for welding, the use of additional measuring devices;

lack of ability to set the required gap between the ends of the pipes while simultaneously fixing the pipes.

Disclosure of the essence of the utility model

The objective of the claimed utility model is to ensure alignment of the pipe ends during welding, as well as to reduce the labor intensity of centering.

The technical result when using an external eccentric centralizer for pipes is to ensure fixation of the ends of the pipes and simplify the process of setting the required gap between the ends of the pipes when centering for welding.

The problem is solved, and the technical result is achieved through the use of an external eccentric centralizer for pipes, containing supports and spacers mounted on the supports, with each spacer containing a base secured to the support by means of two bolts; a control pin is mounted in the center of the spacer on its outer side, fixed with a clamp, with the possibility of placing a pin in the joint between the ends of the pipes being welded to provide a gap for welding.

Brief description of drawings

The essence of the utility model is illustrated by graphic materials, where

fig. 1 - external eccentric centralizer for pipes assembled;

fig. 2 - spacer on the external eccentric centralizer for pipes with an adjusting pin during operation;

fig. 3 - spacer for external eccentric centralizer for pipes with an adjusting pin,

where 1 is the centralizer;

2 - spacer (factory);

3 - support;

4 - base;

5 - adjusting pin;

6 - clamp;

7 - centered pipes;

8 - bolt.

Implementation of a utility model

An external eccentric pipe centralizer works as follows: a base (4) is installed on one of the supports (3) instead of a spacer (factory) (2) of the centralizer (1), then the base (4) and support (3) are tightened together with two bolts ( 8), then the adjusting pin (5) is installed in the base (4), then the adjusting pin (5) is fixed with a clamp (6), then the centralizer (1) is installed at the junction of the centered pipes (7), the centralizer (1) is installed in this way so that the adjusting pin (5) is located at the junction between the ends of the pipes (7), then the centralizer (1) is tightened, then the joint of the pipes (7) is tacked using electric welding from several sides, then the centralizer (1) is disassembled, and welding work is performed welded joint. The thickness of the control pin (5) at the base is selected depending on the welding method used and the diameter of the welding material in accordance with STO Gazprom 2-2.2-136-2007 (clause 10.2.24, table 10.1).

During installation, it was confirmed that the external eccentric pipe centralizer meets the stated requirements for both installation safety and technical suitability. The process of centering and setting the required gaps for welding has been significantly simplified. There is no need to use additional measuring tools when setting the welding gap.

Sources:

[1] Patent RU 140080 U1 “External pipe centralizer.”

Claims (1)

An external eccentric centralizer for pipes, containing supports and spacers mounted on the supports, characterized in that each spacer contains a base secured to the support by means of two bolts, while in the center of the spacer, on its outer side, an adjusting pin is mounted, fixed with a clamp, with the possibility of placing the pin at the joint between the ends of the pipes being welded to provide a gap for welding.