RU200293U1 - Flange stripper - Google Patents

Abstract

The utility model relates to pipeline transport, to the oil and gas treatment system, in particular, it is used for stripping flanges in the field. The device for stripping flanges includes a metal bus. The metal bus is made of a wide section with a hole on one side. The hole diameter corresponds to the diameter of the flange fastener. And on the other side of the metal tire there is a fastening covered with a rubberized material, which ensures the fixation of the grip during operation. The side sections of the metal tire are stripped to a mirror surface. On the end surface of the metal tire, the blade is sharpened at an angle of 45 °. The simple design of the device allows you to clean and remove the residual material of the wafer gaskets from the pipeline flanges with a minimum investment of time, money, without creating an emergency. 2 ill.

Description

The utility model relates to pipeline transport, to the oil and gas treatment system, in particular, it is used for stripping flanges in the field.

When carrying out maintenance of process equipment and pipelines to replace wafer gaskets, and when installing blank inventory plugs, problems arise when the gasket material sticks to the flange mirror and becomes difficult to remove due to the limited space between the flanges. Often times, the gasket breaks or tears when removed, leaving the stuck parts in place as if glued. During assembly, in order to avoid leakage of medium through the flange connection, it is necessary to completely and thoroughly remove all residual gasket material from the flange mirror.

In practice, to clean the flanges, a section (coil) of the pipe is cut off together with the flange, after which the surface is cleaned using a grinder with a brush head or by heat treatment with an open flame. To perform, additional work is required (cut, a new weld to restore the connection).

Also, heat treatment with an open flame is used to clean the flanges. In order to avoid ignition, it will be necessary to additionally install plugs on the nearest located flange pairs in the desired area where work will be carried out, which will also create additional losses of working time.

The technical task is to create a device that is simple in design and in use for stripping and removing residual material of inter-flange gaskets from pipeline flanges with a minimum investment of time, money, without creating an emergency. With this device, the flange surface will acquire a clean surface.

The technical problem is solved by a device for stripping flanges, which includes a metal tire made from a wide section with a hole on one side, and on the other hand, a fastener is made covered with a rubberized material that ensures the grip is fixed during operation, a blade is sharpened at an angle of 45 ° on the end surface of the tire ...

What is also new is that the side sections of the metal tire are brushed to a mirror-like surface.

FIG. 1 shows a device for stripping flanges .

FIG. 2 shows the attachment of the device to the flange.

The device for stripping flanges (Fig. 1) includes a metal bus 1.

The metal bus 1 is made of a wide area 2, for example, 40 mm wide and 4-5 mm thick, with a hole 3 on one side, for example, for a pin or bolt. The hole diameter 3 corresponds to the diameter of the fastener 4 of the flange 5.

And on the other side of the metal tire 1, a fastener 6 is made, covered with a rubberized material, which ensures the fixation of the grip during operation.

The side sections of the metal bus 1 are cleaned to a mirror surface. On the end surface 7 of the metal bus 1, the blade is sharpened at an angle of 45 °.

The flange stripper works as follows.

At the flange connection, the fastening elements 4 are loosened, and if necessary, some are removed altogether, after which a spreader (mechanical or hydraulic) is installed and with its help a gap is created, which is necessary for installing a device for stripping flanges. In the hole on the flange 5 (in Fig. 2), which is intended for the fastening element 4, a device for cleaning flanges with a washer (not shown in Fig. 2) is installed between the metal bus 1 and the flange 5, after which it is tightened, the joint gap is reduced. Removal and cleaning of the residual cushioning material is carried out by creating forces on the fastening element 4 of the device by pressing up and down.

To control and inspect the surface of the mirror of the flange 5, after cleaning, the fastening element 4 is loosened. If necessary, the cleaning operation is repeated until the desired result is achieved.

If this work is carried out on flange pairs with large diameters, then it is necessary to use a device for stripping flanges with a metal bus 1 of the appropriate size, it will also be necessary to perform manipulations to rearrange the device, and perform stripping both down and up.

The simple design of the device allows cleaning and removal of residual material of interflange gaskets from pipeline flanges with a minimum investment of time, money, without creating an emergency.

The flange stripping device was used during repair work at the Sarabikulovo super-viscous oil treatment unit.

Claims (2)

1. A device for stripping flanges, including a metal tire made of a wide section with a hole on one side, and on the other side, a fastener is made covered with a rubberized material that provides fixation of the grip during operation; on the end surface of the tire, a blade is sharpened at an angle of 45 °. 2. Device for stripping flanges according to claim 1, characterized in that the side sections of the tire are stripped to a mirror surface.

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