isolation damper

Custom Designs Isolation Damper

Product description

Isolation Dampers are an essential part of any ventilation system where possible air contamination exists.

Dampers can be manufactured in butterfly (circular) format or as square single or multi leaf dampers to suit any ducting set up.

Our stock butterfly dampers range in size from 100mm to 500mm diameter and are manufactured in powder coated mild or stainless steel, each unit is individually pressure tested and certified.

In addition to standard designs, many special requirements may be satisfied through custom design. Our engineering and manufacturing personnel have comprehensive experience in the production of equipment and filters for containment filtration systems, and will assist you in designing and specifying a configuration that exactly meets your requirements.

Construction

Quality Control

All Air Filtration isolation dampers are manufactured and tested under strict quality controlled conditions in accordance with our BS ENISO 9001:2008 accreditation.Each damper will be individually factory tested and allocated with a unique serial number for future traceability.Alternative sizes, specifications and materials of construction are available; please contact our Sales office to discuss.your specific requirements

electric or pneumatic Desulfurization baffle door Anti-corrosion material

Product description

Overview of desulfurization baffle door products

Desulfurization double louver damper baffle the introduction of foreign advanced technology production, the desulfurization absorption tower damper used in flue gas desulfurization system on the import and export or bypass flue, or used for flue gas denitration and flue gas dust removal system, the damper usually adopts the louver double panel structure, shut off when the double pass into the sealing between baffle, the effect of isolation shut off the gas.

Desulfurization baffle door performance characteristics

1. A single shaft is used to drive the double-louver baffle structure, and a sealing chamber is designed in the middle of the double-layer blades to import sealed air, which is higher than the flue gas pressure of 500Pa, into the baffle to form a sealed air isolation layer between the double-layer baffles and block the passage of smoke flow.

2. The opening and closing time of the damper is less than 60S (it can be selected according to user requirements).

3. The external design is provided with a linkage mechanism to make several blades open or close synchronously.

4. Double louver baffle door design structure is reasonable, blade rigidity is good, stable and reliable operation, louver baffle blade seal type: elastic seal and gas seal.

5. The double baffle is designed and installed with sealed air inlet valve. After entering the sealed air, the sealing efficiency of the baffle door is 100%.

6. Driving mode: pneumatic or electric.

7.The driving device is usually connected with the damper.

8.The electric device adopts mechatronics, has torque protection and limit device, and can be operated remotely. The electric device also has hand and electric switching functions for installation, debugging and maintenance.

9. Connection mode of damper and pipeline: flange seal welding connection or flange bolt connection.

10. The sealed fan and electric heater of the sealed air system can be provided by us in complete sets after selection.

Technical parameters of desulfurization baffle door

1. Flue section: D (width) ×W (height) ×L (thickness);

2. Applicable medium: cold and hot flue gas;

3. Design temperature resistance: ≤300℃;

4. Design pressure: ±8500Pa;

5. Internal and external leakage rate of flue gas: "0"

6. Driving mode: electric or pneumatic

7. Power and control requirements: user selected.

Scope of supply of desulfurization baffle door

Including damper body, sealed inlet valve, driving device (electric or pneumatic device) and other accessories, sealed fan and electric heater can be supplied in complete sets.

Instructions for ordering desulfurization baffle doors

1. Provide flue interface size and installation location of pipeline (horizontal or vertical pipeline);

2. Smoke parameters;

3. Opening and closing time requirements;

4. Connection: flange plane butt welding connection or flange bolt connection;

5. Anti-corrosion material requirements (nickel-based alloy or acid-resistant stainless steel);

6. Operation mode: electric or pneumatic (brand requirements of driving device);

7. Use and position of the damper in pipelines;

8. Before ordering, the supplier shall provide the general installation drawing to the buyer for confirmation.

desulphurization baffle door description

1. The damper is easy to be corroded due to sulfur dioxide contained in the air duct, so it is designed and manufactured with Q235 outsourcing 316L material, which has the characteristics of temperature resistance, corrosion resistance and long service life.

2. In order to prevent the damper door plate from deforming at high temperature, reinforcing bars are arranged between the double-layer plates. The thickness of the single-layer plate is 5mm, and the total thickness of the damper is 600mm.Damper shaft head, bearing bush, bearing sleeve and shaft are made of different materials that are resistant to high temperature, abrasion and corrosion.

3. The electric device is connected to the damper shaft with no clearance, and the air leakage rate after closing is less than 0.1%.

4. There is a multi-function limit device on the electric device, and the switch is in place accurately.

5. The distribution cabinet is equipped with DCS interface to achieve automatic operation effect.

6, with common adjustment, isolation, flexible adjustment, isolation performance is good.

