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Energy saving scheme of die casting machine of asynchronous servo
Directory
1 project service introduction. 3...
2 quantitative pump casting machine energy consumption analysis..... 3
2.1 quantitative pump casting serious waste phenomenon... 3
2.2 quantitative pump casting machine oil pump motor power consumption ratio... 4
3 quantitative pump casting machine energy-saving principle. 4...
3.1 quantitative pump die-casting machine working principle... 5
3.2 quantitative pump casting machine energy-saving principle..... 5
3.3 power saving and power loss analysis. 6...
4 quantitative pump casting machine energy-saving plan. 6...
4.1 system transformation method..... 6
4.2 system schematic..... 7
4.3 dynamic vector control without tripping operation. 8...
4.4 dynamic vector under the control of high accuracy of speed stability. 8...
4.5 dynamic vector control frequency and large torque and stable operation of... 8
4.6 dynamic vector control performance..... 8
4.7 asynchronous servo Saver environmental design..... 9
Die casting machine 5 asynchronous servo energy-saving advantages... 9
6 energy-saving investment benefit analysis. 10...
7 price and terms of service... 10
7.1 offer..... 10
7.2 the terms of service. 11...
The 8 part is the case... 11
9, qualification and certificate... 12
The introduction of the 1 project services
Tianchang Haiyuan electromechanical trade Co., Ltd of Shenzhen City BlueOcean Huateng Technology Co., Ltd. agents, providing energy-saving project service for enterprise Professional Company.
Shenzhen City BlueOcean Huateng Technology Co., Ltd. is a company with independent intellectual property rights, professional commitment to the inverter, servo drive controller, electric vehicle power electronic products R & D, manufacturing, sales and service of the "national high-tech enterprise" and "double-soft enterprises". With driver development platform for fourteen years, BlueOcean Huateng mastered the technology of dynamic vector most advanced servo control industry, in the field of energy saving of die casting machine, the world's first asynchronous servo, to promote the new technology revolution and energy-saving industry die casting machine.
"The job is to spread love" is the fourteen years of experience in the industry BlueOcean Huateng energy team I won't change any day mission and action rule. In fourteen years, we have been focusing on energy saving of die-casting machine, Shenzhen city is the first generation of energy conservation team, Shenzhen energy-saving R & D center core members.
Analysis of 2 quantitative pump energy consumption of die-casting machine
The project is energy saving scheme for energy metering pump pressure die casting machine, die casting machine around the pump energy consumption analysis is the premise of the project.
2.1 quantitative pump casting machine exists serious waste phenomenon
Quantitative pump casting process is generally divided into locking, storage, injection, turbocharged, cooling, mold, thimble, taking several stages, each stage requires the flow and pressure are different, the oil pump motor, die casting process is in a state of change of load. In the hydraulic system, quantitative pump, oil pump with constant flow, redundant hydraulic oil back to the oil tank through the overflow valve, this process is called high pressure throttle. According to the statistics of energy losses of up to 25% ~ 70%.
Quantitative pump casting machine energy consumption shows as shown below:
2.2 quantitative pump oil pump motor power consumption ratio of die casting machine
Quantitative pump casting machine oil pump motor power consumption of the entire device power consumption accounted for more than 95% (not including the furnace energy consumption).
Energy-saving principle of die casting machine 3 quantitative pump
We set about possibility and energy-saving space analysis of its energy saving from the work principle of quantitative pump casting machine, in order to design the energy efficiency optimization project.
Principle 3.1 quantitative pump die-casting machine
Die casting machine working process is shown in the following figure, can be roughly divided into seven processes: locking, storage, injection, turbocharged, cooling, the mold, a thimble, every process of the working speed and pressure is different, in addition to high pressure mode locking, storage and booster sometimes need large velocity and pressure outside, other processes are working on speed and pressure is small, the velocity and the pressure is on the flow proportional valve and proportional pressure valve to regulate, through the opening degree to control the flow rate and pressure regulating valve and proportional pressure valve.
Energy-saving principle of die casting machine 3.2 quantitative pump
Die casting machine electricity consumption in the main oil pump motor, so reducing the pump motor power consumption is the key to energy saving of die casting machine. In the hydraulic system, quantitative pump, motor in 50Hz high-speed operation, fuel supply pump is basically unchanged, the actual traffic demand is far greater than the condition of die casting machine, high pressure oil surplus through the relief valve is returned to the oil tank, there is a huge waste of energy. But oil and motor oil pump speed is proportional to, so we can reduce the speed of the motor in each action, the actual flow of supply and demand of die casting machine oil pump is consistent, virtually eliminates the overflow phenomenon, in order to achieve the purpose of energy saving.
Analysis of 3.3 power saving and power loss comparison
Energy-saving plan 4 quantitative pump casting machine
4.1 system transformation method
Quantitative pump casting machine energy saving is one of the most difficult field of energy-saving motor technology, because of the die casting machine load in one work period is rapidly changing, and often die change, but also to ensure the production efficiency and product quality is not decreased. The inverter is difficult to achieve stability and ideal energy saving effect, frequency converter torque is small, there is no feedback function of hydraulic system, unstable, prone to reject, reduce the production efficiency, power saving rate is low.
