SU1615588A1 - Arrangement for sealing vessels having flanges - Google Patents

Abstract

This invention relates to instrumentation technology. The goal is to reduce metal consumption and enhance functionality when sealing vessels with bolt holes in the flange. The device comprises a housing (K) 1 with cavities 2 and 3. Hydraulic actuator 4 is mounted on K 1. In cavity 2 a piston 6 is installed, and a double-sided rod 7 is rigidly connected to the supporting element 8. In piston 3 K1 there is a piston cap 9 with a central hole for passage of the rod 7 and the end sealing element 10. Traverse 13 with lid 14 is fixed to K 1. Traverse 13 has cylindrical cavities in which piston grips 19 are installed, passing into fingers 20 with segment slots on the lateral surface , and crawlers 24. The latter are installed on the palm 20 from the side opposite to the segment grooves, with the possibility of axial movement and connected to the rod 7. The cover 14 of the crosspiece 13 is made of radial grooves 27, which include counter prismatic protrusions 28 of the pistons 19. The plug 9 is made with a lateral surface in the form of a sphere and with an annular groove for the sealing cuff 12 located offset from the diametrical plane of the sphere away from the end sealing element 10. The medium is fed into the cavity 2 by the piston 6, the piston-plug 9 is pressed against K 1. The fingers 20 are inserted into the holes f lanes 22 of the vessel and turn K 1. The flange 22 enters the grooves of the fingers 20. The medium is fed into the cavity 2 under the piston 6, the piston-cap 9 is pressed against the flange 22 and the sliders 24 lock the cavities 2 in the holes of the flange 22. The medium is fed into the cavity of the vessel and tested. 2 hp f-ly, 8 ill.

Description

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and 3. A hydraulic actuator 4 is mounted on K 1. In the cavity 2 a piston 6 is installed, a two-sided rod 7 is rigidly connected to it with a support element 8. In a 3-cavity 1, a piston cap 9 is installed with a central hole for the passage of the rod 7 and end seal element 1.0. Traverse 13 with a lid 14 is fixed to K 1. In traverse 13 there are cylindrical cavities in which grippers are installed in the form of pistons 19, passing into fingers 20 with segment slots on the side surface, and sliders 24. The latter are mounted on fingers 20 with axially displaceable sides of the segment grooves and are connected with the stem 7, R-14, 14 traversing 13 are made radial grooves 27, in which

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The reciprocating prismatic protrusions of the pistons 19 are included. The piston-plug 9 is made with a lateral surface.

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In the form of a sphere and with an annular groove for the sealing cuff 12 located offset from the diametrical plane of the sphere away from the end sealing element 10. Medium is fed into the cavity 2 by the piston 6, the piston-plug 9 is pressed to K 1. The fingers 20 are inserted into Open the flange 22 of the vessel and turn K 1. Flute 22 enters the grooves of the fingers 20. The medium is fed into the cavity 2 under the piston 6, the piston-plug 9 is pressed against the flange 22 and the sliders 24 lock the cavities 2 in the holes of the flange 22. The medium is fed into the cavity vessel and tested. 2 hp f-ly, 8 ill.

The invention relates to instrumentation technology and can be used to seal vessels and nozzles with flanges when they are tested for tightness with excess pressure of the medium.

The purpose of the invention is the reduction of metal capacity and the expansion of functional possibilities for sealing vessels with bolted holes in the flange, as well as self-installation on the vessel.

On ф1г.1 the device, a general view is presented; figure 2 - section aa in figure 1 (finger with a slider); on fig.Z - section bb in figure 2; figure 4 is a view In figure 1; in fig. 5 is a view of Fig. 1; Fig. 6 shows a knot .1 ka of Fig. 2 (a slider with a slider when the slider is positioned outside the orifice of the sealing flange); Fig. 7 is a sub-scheme of the device; 8, a piston plug in the housing.

A device for sealing vessels with a flange contains a hollow cylindrical body 1 having a partition (not indicated) with an opening (not indicated), dividing its cavity (not indicated) into two cavities 2 and 3, mounted on the case hydraulic actuator 4 with connection 5 for supplying medium into the cavity 2, the piston 6 mounted in the cavity 2, the double-sided rod 7 rigidly connected with it with the supporting element 8 at the end, pro0

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a piston-plug 9 installed in the cavity 3 of the housing 1 and sealed in them; the piston-plug 9 with a central opening (not indicated) for the passage of the rod 7, with the end sealing element 10 and with the annular groove 1 for sealing cuffs 12 and an annular yoke 13 with a collar 14 rigidly mounted on the housing 1 axially on the side of the piston 6 and the hydraulic actuator 4 with the help of studs 15, nuts 16 and spacer sleeves 17. The traverse 13 is made with cylindrical cavities (not indicated) located concentric but around the axis (not indicated) of the housing 1, parallel to it and the channel 18 interconnected to each other. The grippers are made in the form of 5 tons of wires 19 that pass into fingers 20 installed with the possibility of free entry into bolt holes 21 flan1t.a 22 vessels and made each with a longitudinal segmental groove 23 on the lateral surface not reaching the free end (not indicated), and sliders 24 installed by the fingers of the first 20 on the side opposite to their grooves 23 displacement and bound through the plate 25 p nut means 26 with bilateral rod 7. The cover 14 traverses 13 vtolneny paay groove 27, and the free

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the ends of the pistons 19 of the fingers 20 are reciprocal prismatic protrusions 28 entering the grooves 27. For the purpose of self-installation on the vessel, the piston-plug 9 is made with a side surface in the form of a sphere (FIG. 8), and / the annular groove 11 is offset from the diametral the ZY plane of the sphere away from the end sealing element 10, in addition, the piston cap 9 is mounted on the housing 1 through rubber bushings 29 mounted on the restrictive screws 30 that pass through the holes of the piston stub 9 with a gap. In a double-sided rod 7, a channel 31 is made for supplying the medium to the cavity 2 for the piston 6, and in one of the studs 15 a channel 32 for supplying the medium to the cavity 3 and the cavity of the vessel.

