Electric plug-in insulation door

Product Introduction

Electric plug-in insulation door is an important boiler auxiliary equipment, which is mainly used in the cold and hot air ducts of boilers in thermal power plants where the insulation needs to be turned off, such as the inlet and outlet air ducts of coal mills. Because of its reliable operation, flexible opening and closing and tight sealing, this product is widely used in major power plants in China.

Key Features

Adjustment and isolation sharing: The plug-in type insulation door has the function of adjustment and insulation sharing, flexible adjustment and good insulation performance。

• Working status: The damper switch is flexible and there is no sticking phenomenon during normal operation; After closing, there is no internal leakage or external leakage, the shaft seal is good, and there is no air leakage or air leakage phenomenon.

• Highly automated: With remote, near-distance and manual operation functions, the power distribution system can be connected with DCS to realize automated operation effect.

• Sealing performance: The air leakage rate after closing is less than 0.1%, ensuring efficient isolation.

• Manufacturing process: The manufacturing process of electric and manual plug-in board insulation doors meets the relevant industry standards, easy to operate, short installation period, and can be completed within minor repair period.

• Long service life: After installation, basically no maintenance is required, and it can be installed on the air duct at any angle position.

• Technical parameters

  • Use media: Cold and hot air containing powder.
    

  • Design temperature：≤600℃。

  • Specification Parameters: Moisture PPM, impurity μ m, total power KW, weight Kg.

  Introduction to Structure

  Plug-in type electric insulation door is mainly composed of door frame, door seat, door panel, sealing device, opening and closing mechanism, locking mechanism, electric device and other parts. The door frame, door seat and door panel all adopt cavity structure, and the whole heat treatment is finished and shaped to ensure that the equipment has no thermal deformation. The special sealing device ensures no internal leakage at the front and rear of the door panel and no external leakage at the journal, thus achieving a 100% seal in the true sense of the word.

  Opening, closing and locking mechanism

  The opening and closing drive mechanism and the locking mechanism of the plug-in board are designed separately. When the air duct is shut off, the opening and closing electric device drives the plug-in plate to make a closing movement to shut off the air duct; Then, the locking electric device is operated to drive the locking cam mechanism to operate to lock the insertion plate and isolate the flow of the medium in the air duct. When the air duct is opened, the sequence of actions is reversed.

  Sealing performance

  An annular closed sealing packing strip is installed on the surface of the plug board, and the height can be slightly adjusted according to the uneven contact gap of the sealing surface when the plug board is locked, until the seal is tight and there is no leakage. There is no internal leakage after the insert plate of the insulation door is closed, and the cam mechanism is designed to lock the insert plate to achieve zero leakage after the insulation door is closed.

  Mode of operation

  The electric insulation door is equipped with mechatronic electric device, and DCS is equipped with electrical interlock. The isolation door can be operated on the spot or remote operation control.

  Application Scenario

  Electric plug-in type insulation door is suitable for the occasion where the cold and hot air duct or flue of the boiler needs to be shut off and insulated, such as the coal mill inlet air duct, which is used to block the hot air entering the coal mill. This product is widely used in flue gas treatment systems of various chemical, steel, paper and other factories, as well as flue gas treatment systems of coal-fired, gas-fired and oil-fired power plants.

  Importance of environmental protection

  As an efficient and environmentally friendly flue gas treatment equipment, the electric plug-in insulation door plays an important role in the field of environmental protection. It can not only effectively reduce the harm of flue gas to the environment and human health, but also improve the energy utilization efficiency and help to achieve the goal of energy conservation and emission reduction.

  Scope of supply

  The supply scope of electric plug-in insulation doors includes insulation door bodies, drives and other accessories. Detailed operating parameters are required at the time of ordering to ensure that the product can meet specific needs.

  To sum up, electric plug-in insulation door has become an indispensable and important auxiliary equipment in boiler system of thermal power plant with its excellent performance and application scenarios.