SU1260161A1 - Protector cap - Google Patents

Description

The invention relates to welding and can be used in the production of hot work on the replacement of equipment in tanks and tanks of flammable liquids, for example, to replace the transfer-discharge nozzles, weld welds, etc.

The purpose of the invention is to increase the effectiveness of protection

Figure 1 shows the device, general view, section; Fig 2 is the node in Figo 1; in fig. 3 is a view A of FIG. one; in fig. 4 - node P in FIG. I

The protective cap contains a flexible shell consisting of an adherent layer 1 and an inner layer 2 connected tightly along the edges. The edge of the inner layer of the shell is made with a sealing gasket 3, corners A with permanent magnets 5 are attached to the outer layer of the shell to secure the sealing cap to the inner wall of the tank The outer layer 1 of the shell has holes 6 for the passage of a protective gas or liquid creating a gas or liquid protection around the protective cap. The layers of the shell are not rigidly fixed In the middle part. A hose 7 of the line is attached to the outer layer of the shell for supplying the working medium between the layers of the shell and further along the hose 8 through the spray gun 9 to the repair site for blowing through the inside of the protective cap or for a constant feed. The overlapping of the supply of the working medium is carried out by the control valve 10 located outside the protective ring.

pack I

The inner shell through the hole in the wall of the repaired tank freely communicates with the outer atmosphere, i.e. no closed volume is created.

The inner layer of the flexible shell has a protective cup 11 (screen), made of fire-resistant material and rigidly fixed to the shell. The protective cup is turned with its hole to the place to be repaired.

The protective cup 11 has a spray 9 of protective medium (gas or liquid) with an individual control valve 10, made behind the outer shell of the sealing cap.

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The edges of the protective screen 11 are bent inward to collect splashes of molten metal formed during flame cutting to remove the repaired pipe 2, and to collect the protective fluid supplied through the nebulizer to the inside of the zangchtny screen 11.

The protective cup I1, when inflating the flexible sealing shell of the cap, is pressed tightly: by the inner shell 2 to the inner surface of the reservoir 13.

The presence of holes 6 in the outer shell 1 of the sealing cap provides the creation of a protective gas or liquid protection around the sealing cap, as well as its protection against overheating.

To detach the magnet 5 from the reservoir 13, a threaded hole is made at the corners 4, into which a screw 14 is screwed, at one end of which there is a handle 15 for rotating it, and at the other end facing the wall of the reservoir 13, the cup 16 is rotatable designed to prevent the permanent magnet 5 from moving as the screw 14 rotates,

Other structures can be used to detach the magnet 5 from the reservoir, for example, using a wedge to detach the magnet 5 or inserting insulating spacers of non-magnetic material.

The device works on the following.

The tank 13 to be repaired is emptied, the pipeline is disconnected. The installation of the sealing cap is carried out by a worker descending into the tank along a ladder with a gas mask to protect against the atmosphere of the tank.

The cap is installed around the old pipe 12 (along the required contour), fastened with magnets 5. The sealing gasket 3 is tightly pressed against the side surface of the reservoir 13. After installing the sealing cap, the working medium is blown into the space between the layers of the shell her, gives it the shape of a sphere. A protective screen 1 fixed on the inner layer 2 of the shell and facing away from

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A version of the nozzle 12 is pressed end to the side surface of the tank.

Part of the protective environment, the output of the holes 6, creates a protective sleep around the cap.

After purging the cap from the outside of the tank to remove the old receiver of the dispensing nozzle 12 with a collar, a new one is installed in its place, it is welded to the tank wall, and the splashes of molten metal are collected in a protective cup I1. After welding the new pipe and closing the control valve 10, the permanent magnets detach from the wall of the tank. The detachment is performed as follows: rotate the screw 14 by the handle 15 until the cup 16 rests in

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tank wall. Upon further rotation of the screw 14, the magnet detaches from the tank wall. In this way, all the magnets are detached, the device is removed and used on another tank.

When using the proposed device, the working conditions of the electric welder and the gas cutter are improved. Improved safety of welding and welding operations due to the formation of protective zones both inside the sealing cap and outside of it.

The proposed device can be used for any diameters of cylindrical tanks, as well as rectangular and other, due to the slight change in the configuration of the flexible shell relative to the curvature of the tank surface.

FIG. 2

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Compiled by V. Vlodavska j Editor M. Petrova Tehred M. Khodanych. Proofreader S. Shekmar

Order 5168/10 Circulation 1001Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113033, Moscow, Zh-35, Raushsk nab., d, 4/5

Production and printing company, Uzhgorod, st. Project, 4

FIG.

Claims (2)

1. A PROTECTIVE CAP containing a flexible shell connected by a line to a source of working medium supply, and means of attaching it to the product located at the edges of the shell, characterized in that, in order to increase the efficiency of protection, the flexible shell is made of two layers hermetically connected at the edges between which the outlet of the highway is located, while the cap is equipped with a screen mounted on the inner layer of the shell, made in the form of a glass with the edges bent inward, and a spray connected to the highway, and in the outer Loe shell openings. 2. Cap pop. 1, characterized in that the means of attaching the shell to the product are made in the form of a set of magnets with individual devices for detaching them, S