Device for control over operation mode of ventilating installation

FIELD: machine building.

SUBSTANCE: device is equipped with autonomous sub-system of control over separate ventilating installation. The sub-system consists of a mode setting block, of an electric engine smooth start-up block, of a control block, outputs of which are connected to inputs of actuators of working wheel blades turn and turn of the gate of the ventilator, of sensors of working wheel blades position and gate position and of a metre of current voltage or electric engine exciting current. The device is additionally equipped with autonomous sub-systems of control over separate ventilator installations. Each sub-system contains an actuator for control over brake, the input of which is coupled with the output of the control block, pressure and brake gauges and a micro-processor controller including a "driving-driven" mode switch block, an input-output module and a micro-processor module. The outputs of the sensors of working wheel blades position, gate position, feed voltage or electric engine exciting current, gauges of pressure and brake are connected with corresponding inputs of the input-output module. The block for electric engine smooth start-up of each autonomous sub-system is made in form of a combined block of a smooth start-up-adjustment of excitation (SSB/EAB). The latter is used as a block of smooth start-up with phase control at application of an a-synchronous electric engine and as a block for adjustment of excitation current at application of synchronous electric engine of the ventilator. The microprocessor controller is coupled with the electric engine of the ventilator via the module of input-output and SSB/EAB.

EFFECT: increased reliability of control over installations containing several ventilator aggregates with a-synchronous or synchronous electric engines.

2 cl, 1 dwg

 

The invention relates to a fan installations, namely, to control their operation, in particular, during automatic control of the fan units mine and tunnel ventilation underground.

A device for controlling the mode of operation of the fan installation (patent No. 2064587, CL E21F 1/00, 1996), containing a program controlled unit approval pressures, made in the form of a digital controller, to the first input of which is connected to the unit job pressure and installed on the outlet of the fan pressure sensor, position sensor blades and the rotational speed of the impeller, the outputs of which are connected with inputs of block matching pressures. In addition, the device contains a power supply, combined with a block of soft start and braking unit and the power supply to the electromagnetic clutch connecting the shafts of the motor and fan.

The disadvantage of this device is functional complexity, low reliability control mode ventilation unit, as well as its high cost due to the presence of a number of complex blocks and redundant links.

Closest to the claimed technical essence is a device for controlling the mode of operation of the fan installation (patent No. 2146331, CL E21F 1/00, 2000), contains a programmable control unit, the lock set options actuators rotate the blades of the impeller, the elements of the gate with their position sensor, and the outputs of the sensors are connected to corresponding inputs of a programmable control unit associated with the remote control module and a smooth start of the fan motor.

The disadvantage of this device is that it cannot apply when using for the fan drive with synchronous motor, and the impossibility of its use in the management of parallel fan units and the remote control mode from the Manager or the upper-level computer.

The aim of the invention is the control unit that contains multiple fan units, to drive using asynchronous or synchronous motors.

This objective is achieved in that the control device has a stand-alone engine management of individual fan units (BBG), microprocessor controllers which are equipped with blocks mode "master-slave"modules I / o and microprocessor module, and the electric fans powered through module I / o, and the combined unit PPO/BRV, which is used as a unit soft start (PPO) with phase control in case of skin is of an asynchronous motor or as a unit controlling the excitation current in the case of a synchronous motor of the fan. This microprocessor-based controllers of Autonomous control systems, ventilation units are equipped with individual control panels are connected to each other through the modules, I / o and microprocessor controller MKUU (PC) at the top level. At the same Autonomous system management fan units BBG1, BBG2, BBGncontain blocks of actuators control the rotation of the blades of the impeller, the brakes, the opening of the gate apparatus of the fan and drives technological equipment ventilation unit, and the fans are equipped with pressure sensors fan, the position of the gate and the blades of the impeller of the fan, brake rotor, temperature and vibration bearings, excitation current or voltage of the fan motor, as well as the condition of process equipment ventilation unit.

In the drawing figure 1 presents the block diagram of the control device of the fan installation, which includes the Autonomous system fan speed control BBG1, BBG2containing a microprocessor-based controllers MK1, MK2fan speed control, fan1In2and the motors of the ED1The ED2, combo units PPO/BRW soft-start and maintains the state of excitation of a synchronous motor of the fan, and microprocessor controller (computer) upper level MKUU and block set modes.

