High temperature barrier door
Solution for High Temperature Baffle Wind Door System
Product Overview
High temperature air damper (also known as high-temperature pneumatic damper door, desulfurization flue gas damper door) is the core cutting equipment of the flue gas duct system, designed specifically for high temperature, high dust and corrosive medium working conditions. Through dual dynamic sealing technology and intelligent interlocking control, precise opening and closing of the medium flow channel and zero leakage sealing are achieved, completely solving the energy loss problem caused by high air leakage rate of traditional air doors.
Core technological advantages
1. Shutter type linkage structure
- Using a 90 ° stroke switch type electric actuator to drive the spindle, and synchronously controlling the rotation of multiple blades through a crank connecting rod mechanism
- Parallel flow direction of blade medium: fully open state (flow resistance ≤ 1%)
- Vertical medium flow direction of blades: fully closed state (industry-leading sealing level)
- Action response time<10 seconds, supports DCS remote control
2. Dual stage active sealing system (industry original)
|
Sealing level |
Technical principles |
Improved sealing efficiency |
|
Mechanical hard seal |
Blade edge ultra-thin alloy sealing plate+frame sealing edge |
High temperature deformation compensation, bonding accuracy of 0.1mm |
|
Airtight barrier |
Intelligent interlocking between sealed air valve and actuator |
Sealing pressure>1.5 times the medium pressure |
|
Automatically triggered when closed: high-pressure clean air is injected into the sealed cavity, forming an impenetrable gas barrier with a leakage rate of ≤ 1% (far exceeding the national standard limit of 1.5%) |
3. Design for resistance to extreme working conditions
- Blade structure: double-layer panel+internal reinforcement welded cavity body (resistant to high temperature deformation at 800 ℃)
- Bearing system: UCF self-aligning bearing support, capable of withstanding axial/radial composite loads
- Material Matrix:
- Carbon steel: Conventional high-temperature medium (≤ 550 ℃)
- Nickel based alloy: Corrosion environment such as desulfurization flue gas (life increased by 3 times)
- Compared to ordinary power plant air valves (6mm thin steel plate): creep resistance increased by 400%
Our commitment:
✅ Factory test shows that the air leakage rate is less than 1%
✅ Sealing gasket with 100000 cycles of opening and closing wear<0.05mm
✅ Maintenance free period>24 months
Typical application scenarios
|
Location |
Media Type |
temperature range |
pressure rating |
|
Boiler flue bypass |
ash-laden gas |
300-650℃ |
PN0.6-2.5MPa |
|
Inlet and outlet of desulfurization tower |
Corrosive wet flue gas |
80-180℃ |
PN0.25 |
|
Waste heat power generation system |
High velocity exhaust gas |
400-750℃ |
PN1.0 |
Why choose us?
Precision manufacturing process
- Frame laser cutting+robot welding (flatness ± 0.5mm/m ²)
- Sealing edge plate surface plasma quenching (hardness HRC55-60)
- 100% airtight helium mass spectrometry detection
Intelligent operation and maintenance guarantee
- Built in opening sensor+sealed air pressure monitoring
- Support real-time diagnosis on IoT platforms (warning of sealing failure risks)
Tightly seal every leak
[Lianyungang Huaneng Auxiliary Machinery] High temperature damper - using aerospace grade sealing technology, providing zero leakage system solutions for the fields of power, metallurgy, and chemical industry!
Technical parameter fast track
Maximum diameter: 8m × 8m
Applicable temperature: -40 ℃~800 ℃
Drive mode: electric/pneumatic/hydraulic
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