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Technical characteristics of the smoke exhauster d 20. Radial draft fan D (smoke exhauster). Conditions necessary for the operation of the smoke exhauster D

D-20 draft machines are widely used to work with boilers / boiler units with balanced draft, helping to organize a stable supply (blowing) of air into their furnaces. They are included in the package of steam boilers with a capacity of 1 ... 25 tons of steam per hour and gas-oil boilers with a heat capacity of 0.5 ... 16 Gcal per hour. In addition, their use is practiced in conjunction with technological installations, where they move ordinary air, and with gas-oil boilers for smoke removal.

From a constructive point of view, HP fans are designed for long-term uninterrupted operation in regions with a temperate climate, at external temperatures of -30 ... +40 degrees. VD and D smoke exhausters can be placed indoors or outdoors (with protection from atmospheric precipitation). According to the requirements of state standards, the placement of VD is carried out according to the 2nd category. It is possible to extend their service life if the engines are started only if the temperature regime is observed: the temperature inside the housing should not be below -30 degrees at this moment. Ultimately allowable level the temperature of the moved air flows is +200 degrees.

Centrifugal smoke exhausters D are effectively used to remove smoke from the furnaces of oil and gas boilers or boiler units with ash collecting systems. Unlike HP fans, smoke exhausters D are operated with placement in categories 1-4, their wear resistance and reliability are increased by thickening the walls of the housings. Temperature regime the same: ambient air -30 ... +40, inside the case - up to -30, transported medium - no more than +200 degrees.

The most popular, frequently requested models of draft machines:

  • fans VD 2.5; ID 2.7
  • boiler smoke exhausters D 2.7; D 3.5

Smoke exhausters D-20 are always available in the warehouses of the plant

Draft draft machines of the VD and D type are produced in right and left rotation. With right rotation, the wheel rotates clockwise, if you look at the wheel from the side of the electric motor, with left rotation - counterclockwise.

The snail of the VD and D machines is manufactured with a turning angle from 0° to 270° every 15°, while the ribs of the snail that interfere with the installation are cut.

> radial draft fan D (smoke exhauster)

Radial draft fan D (smoke exhauster)

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In order to buy this position, you must make an application.
Discounts are available for large volumes.

General information

The draft machine (smoke exhausters) is produced with right and left rotation with a cantilevered arrangement of the impeller.
The key components of smoke exhausters are the impeller, running gear, volute, inlet pipe, guide vane, running gear frame.
The impeller of a centrifugal smoke exhauster consists of a hub and an impeller. The impeller is a welded unit consisting of back-curved plates (blades) or forward-curved plates placed between the cover and main discs.

The working element of smoke exhausters consists of a shaft, a connecting sleeve-pin coupling and bearings placed in a one-piece housing with a horizontal split.
The snail (body) of draft smoke exhausters is welded from rolled sheet and profile black steel. In order to create the required rigidity, the walls of the smoke exhauster are reinforced with ribs made of rolled corners and steel strips. The inner surface of the hull (snail) along the generatrix is ​​protected by armor plates, and is replaced as it wears out.

The moving part with a mounted impeller on spiral casings is provided with a removable sector.

Purpose fan smoke exhauster D

Radial smoke exhausters D designed for pickup flue gases from boiler furnaces equipped with an efficient way of organizing ash collection, as well as for extracting flue gases from gas-oil furnaces of boiler units.

Variants of execution fan smoke exhauster D

For a variety of erosive qualities of the transported flue gas, smoke exhausters are produced in two versions:
- basic version of smoke exhausters with anti-abrasive protection of the internal surfaces of the casing and impeller blades
- smoke exhausters without anti-abrasive protection for gas-oil boiler systems,

Conditions necessary for the operation of the smoke exhauster D

Centrifugal smoke exhausters are designed for long-term operation in a building and in an open area in a temperate climate (version Y, placement of the 1st, 2nd, 3rd, 4th category, GOST 15 150-69). It is permissible to start centrifugal smoke exhausters at a temperature in the snail body not lower than minus 30°C. The highest gas temperature at the inlet to draft exhausters should not be higher than + 200°C.
Smoke exhausters D must be installed on the base. The metal structures of fans D must be covered externally with a thermal insulation shell.