Microprocessor controllers MK1and MK2management subsystems BBG1and BBG2contain the module I / o 2, microprocessor module 1, unit 4 switch modes master-slave, and BBG1and BBG2equipped with individual control panels 5 and block 3 actuator control fan and installation. Subsystem OMS1and BBG2also contain actuators 6 of rotation of the blades of the impeller, the brake rotor 7, the control gate of the fan 8 and the control of technological equipment installation 9, the inputs of which are connected respectively to the first, second, third and fourth outputs of the unit 3 control of actuators of the fan unit. The fan units are equipped with sensors: a 10 - state of technological equipment, 11 - actual pressure fan, 12 - position of the blades of the impeller, 13 - position of sliding apparatus 14 and 15 of the temperature and vibration of the bearings of the fan rotor, 16 - position brake rotor and 17 - sensor supply voltage or excitation current of the motor, the outputs of which are connected respectively with 1, 2, 3, 4, 5, 6, 7 and 8 input module I / o 2.

The control system also includes a block 18 set modes pressure ventilation unit, the input of which is served raw data to determine the required (specified) pressure, for example, NL(the number of people in the mine), TAnd(t) (air temperature), etc. Functions of the block 18 can be performed programmatically microprocessor controller MK "leading" SUV.

Control of an operation mode of the fan installation is performed in the following sequence.

On microprocessor controllers MK1, MK2etc. staff through blocks 4 is set to the mode "leading-slave", "master" on the installation consisting of several subsystems SUV may be only one controller. After entering the install command "start" from the system controller (computer) upper level MKUU first run the fan unit, the mode controller which is defined as "leading".

After running the fan installation unit 18 job parameters produces the value of the specified pressure ventilation unit R3(t), if the fan is not working and the actual pressure PF(t) is zero - microprocessor controller MK1through the module "I / o" 2 outputs a signal on the PPO block1 /(BRV1and by the PPO block by a smooth increase of the voltage U launches first motor fan1. After turning on the fan In1if the actual pressure Pf(t) is less than R3(t), the digital controller implemented on the basis of microprocessor controller, via the actuating unit 3 outputs a signal to the actuator 6 to increase the angle of the blades of the impeller. In case of equality given R3(t) and the actual Pf(t) pressure ventilation unit rotation of the blades of the impeller is stopped. In the process, if the actual pressure ventilation unit is less than specified, the host microprocessor controller launches installed in parallel slave fan unit, and then simultaneously increasing the angles of the blades of their wheels to the position at which RF(t)=P3(t).

In the case of use as a fan drive of the synchronous motor unit PPO/BRW controls the excitation current J of its rotor as a function of position of the blades of the impeller, for example, as specified in the description of the patent No. 2129688 on application No. 96121324 from 28.01.98.

If necessary reversal mode in ntestinal installation when the unit 18 set modes gives the job in the form of negative pressure, i.e. P3(t), microprocessor controllers MK1and MK2subsystems BBG1and BBG2through blocks their actuators 3 deploy the blades of the impeller to angles equal to 135, which leads to the reversal of the modes of the ventilation unit, i.e. PF(t)=-R3(t).

If necessary, turn off the fan installation when P3(t)=0, first off slave fan unit, then closes his cyberwise machine, and then turn off the master unit, closes his cyberwise apparatus and included them standing brakes.

1. The device control mode ventilation unit containing an Autonomous management subsystem separate fan unit, including the unit set modes, block soft start motor control unit, the outputs of which are connected to the inputs of the actuators of rotation of the blades of the impeller and the gate of the fan, the position sensors of the blades of the impeller, the provisions of the gate and the sensor supply voltage or excitation current of the motor, characterized in that the device is equipped with additional independent subsystems management of individual fan units, being the m each Autonomous management subsystem separate fan unit contains the actuating mechanism for the brake control, an input connected to the output of the control unit, pressure sensors and brakes, and a microprocessor controller including block mode "master-slave"mode, the module I / o and microprocessor module, and the outputs of the position sensors of the blades of the impeller, the provisions of the gate supply voltage or excitation current of the motor, pressure and brakes are connected to respective inputs of the module I / o and block soft start motor each Autonomous management subsystem separate fan unit made in the form of a combined block soft start control excitation (PPO/BRV), which is used as a unit with soft start phase control in the case of the use of the asynchronous motor, and the control unit of the excitation current in the case of the synchronous motor of the fan, with microprocessor controller through module I / o and PPO/BRW connected to the fan motor.

2. The device according to claim 1, characterized in that the device is equipped with a microprocessor-based controller top level, and each Autonomous management subsystem separate fan is equipped with individual remote control, and microprocessor-based controllers of Autonomous subsystems separate control of the fan and connected by input-output and with a microprocessor-based controller top level.



 

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FIELD: mining.

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10 cl, 2 dwg

FIELD: mining.

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1 ex, 2 tbl

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FIELD: mining.

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1 dwg

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EFFECT: higher efficiency.

2 dwg

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