Asynchronous servo Saver torque, compared with power, 1.3 ~ 1.5 times larger than the frequency converter, a feedback function, fast dynamic response, the hydraulic system stability, can improve production efficiency, ensure product quality is not reduced, the saving rate is high.
Asynchronous servo Saver, a plurality of signal control, proportional and proportional pressure signal of die casting machine as the main input signal power saver; because the proportion of flow and pressure signals are not fully meet the casting process requirements, so in addition to increase several control signal is used as the auxiliary input signal asynchronous servo saver for fine-tuning, the industry known as the "main and auxiliary" control, also known as "control", to ensure accurate and stable operation of the die casting machine.
4.2 system schematic
Parameters of asynchronous servo saver settings humanized, can make debugging, maintenance is simple and convenient; the international standard design, with IEC, EMC, EMI and CE standard, fully meet the low noise, low electromagnetic interference user requirements of environmental protection, and excellent acceleration and deceleration characteristics, current and voltage steady speed precision, excellent the control technology, stable running without tripping. Design unique, wide voltage range and strict dustproof design, have a stronger ability to adapt to the harsh, high temperature, high humidity and electric dust, improve product reliability, fully shows the advantages of high performance asynchronous servo saver in industry of die casting machine.
4.3 dynamic vector control without tripping operation
(1) the dynamic vector under the control of acceleration and deceleration characteristics: die casting machine is urgent urgent super speed regulation in dynamic vector control, induction servo saver with 0 second command acceleration, stability without tripping operation.
(2) 200% of the rated load sustainable working conditions of 0.5 seconds, 180% rated load sustainable working conditions of 10 seconds, 150% rated load sustainable working conditions of 1 minutes, 10 minutes for the interval inverse time characteristic.
4.4 dynamic vector under the control of high accuracy of speed stability
The dynamic vector under the control of steady speed precision can reach 0.2%, change fast response die-casting machine accurately the actual speed and pressure.
4.5 dynamic vector control frequency and large torque and stable operation
(1) speed estimation and rotor flux orientation accurately, in the 0.25Hz mutation load torque can quickly response and stable operation.
(2): 0.25Hz starting torque can reach the rated torque 180%.
4.6 dynamic vector control performance
(1) to realize the AC motor decoupling control, the operation of DC, can realize control in the speed sensorless control of speed.
(2) the speed sensorless vector control of four quadrant operation under dynamic motor, torque, speed, current and DC bus voltage of fast response, stable operation of motor.
(3) motor and turned the zero speed when switching current, no phase change and concussion, speed of no pulsation.
4.7 asynchronous servo Saver environmental design
(1) using the independent air hermetic design
Asynchronous servo saver with independent air fully sealed design, design of the wind from the asynchronous servo saver on both sides of the top air inlet, outlet, make up the bottom of domestic brand Festival appliances into the wind, the wind defects, greatly reducing the dust, debris into the induction servo power saving device. The radiator and the fan can be individually cleaning and maintenance, maintenance is more convenient.
(2) the dustproof and waterproof streamlined design
Asynchronous servo saver with dustproof and waterproof streamlined design. The wire inlet hole are equipped with sealing protection ring, to prevent dust and debris into the cabinet body; the cabinet design around the water channel, will be general rainwater, oil flow away from the water drainage, and can not enter the asynchronous servo saver.
The advantages of die casting machine 5 asynchronous servo energy-saving transformation
(1) the saving rate is in commonly 25% ~ 70%, the saving rate depends mainly on the mold process parameters of the speed value (0 ~ 99%), the speed value is greater, the saving rate is low, the speed value is small, the saving rate is high, the energy saving rate and velocity values are inversely proportional to.
(2) to enhance production efficiency of die casting machine.
(3) saving and not saving state easily switch, asynchronous servo Saver failure does not affect the production.
(4) using three-phase asynchronous motor without demagnetization risks.
(5) the installation is simple, do not need to change the motor and pump, high ratio of performance to price.
(6) the work of environmental noise is obviously reduced, greatly reduce the system temperature.
Analysis of 6 energy saving and investment benefit
The quantitative pump 1 die-casting machine motor power 30KW as an example
(1) if not energy-saving state, the motor load rate (load rate = motor power consumption per hour / motor power) is 60%, is not the energy state of the motor power consumption per hour: 30KW * 60% = 18 degrees
(2) working time by 24 hours a day, 30 days a month on average, electricity 0.9 yuan / degrees, the monthly electricity: 18 × 24 hours 30 days × 0.9 yuan / degrees =11664.00 yuan
(3) if the saving rate 40%, the monthly electricity saving benefit: 11664 yuan x 40%=4665.60 yuan
(4) energy-saving 800 yuan per kilowatt, need to invest 24000 yuan.
(5) estimated investment recovery period is 5 | | | author: Published at: 2013/5/17 10:11:47 |  |
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