Magnetic pre-tightening positive pressure explosion-proof door

In the thermal power plant pulverizing system, due to the inherent pulverized coal special

Sex, easy to occur explosion phenomenon, seriously affecting the safety of equipment

reliability service. Therefore, it is necessary to install explosion-proof doors in the pulverizing system

Use this device to release the pressure generated from the explosion to protect the device

Or the component is free from damage.

· product presentation

GT- -AVID series self-opening and closed explosion-proof door is a new generation system developed by Lianyungang Huadong Electric Power Equipment Co., Ltd. for many years

Column of automatic explosive discharge products. The device adopts the magnetic automatic opening and closing technology, the starting pressure is accurate, high discharge efficiency, automatic reset after starting, no need to stop, prevent the system secondary deflagration and other characteristics. After the safety engineering research center test, all the indicators fully meet the American NFPA68 / 69 standard. It is the alternative product of the traditional film plate explosion-proof door and the gravity explosion-proof door.

· design feature

1. The appearance adopts the cylindrical structure to ensure the strength of the fixed bracket.

2. The guide adopts the slide structure to ensure the flexibility of the door cover return position.

3. The door cover is made of special ultra-light and high-strength material to ensure high explosion discharge efficiency.

4. The reset spring is displaced out, and does not contact with the door cover with high temperature, to ensure that the spring does not fail.

5. The high temperature explosion-proof door is sealed with stainless steel graphite to ensure the tightness of the explosion-proof door.

· Product characteristics

1. The starting pressure is accurate, and can be adjusted and tested on the test bench and on site.

2. The discharge efficiency is 90% higher, which is 6~10 times that of gravity.

3. Automatic reset, automatic return after the explosion-proof door explodes, no stop, increase the equivalent availability coefficient of the unit.

· Other characteristics

1. Use the special test tools: set the rated action pressure according to the required, and the special test tools can be used to realize the test bench or field test and adjustment.

2. Fire protection net: a fortified fire net can be added. The fire net is composed of high thermal conductivity material, which is used to block or buffer the flame from the container to prevent the flame from causing fire during the explosion and protect the operator from hot air burns.

· going

1. Temperature: -30℃ ~380℃; 2. Working pressure: -10 kPa ~ + 160 kPa

· apply

1. Use: For the explosive dangerous parts of the boiler pulverizing system of thermal power plant, release the pressure caused by the explosion of pulverized coal powder, and protect the safety of people and equipment.

2. Applicable boilers: power plant pulverized coal boiler, fluidized bed boiler.

3. Applicable pulverizing system form: storage type, medium speed straight blowing type.

4. Applicable coal: lignite, bituminous coal, lean coal.

· Installation parts

1. Medium speed straight blowing milling system: hot primary air inlet pipe of coal mill (the compressive strength of pipe parts does not reach 0.35Mpa~0.4Mpa).

2. Warehouse pulverizing system: coal mill import and export pipe, powder discharging machine outlet pipe, coarse, fine powder separator, coal bin, primary bellows, powder discharging machine inlet pipe and other powder containing pipes.

3. Fluidized bed boiler: the coal feeder place.

Magnetic pretension negative pressure explosion-proof door

· product use

In the operation of the thermal power plant unit, when the boiler to supply air

Improper operation of the machine causes the furnace to be in too high induced air pressure

Head down, simultaneously due to a rapid decrease in fuel input or total

Fuel trip (MFT) causes a sharp drop in furnace smoke and pressure

Low, this combination of harsh working conditions will lead to the furnace implosion

(Sucsuction), in the boiler body and the flue in front of the dust collector

From the open and closed negative pressure explosion-proof door, can make the boiler in implexplosion

It can replenish air to the boiler and flue in advance to avoid causing permanent deformation of the furnace and flue explosion.

· product presentation

ZD-FBFX series self-opening and closed negative pressure explosion-proof door is a new generation series of negative pressure protection product developed by Lianyungang Huadong Electric Power Equipment Co., Ltd. for many years. The device adopts magnetic automatic opening and closing technology, the action pressure is accurate, automatic reset after the action, without stopping. It is a new product to protect the boiler body and flue.

· going

1. Pressure range: -10 kPa ~ + 20 kPa.

2. Temperature range: -20℃ ~395℃.

· Installation parts

The boiler body and the front flue of the dust collector are prone to implosion.

· Installation requirements

1. The installation of explosion-proof doors can be installed at any Angle.

2. The minimum installation interval between the two explosion-proof doors is 200mm.