Multi-blade dampers can be a perfect substitute for guillotine dampers in applications that need low leakage and low pressure drop. Guillotine dampers are essential for any application needing low leakage isolation because of its capacity to fully retract and isolate a flow under both positive and negative pressure. These dampers are dependable even under difficult circumstances because of their resilient construction techniques and materials that resist corrosion.
What is a Guillotine Dampers?
Guillotine dampers are capable of totally stopping any flow, including corrosive ones like live flue gas. Complete shut-off of these flows permits safe maintenance of fans, electrostatic precipitators, and scrubbers, as well as on-load inspection. Seals and necessary equipment can be accessible and maintained without having to wait for an outage with a guillotine damper.
Understanding the Mechanics of Guillotine Damper
The name "guillotine dampers" comes from the fact that they resemble the French guillotine. The damper\'s blade can fully retract out of the flow, reducing the amount of further pressure drop. The flow is stopped when the blade is released because it completely seals against the frame.
The Purpose of Guillotine Dampers
Guillotine dampers are generally utilized in circumstances where little leakage is crucial but flow modulation is not required. These dampers can function in challenging, corrosive flows since they can be constructed from a range of materials and protective covers.
Isolating and Fully Retracting Capabilities
When a guillotine damper closes off the flow, its blade moves along load bars to give strength and prevent the blade from deflecting. With very little leakage, the sealing mechanism enables the blade to entirely retract or isolate the flow. Guillotine dampers can cut through particulate accumulation and attain a fully closed position even in unclean environments.
Seal Design Innovations
In horizontal installations, guillotine dampers are meticulously crafted to enable complete closure with little leakage. A guillotine damper\'s sealing mechanism is largely determined by the operating conditions and pressures to which the blade will be subjected in the given application. High nickel metal alloys are frequently employed as externally serviced contact seals on damper frames.
Guillotine Dampers Applications
Steel Plants
Cement Plants
Oil & Gas
Petrochemicals
Power Plants
Enviro Systems
Public Utility Plants
When Are Guillotine Dampers Used?
Guillotine dampers are frequently used for isolation in demanding working settings. Because guillotine dampers can function in conditions up to 500°F and a maximum differential pressure of 25 in Wg, they can be used in situations where many other types of dampers could not. Often, guillotine dampers are needed to meet positive isolation criteria with the lowest possible permitted pressure drop.
Sizes and Materials
The materials used to make guillotine dampers might vary depending on the intended use. The damper frame can use structural or manufactured shapes to keep deflection and stresses within predetermined bounds. It is possible to reduce the damper\'s internal corrosion by using stainless steel and other alloys.
Guillotine Dampers from Flexatherm
Guillotine dampers, which are utilized on inlets, outputs, and bypasses, are crucial parts of some baghouse designs. Flexatherm meets the unique requirements of baghouse producers by providing these dampers in parts or fully completed. Flexatherm may provide individual parts, such as Guillotine discs, seats, cylinder supports, shafts, and operators, for integration into the manufacturer\'s ducting for those who do not need a full assembly.
Our Guillotine damper is unique because of its exceptional design features. To ensure a superior seal, we offer a seat ring with a blanchard ground or machined sealing surface. Additionally, our Guillotine disc may accommodate misalignment prior to final seating. Because 316 stainless steel resists corrosion well, it is the material used to make our standard shafts. We can also produce Guillotine dampers, which have two discs attached to the same shaft and can be vacuumed or purged to achieve zero leakage, for bypass applications.
We provide a custom-designed Guillotine damper for use with thermal oxidizers that are used to destroy volatile organic compounds (VOCs). Every Guillotine damper made by Flexatherm has a lockout device that protects users from harm while the baghouse or thermo oxidizer is being maintained. The system is available in both open and closed modes.