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Product model: sc-grd-1000 dumping resistance melting insulation furnace
Name: dumping resistance melting insulation furnace
(ii) overview
GRD series well heating furnace is composed of furnace body, electric control and hydraulic system. The shell of furnace body is welded by steel plate and section steel. Aluminum silicate fiber and high quality insulation materials composed of composite furnace lining, heating elements made of coiled spiral placed on the shelf brick, the furnace cover with a whole or on the different forms of opening and closing. The discharging way adopts hydraulic tilting system, and the crucible adopts imported brand graphite crucible.
Introduction of heating and electrical control system is as follows:
1. Main components
(1) heating element - resistance belt, 2 turns/phase, three phases.
(2) temperature detection element - thermocouple. Each set contains two thermocouples, one for the furnace atmosphere temperature detection, improve efficiency, protect the furnace body; One tube is used for temperature detection of aluminum water. Silicon nitride is selected as the material of thermocouple protection sleeve, so the temperature detection is accurate and does not affect the material of the product.
(3) control system: the temperature control is in the semi-conductor automatic proportional control mode. The temperature adjustment meter is divided into 2 sections for the measured value and set value. Proportional control for the furnace temperature and the temperature of liquid aluminum. Install abnormal alarm of furnace temperature and aluminum liquid temperature. Temperature meter (brand: Taiwan), electronic voltage regulator, contactor, relay, etc. Electric control using advanced PID control system, equipped with intelligent temperature controller and power regulator, according to the temperature automatically adjust the power, greatly save energy, and ensure the temperature stability, temperature control accuracy up to ±3℃. And can overtemperature alarm, operation button and light display, to achieve the heater on and off and furnace temperature rise and fall control. The crucible adopts imported graphite crucible.
Name specification brand number
1. Control cabinet 1700*1000*350mm 1
2. Temperature controller TAISE(with PID adjustment) 2
3. Power regulator Taiwan tai-si 1
4. Some low-voltage appliances schneider
5. Domestic thermocouple (including aluminum water temperature measurement thermocouple with sleeve) 2
6. Some domestic conductors
The diagram shows the main components of the electrical system
2. Introduction to electronic voltage regulator (PID control)
Thyristor is adopted as the main control element, and the output current and voltage are controlled by the change of thyristor conduction Angle. The controller has a variety of protection functions to ensure that the controller will not damage the external equipment in case of failure. Function function is :1, soft start 2, overcurrent protection 3, overtemperature protection. Specifically, when the load fault current or temperature rises out of the operating range of the controller, the controller can automatically turn off the pulse output and stop the load power supply.
Working voltage three-phase ac 380V access
Control mode manual potentiometer adjustment or automatic control signal 0~5VDC
Soft start function about 0.5s after power
The average time of action is about 0.5s at 110% rated current limit
5. When the rated current of overcurrent protection is 150%, the output pulse is blocked and the operation time is 10MS, which is kept until the shutdown
Pulse train frequency 1KHZ
Output trigger pulse current 200mA℃
Operating environment temperature -10℃~+45℃
9 humidity T=20℃
10 elevation
Install no gas, dust, inflammable, explosive or corrosive medium that seriously affects the insulation performance
Install in the place without violent vibration and turbulence
The chart is the main technical index of PID control
Technical parameters
Model power (KW) rated
Voltage (V)
Phase number heating element connection crucible
capacity
(KG) main purpose of heating zone
(aluminum alloy)
Sc-grd-1000 120 380 3 YY 900 2 melting, heat preservation
The scope of fortifications
(I) work area of users:
1. Power supply (supply power: three-phase five-wire 380V±10%, 50Hz± 3hz; Control power supply: 220V±10%, 50Hz± 3hz)
2. Provide on-site mobile equipment of furnace body
3. Other equipment and personnel other than the furnace itself.
(ii) scope of works of the contractor:
1. Production of furnace body and relevant accessories
2. Site foundation works
3. Production of control system
4. Painting works
5. Installation and debugging works
6. Train the operator on site
7. Equipment transportation works
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