Manual plug-in insulation door

Product Introduction

Product Overview

Manual plug-in insulation door is an important industrial equipment, which is mainly used to shut off and insulate the cold and hot air ducts or flues of boilers. It combines foreign advanced technology, and uses the linkage of opening and closing electric device and locking electric device to isolate working medium, so as to ensure reliable work, flexible opening and closing and tight seal. The product is widely used in major thermal power plants across the country, especially in the application of coal mill inlet air duct.

Introduction to Structure

Manual plug-in insulation door mainly consists of the following parts:

• Door frames, seats and door panels: All adopt cavity structure, and the whole heat treatment is finished and shaped to ensure that the equipment has no thermal deformation.

• Sealing device: The special sealing device ensures that there is no internal leakage at the front and rear of the door panel and no external leakage at the journal, so as to achieve 100% sealing.

• Opening and closing mechanism and locking mechanism: The opening and closing driving mechanism and the locking mechanism of the plug board are designed separately. When the air duct is closed, the opening and closing electric device drives the plug board to make a closing movement, and then the locking electric device drives the locking cam mechanism to lock the plug board.

• Electric device: Supporting mechatronic electric device, DCS set electrical interlock, can realize on-site operation or remote operation control.

Technical parameters

• Installation Location: horizontal air duct, vertical air duct, inclined air duct.

• circulating medium: Cold and hot air.

• Design withstand voltage: 0.35 MPa.

• Design Temperature Resistance：≤400℃。

• power supply: AC three-phase three-wire 380V/50HZ or specified by the user.
  

Scope of supply

Includes an insulation door body, a drive and other accessories.

Requirements for Ordering

Operating parameters, including interface size, working medium, medium flow direction, maximum working pressure, maximum working temperature, pipeline direction, door panel opening direction, required opening and closing speed, installation position and connection mode with pipeline, shall be proposed when ordering.

Key Features

• Reliable work: Ensure that there is no internal leakage or external leakage phenomenon.

• Flexible opening and closing: The damper switch is flexible and there is no sticking phenomenon.

• High degree of full automation: With remote, close range and manual operation functions.

• tightly sealed: The air leakage rate after closing is less than 0.1%.

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

• Application Scenario

Manual plug-in type insulation doors are widely used in boiler systems of thermal power plants, especially in the application of coal mill inlet and outlet air ducts. It not only solves the problem that the traditional isolation door is not closed tightly, but also greatly facilitates the switching and shutdown of equipment for maintenance.

In summary, manual plug-in insulation door has become an important auxiliary equipment in boiler system of thermal power plant due to its excellent performance and high reliability.