Low Prices marble crusher plantvendo maquina de trituradora de aluminhoprocedimiento de trabajo en una trituradoraque son trituradora de impacocompro celdas de flotacionIndex
производство с использованием пес
by John Martin hastie - 09:50 on 05 June 2013
производство с использованием пес Leader & Harvest high voltage inverter in rebellious hammer crusher First, the user profile Weishan with Thai Coking Co., Ltd. The main products of coke, crude benzol, coal tar, sulfur ointment, on the basis of multi-party research and market analysis, along with the development of the global economy, coke demand will also continue to increase, China's coke export volume and export prices are still rising, the future price of coke will be smooth or slight concussion climbed mainly, the coke market entry stage of stable development. Second, the equipment and technology, and load parameters 2.1 Process Flow Process schematically Antagonistic hammer crusher is one of the main equipment for crushing raw coal production line, with a crushing ratio, high production capacity, uniform particle size, the uniformity of the size of a grain is directly related to the yield and quality of the coke. Uniform wear to get the ideal nesting grain and hammer, vibrating feeder or dedicated into the trough along the full length of the feed inlet on uniform feed. Material into the crushing machine by the impact of the high-speed rotation of the hammer crusher and high speed toward the broken plate again broken rebound after crushing plate again bomb to hammer the materials in the crushing cavity after repeatedly collide and collide with each other and broken, in the lower part of the counter plate body discharge outlet. Product particle size is determined by the rotational speed of the rotor and the rotor and crushing plate gap. The reversible hammer breaking equipped with broken plates on both sides, the rotor can be bi-directional operation can take full advantage of both sides and on both sides of the broken hammer board. ? Reversible hammer crusher structure? Can the rebellious hammer crusher, map the discharge port Figure 2.2 load parameters # 1 crusher # 2 crusher VVVF System Reform Project Inverter using a drag used to automatically bypass drive 630KW and 450KW motor, and possess a positive reversal function. The 3.1 main loop program Rationale: drag used to automatically bypass operation system, it is made up of six high-voltage isolation switch QS41 ~ QS43, QS51 ~ QS53 form (see below). Including QS42 and QS43, QS52 and QS53 mechanical interlмойки пескаock device installed; QS42 and QS52, QS41 and QS51 electrical interlock. Two-way power supply, M1 work in the frequency, M2 work-frequency state, QS43 and QS51 QS52 sub-gate, QS42, QS41 and QS53 in the closing state; M2 work in the frequency, M1 work in work frequency state, QS42 and QS41, QS53 sub-gate, QS51, QS52 and QS43 in the closing state; If overhaul inverter, QS43 and QS53 can be in any state other isolation switch for the gates, two load power frequency running; any motor variable frequency operation when the overhaul of the way power by division and isolation switch. Features: Under normal circumstances, allow a load in the frequency, another load of work in the frequency state can also be two in power frequency state. System Components The HARSVERT high voltage inverter unit series multi-level technology, direct 10kV input directly 10kV output. By phase-shifting transformers, power unit and controller, the typical structure is shown below. The system consists of 24 power modules, every eight power modules in series to form one phase, a three-phase Y-connected, the directly to 10kV motor powered. Transformer Input the sway-phase transformer high-voltage transformation of the network side groups of low pressure in the secondary side, the secondary windings wound Yanbian Delta Connection, the phase difference between. The system transformer secondary windings divided into eight mutual phase shift of 7.5 °, constitute a 48-pulse rectifier. This multi-level shift phase superimposed rectifying mode, eliminating most of the harmonic current caused by independent power modules, can greatly improve the current waveform of the network side, the network side of the inverter current is approximately sinusoidal, it load the next network side power factor of 0.96. Power Modules Each level in the secondary winding of the phase-shifting transformer output as the three-phase input of each power module. The power module is the basic unit of the VVVF inverter output the VVVF inverter feature is achieved by a single power module, each power module are equivalent to a single AC - DC - AC voltage single phase low voltage inverter. Power module rectifier diode three-phase full-bridge the not controlled full-wave rectifier, electrolytic capacitors виды оборудования мельничного комfiltering and energy storage in the middle, the output side for four IGBT H-bridge circuit structure as shown below. Internal circuit structure of the power module The output side of the structure The output side of each unit U V output terminal connected with each other made the connection of star power to the motor by PWM waveform for each unit reorganization stepped sinusoidal PWM waveform can be obtained. Good of this sinusoidal waveform, dv / dt, without damage to the cable and motor insulation, no output filter, you can extend the length of the output cable. Control system The inverter control system receives a control command of the user, trigger, blockade, bypass control, each of the power module to provide the appropriate frequency and voltage output of the inverter. The control system also monitors the status of the various components of the inverter, fault diagnosis, fault alarm and protection. In order to achieve the control part and completely reliable isolation of high-pressure section, using optical fiber communication between the controller and power module technology, the system has a very high level of security, but also has good resistance to electromagnetic interference performance. 