7, flexible switch, no jam phenomenon, no internal leakage, leakage phenomenon, good shaft seal.

8. High degree of full automation, with remote, close range and manual operation functions.

9. The production process conforms to relevant industry standards.

Customized isolation door Double plug plate valve single plug plate door plug plate type zero leakage

Product description

FDGM electric cold and hot air isolation door is a new product developed on the basis of FQMM electric cold and hot air isolation door.Isolation door is an important auxiliary equipment of boiler, installed in thermal power plant boiler cold, hot air channel need to shut off the occasion, such as: coal mill inlet air duct.The product works reliably, opens and closes nimbly, the seal is tight, has fundamentally solved the previous isolation door to close not strictly, the closing time is too long the shortcoming, greatly facilitated the equipment to switch over and to stop service inspection repair, at present has been widely used in each big power plant in the country.

Classification

1. According to performance, it can be divided into round shut-off door, round regulating door, square shut-off door and square regulating door.

2. The driving method is cylinder drive

3. According to the manufacturing process, it can be divided into single-layer sliding door and double sliding door.

4, according to the material can be divided into cast iron round damper, carbon steel round damper, stainless steel round damper and rare earth wear-resistant round damper.

Features

1. The installation and use of horizontal, vertical, inclined and vertical positions can be carried out according to the user's site conditions.

2. The door opening, closing and locking adopt the design of interlock, which is convenient for centralized control of computer. In order to facilitate maintenance and special needs, it can also be operated manually on site.

3. Overall heat treatment of the equipment, no deformation under large temperature difference, using novel sealing materials, good sealing performance, abrasion resistance.

4. Optimize the design, so that the thermal isolation door in the use of the process to reduce the rail ash phenomenon, reduce the failure rate, reduce the maintenance cost and maintenance personnel's labor intensity.

Techinal parameters

1. Model: A (length) * B (width) * H (height)

Note: A * B can be a variety of air ducts such as rectangles and circles, which are determined by the user. H damper thickness is generally 560mm.

2. Medium: cold and hot air.

3. Design temperature: ≤400 ℃.

4. Withstand pressure: ≤30Kpa.

5. The technical parameters of this product can be customized according to the special requirements of users.

Flue Gas Desulphurizing Baffle Damper

Product description

Flue gas desulfurization double louver damper baffle the introduction of foreign advanced technology production, the desulfurization absorption tower damper used in flue gas desulfurization system on the import and export or bypass flue, or used for flue gas denitration and flue gas dust removal system, the damper usually adopts the louver double panel structure, shut off when the double pass into the sealing between baffle, the effect of isolation shut off the gas.

1. This damper is easy to corrode due to sulfur dioxide contained in the air duct. It is designed and made with Q235 outsourcing 316L material, which has features of temperature resistance, corrosion resistance and long service life.

2. In order to make the damper door plate hard to be deformed at high temperature, there are reinforcing bars between the double-layer plates. The thickness of the single-layer plate is 5mm, and the total thickness of the damper is 600mm. The wind door shaft head, axle bush, axle sleeve and shaft are made of several kinds of high temperature, wear-resisting and corrosion-resistant materials respectively.

3. The electric device is connected with the valve shaft, without clearance, and the air leakage rate after closing is less than 0.1%.

4. The electric device is equipped with a limit multi-function device, and the switch is in place accurately.

5. The distribution cabinet is equipped with DCS interface to achieve automatic operation effect.

6. With adjustment, isolation and sharing, flexible adjustment and good isolation performance.

7. Flexible switch, no jam phenomenon, no internal leakage, external leakage phenomenon, good shaft sealing.

8. High degree of full automation, with remote, close and manual operation functions.

Technical parameters

1. Flue section: D (width) * W (height) * L (thickness);

2. Applicable medium: cold and hot flue gas;

3, the design of heat-resistant: 300 ℃ or less;

4. Design pressure:

5. Internal and external leakage rate of flue gas: "0"

6. Drive mode: electric or pneumatic

7. Power supply and control requirements: user selection.

Advantages

1. Fewer blades, load-bearing parts and moving parts. Baffle door has anti-torsion performance, adopts rigid design and can be connected flexibly.

2. Blade edge length is greatly reduced (about 50%), and adjustable sealing device is adopted to make it have better sealing performance and achieve zero leakage.

3. The sealing part has no friction load, so it can be better sealed for a long time.

4. Because baffle door adopts streamline design, the pressure loss is less.

5. Low noise.

Shut-off baffle door

Product description

Shut-off baffle door is also known as shut-off door, duct baffle door or flue baffle door, often used in power plants or other industries in the smoke pipe, duct to do intercepting medium, the opening and closing Angle of the damper 90℃, it has two functions of fully open and fully closed, so that the system of a pipeline medium all flow or close.