Specifications
Overall and connecting dimensions
Aerodynamic parameters
Price for fans

If for some reason you could not find a fan (equipment) or it is not in the catalog, call us and we will help you

Technical characteristics of smoke exhauster D

Technical characteristics of draft machines smoke exhauster D

Smoke exhauster size Power,
kW 		Frequency
rotation,
min-1 		Produc-
validity,
m3/hour 		Complete
pressure,
daPa 		Weight,
kg
Smoke exhauster D-2.7 version 1 1,5 1500 500 300 45
1,5 3000 1000 1200 42
DymososD-3,5 isp 1 3 1500 3700 630 65
5,5 3000 2200 2100 77
DymososD-12 version 1 30 750 26500 1510 1215
55 1000 35500 2430 1325
DymososD-12 version 3 30 750 26500 1510 1555
55 1000 35500 2430 1665
DymososD-13.5 version 3 55 750 45000 1770 1650*
132 1000 60000 3140
DymososD-15,5 isp 3 75 600 50000 1800 2280*
132 750 63000 2850
315 1000 80000 5000
Smoke exhausterD-18 version 3 132 750 103000 3100 3810*
160 750 103000 3100
Smoke exhausterD-20 250 750 122000 3850 4290*

* - Weight without electric motor.

Overall and connecting dimensions of the smoke exhauster D

Scheme of turning angles of the smoke exhauster housing

The volute of the fans smoke exhauster D is manufactured with a turn angle from 0° to 270° every 15°, while the ribs of the volute that interfere with the installation are cut.

Overall and connecting dimensions of draft machines smoke exhauster D - 3.5

Machine size
D D1 D2 H H1 h B b A C
smoke exhauster D-2.5 255 252 280 542 320 185 466 162,5 175 175
smoke exhauster D-2.7 270 252 280 556 315 198 502 175,5 160 189
smoke exhauster D-3.5 360 286 350 587 272 272 658 227,5 253 250
smoke exhauster D-3.5 (3000min-1) 360 286 350 587 272 272 658 227,5 200 250

Machine size
a c l L1 L2 L3 d d1 d2 N
smoke exhauster D-2.5 102,5 102,5 140 138 190 220 12 7 7 8
smoke exhauster D-2.7 85 109 135 145 175 180 12 7 7 6
smoke exhauster D-3.5 140 145 185 222 200 392 18 11 9 8
smoke exhauster D-3.5 (3000min-1) 140 145 185 222 200 392 18 11 9 8


Overall and connecting dimensions smoke exhauster D-12 (1 version)

Overall and connecting dimensions smoke exhauster D-12 (version 3)

Overall and mounting dimensions of machines smoke exhauster D-13.5; smoke exhauster D-15.5 (version 3)

Overall and connecting dimensions of draft machines smoke exhauster D-13.5; smoke exhauster D-15.5

Machine size
A A1 a B b D D1 D2 d C E
smoke exhauster D-13.5 2448 1563 685 2295 820 1350 975 1020 14 790 506
smoke exhauster D-15.5 2474 1544 750 2613 941,5 1550 1100 1175 18 907 578

Machine size
H h L L1 t1 t2 T1 T2 N n1 n2
smoke exhauster D-13.5 2203 1250 616 336 110 118 880 590 26 8 5
smoke exhauster D-15.5 2597

Technical characteristics of draft machines D-20

VD and D fans electric motor Parameters in the working area Weight no more than, kg
Size power, kWt Speed, min -1 Productivity 10 3 x m 3 /hour full pressure,
Pa
VD-20 version 3 DA304-450H-8 315 750 180000 9350 4290*
D-20 DA304-400U-8 250 750 122000 3850 4290*

Appointment of draft machines VD and D

D-20 draft machines are widely used to work with boilers / boiler units with balanced draft, helping to organize a stable supply (blowing) of air into their furnaces. They are included in the package of steam boilers with a capacity of 1 ... 25 tons of steam per hour and gas-oil boilers with a heat capacity of 0.5 ... 16 Gcal per hour. In addition, their use is practiced in conjunction with technological installations, where they move ordinary air, and with gas-oil boilers for smoke removal.

From a constructive point of view, HP fans are designed for long-term uninterrupted operation in regions with a temperate climate, at external temperatures of -30 ... +40 degrees. VD and D smoke exhausters can be placed indoors or outdoors (with protection from atmospheric precipitation). According to the requirements of state standards, the placement of VD is carried out according to the 2nd category. It is possible to extend their service life if the engines are started only if the temperature regime is observed: the temperature inside the housing should not be below -30 degrees at this moment. The maximum allowable temperature level of the moved air flows is +200 degrees.

Centrifugal smoke exhausters D are effectively used to remove smoke from the furnaces of oil and gas boilers or boiler units with ash collecting systems. Unlike HP fans, smoke exhausters D are operated with placement in categories 1-4, their wear resistance and reliability are increased by thickening the walls of the housings. The temperature regime is the same: ambient air -30 ... +40, inside the case - up to -30, transported medium - no more than +200 degrees.

