SU1034891A2 - Apparatus for assembling/disassembling the fastenings of flange joints of high-pressure vessels - Google Patents

Abstract

l.yCTPOflCTBO FOR ASSEMBLY AND DISASSEMBLY OF FASTENING PARTS OF FLANGED CONNECTIONS OF HIGH-PRESSURE VESSELS by aut. St. to 768,624, wherein / that, in order to reduce razkyurov thrust rotsilindrov without decreasing them the loading capacity, it is provided with connecting rods screwed onto konEFG fasteners cups in dnokotoryh abut shtokk pistons and vsholneynymi with SCS aennymi vnuternnimi believe aches, support elements, one which rest against the flange, others are made with beveled external surfaces, wedge sukhari, installed with the possibility of movement on the scaled internal and external surfaces: takano and SYNOR elements and interacting with the connecting rods.

Description

2. The device according to Claim 1, which means that, in order to use the reactive force from the action of the hydraulic cylinders of fasteners, it is equipped with helical force bodies that interact with the bottom of the glasses and are installed in the threaded holes of the ring, the pistons of the hydraulic cylinders have axial holes for the passage of shanks. t g, and the number of screw power units and hydraulic cylinders, placed in the ring, is determined from the ratio:

.R-

the number of screw power bodies;

number of hydraulic cylinders; the bevel angle of the mating surfaces of the glass, wedge rusk and support element, rad.

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.

According to the main author. St. No. 768624 discloses a device for assembling and disassembling fasteners of flange joints of high-pressure vessels, containing a cross bar with holes and hydraulic cylinders, the cross bar is made in the form of a ring and has cylindrical undercuts uniformly around the perimeter between its holes with an axial through hole for supplying the process fluid under pressure, which are hydraulic cylinders in which pistons with rods are installed.

However, such a device must have as many hydraulic cylinders as fasteners need to be tightened, which significantly complicates the design of the device. In addition, considerable energy is required to obtain a given tightening force.

The aim of the invention is to reduce the size of the hydraulic cylinders without reducing their loading capacity and the use of reactive force from the action of the hydraulic cylinders of fasteners.

The goal is achieved in that the device for assembling and disassembling fasteners of high pressure flange connections contains a cross bar with holes and hydraulic cylinders, the cross bar is made in the form of a ring and has cylindrical undercuts uniformly around the perimeter between its holes with an axial through hole for supplying technological fluid under pressure, which are hydraulic cylinders in which

Pistons with rods are installed, fitted with grommets rolled onto the ends of fasteners, cups with piston rods resting against the bottom,

and made with beveled inside. They are knocked down with support elements, one ends of which abut the flange, others made with beveled outer surfaces, wedge crackers installed with the possibility of moving along the beveled inner and outer surfaces of the glasses and supporting elements and interacting with the rods .

5 In this case, the device, which are supplied with screw force bodies interacting with the bottom of the glasses, are installed in the threaded holes of the ring, the pistons of the hydraulic cylinders have axial holes for the passage of the shanks, and the number of screw power bodies and hydrocylinders placed in the ring are as follows: ratios:

o, 2g

where m is the number of screw power

organs;

- p - the number of hydraulic cylinders; 0 (L is the bevel angle of the mating surfaces of the cup, the wedge biscuit and the support element, rad.

FIG. 1 shows the device 5 in the interaction of rods with glasses, a longitudinal section; in figure 2. the same, with the interaction of screw power bodies with glasses, a longitudinal section, in FIG. 3 shows section A-A in FIG.

