Device for repair of vertical wall of steel scroll tank

FIELD: construction.

SUBSTANCE: metal support is designed in the form of interconnected vertical pillars and horizontal beams, assembled in a single frame, intended for mounting and fixing inside the tank. Vertical pillars in the upper part of the tank are fixed to the support ring of the tank by means of bolt connection, and are welded to the edge sheet in the lower part of the tank through the glass. Metal support is also provided with fixing anchors, located along the perimeter of the repair area perpendicularly to the vertical pillars and horizontal beams. Metal support comprises the mean for moving fixing anchors relative to the vertical pillars, horizontal beams and vertical wall of the tank.

EFFECT: improving the repair quality of the tank wall.

4 cl, 4 dwg

 

The technical field to which the invention relates.

The invention relates to the repair of tanks, and more particularly to a device for repair of a vertical wall of the tank scrolled steel, including the metal support and can be used in the repair of vertical steel tanks as scrolled and tanks collected sheet method.

The level of technology.

A device for repair of a vertical wall steel coiled tank comprising a metal support (patent RF N 2256757 published in 2005).

The disadvantage of this mounting device is the low quality of the installation scrolled vertical cylindrical steel tanks due to the lack of frame stiffness on the wall, which prevents coagulation of the cut sheets of the main wall inside the procedure of drawing out the repair area of the wall to reduce thermal influence of the shrinkage of welds, possible appearance of Lapunov, which is unacceptable, as it can lead to accidents due to violations of the integrity of the shell wall of the tank, including environmental disasters due to oil spill in large volumes.

It is also known a device for repair of a vertical wall steel coiled tank on�sponding metal support (see the description of "rules of technical operation, diagnosis and repair of tanks" WITH 02-04-ACTP-077-2006 OJSC "AK "Transnefteproduct" K. 3 map.25 p. 361,and K. 3.26 p. 364).

This device is the closest to the technical essence and the achieved technical result and selected as a prototype of the invention.

The disadvantage of this device installation is also low quality of installation of vertical cylindrical steel coiled tanks due to the lack of frame stiffness on the wall, which prevents coagulation of the cut sheets of the main wall inside the procedure of drawing out the repair area of the wall to reduce thermal influence of the shrinkage of welds, possible appearance of Lapunov, which is unacceptable, as it can lead to accidents due to violations of the integrity of the shell wall of the tank, including environmental disasters due to oil spill in large volumes.

Disclosure of the invention.

Based on this original observation, the present invention mainly aims to provide a device for repair of a vertical wall steel coiled tank, which allows at least to smooth out one of the above disadvantages, namely to ensure the quality of repair of a wall of vertical tanks �the rest by preventing repair the appearance of Lapunov.

To achieve this, metal bearing made in the form of interconnected uprights and horizontal beams are assembled in a single load frame adapted for installation and fixing scrolled inside a steel tank, Vertical posts at the top of the tank adapted for attachment to the support ring steel coiled tank by bolting, and in the lower part of the tank through the glass, welded to Arrechea sheet. The upright is adapted to placing vertically by means of wedges of the sheet. Metal bearing further includes a fixing anchor located on the perimeter of the repair area perpendicular to the vertical posts and horizontal beams and adapted for attachment to the vertical wall of the coiled tank sheet. The number of vertical pillars and horizontal beams is selected depending on the area of the repair area of the sheet. Metal bearing further includes means for moving the locking anchors relative to vertical posts, horizontal beams and the vertical wall of the tank.

Thanks to this advantageous characteristic becomes possible to improve the quality of repair of the walls of the tanks, as it becomes possible to fit a new �emotie the list (s) in the design position instead remove old leaves, forming the walls of the tank, thus facilitating the repair of tanks. Indeed, from the inside to bend outward curving inwards the edges of the sheets easier.

There is a variant of the invention, in which each vertical column and each horizontal beam is made in the form of a pair of metal profiles, u-shape, each of which has a middle flat portion and two side flat plot facing middle flat portions to each other. Each pair of metal sections adapted to ill connection with each other through have between them fixing anchors. The size of the metal profiles of the horizontal beams is less than the size of metal profiles uprights.

Thanks to this advantageous characteristic becomes possible to allow movement and locking of the locking anchors, hardening of the overall design.

