Designed to ventilate tunnels and underground stations. The fan is installed on-site in a tunnel chamber and can be used in single-fan / dual-fan installations.

VOMD-24А FAN

Order

VOMD-24А fan application

The VOMD-24A axial-flow fan is designed to ventilate tunnels and underground stations. The fan is installed on-site in a tunnel chamber and can be used in single-fan / dual-fan installations.

The airflow is reversed by changing the rotation direction of the electric drive motor while simultaneously altering the setting angle of the guide vanes` and straightener blades.

Damper

Fan housing

Manifold with enclosure

Drive motor

Retaining mechanism

Frame

Design and features

The VOMD-24A fan consists of a housing with guide vanes, a straightener and corresponding drives, a rotor, a manifold, a frame, an electric motor, a clutch, or a V-belt transmission.

The fan housing has a horizontal connector, and its both halves are connected by wedges. The rotor bearing supports are bolted to the housing.

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The guide apparatus and the straightener have the same design and differ in the angles of the blades; they are bolted inside the housing.

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Simultaneous rotation of the apparatus blades is performed by an actuator and a drive with a chain gear. Chain transmissions for simultaneous blade rotation are located inside the apparatus housings.

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The blades of the apparatus are rotated by remote and local control of the drives by means of command apparatus.

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Apparatus blades rotate in three positions: direct operation, reversing operation, and chimney valve when the fan stops.

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The fan rotor consists of a shaft with two impellers mounted on it and rotating in two spherical roller bearings.

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Impellers with spring rings are fitted with blades, which allows to smoothly change the performance of the fan.

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The blades are set to the required angle from 10° to 45° through the hatches when the fan is stopped.

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The fan can be equipped with a device for measuring supply and pressure, consisting of pressure receivers, and a set of control and measuring equipment.

TECHNICAL SPECIFICATIONS