SU1689572A1 - Draft pipe - Google Patents

Description

The invention relates to the field of construction, namely, exhaust pipes for the removal of polluted air. The aim of the invention is to increase reliably2

to work. The air shells 1 and 2 of the exhaust pipe are truncated cones. Between them there is an installation device 5, made in the form of a truncated pyramid, on which is a lattice ceiling with a smoke-cleaning device. The tip is made in the form of a parachute 23 and an additional conical shell 19 attached to the end of the outer shell 1. The pipe is made with winches 26 and 21 for vertical movement of the outer shell 1 and the tip. 1 hp f-ly, 3 ill.

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The invention relates to the field of construction, namely, exhaust pipes for the removal of smog and gasified production waste.

The purpose of the invention is to increase reliability in operation.

FIG. 1 shows a pipe, a general sectional view; in fig. 2 - the same, top view; in fig. 3 shows the node I in FIG. 1 with the outer sheath lowered.

The exhaust pipe consists of a gas exhaust trunk, made in the form of an outer pneumatic shell 1 and an internal pneumatic shell 2, having the shape of a truncated cone, and an end cap 3, made in the form of a parachute and an additional conical shell. The lower base of the pneumatic membranes 1 and 2 are fixed on the foundation 4.

Between the air shells 1 and 2 there is an installation device 5, which is a truncated pyramid, the edges of which are trusses 6, and the upper base is a platform 7, made in the form of a slatted floor with ring fences 8. The internal cavity of the installation device 5 is a chimney 9. The latter are connected smoke ducts 10 from various enterprises located within a radius of 1-2 km from the exhaust pipe, as well as from the streets with increased gas pollution. The trusses 6 are attached to a grating 11, on which a smoke-cleaning device is located, made in the form of water pipes 12 with nozzles'13. An internal pneumatic membrane 2 is attached to the lattice ceiling 11, which is also attached to the trusses 6.

On foundation 4, under ceiling 11, a chamber 14 is mounted, which is connected by pipes 15 to water treatment plants (not shown).

On the installation device 5 is mounted a funicular (for installation, repair and maintenance inspection), consisting of two wagons 16 connected by cables 17. The wagons 16 have a braking device (not shown) that is activated when the cable 17 is broken.

The upper part of the outer air shells 1 is fixed on the hoop 18, it also has an additional tapered elastic sheath 19 of the tip with a hoop 20. On the hoop 18 there are winches 21. which hold the lines 22 of the parachute 23.

To supply the winches 21 with electricity to the hoop 18 summed electrical cable 24.

Along the perimeter of the outer pneumatic membrane 1 of the exhaust pipe on the foundation 4 there are fans 25 and winches 26. Cables 27 go from hoop 18 to winches 26.

For passage into the pneumatic membrane 1 to the landing pads of the funicular, vestibules 28 with doors opening into the inside of the pipe are provided. These doors are equipped with compensating springs (not shown) that reduce the force of excess pressure on the door.

In the course of work, flue gases from enterprises and gas from the streets, which is blown by fans 25, come to the exhaust pipe through chimneys 10. Gases enter the chimney 9.

The chimney 9 gases rise up and reach the ceiling 11, which is installed on the smoke-cleaning device in the form of water pipes 12 with nozzles 13, creating rain. Each drop of rain, overcoming the oncoming flow of smoke, slowly descends into chamber 14, managing to dissolve in itself the components of the flue gases dissolving in water and adsorb solid particles of these gases. From chamber 14 along pipes 15, water with the components of the flue gases dissolved in it is discharged into water treatment plants (not shown), of which then flows back through a closed loop into chimney 9.

For better purification of flue gases from acid anhydrides, lime should be added to the water of the purification tanks in such a quantity that the water coming from the settlers into the chimney would have an alkaline reaction.

.. Purified smoke and air escape through the exhaust pipe to the atmosphere.

Under normal conditions, the conical shape of the pneumatic membrane 1, the cables 27 and the planning parachute 23, which is controlled by the dispatcher using winches 21, help to withstand the pressure of the wind.

In the case of wind up to storm with the help of winches 26, the hoop 18 with pneumatic enclosure 1 is lowered onto the trusses 6 of the installation device 5. At the same time, the hoop 20 hangs between fences 8.places 7, pulling the elastic sheath 19 onto the railing of the outer fence 7 (Fig. 3).

The parachute 23 in case of stoppage of the chimney 9 and the fans 25 is tightened by the winches 21 with the help of lines 22 until the elastic sheath 19 is pressed to the railing of the outer fence 8 of the platform 7, the curve between the canopy 23 and the elastic sheath 19 through which the gas can pass . In the case of continuation of the chimney 9, the winches 21, located on the side from which the wind blows, pull the lines 22 of the parachute 23 up to

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cases, and the winches 21c of the opposite side release the slings 22 to such an extent that the parachute 23 does not prevent the gas from escaping through the space between the parachute canopy and the elastic sheath 19. Fans 25 can be stopped or run at reduced speed (with reduced performance). In the latter case, the air (gas), injected by the fans 25, goes, mixing with smoke, into the space between the elastic sheath 19 with the hoop 18 and the edge of the parachute dome 23,

During a strong storm wind, the height of the exhaust pipe can be reduced to the height of the trusses 6 without affecting its purpose.

When the wind decreases to a certain (optimal) value, the lines 22 of the parachute 23 are tightened by winches 21: so that it closes the space between the canopy of the parachute 23 and the shell 19, which is pressed by the gas pressure to the canopy of the parachute 23. At this moment the winches 26 are set to idle and strati-; cables 27, fans 25 and exhausters are started at full capacity, an overpressure is created in the pneumatic enclosure 1, under the action of which it,

rises and acquires a conical shape (Fig. 1). At the final stage of lifting the pneumatic membrane 1, the winch 21 is freed from the slings 22 and at idle speed it bites them to an optimum value, which is determined by the controller by sending a signal that stops the winch 21 in the desired position.

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Claims (2)

Claim 1. A chimney including a barrel made of outer and inner air shells and caps, characterized in that, in order to increase reliability in operation, it is provided with an installation device with grate overlap between the shells installed on the last smoke-cleaning device and winches of vertical displacement of the outer shell and the head, with the shell made conical, in the head - in the form fixed to the end of the outer shell of the parachute and an additional conical shell, and the inner shell is rigidly attached to the installation device. 2. Pipe on π. 1, characterized in that the smoke-cleaning device is made in the form of water pipes with nozzles. FIG. ζ 1689572 FIG. s