There is a variant of the invention in which the locking of the anchor is made in the form of segments of metal profiles u-shaped. The size of the metal profile of the fixing anchor is smaller than the metal profile of the horizontal beams.

Thanks to this advantageous characteristic makes it possible to use robust versions of parts of the device.

There is a variant of the invention in which a�m means of displacement of the locking anchors and the local zone to the vessel wall is in the form of Jack.

Thanks to this advantageous characteristic becomes possible to permit movement of the locking anchors and the local zone of the wall of the tank with the Jack.

There is an alternative variant of the invention, in which the means for moving the locking anchors are made in the form of a set of threaded holes in the vertical uprights and horizontal beams and placed them in threaded fasteners.

Thanks to this advantageous characteristic becomes possible to permit movement of the locking anchors using threaded fasteners.

The set of essential features of the invention are unknown in the art for devices of similar purpose, which allows to make a conclusion on compliance with the criterion of "novelty" of the invention.

Brief description of the drawings.

Other distinctive features and advantages of the invention clearly emerge from the description given below for illustration and non-restrictively, with reference to the accompanying drawings, in which:

- figure 1 schematically shows a device for repair of a vertical wall scrolled steel tank, inside view of the tank according to the invention.

- figure 2 schematically shows a device for repair of a vertical wall of steel romanroman�th tank type (cut) side of the tank according to the invention.

- figure 3 schematically shows a device for repair of a vertical wall steel coiled tank, view (view) at the top of the tank, according to the invention.

- figure 4 depicts the stages of application of the device according to the invention.

According to Fig. 1-3, the device for repair of a vertical wall steel coiled tank includes a metal support, which is made in the form of interconnected uprights 1 and horizontal beams 2, which are adapted for installation and fixing scrolled inside a steel tank 3.

The upright 1 is intended for mounting to a supporting ring 31 scrolled steel tank bolted ofconnectivity and through the "glass" 32 by means of wedges 33 and welding to Arrechea sheet steel coiled tank (see Fig. 3).

Metal bearing further includes a fixing anchor 4 located on the perimeter of the repair area perpendicular to the vertical posts 1 and horizontal beams 2 and adapted for attachment to the vertical wall of the coiled tank. The number of uprights 1 and horizontal beams 2 is selected depending on the area of the repair area. Metal bearing further includes selectedto move the locking anchors relative to vertical uprights and horizontal beams.

Each vertical column 1 and each horizontal beam 2 can be made in the form of a pair of metal profiles, u-shape, each of which has an average flat plot (for uprights is the profiles 11 and 12, medium flat areas 111 and 121) and two lateral flat section (for sections 11 and 12 of the uprights is 112, 113 and 122, 123), medium facing flat portions to each other. The size of the metal profiles of the horizontal beams (21 and 22) may be less than the size of the metal profiles of the vertical struts (11 and 12).

The fixing of the anchor 4 is made in the form of segments of metal profiles u-shaped, the size of the metal fixing profile of the anchor may be less than the size of the metal profile of the horizontal beams.

The means for moving the fixation anchors can be made in the form of the Jack 5.

In the figures of the repair insert is indicated as 6. The position of the vessel wall in the calculated position is labeled on the figures as 7, but a temporary bump out the position of the wall as 8.

The implementation of the invention.

Device for repair of a vertical wall steel coiled tank install and use as follows. (Reproduced non-limiting application of the invention an example of a scrolled mounting of the tank with the use of predlagaemaya according to figure 4.)

Stage A1. In scheduled the repair area from the inside of the reservoir using winches mounted under the support ring 31 or (in the area of contiguity of the roof to the wall depending on the design of the reservoir) uprights 1, which are attached to the support ring 31 by bolting through the "glass" 32 by means of wedges 33 and welding to Arrechea the sheet, and welding by welding horizontal beams between them. The number of simultaneously used uprights depends on the size of the repair area.

Stage A2. Around the perimeter of the repair area by welding are fixing anchor 4 between the uprights 1 and the wall of the tank 3. Fixing anchor 4 are welded to the vessel wall 4, but at the stage the plants have the possibility of movement relative to the uprights 1, for example, by means of jacks.

Stage A3. Produce layout and removal from repair areas of defective sheets of a wall.

Stage A4. A seat is mounted with crane new repair insert (grade) 6, which are mounted between itself and the wall of the tank with the mounting fixtures and fixing of anchors 4.

