RU201351U1 - Manual centralizer for pipes with a diameter of 6 to 14 mm for welding - Google Patents

Abstract

The utility model refers to ancillary equipment designed for centering steel pipes with a diameter of 6 to 14 mm for welding during the installation of pipelines, power plants, etc. The manual centralizer for pipes with a diameter of 6 to 14 mm for welding consists of two handles and clamps connected by a hinge. At the same time, strips are fixed at the ends of the handles, to each of which clamps are welded in the form of identical pairs of coaxially located jelly-shaped paws. The technical result of the proposed utility model is to improve the accuracy of centering pipes with a diameter of 6 to 14 mm for welding. 1 ill.

Description

The utility model refers to auxiliary equipment designed for centering steel pipes with a diameter of 6 to 14 mm for welding during the installation of pipelines, power plants, etc.

Known centralizer for small diameter pipes (analogue) (Product catalog [Electronic resource]: LLC "NGSK". Construction of pipelines // Centralizers // Centralizer for small diameter pipes. URL: http: //www.ngsgroup.ru/construction-pipelines / centrators / centralizer-pipes-small-diameter (date of access: 12.11.2018) [1], which is a hinge-screw device consisting of crimps, a screw, a crosshead, a nut and stoppers. The device is intended for outdoor installation of pipelines with a diameter of 25 to 112 mm.

The disadvantages of the analog include:

- laboriousness of centering pipes of small diameter for welding;

- closing part of the welded seam with a centralizer;

- inability to center pipes with a diameter of less than 25 mm.

Known centralizer-clamp TsS-3 (analog) (Product Catalog [Electronic resource]: LLC "Alkor". Equipment for the construction and repair of pipelines // Centralizers for connecting pipes for welding // Centralizer-clamp TsS-3. URL: http: //www.alkor-pipe.ru/11/3/134/161.html (date of access: 12.11.2018) [2], containing two handles connected through hinges with clamps at the ends, an adjusting screw and a release lever. for fixing round and tubular materials with a diameter of 10 to 70 mm.

The disadvantage of the analogue is the low accuracy of centering of small diameter pipes.

Known centralizer for connecting steel pipes, selected by the applicant as a prototype, which is a modification of cutting pliers, on the head parts of the cutting pliers is stationary placed round clamping hole, and elongated clamping handles are stationary on the lower parts of the clamping arms. The clamping hole made of steel pipe is additionally placed on the heads of the cutting pliers for attaching the steel pipe butt connector, the clamping force of the clamping hole is increased by lengthening the clamping arms, so the butt connectors of two pipes can be fastened together to maintain concentricity [PRC patent CN 202367395 U, IPC B23K 37/053, priority date 11/24/2011, publ. 08.08.2012].

The disadvantage of the prototype is the low accuracy of centering of small diameter pipes.

The technical result of the proposed utility model is to improve the accuracy of centering pipes with a diameter of 6 to 14 mm for welding.

The technical result of the utility model is achieved through the use of a hinge mechanism with clamps that allow manual centering of pipes with a diameter of 6 to 14 mm for welding.

The essence of the utility model is illustrated by the figure, which depicts a device consisting of two handles 1 connected to each other by a hinge 2, with strips 3 fixed at their ends, to which two pairs of clamps in the form of grooved paws 4 are coaxially welded (hereinafter - clamps). The principle of operation of the utility model is based on the use of a double lever mechanism, which increases and transfers the force applied to the handles 1 to the clamps 4. To increase the free space around the centered pipes 5, the clamps 4 are removed by means of strips 3 from the junction of the two handles, which is necessary for unhindered supply of welding equipment to the place of welding. The inner radius of the clamps 4 is matched to the outer radius of the mounted pipes 5 with a diameter of 6 to 14 mm.

The utility model works as follows. The centralizer with open clamps 4 is put on over the pipes 5 at their junction. By squeezing the handles 1 manually through the hinge 2, a force is transferred to the clamps 4, which allows the pipes 5 to be centered for their subsequent welding.

Thus, the utility model improves the accuracy of centering pipes with a diameter of 6 to 14 mm for welding.

The utility model was used in 2018 at the Arkaulovsky linear production department of main gas pipelines of Gazprom transgaz Ufa when welding pipes when connecting pipelines for supplying gas to valve control units, pressure measurement sensors, piping of pressure regulators and other devices and structures, where for strapping, pipes with a diameter of 6 to 14 mm are used, having established itself as a reliable and convenient auxiliary device.

Claims (1)

Manual centralizer for pipes with a diameter of 6 to 14 mm for welding, consisting of two hinged arms and clamps, characterized in that strips are fixed at the ends of the arms, to each of which clamps are welded in the form of identical pairs of coaxially located jelly-shaped paws.

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