Mine explosion-proof and general mixed type belt conveyer control device

Abstract

The invention mainly provides a mine explosion-proof and general mixed type belt conveyer control device. The control device comprises explosion-proof equipment and mine general equipment, wherein the explosion-proof equipment capable of being installed along with a host machine in a region of possible gas outburst and the mine general equipment installed in a nongassy or low-gas electrical equipment control room or chamber form the whole control device which is used for controlling large and medium mine belt conveyors, and the high cost performance is obtained. The explosion-proof equipment comprises a mine intrinsic safety type control console and a mine explosive-proof display screen and further comprises a mine explosive-proof and intrinsic safety type programmable control cabinet; the mine general equipment comprises a power supply line incoming cabinet, a rectifier transformer cabinet, a power supply feed cabinet, transducers, a control power supply line incoming cabinet, a control power supply feed cabinet, and the like, and further comprises a programmable control cabinet; and according to the actual conditions, a programmable control part can adopt a mine explosive-proof and intrinsic safety type or mine general type.

Description

technical field [0001] The invention belongs to the mine belt conveyor control technology, and proposes a belt conveyor control device in the mixed form of mine explosion-proof type and mine general type, which is mainly used for dragging and controlling large and medium-sized mine belt conveyors. control. Background technique [0002] As various soft start devices are gradually replaced by frequency conversion devices, at present, in the control devices of small and medium-power main inclined shaft belt conveyors in coal mines, most of the speed regulating devices are low-voltage (≦1140V) explosion-proof frequency converters, mainly There are the following disadvantages: 1) According to the requirements of consistency, the key components and structures in mine explosion-proof products must be consistent with the drawings and data archived in the coal safety certification, which is not conducive to making flexible equipment for specific mine belt conveyors. Configuration; ...

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Problems solved by technology

[0002]As various soft start devices are gradually replaced by frequency conversion devices, at present, in the control device of the main inclined shaft belt conveyor with medium and small power in coal mines, the speed regulation Most of the devices are low-voltage (≦1140V) explosion-proof inverters, which mainly have the following disadvantages: 1) According to the requirements of consistency, the key components and structures in mining explosion-proof products must be consistent with the drawings and data archived in coal safety certification, which is not conducive to According to the actual situation of the mine belt conveyor, the flexible configuration of the equipment is made; 2) The driving device of the belt conveyor is located at the control site, and the power supply device is installed in the power distribution station. Usually, the distance between the two is very far, and the low voltage power supply causes The power supply current is large, the line loss is large, the efficiency is low, and the cable with thick wire diameter is required, and the installation cost is high; 3) The drive device with the same power, in terms of equipment cost, the explosion-proof type is much higher than the mine-used general type; 4) Drive The power is limited, usually the power of a single motor does not exceed 630kW; 5) The high-power explosion-proof high-voltage inverter has not been successfully applied, even if the high-power explosion-proof high-voltage inverter is successfully applied in the future, the cost will be much higher

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