The device contains a yoke, made in the form of xzlc 1 with holes 2 and having cylindrical recesses 3 evenly spaced around its 5 holes 2, cylindrical recesses 3 with axial through hole 4 for supplying process fluid under pressure, which are hydraulic cylinders 5, in which are installed with rods 7. The STEO device is equipped with tammi 8, wrapped around. We put on the ends of the fasteners E, cups 10, the bottom of which is supported with the piston rods 7 of the pistons 6, and made with 11 bevelled inner surfaces, the supporting elements 12 some ends of which abut the flange 13, others - are made with the oblique outer 14 surfaces , wedge breadcrumbs 15, installed with the possibility of moving along the beveled inner II and outer 14 surfaces of the bells 10 and the supporting elements 12 and interacting with the rods 8, The device is equipped with an interaction with the bottom of the glasses 10 with screw-type power members 16, mounted in threaded wool x2. rings 1 pistons 6 hydraulic cylinders 5 have axial bores 17 for the passage of shanks 8 and 8, and the number of screw power bodies 16 and hydraulic cylinders 5 placed in ring 1 is determined from the following relationship: where m is the number of screw power bodies; p - the number of hydraulic cylinders; (L.- bevel angle of the mating surfaces of the cup, wedge rusk and support element, rad. The device is equipped with a pressure nut 18. The device (Fig. 1) works in a very narrow way. To the hydraulic cylinder 5 through the opening 4 the process liquid is supplied under which displaces the piston 6 downwards. The force from the pressure is transmitted through the cup 10 to the lateral surface of the wedge crackers 15. The pressure of the surfaces of the crackers 15, the cup 10 and the pressure nut 18 ensures the forwarding of the crackers 15 in the radial direction and the transfer of axial force through the pull of 8 onto the fastener 9. The ring 1 under the action of the reactive component peremetzavts5 up and with the help of the pull 8 and the nut 18 (in the center of Fig. 1) pulls the fastener 9. In the device (Fig. 2) from the pressure of the working fluid in the hydraulic cylinder 5, moving the piston B upwards, is transmitted to the nut 18 and by means of the pull 8 pulls out the fastener 9. The ring 1 under pressure of the reactive component moves downwards and the force is transmitted through the screw POWER 16 to the glass 10.and further to the wedge rusk 15, t gu 8, and then t on fastener 9. When the device is installed with fasteners located loaded with wedge crackers, under hydraulic cylinders, a significant decrease in the required pressure of the working fluid in hydraulic cylinders and a decrease in the tightening torque of fasteners is achieved, depending on the angle of the bevel angle of matching surfaces 1x surfaces of the glass, wedge rusk and support element. The total force developed by the hydraulic cylinders is sufficient for tightening fasteners, not loaded, with wedge crumbs. In the device (Fig. 2), the total force developed by the hydraulic cylinders is sufficient to tighten the fasteners loaded by the hydraulic cylinders and fasteners, Harpy aef ix with wedges. The application of the present invention allows essentially: to reduce the pressure of the working fluid in the hydraulic cylinders, thereby achieving a reduction in the required power of the pumps for supplying the process fluid and reducing the energy consumption for tightening fasteners of the flanges of high pressure vessels.

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Claims (2)

1. DEVICE FOR ASSEMBLY AND DISASSEMBLY OF FASTENING COMPONENTS OF HIGH VESSEL CONNECTIONS PRESSURES by ed. St. "I" 768624, 'characterized by the fact that, in order to reduce the size of the hydraulic cylinders without reducing their load capacity, it is equipped with rods that are screwed onto the ends of the fasteners, cups, the piston rods resting on the bottom of which are made with beveled inner surfaces of the net, supporting elements, some ends of which abut against the flange, others are made with beveled external surfaces, wedge sous ·. barriers installed with the ability to move along the beveled inner and outer surfaces of the glasses and supporting elements connecting with rods and interact Sae X 2. The device according to claim 1, comprising the fact that, in order to use reactive force from the action of the hydraulic cylinders of the fasteners, it is equipped with screw power elements interacting with the bottom of the glasses installed in the threaded holes of the ring, the pistons of the hydraulic cylinders have axial holes for the passage of the shanks <rods, and the number of screw power elements and hydraulic cylinders placed in the ring is determined from the following ratio: tn η = 0, b2 where w is the number of screw power organs; η is the number of hydraulic cylinders; (B is the bevel angle of the mating surfaces of the glass, wedge cracker and supporting element, rad.