SU768624A1 - Apparatus for assembling and disassembling fasteners of pressure vessel flange connections - Google Patents

Description

The invention relates to devices intended for the mechanization of installation and repair work of apparatuses and pipelines in the chemical,. Petrochemical, nuclear and other industries.

A device is known for loading fasteners of flange joints of pressure vessels. A disadvantage of the known device is the design complexity and increased metal consumption of the vessel, since the "hydraulic power unit is located directly in the lid of the vessel.

A device is known for assembling and disassembling fasteners for flanged joints of "pressure vessels with power hydraulic cylinders placed on a traverse in which openings are made for passage of shanks of fasteners. The individual loading of each fastener does not “ensure their uniform loading and increases the time of disassembling and assembling the connection.

The purpose of the invention is the provision of uniform loading and increase productivity.

This goal is achieved by the fact that the traverse is made in the form of a ring and has cylindrical recesses evenly spaced around its perimeter with its axial through hole for supplying process liquid under pressure, which are hydraulic cylinders in which 5 pistons with rods abutting against the flange are installed. To ensure the possibility of assembling and disassembling flange joints of any design, the ring is made integral., ⁰ In FIG. 1 shows the proposed device, a General view; in FIG. 2 is a plan view.

The device consists of a traverse 1, in which are made. Holes 2 for passage 5 of the shanks of the fasteners 3, which are connected to the traverse 1 with the help of nuts

4. Between the holes 2 in the body of the beam 1, there are made “cylindrical grooves 5 (hydraulic cylinders) with through holes 0 for supplying the process fluid under pressure (not shown in the drawings). Pistons β are installed in cylindrical recesses 5 with “rods 7 abutting against flange 8.

The device operates as follows.

. “After installing the flange 8 on the body of the vessel 9 on the shanks of the studs 3, a crosshead .1 is installed and fastened with nuts 4.

Technological 768624 fluid is supplied to the hydraulic cylinders 5, there is no flow of the flange 8 and the vessel body ^^^ Жие · studs 3. Between the nut <10 and the flange 8, a gap is formed, which is selected by turning the nut (the nut is unscrewed when dismantling the connection). If there are any cylinders attached to the cylinder, the mounting fasteners are also reset and the fastening parts are removed with the required force (during disassembly, they are “unloaded”). ~ '

For intermediate flange connections or flanges of complex configuration ......... the beam 1 is a composite .......

Claims (2)

The claims. 1. Device for assembling and disassembling ..... fasteners ’parts for flanged joints of pressure vessels containing ~ traverse with openings for the passage of tailings ·“ в reinforcement * fasteners and hydraulic cylinder, different pzh. that, for the purpose of both '' 'STGY'ёnya r'a * in some load and uve' '' ^ lycheёyya'11'roТ1ЗОдпителности, · the traverse is made. in the form of a ring '-' 'has evenly spaced' around the perimeter between its 5 holes “cylindrical recesses with an axle”, “vym ..... through hole for supplying the process fluid under pressure, which are“ hydraulic hydraulics; in which ‘pistons with rods abutting against the flange are installed. - 2. The device according to τι. 1, on the other hand ..... with the fact that, in order to ensure the possibility of assembling and disassembling flange connections of any configuration, the ring is made. 15 clearly composite. .