SU977903A1 - Flue - Google Patents

Description

one

The invention relates to the protection of atmospheric air, in particular, to chimneys, designed to remove gaseous products to the upper atmospheric layers in chemical, energy, metallurgical and other industries.

A chimney pipe is known, comprising a casing formed by a conical coil without a solid wall, the hollow coils of which have nozzles and are connected to hollow supports through which compressed air is supplied from a 1JJ compressor.

The disadvantage of this pipe is the difficulty of obtaining an organized movement of exhaust gases inside the body formed by a conical spiral, especially at high wind speed. Due to this, the height of distribution of the gas stream is significantly reduced.

The closest in technical essence to the present invention is a chimney, comprising a housing containing an internal spiral insert 2.

A disadvantage of the known pipe is the low intensity of movement of the gas stream and the low height of the discharge of exhaust gases. In addition, due to the increase in the path of movement of the exhaust gases, due to the spiral insert with a small speed of movement of the exhaust gases, solid smoke particles can settle on the surface of the spiral insert and the walls of the pipe, which gradually reduces the flow area of the chimney. This leads to increased air pollution.

The purpose of the invention is to improve the draft and increase the height of flue gas emissions.

This goal is achieved by the fact that the smoke tube comprising a housing with an internal spiral insert, is provided with a central hollow support, and a vertical slit nozzle located at the exit of the housing and connected by a pipeline with a support, and on the insert planes there are hollow curved blades connected to the support concave the side of which is made with holes different in cross section. FIG. 1 shows the proposed pipe section; in fig. 2 shows section A-A in FIG. one; in fig. 3 cut. BB in FIG. 1. Inside the casing of the pipe 1 there is a spiral insert 2 in the form of a screw, the attachment 2 is additionally equipped with a price hollow support 3. On the planes of the insert 2 are mounted, accelerate the rotation of the gaseous medium, which are curved k hollow curved blades with It has various openings in the cross section to create a certain rapid Tiioro flow, which creates a centrifugal force of motion of the gas medium. The blades k are located at an angle of 120 ° relative to each other. At the outlet of the pipe 1 body, an injection slit accelerator is installed, made in the form of a vertical slit nozzle 5 connected by pipe 6 with a support 3, through which compressed air 7 is supplied. The injection slit accelerator maintains the centrifugal motion of the gas and gives it the greatest pressure at the outlet in the diffuser 8. The smoke pipe works as follows. When the compressor 7 is turned on, the air under pressure, rising on support 3, passes through accelerators (curved blades оп with an orifice of different diameters) to create equal speeds that allow obtaining; The centrifugal force of rotation of the gaseous medium inside the body of the pipe 1. At the same time, the solid particles of the gas flow under the action of inertial forces hit the walls of the body of the pipe 1 and the spiral insert 2 and slide down. Air entrains the gas flow and throws it away from the center to the cylindrical walls of the pipe body 1, creating a centrifugal force. At that, all the gas flow rises up vertically in a spiral formed by the walls of the casing of the pipe 1 and the internal spiral insert (auger) 2. The gas movement in this case takes the form of a spiral, which at the outlet of the pipe casing in the diffuser 8 receives additional pressure due to acting as a slit-type injection accelerator in the form of a vertically placed slit-like nozzle 5. As the particles enter the atmosphere, the gas particles tend to maintain spiral movement by inertia. Their speed depends on the pressure created, which makes it possible to counteract the trapping layers in the atmosphere. The use of the invention allows, by means of an injection accelerator, to create good traction and pressure. The combination of accelerators of rotation of the gas medium and the spiral insert creates a centrifugal force of motion of the gas flow, which, at the outlet of the pipe, is converted into a head increased by the injection accelerator. This allows the gas stream to maintain a spiral movement as it enters the atmosphere from the diffuser of the pipe. This increases the aerodynamic drag and the height of the exhaust gases. At a given height, this is equivalent to reducing the required chimney height. In addition, during operation of the chimney, serviceability is improved and safety is increased due to the possibility of moving the maintenance personnel during repair work inside the pipe along the surface of the spiral insert (the principle of a spiral staircase). The drainage of rainwater to the sewage system is also improved. By increasing the height of the flue gas dispersion by 50-200 m, 40-160 thousand rubles can be saved, since for a height of more than 50 m, the cost of a pipe per meter increases 4-fold. Invention Smoke pipe comprising a housing with an internal spiral insert, characterized in that, in order to improve draft and increase the flue gas emission height, it is provided with a central hollow support and a vertical slit nozzle located at the outlet of the housing and connected to a pipeline with a support , and on the insert planes, hollow curved blades are mounted;

Claims (1)

Claim The chimney, including the casing with an internal spiral insert, is distinguished by the fact that, with the aim of improving traction and increasing the height of the emission of flue gases, it is equipped with a central hollow support and a vertical slot-shaped nozzle located at the outlet of the housing and connected by a pipe to the support, and on hollow curved blades are mounted on the insert planes, connected to a support, the concave side of which is made with holes with different cross sections.