Coal quantity calculation and control system for coal feeder of heat engine plant
A control system and coal feeder technology, which is applied to conveyor control devices, conveyors, conveyor objects, etc., can solve problems such as coal feeder tripping, and achieve the effects of stable operation, low cost, and convenient coal quantity calibration.
Pending Publication Date: 2021-07-09
DATANG QITAIHE POWER GENERATION
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Problems solved by technology
[0003] The purpose of the present invention is to provide a coal feeder coal volume calculation and control system in a thermal power plant to solve the problem of tripping of the coal feeder caused by the aging of the on-site coal feeder, so that the operation of the coal feeder is more stable, and the calibration of the coal volume of the coal feeder is more accurate. Convenience, lower cost, no routine maintenance
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[0016] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0017] ginseng figure 1 As shown, the present embodiment provides a coal feeder coal quantity calculation and control system in a thermal power plant, including a programmable logic controller (PLC), and the programmable logic controller is connected to the DCS system through a data transmission module;
[0018] The programmable logic controller is used to obtain the millivolt signal of the weighing sensor and the pulse signal of the speed of the coal feeder, and obtain the amount of coal through calculation;
[0019] The DCS system is used to obtain coal output data for the operator to monitor the coal amount. When the coal feeder control is manual, the DCS system direct...
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The invention relates to a coal quantity calculation and control system for a coal feeder of a heat engine plant. The system comprises a programmable logic controller connected to a DCS through a data transmission module, wherein the programmable logic controller is used for obtaining millivolt signals of a weighing sensor and pulse signals of the rotating speed of the coal feeder, and obtaining the coal output through calculation; the DCS is used for acquiring coal output data for an operator to monitor the coal quantity, when the coal quantity of the coal feeder is manually controlled, the DCS directly controls the output of a frequency converter of the coal feeder, and at the moment, open-loop control is realized; and when the coal feeder is automatically put into use, the programmable logic controller compares the calculated coal quantity with a given coal quantity value, and controls the output of the frequency converter of the coal feeder through PID output. The system can solve the problem that the coal feeder trips due to aging of the coal feeder on site, the coal feeder runs more stably, the coal quantity calibration of the coal feeder is more convenient, the cost is lower, and running maintenance is maintenance-free.
Description
technical field [0001] The invention belongs to the technical field of thermal power generation, in particular to a coal quantity calculation and control system for a coal feeder in a thermal power plant. Background technique [0002] The existing calculation and control of coal quantity are integrated in the control of the on-site calculus. Due to the serious aging of the electronic components of the calculus and the poor environment at the furnace side, the calculus often breaks down, causing the coal feeder to trip, etc., which seriously affects the safety of the unit. Stable operation. Contents of the invention [0003] The purpose of the present invention is to provide a coal feeder coal volume calculation and control system in a thermal power plant to solve the problem of tripping of the coal feeder caused by the aging of the on-site coal feeder, so that the operation of the coal feeder is more stable, and the calibration of the coal volume of the coal feeder is more...
Claims
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Login to View More IPC IPC(8): B65G43/08
CPCB65G43/08B65G2203/042B65G2203/0258B65G2203/02
Inventor 侯建勋云梓航张宇云战勇曲振远朱同鑫
Owner DATANG QITAIHE POWER GENERATION