Structure

Shut-off baffle door is mainly composed of frame, blade, seal, spindle, bearing, shaft seal, crank linkage mechanism, actuator (optional part) and other parts.The frame is molded by steel plate, welded or cast, and the blade is molded or cast by steel plate. The streamlined blade section ensures minimal medium pressure loss.

Special elastic sealing structure is provided between blades and blades and between blades and frames to ensure that the sealing rate before and after the blade is closed can reach above 99%, and the sealing rate can reach above 99.5% for special orders.The blade and spindle are connected by special fasteners. After the baffle damper is installed on the pipe, any part can be removed, and it can be easily repaired or replaced in the working state.The shaft neck adopts special sealing structure and special bearing, special sealing structure has good sealing performance, no leakage, high temperature resistance, special bearing has automatic centering and automatic compensation function, can automatically compensate the coaxiality deviation of the front and rear shaft, to ensure the closing baffle damper resistance is small, no jam, flexible rotation.

Special bearing is provided on the crank connecting rod mechanism to ensure low transmission resistance. Double-arm heavy-duty crank connecting rod mechanism is adopted for the giant closing baffle door to ensure that the opening and closing action of the baffle damper is foolproof.Manual, electric or pneumatic actuators can be directly connected to the drive spindle or crank-rod mechanism to form a remote drive, actuators can also be customized by the user.

Technical parameters

1. Working pressure: generally <26000Pa, large specification shut-off damper or otherwise specified as special requirements;

2, operating temperature: generally <350℃, higher than 350℃, otherwise indicated (high temperature damper up to 1100℃);

3. Driving mode: manual, electric and pneumatic;

4. Actuator (optional) : part of 90° Angle travel rotary, switch type;

5. Sealing effect: >99%, otherwise indicated with special requirements (up to 99.5% above sealing effect)

In the form of classification

According to the shape can be divided into square closed baffle door and round closed baffle door;According to the driving mode can be divided into manual shut-off baffle door, electric shut-off baffle door and pneumatic shut-off baffle door;According to the manufacturing process can be divided into casting type shut-off baffle door and welding type shut-off baffle door;According to the material can be divided into cast iron closing baffle door, carbon steel closing baffle door, stainless steel closing baffle door and nickel base alloy closing baffle door.

Flue Gas Desulphurizing Baffle Damper

Product description

Flue gas baffle door is mainly used for flue gas desulfurization system absorption tower inlet, outlet or bypass flue gas flue, or for flue gas denitrification and flue gas dust removal system, damper baffle usually adopts louver type double-layer baffle structure, damper adopts special sealing device, good sealing performance, blowing tube muffler safety valve muffler leakage rate ≤0.1%.The actuator can be operated by electric or pneumatic means. It can be operated near and far. The opening and closing time can be set as required.The electric device adopts mechatronic products. The exhaust muffler has a small hole muffler with torque protection and limit device and can be operated remotely. The electric device also has a manual and electric switching function for installation, debugging and maintenance.The pneumatic device adopts the proximity switch to make the door stop automatically at the position of full open and full closed, and adopts the locking device and reasonable logic circuit to make the locking device open when the damper is opened and the locking device lock when the steam silencer damper is closed, completely ensuring the safe and reliable operation of the pneumatic damper.

Performance characteristics of flue gas baffle door

1.When working normally, switch is flexible, without jam, low resistance.

2.After closing, no internal leakage, external leakage, good sealing, no leakage, air leakage phenomenon.

3.Open and close signal is connected with DCS to achieve online monitoring.

4.Easy operation, short installation cycle, can be completed in minor repair period.

5.Long service life, a basic installation without maintenance.

6.Adopt new hydraulic drive, high stability.

7.High temperature does not deform, do not collect soot.

8.Flange bolt smoke and connection, easy to install and dismantle.

9. The production process conforms to relevant industry standards.

10. Adopt special sealing material and patented technology for sealing, good sealing performance and high abrasion resistance.

Technical parameters

1. Flue section: D (width) * W (height) * L (thickness);

2. Applicable medium: cold and hot flue gas;

3, the design of heat-resistant: 300 ℃ or less;

4. Design pressure:

5. Internal and external leakage rate of flue gas: "0"

6. Drive mode: electric or pneumatic

7. Power supply and control requirements: user selection.

Advantages

1. Fewer blades, load-bearing parts and moving parts. Baffle door has anti-torsion performance, adopts rigid design and can be connected flexibly.

2. Blade edge length is greatly reduced (about 50%), and adjustable sealing device is adopted to make it have better sealing performance and achieve zero leakage.

3. The sealing part has no friction load, so it can be better sealed for a long time.

4. Because baffle door adopts streamline design, the pressure loss is less.

5. Low noise.