The device works in the following way.

Through the channel 31, the medium is fed into the cavity 2 by the piston 6, which moves from the piston-plug 9, carries over the double-sided rod 7. The latter acts on the piston-plug 9 with its support element 8 and, moving it, compresses the rubber bushings 29. At the same time, the plate 25 moves the slide blocks 24 relative to the fingers 20 to the leftmost position. In this position, the device is inserted with the fingers 20 into the holes 21 of the flange 22 until the body 1 stops against the flange 22. Then the device is rotated around its own axis in the direction of the SRI of the segment grooves 23 so that the flange 22 enters these grooves 23. The device is rotated behind the body and the pins 20 rotate together due to the fact that the protrusions 28 of the pistons 19 enter the grooves 27 of the cross bar 13 rigidly connected to the housing 1. Shut off the flow of the medium through the channel 31 and feed it through the channel into the cavity 2 under the piston 6. Piston 6 with double-sided rod 7 is moved back along with The valve 25 and the support element 8. The plate 25 moves the slide blocks 24 towards the flange 22, inserting them into the holes 21 of the flange 22, fixing the fingers 20 in them. The rubber bushings 29 after removing the force from the piston — the end caps press the last end seal 10 to the flange 22. At the same time, the housing 1 moves in the opposite direction along with

the traverse 13, the rim 14, the pistons 19 and the fingers 20, pressing the end of their segmental grooves. 23 to the back side of the flange 22. Due to the non-flatness of the back side of the flange 22, not all of the fingers 20 are simultaneously pressed into it. In those fingers 20, which rested on the back side of the flange 2-2,

0, the pistons 19 act on the fluid in the cavity of the traverse 13 with greater force than those of the fingers 22 that have not yet rested against the flange. Along the channel 18, the fluid will redistribute along the cavities of the traverse 13, exerting pressure and, consequently, the force of the clamps of the fingers 20 against the flange 22. The non-parallelism of the rear and front sides of the flange 22

0 is compensated by turning the piston — the plug 9 relative to the housing 1 due to the spherical surface of the piston — the plug and the gaps between it and the screws 30. Feed the medium through

5 channel 32 into the cavity 3 of the housing 1 and through the central hole of the piston - plug 9 - into the cavity of the vessel. Since the area of the piston stubs from the side of the cavity 3 is larger than the area,

0 limited HBTM face element 10, the force of the piston clamping - the plug 9 to the flange 22 will be at any pressure greater than the opening force from the side of the cavity

 vessel that provides reliable sealing.

The disassembly of the device is carried out in reverse order.

The effectiveness of the invention consists in reducing the metal intensity and expanding the functionality due to the implementation of grippers in the form of piston-fingers with segmental grooves that ensure uniformity

5 clamping them to the vessel flange and refusal of bulky lever grippers, also due to the execution of a piston-plug with a spherical outer surface and its free

0 installation on the housing, thus ensuring the self-installation of the piston-plugs and reliable sealing.

Formula inventions

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Claims (3)

1. Device for sealing vessels with flanges, containing a hollow cylindrical body having a partition with a hole, section Its first cavity is in two, mounted in one of the piston pads, rigidly connected bilateral rod with a supporting element at the end, passing through the opening of the partition and sealed in it, mounted in the other cavity of the housing piston stump with a central opening for the passage of the rod and with the mechanical sealing element and the annular traverse with the lip and clamps for the flange of the vessel, rigidly fixed on the body axially to it from the side of the piston, so that, in order to reduce metal intensity and expansion nktsionalnyh capabilities when sealing. vessels, they have (their bolt holes in the flange, the traverse is made with cylindrical cavities located concentrically around the axis of the body parallel to it and communicating with each other, and the grips are made in the form of pistons installed in these cavities passing into fingers installed with the possibility of free AND I 5-5 five 0 the stroke into the bolt holes of the vessel flange and made each with a longitudinal segment groove on the side surface not reaching the free end, and sliders mounted on the fingers from the side opposite to their grooves with the possibility of axial movement and coupling to a double-sided stem. 2, The device according to claim 1, which is so that the cover is made of radial grooves, and the free piston pins of the fingers of the fingers are reciprocal prismatic protrusions entering these grooves. g 3. The device according to claim 1, about tl and - the fact that, for the purpose of self-installation on the vessel, the piston-cap is made with a side surface in the form of a sphere and with an annular groove for a sealing cuff located offset from the diametral plane spheres away from face sealing an item. I 2J 5 B Did C tsh .. Phie. 2it 25 2 25 FIG. five FIG. AT Lmlll  i g I I I 20 - &: 2 FIG. 7 Displacement amount Z-l External spherach axis. Superficial {aru) KNYYa sphere- paternmasst parishna Zausht 9