3.3 Functional Description (1) frequency conversion device control sub-body, on-site operation box, DCS three control modes (2) frequency device to start using two kinds of ways; The first way is self-qualified high-voltage variable frequency equipment, drive start automatically; Second on the high-voltage inverter self-qualified after receiving a start command to start; 2 kinds of start-up mode selected by starting running start; equipment can only be separately run one way . (3) on-site operation box includes: start, stop, stop, reversing selected, power-up or properly activate the selected button or switches, while the corresponding indicator to indicate, at the same time have the speed to adjust the speed display feedback speed, motor current display (digital display). (4) For reversible hammer crusher heavy equipment requirements in strict accordance with the provisions of the date of the alternate use of prevent sided hammerhead long-running, and severely damaged. The drive is running, you can switch disconnector select any load, motor running direction can be rotated by the operation box on the pros and cons of setting functions to choose, the control system automatically bring up the corresponding motor parameters. Site operation box interface top row shows the load power and the running direction Fourth, after thпроизводство с использованием песe transformation of the high-voltage inverter energy savings Accumulated 300 days a year to run, the electricity price of 0.5 yuan. For special load crusher, process performance requirements for full-speed running. 4.1-frequency and variable frequency energy consumption (1) 630kW power frequency calculated annual consumption: The motor rated input voltage: 10kV Motor rated input current: 30A Power Factor: 0.82 The formula is: P = 426kW Years running time: T = 300 * 24 = 7200h Cumulative annual power consumption: 3,067,808 degrees Therefore, using frequency operation years with electricity: 1.534 million yuan (2) 630KW inverter annual consumption is calculated: The motor rated input voltage: 10kV Motor rated input current: 21A Power Factor: 0.82 The formula is: P = 298kW Years running time: T = 300 * 24 = 7200h Cumulative annual power consumption: 2,147,466 degrees Therefore, the frequency operation years with electricity bills: 107.3 million (3) 450KW power frequency annual consumption calculation: The motor rated input voltage: 10kV Motor rated input current: 24A Power Factor: 0.78 The formula is: P = 324KW Years running time: T = 300 * 24 = 7200h Cumulative annual power consumption: 2,334,527 degrees Therefore, using frequency operation years with electricity bills: 116.7 million (4) 450KW inverter annual consumption is calculated as follows: The motor rated input voltage: 10kV Motor rated input current: 16A Power Factor: 0.78 The formula is: P = 216kW Years running time: T = 300 * 24 = 7200h Cumulative annual power consumption: 1,556,351 degrees Therefore, the frequency operation years with electricity bills: 77.8 million 4.2 Energy-Efficient Computing Fifth, the operation of the motor frequency converter Using VVVF benefits: (1) due to the equipment used interchangeably, calculated in accordance with a single year total running time, the transformation of the drive to achieve the expected energy saving effect. (2) motor soft start motor starting current is far less than the rated current, reduce pollution on the grid. (3) reduce the start-mechanical torque of the motor mechanical damage, reduce noise and extend the life of the motor, to extend the life of many components. (4) can be antagonistic hammer crusher special load, largely collapsed material, especially material inlet collapsed material blocking material more serious impact, when the collapse of material occurs load volatile. Vector control the torque calculation speed is very fast, when the load changes can be limited to the rated torque to prevent overload to avoid accidental tripping. (5) The control system can automatically identify the motor reversing operating parameters to eliminate human mistakes modify the parameters appear. VI Summary Through the transformation of the system can be antagonistic hammer crusher, improve the production process, and to extend the life of equipment, and achieved good economic benefits. 'Add your comment
Please note that whenever you submit something which may be publicly shown on a website you should take care not to make any statements which could be considered defamatory to any person or organisation.
