RU177026U1 - PIPELINE SEALANT - Google Patents

Abstract

The utility model relates to pipeline transport of liquids and gases and is intended for temporary blocking of the pipeline during repair and restoration work or replacement of a defective area. The sealing device of the pipeline contains a sealing unit, containing from the ends two identical clamping disks with the possibility of mutual movement along the axis of rotation, and o-rings concentrically installed between them. The clamping force of the discs due to the translational movement of the threaded rod and the guide sleeve creates the effect of elastic extrusion and a proportional increase in the diameter of the sealing rings and, as a result, the tight fit of the latter to the inner wall of the pipeline. The device improves reliability and ease of use due to the repeated use and exclusion of pneumatic and hydraulic equipment.

Description

The utility model relates to devices for sealing the pipeline from the inside and can be used to temporarily block the pipeline during repair work or replacing a defective area.

A known method of repair work on the pipeline using temporary overlap, made in the form of a tampon-sealant (patent No. 2341721 publ. 20.12.2008). The disadvantages of this method are the need for adhesive bonding and tampon removal by dissolution with an organic solvent. The disadvantage of other sealing devices (patents No. 2221171 publ. 11/27/2004, No. 2293236 publ. 02/10/2007, No. 225482 publ. 01/27/2005, No. 2187744 publ. 08/20/2002) is the need to use sources of gas or liquid under pressure, blocking the pipeline in which it is produced by increasing the volume of the locking element.

Closest to the proposed utility model in technical essence, the analogues are “Pipeline sealing device” (patent No. 2534630 publ. 10.12.2014) and “Device for blocking the pipe outlet” (patent No. 10828 publ. 08.16.1999) containing a sealing unit and its drive unit. The disadvantages of analogues are the complexity of the design, operation and manufacture.

The analogue "Pipeline sealing device" (patent No. 2534630 publ. 10.12.2014) is taken as a prototype.

The objective of this utility model is to create a device with a simplified mechanical drive and a sealing system, for the manufacture of which maintainable and easy-to-use components are used.

The technical result is to increase the reliability and ease of use.

The technical result is achieved by the sealing device of the pipeline containing the sealing assembly and its mechanical drive, while according to the present utility model, the sealing assembly is made in the form of a pair of sealing rings mounted concentrically to the flow part of the pipeline, and the mechanical drive is made in the form of a rod with one fixed at one end thereof flywheel, and on the other end having conical disks, between the conical surfaces of which a pair of said o-rings is placed, one of the cone-shaped disks is fixed on the rod rigidly, and the other is mounted with the possibility of axial movement.

In FIG. the design of the proposed device placed in the pipeline is presented.

The sealing device of the pipeline contains the following structural elements:

1 - clamping nut;

2 - guide sleeve;

3 - clamping disk;

4 - fixed disk;

5 - flywheel;

6 - stock;

7 - sealing rings;

8 - fixing nut;

9 - conical shape of the surface of the disks;

10 - pipeline;

11 - welding butt;

12 - flange.

The sealing device of the pipeline contains a stem 6, on one side of which there is a sealing assembly made in the form of o-rings 7 mounted concentrically to the flowing part of the pipeline 10 between the conical surfaces 9 of the clamping 3 and the stationary 4 discs, on the other hand, a mechanical drive consisting of a clamping nut 1 screwed onto the threaded part of the rod 6 and attached to the end of the rod 6 of the flywheel 5. The rod 6 is inserted into the guide sleeve 2 located between the clamping nut 1 and the clamping disk 3. For fixing IG Petritskaya disc 4 at the end of the rod 6 is threaded locking nut 8. The surfaces of discs 3 and 4 are made in the form of a cone 9.

The operation of the proposed device is as follows.

When the clamping nut 1 is rotated, the guide sleeve 2 is translationally moving, while the clamping disk 3 moves to the fixed disk 4, which is fixed in a static position by means of the flywheel 5, the rod 6 and the fixing nut 8. The surfaces of the disks 3 and 4 are made in the form of a cone 9 , and due to the clamping force of the disks to each other, elastic extrusion of the rubber sealing rings 7 located between them occurs, which fit snugly against the inner wall of the pipeline 10, ensuring tightness. In places where the sealing rings 7 adhere to the pipeline 10, a sealing lubricant is used.

The novelty of the utility model lies in the fact that the developed design of the device makes it possible to ensure a tight fit of the sealing rings to the inner surface of the pipeline by squeezing them out from the inter-disk space, the pressing force of which is controlled by rotating the nut on the threaded rod element, which allows sealing when the pressure drops in the pipeline up to 1 MPa, sufficient for repair and restoration work with the possibility of its multiple use.

The manufacture of the proposed device is possible on a lathe, and does not require specialized conditions of the metalworking plant and highly skilled performer.

Claims (1)

A pipeline sealing device containing a sealing assembly and its mechanical drive, characterized in that the sealing assembly is made in the form of a pair of sealing rings mounted concentrically to the flow part of the pipeline, and the mechanical drive is made in the form of a rod with a flywheel fixed at one end thereof and at the other end having conical disks, between the conical surfaces of which a pair of said sealing rings is placed, wherein one of the conical disks is fixed to the rod rigidly, and goy installed with the possibility of axial movement.

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