对有色金属感应加热的感应器的设计
发布时间：2018-11-10 16:19
【摘要】：感应加热技术目前是对金属材料加热效率最高、速度最快，且低耗环保的一种加热技术，已经广泛应用于对金属的热加工、热处理及焊接、熔炼等工艺中。目前，若对金属物体进行快速的加热或者想要有效地加热一些有色金属，例如铜、铝等合金，需要感应线圈产生很强的磁场，以往的感应线圈基本上由一层铜管或铜皮绕制，若要产生很强的磁场需要在线圈上加很大的电流，，这势必会增加变压器副边绕组和感应线圈的功耗，降低能源利用率。针对上述现象，本论文创新地提出把传统的单层感应线圈改成双层叠加绕制的线圈，这样可以减小其副边绕组的磁损耗，使两个感应线圈的电流大小相等且感应线圈内部产生更强的磁场，放在线圈内部的金属产生更大的涡流，从而实现快速加热的目的，提高生产效率，同时提高能源利用率，可广泛适用于各种金属的加热。本论文的主要内容包括如下： 1.设计双层螺旋形感应线圈的模型：即双层串联顺接和双层并联顺接两种模型，通过这两种线圈去加热工件的耦合等效电路来分析影响电效率的关键参数； 2.根据设计的模型，选用铜皮和空心铜管分别绕制不同匝数、内径的单层、双层串联顺接和双层并联顺接螺旋形感应线圈； 3.用LCR-819电桥和变压器去测量这些线圈空载时和放入铜铝合金、空心铜棒情况下的电阻、电感和品质因数值，通过测量值计算、比较和分析它们的电效率，从而找出一个合适的参数的双层线圈，使其对铜、铝等合金材料的电效率能够达到一个合理数值； 4.用绕制的双层并联感应线圈连接变压器和感应电源去加热铜铝合金工件，记录空载和有载时的电流值，来计算实际的电效率值，以验证双层感应线圈在实际应用中的可行性。
[Abstract]:Induction heating technology is a kind of heating technology with the highest heating efficiency, the fastest speed and low consumption and environmental protection. It has been widely used in hot processing, heat treatment, welding and smelting of metals. At present, if metal objects are heated quickly or some non-ferrous metals, such as copper and aluminum alloys, can be effectively heated, a strong magnetic field is required from the induction coils, which in the past were basically made of a layer of copper tubes or copper coils. If a strong magnetic field is to be generated, a large current must be added to the coil, which will increase the power consumption of the secondary winding and induction coil of the transformer, and reduce the energy efficiency. In view of the above phenomenon, this paper innovatively proposes to change the traditional single-layer induction coil into a double-layer superposition winding, which can reduce the magnetic loss of the secondary winding. The current of the two induction coils is equal and the inductive coil produces a stronger magnetic field, and the metal placed inside the coil produces a larger eddy current, thus achieving the purpose of rapid heating, increasing production efficiency, and increasing energy efficiency at the same time. It can be widely used in the heating of various metals. The main contents of this thesis are as follows: 1. The model of double helical induction coil is designed, that is, two kinds of models of double layer series and double parallel connection. The coupling equivalent circuit of the two coils to heat the workpiece is used to analyze the key parameters that affect the electric efficiency. 2. According to the designed model, the spiral induction coils with different turns number, inner diameter, double-layer series connection and double-layer parallel connection are respectively wound by copper skin and hollow copper tube. 3. LCR-819 bridges and transformers are used to measure the resistance, inductance and quality of the coils when they are empty and when they are placed in copper and aluminum alloys. The electrical efficiency of these coils is compared and analyzed by calculating the measured values. In order to find out a suitable parameter of the double-layer coil, so that the electrical efficiency of copper, aluminum and other alloy materials can reach a reasonable value; 4. The double-layer parallel induction coil is used to connect transformer and induction power to heat the workpiece of copper and aluminum alloy, and the current value of no-load and load is recorded to calculate the actual electric efficiency value, so as to verify the feasibility of the double-layer induction coil in practical application.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM924.01
本文编号：2322942
[Abstract]:Induction heating technology is a kind of heating technology with the highest heating efficiency, the fastest speed and low consumption and environmental protection. It has been widely used in hot processing, heat treatment, welding and smelting of metals. At present, if metal objects are heated quickly or some non-ferrous metals, such as copper and aluminum alloys, can be effectively heated, a strong magnetic field is required from the induction coils, which in the past were basically made of a layer of copper tubes or copper coils. If a strong magnetic field is to be generated, a large current must be added to the coil, which will increase the power consumption of the secondary winding and induction coil of the transformer, and reduce the energy efficiency. In view of the above phenomenon, this paper innovatively proposes to change the traditional single-layer induction coil into a double-layer superposition winding, which can reduce the magnetic loss of the secondary winding. The current of the two induction coils is equal and the inductive coil produces a stronger magnetic field, and the metal placed inside the coil produces a larger eddy current, thus achieving the purpose of rapid heating, increasing production efficiency, and increasing energy efficiency at the same time. It can be widely used in the heating of various metals. The main contents of this thesis are as follows: 1. The model of double helical induction coil is designed, that is, two kinds of models of double layer series and double parallel connection. The coupling equivalent circuit of the two coils to heat the workpiece is used to analyze the key parameters that affect the electric efficiency. 2. According to the designed model, the spiral induction coils with different turns number, inner diameter, double-layer series connection and double-layer parallel connection are respectively wound by copper skin and hollow copper tube. 3. LCR-819 bridges and transformers are used to measure the resistance, inductance and quality of the coils when they are empty and when they are placed in copper and aluminum alloys. The electrical efficiency of these coils is compared and analyzed by calculating the measured values. In order to find out a suitable parameter of the double-layer coil, so that the electrical efficiency of copper, aluminum and other alloy materials can reach a reasonable value; 4. The double-layer parallel induction coil is used to connect transformer and induction power to heat the workpiece of copper and aluminum alloy, and the current value of no-load and load is recorded to calculate the actual electric efficiency value, so as to verify the feasibility of the double-layer induction coil in practical application.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM924.01
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