Blowing/suction-type carbon powder collecting device for throughflow horizontal generator unit

Abstract

The invention discloses a blowing / suction-type carbon powder collecting device for a throughflow horizontal generator unit. The blowing / suction-type carbon powder collecting device comprises a dust cage, a deduster, a blower and an electrostatic filter bag, wherein the dust cage is provided with a dust cage air inlet and a dust cage air outlet; the deduster is provided with a shell, the shell is provided with a deduster air inlet and a deduster air blowing port, the deduster air inlet is communicated with the dust cage air outlet, the deduster air blowing port is communicated with the dust cage air inlet, and the shell is provided with a deduster air outlet; the blower is arranged in the shell; the electrostatic filter bag is arranged at the air blowing port side of the blower; and an air passage is formed by the deduster air inlet, the electrostatic filter bag, the blower and the deduster air blowing port. According to the blowing / suction-type carbon powder collecting device, carbon powder dust is sealed by virtue of a sealed cavity, so that the carbon powder dust is prevented from polluting a generator and peripheral spaces; and the deduster is utilized for collecting and treating the carbon powder dust, and a part of outlet air from the deduster is introduced into the sealed cavity so as to form strong wind to drive the carbon powder, so that the carbon powder is sucked out by virtue of the deduster air outlet, the dedusting effect is improved, heat generated by friction also can be taken away, and the surface temperature of a sliding ring can be effectively reduced.

Description

Technical field [0001] The invention relates to a blowing and suction type carbon powder collecting device for a tubular and horizontal generator set. Background technique [0002] Traditional generators use the principle of induced electromotive force generated by coil cutting magnetic field to generate electricity. In the hydro-generator, the collector device is an important component, which is mainly composed of two parts, a slip ring and a carbon brush device. When the unit is running, the DC power supply (external) is transmitted to the rotor through the carbon brush device and the slip ring The magnetic field is generated on the excitation winding, and the coil is arranged on the stator; when the rotor rotates around the stator with the excitation winding, the coil on the stator cuts the magnetic field lines to obtain current. In the current technology of the tubular generator, during the operation of the unit, because the slip ring is always in high-speed rotation, and th...

AI Technical Summary

Problems solved by technology

In the current technology of the tubular generator, during the operation of the unit, since the slip ring is always in high-speed rotating motion, and the carbon brush device is a stationary part, friction will inevitably occur between the two, and this friction will inevitably lead to the following three aspects Unfavorable effects: 1. The carbon brush wears seriously, so that the service life is not long; the carbon brush must be replaced after the wear exceeds the process permit range, and most of the existing technologies need to be shut down for replacement. In large and medium-sized generator sets with a large number of carbon brushes, It is obviously unfavorable to frequently stop the machine to replace the carbon brush, and sometimes it is even impossible; 2. When the carbon brush is worn out, a large amount of fine, dusty carbon dust is formed; if this dust is not collected and dedusted, It will inevitably enter the interior of the generator with the rotation of the unit, further pollute the stator winding and excitation winding, etc., and affect the safe operation of the unit

In order to avoid the generation of dust, the manufacturer adopted a variety of methods in the design, such as reasonably controlling the electric density of the carbon brush, selecting a carbon brush with excellent performance, slotting the slip ring, and using a dust collector to absorb dust. The indoor space of the slip ring is small, the volume and quantity of dust collectors are limited, and the dust removal effect is not ideal; 3. The surface temperature of the slip ring rises, which affects the operation effect; for this phenomenon of temperature rise, it is necessary to increase the cooling system to cool down. The structure of the generator equipment is complicated, and the cooling effect is not ideal

Images