Explosion isolation type low-voltage explosion-proof power generator

Abstract

The invention relates to an explosion-isolated low voltage explosion-proof generator which is characterized in that an AC exciter and a permanent magnet auxiliary exciter are arranged in the cavity of a generator base. The main generator is provide with a stator which is separately nested and connected with the generator base, and a rotator shaft which is connected with the generator base support through an end cover bearing. An inner cooling fan, a main generator rotator, an excitation generator, a rotating rectification component and the permanent magnet auxiliary exciter are respectively nested on the rotator main shaft of the main generator sequentially through a connection shaft sleeve, and rotate along with the rotator main shaft. Heat dissipation pipes are welded on the outer surface of the generator base and communicated with the inner cavity of the generator base. The generator not only has fine explosion isolating performance, good voltage wave of the generated electricity, but also has compact structure of the parts and smart design of the cooling system. The generator also has the ideal effect of small vibration, good heat dissipation, reasonable temperature rising, and safe and reliable electricity generating.

Description

technical field [0001] The invention belongs to the technical field of generators, in particular to a flameproof low-voltage explosion-proof motor used for a diesel generator set matched with a mobile explosion-proof tram used in coal mines. Background technique [0002] At present, as the depth of the coal mining face continues to increase, it is becoming more and more difficult for coal mine equipment to go down and move. There are usually three ways to go down and move large equipment: one is to decompose and disassemble into various parts and go down the well, and then install them on the working face. On-site assembly, this method not only has a long period and high work intensity, but also has serious damage to the components, so that the reliability of the equipment cannot be guaranteed. The second is to transport the mobile device on a flatbed truck, and use its power to transport it to the destination. This method requires a higher height of the underground roadway...

AI Technical Summary

Problems solved by technology

This method requires a high height of the underground roadway, poor adaptability in the underground, and the power of the flatbed truck is generally large, and the general explosion-proof is difficult to meet the requirements

The third is that the mobile equipment is powered by cable backup relay, and the equipment is transferred by dragging the cable. Due to the limitation of cable length and line voltage drop, the transportation distance is limited. During long-distance transportation, it is necessary to stop frequently to connect the cable. In addition, the cables also need to be dragged manually, which is labor-intensive, and the cables are often worn out, so the safety of power supply is poor

In the prior art, the commonly used generators have separate bases for the main generator, the AC exciter and the permanent magnet auxiliary exciter, and there are many junction boxes, including the main generator, the AC exciter and the permanent magnet auxiliary exciter. There are too many lead wires in the junction box, which brings inconvenience to installation and maintenance.

In addition, the salient poles of the rotor of the low-voltage salient pole generator are mostly made of alloy steel material for slotting processing, resulting in a lot of material waste, heavy processing workload and high cost

The magnetic pole of the exciter adopts the lamination structure of punching sheets, which consumes a lot of molds and is time-consuming and labor-intensive.

Especially so far, there is no ideal explosion-proof and explosion-proof technology for low-voltage power generation.

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