电加热器说明书

DRK型空气电加热器

DRK Electric Air Heater

使用说明书

Operating

Instruction Manual

江苏国能环保设备有限公司

Jiangsu Guoneng Environment Protection Equipment Co., Ltd.

一、前言Preface

DRK型空气电加热器是我厂近年来研制成功的专门供燃煤发电厂除灰系统使用的新型加热设备，该设备由空气电加热器和控制系统两个部分组成。发热元件采用1Cr18Ni9Ti不锈钢无缝管作保护套管，0Cr27A17MO

高温电阻合金丝、结晶氧化镁粉，

2

经压缩工艺成型，使电加热元件的使用寿命得以保证。控制部分采用先进的数字电路、集成电路触发器、高反压可控硅等组成可调测温、恒温系统，保证了电加热器的正常运行。

DRK electric air heater, the new type heating equipment special for coal-fired power plant ash collection system, is successfully made by our company recent years. This equipment consists of electric air heater and control system. Heating unit adopts 1Cr18Ni9Ti seamless steel tube as the

high protective case. After compression craft formation, 0Cr27A17MO

2 temperature resistance alloy wire and crystal magnesia powder could make sure the life of electric heating element. Control part uses advanced digital circuit, IC trigger and high counter voltage SCR to compose adjustable thermometer and thermostat system, which insure the normal working of heater.

该产品适用于电站空气输送斜槽气化风加热，电除尘器灰斗气化风和贮灰库气化风加热等方面。

This equipment use for power plant air delivery skewed slot gasification wind heating, electric dust collector gasification wind and ash storehouse gasification wind heating. 技术参数 Technical Parameter

1.空气电加热器的规格与参数

Specifications and Parameter of Electric Air Heater

2.控制柜的主要技术指标数据 Main Technical Index Data of Control Box

1).输入电压 Input voltage ：380V ±5%（三相四线three phase four wire

system ）

2).额定功率 Rated capacity ：45KW

3）.额定电流 Rated current ：78A(单相single phase)

4）.控温精度 Control accuracy ：0.5级

5）.控温范围control range ：0～300℃

三、结构与工作原理Structure and operating principle

1.空气电加热器结构 Structure of Electric Air Heater

电加热器是由多支管状电热元件、简体、导流板等几部分组成，管状电热元件是在金属管内放入高温电阻丝，在空隙部分紧密地填入具有良好绝缘性和导热

性能的结晶氧化镁粉，采用管状电热元件做发热体，具有结构先进热效率高，机

械强度好，耐腐、耐磨等特点。筒体内安装了导流隔板能使空气在流通时受热均匀。

The electric air heater consists of multi tubular heating element, drum, flow deflector and etc. Put the high-temperature resistance wire in the metal tube and tightly fill in the void with crystal magnesia powder, which has the high insulating property and high-thermal conductivity. The tubular heating element is a heating unit with the characteristics of advanced structure, high thermal efficiency, high mechanical strength, corrosion-resistant and wear resistance. Flow deflector, installed in the drum, could make the air uniform heated when circulating.

2.控制工作原理 Control principle

数显温度控制柜采用数显温度调节仪，集成电路触发器，大功率可控硅和测温元件组成测量、调节、控制回路，在电加热过程中测温元件将空气电加热器出口温度电信号送至数显温度调节仪进行放大、比较后显示测量温度值，同时输出0～10V电压信号到可控硅触发组件的输入端，控制输出脉冲相位，从而控制可控硅导通角度大小，使控制柜有良好的控制精度和调节特性。利用联锁装置可远距离启动、关闭空气电加热器。

Digital display temperature cabinet uses digital display temperature regulator, IC trigger, high power SCR and temperature element to compose the measuring loop, regulating loop and control loop. Temperature element sends the outlet temperature electrical signal of electric air heater to the digital display temperature regulator, which could indicate temperature value after amplification and comparison. Meanwhile, the digital display temperature regulator outputs the 0～10V voltage signal to incoming end of SCR trigger assembly, in order to control outlet impulse phase. Consequently, making control box being more controllable through control thyristor operating angle,

四、安装与使用 Setup and use

控制柜应安装在干燥通风、便于操作的地方。空气电加热器外壳、控制柜外壳应可靠接地、空气电加热器应水平安装，底座螺母要拧紧使其稳固。

本体与外接管道安装时，应注意进出口方向。