The most popular, frequently requested models of draft machines:

  • fans VD 2.5; ID 2.7
  • boiler smoke exhausters D 2.7; D 3.5

Smoke exhausters D-20 are always available in the warehouses of the plant.

Draft draft machines of the VD and D type are produced in right and left rotation. With right rotation, the wheel rotates clockwise, if you look at the wheel from the side of the electric motor, with left rotation, it rotates counterclockwise.

The snail of the VD and D machines is manufactured with a turning angle from 0° to 270° every 15°, while the ribs of the snail that interfere with the installation are cut.

Please note that this offer is not a public offer. You can find out more on the page

Technical characteristics of smoke exhausters D-20

Series D smoke exhausters

Estimated t
movable
environment, C

 Characteristics of smoke exhausters

Weight not
over, kg
Size el. engine Produc-
validity
Qmin, thousand m³/h 		Produc-
validity
Qmax, thousand m³/hour 		Complete
pressure
Pv min, Pa 		Complete
pressure
Pv max, Pa
D-20 (200 kW 600 rpm) version 3 200 355MLB10 58,0 185,0 2200 2580 5400
D-20 (400 kW 750 rpm) version 3 200 – 50,0 207,0 3400 3950 –

Aerodynamic characteristics of the smoke exhauster D-20

dimensions

smoke exhauster number A, mm D, mm D1, mm F1, mm F2, mm F3, mm F4 mm F5, mm F6 mm H, mm Lmax, mm L, mm L1, mm
D 20 isp 3 1215 1400 1500 1170 750 1260 840 1260 840 622/1048 – 564 446
smoke exhauster number L3, mm S, mm d, mm d1, mm d2, mm f1, mm. f2, mm. h, mm. n, pcs. n1, pcs. n2, pcs. n3, pcs n4, pcs
D 20 isp 3 142,5 940 21 21 40/36 140 140 1410 24 20 6 9 4/8

Description

To use any boiler safely, it must be equipped with equipment that will balance the draft. Such devices are called smoke exhausters.

Smoke exhausters of the D-20 series

Boiler smoke exhausters D-20 can be used for all types of boilers, except for electric ones. Smoke exhausters of this series are capable of transporting gas-air media with temperatures up to +250 degrees.

They not only remove combustion products, but also provide one-way traction. Therefore, this equipment is actively used at thermal power plants, in enterprises of the foundry and metallurgical industries, boiler houses of public and private institutions, in greenhouses and private homes. They are also supplied with metallurgical furnaces.

Execution schemes

Exist two versions, which depend on the tool size. They differ from each other in the way the impeller is attached.

  • Execution 3 (scheme 3): The wheel is mounted on the motor shaft through the bearing unit

  • Execution 5 (diagram 5): The wheel is mounted on the motor shaft through a belt drive

Peculiarities

The boiler smoke exhauster D No. 20 is a radial, one-sided suction fan.

Its structure:

  • the outlet pipe is a volute in the form of a spiral casing, where vortex flows are created;

  • an impeller that creates a vacuum in the cochlea due to rotation;

  • an electric drive with an asynchronous three-phase motor that drives the impeller;

  • welded support for electric drive.

Case type - spiral rotary.

The main feature is that the blades of the smoke exhauster are bent forward to ensure direct draft.

Smoke exhausters D-20 are made as the right, and left rotation. Production of the smoke exhauster in corrosion-resistant execution is possible.

Important! Smoke exhausters D-20 are designed for use in temperate climates.

Payment and delivery

Delivery in Moscow and Moscow region

  • With an order amount of 25,000 ₽, delivery within Moscow and the Moscow region is carried out by our own vehicles free of charge

  • With an order amount up to 25 000 ₽, the cost of delivery is calculated individually

  • Delivery is carried out within 1-3 days from the moment your order is ready.

  • Pickup is carried out from the warehouse: Moscow, Pakgauznoe highway, 6

Delivery across Russia

Delivery to Kazakhstan, Belarus and countries of the customs union

We deliver ventilation equipment to Kazakhstan, Belarus and the countries of the Customs Union. When sending through transport companies, only transportation from Moscow to your city is paid, the cost of transportation is low, because transport companies carry groupage cargo.

  • Free delivery to the TK terminal is carried out regardless of the amount of the order

  • The services of the transport company are paid by the client

  • Upon request, we will select a carrier and calculate the delivery based on price and quality

Hardware warranties

  • Warranty for equipment supplied by our organization 12 to 48 months

Connection

Preparing the fan for operation and operating procedure

1. Mounting

1.1 Installation of the fan must be carried out in accordance with the Rules for the design, installation and safe operation general industrial fans.