Stage A5. Using the locking anchors 4 and jacks 5 pull outward on the estimated f=20-40 mm collected the wall, locking it in position with regard to the prevention and PEFC�blowing effects from the shrinkage of the welding Assembly seams (regulations 8 and 7 in the figures). Fix locking of the anchor 4 in position by welding to the vertical racks 1.

Step A6. Produce welding work. Upon completion of welding works on this repair section the equipment for repair, disassemble, and if necessary, the cycle of operations is repeated on the remaining sections until complete repair of the tank.

Step A7. Thus, produce a gradual replacement of all subsequent repair areas of the tank.

We present variants of the invention are exemplary and allow you to add new options to modify or described. For example, to use the stages selectively or simultaneously repair the wall at two diametrically opposite sections.

Industrial applicability.

The proposed device for repair of a vertical wall steel coiled tank can be carried out by a specialist in practice and in the implementation provides an implementation of the stated purpose, which allows to make a conclusion on compliance with the criterion of "industrial applicability" for invention.

The described apparatus for repair of a vertical wall steel coiled tank is realized on the basis of traditional technologies, and the possibility of its implementation is not associated with any additional technical problems.

In accordance with the proposed invention by the applicant repeatedly tested in practice, the technology and device for repair of a vertical wall steel coiled tank on the objects of OJSC "AK "Transneft" and the prospects of the proposed device.

Tests have shown that such a device for repair of a vertical wall scrolled steel tank allows for:

- quality repair,

- avoid the appearance of Lapunov.

Thus, due to the fact that metal bearing made in the form of interconnected uprights and horizontal beams are assembled in a single load frame designed for installation and fixing scrolled inside a steel tank, and the vertical column in the top part of the tank is made with the possibility of attachment to the support ring steel coiled tank by bolting, and in the lower part of the tank is made with the possibility of fastening using a glass welded to Arrechea sheet, and the metal pillar includes the fixing of the anchor, located on the perimeter of the repair area perpendicular to the vertical posts and horizontal beams and designed to adhere to the vertical wall of the coiled tank sheet, while the number of vertical pillars and horizontal beams is selected depending on the area of the repair area of the sheet, and metal bearing includes means for moving the locking anchors relative to vertical posts,horizontal beams and the vertical wall of the tank and achieved the claimed technical result namely: improving the quality of repair of a wall of vertical steel tanks, by preventing repair the appearance of Lapunov.

Additional useful technical result of the claimed invention is that the device provides:

- to avoid the need to install after repair work additional stiffeners on tank walls;

to increase the reliability of the repaired tanks;

- made once the inventory kit a snap for the same type of tanks can be used unlimited number of times during the repair works at the enterprises operating tanks that will significantly reduce the material costs of the enterprise in the future.

Thus, the technology and the design of the device used in practice for repair of a wall of vertical steel tanks, it is recommended for extensive application in industries.

1. Device for repair of a vertical wall steel coiled reservoir, which includes the metal support, wherein the metal bearing made in the form of interconnected uprights and horizontal beams are assembled in a single load frame designed for installation and fixing inside a steel scrolled RES�of rvoir, a vertical column in the top part of the tank is made with the possibility of attachment to the support ring steel coiled tank by bolting, and in the lower part of the tank is made with the possibility of fastening using a glass welded to Arrechea the sheet, and the metal bearing includes a retainer anchor located on the perimeter of the repair area perpendicular to the vertical posts and horizontal beams and designed to adhere to the vertical wall of the coiled tank sheet, while the number of vertical pillars and horizontal beams is selected depending on the area of the repair area of the sheet, and metal bearing includes means for moving the locking anchors relative to the uprights, horizontal beams and the vertical wall of the tank.

2. The device according to claim 1, characterized in that each vertical column and each horizontal beam is made in the form of a pair of metal profiles, u-shape, each of which has a middle flat portion and two side flat plot, facing middle flat portions to each other, and the size of the metal profiles of the horizontal beams is less than the size of metal profiles uprights.

3. The device according to claim 2, characterized in that the locking Anke�and is made in the form of segments of metal profiles u-shaped form, and the size of the metal profile of the fixing anchor is smaller than the metal profile of the horizontal beams.

4. The device according to claim 2, characterized in that the means for moving the locking anchors are in the form of Jack.



 

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