Explosion-proof type generator car for coal mine

Abstract

The invention relates to an explosion-proof dynamo van for a coal mine. The main structure consists of a tractor, a van seat, a front wheel, a rear wheel, a diesel engineer, an oil tank, a water replenishing water, an air filter, an air cooler, a gas supercharger, an exhaust gas processing tank, a gas storage tank, a radiator, a fan, a generator, a coupler, a soft starter, a liquid crystal display screen, a console panel, a pipeline, a circuit board and a conducting wire; the dynamo van adopts the large-power diesel engineer as power, carries out peripheral distribution and drives the generator to generate power; the revolution of the generator is 1,500 r / min; the generating voltage is between 660 and 1,140 V; the power is between 160 and 200 kw; after power generation, the voltage is adjusted and reduced by the soft starter and is input to driven equipment; the driven equipment is started; the range of voltage regulation is 30 to 85 percent of the rated voltage; after voltage regulation and reduction, the impact moment of startup can be reduced; the starting capacity is increased; and after startup, normal voltage is restored. The dynamo van has reasonable design, a compact structure, strong generating capacity, high voltage, large powder, safety, stability and reliability, and can be used for various large and middle-sized equipment of the underground of the coal mine.

Description

technical field [0001] The invention relates to an explosion-proof power generation car for coal mines, which belongs to the technical field of underground power generation equipment in coal mines. Background technique [0002] A large number of heavy equipment are used underground in large and medium-sized coal mines, such as roadheaders, continuous miners, feeder breakers, bolters, traveling supports, shuttle cars, etc. Most of the power they use depends on the power transmission cables on the well. , the operating voltage is 660-1140V. Due to the extension of mining, the movement of equipment, the downhole, lifting, and hoisting of equipment, the transmission cable must be retracted and dragged, which is labor-intensive and time-consuming. With the extension of the distance of the transmission cable , the resistance of the cable core wire itself increases, and the line voltage drop is large. When the high-power load transmission distance reaches 1000 meters, the line volt...

AI Technical Summary

Problems solved by technology

[0002] A large number of heavy equipment are used underground in large and medium-sized coal mines, such as roadheaders, continuous miners, feeder breakers, bolters, traveling supports, shuttle cars, etc. Most of the power they use depends on the power transmission cables on the well. , the operating voltage is 660-1140V. Due to the extension of mining, the movement of equipment, the downhole, lifting, and hoisting of equipment, the transmission cable must be retracted and dragged, which is labor-intensive and time-consuming. With the extension of the distance of the transmission cable , the resistance of the cable core wire itself increases, and the line voltage drop is large. When the high-power load transmission distance reaches 1000 meters, the line voltage drop loss rate can reach 30%, which greatly affects the normal operation of the equipment. The coal mine underground power supply network is The tree structure extends from the trunk to the branches. When the trunk fails, all power supply circuits will be paralyzed; because the high-voltage transmission cables are often soaked, pulled, and worn underground, it is also easy to cause leakage and accidents

[0003] There are also battery devices used underground in coal mines, such as low-power coal trucks, electric locomotives, etc., but the battery capacity is limited, the continuous working time is short, the battery is often charged, and the capacity of the battery is mostly small. Since the battery adopts a DC power supply mode, its The control is more complicated, and the AC-DC conversion is more troublesome during charging. The use of the battery has higher requirements on the air humidity, ventilation conditions, and gas concentration in the underground, and frequent maintenance is required, which greatly limits the use of the battery.

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