1.2 Before mounting the fan, it is necessary to carry out an external inspection. Upon detection of damage, defects resulting from improper transportation and storage, commissioning of fans without the consent of the manufacturer is prohibited. In order to prevent imbalance, it is forbidden to dismantle rotating parts without the consent of the manufacturer.

Connect the electric motor according to the diagram shown on the inside of the cover of the electric motor terminal box, observing all the recommendations of the Electric Motor Operation Manual, as well as the Rules for the Construction and Operation of Electrical Installations and the standard Instructions for labor protection during the operation of electrical installations.

1.3 During installation it is necessary:

  • inspect the fan, air ducts (if any);

  • make sure that the impeller rotates easily and smoothly (without touching and jamming).

    check the reliability of the connections of the conductive cable to the terminals of the terminal box;

2. Start

2.1 Before starting, it is necessary to make sure that there are start-up protection devices (ROM), check that the thermal relay setting matches the rated current of the motor winding.

It is forbidden to use the fan in the absence of start-up protection devices (ROM), or if they do not correspond to the rated current of the motor winding.

2.2 Before start-up, it is necessary to inspect the fan, air ducts (if any), the installation site, make sure that there are no foreign objects inside and notify the personnel about the fan start-up.
2.3 When starting the fan and during its operation, all actions on the air ducts and near the fan itself (inspection, cleaning) must be stopped.
2.4 Close the throttling device (guide apparatus, damper, valve, etc.);

It is forbidden to start the fan that is not connected to the air duct network or with an open throttling device.

2.5 To check the operability of the mounted fan, a test run is performed. Check the direction of rotation by briefly switching on the motor, if necessary change the direction of rotation by switching the phases at the motor terminals.
2.6 Turn on the engine, after reaching the nominal speed, gradually open the throttling device until the design parameters of the fan are reached; measure the current in each winding of the electric motor: the current should not exceed the nominal value indicated on the nameplate (nameplate) of the electric motor or in its passport.

Do not exceed the rated current of the motor windings Inom for the used mains voltage indicated on the rating plate of the motor.

2.7 Check fan operation for an hour.

Shut off the motor immediately if there are unusual knocks and noises, as well as excessive vibration, excessive motor heating, or other signs of abnormal operation. Restart is carried out only after the elimination of the observed problems with the permission of the manufacturer.

In the absence of defects, the fan is switched on to normal operation.

More detailed information about the rules of connection, operation and maintenance fans is indicated in the passport that comes with each device.

D-20 type smoke exhausters - centrifugal, one-sided suction, are installed for exhausting flue gases from furnaces of boiler units with a steam capacity of 4-160 t / h, equipped with efficient ash collection systems.

It is allowed to use smoke exhausters D-20 in technological installations for moving non-aggressive gases with dust content of solid particles up to 2 g/m 3 .

Smoke exhausters D-20 are designed for long-term operation at inlet gas temperatures up to 250°C indoors and outdoors in temperate climates (climatic version U, placement category 1, 2, 3 and 4, GOST 15150-69).

Smoke exhausters D-20 (Fan D-20) are produced for general industrial purposes - from carbon steel of ordinary quality, or from stainless steel.

Smoke exhauster type D-20: Design, Description

D-20 smoke exhausters (D-20 fan) for a copper make the right and left rotation. Clockwise rotation of the impeller is considered right when viewed from the motor side.

All single suction smoke exhausters are made with a cantilevered impeller. Depending on the number of the smoke exhauster with detachable or one-piece housings.

By their design, D-20 smoke exhausters are identical with VD fans and differ in the presence of an armor plate along the generatrix of the fan volute and linings at the impeller blades.

Single suction smoke exhausters D-20 can be installed according to one of the installation schemes.

Fans are driven by electric motors. The connection of the fan with the electric motor is carried out through the bearing assembly by means of an elastic pin-sleeve coupling.

Productivity, pressure, power consumption and efficiency of smoke exhausters in all modes are determined by aerodynamic characteristics.

Technical characteristics of the smoke exhauster D-20

Standard sizes of one-sided suction fans VD, for the complete set of smoke exhausters of type D

The fan factory "Ukrventsystema" produces single-inlet HP fans of the following sizes:

  • Fan D-20
  • Fan D-18
  • Fan D-15.5
  • Fan D-13.5
  • Fan D-12
  • Fan D-10
  • Fan D-8
  • Fan D-6

Hull Position Diagram


The fan volute is manufactured with a turn angle from 0° to 270° every 15°