The soft starter is the most widely used control equipment with the most prominent utility.
The application of soft starters in different fields;industries and equipments.
1. Application of soft starter in urban rainwater sewage pumping station and sewage treatment plant.
2. Soft starters are widely used in clean water pumps in waterworks and booster pumping stations.
3. Application of soft starter in fire pump control. 4. Application of soft starter in various types of deep
well submersible pumps and long shaft pumps.
1. Application of soft starter in urban rainwater sewage pumping station and sewage treatment plant
The drainage basin of the rainwater sewage station is a concentrated area of rainwater, domestic sewage,
and industrial sewage. To ensure that the liquid level of the drainage basin is kept within the allowable range,
the sewage pump group is automatically controlled by detecting the liquid level of the drainage basin to ensure
the normal discharge of sewage.
2. Soft starters are widely used in clean water pumps in waterworks and booster pumping stations
Mainly realize the soft start and soft stop of the high-power water pump motor, focusing on eliminating and
reducing the harm of water hammer. When the liquid in the pipeline system is suddenly accelerated or decelerated
by external force, or changes the flow direction, it will cause water hammer. Water hammer is very harmful, from the
slightest it causes the pipe system to vibrate and emit noise, and the severer causes damage, or even the pump room. Flooded.
3. Application of soft starter in fire pump control
Hydrant pumps and sprinkler pumps are important fire-fighting equipment for industrial and civil building fire-fighting
facilities. Their operational reliability is extremely important. With the construction of large and medium-sized construction
projects, the power and lift of the configured fire hydrant pumps and sprinkler pumps have increased. The reduced-pressure
starting method highlights its shortcomings, especially high-rise buildings with serious water hammer damage, which brings
unsafe factors to equipment operation. At present, soft starting is widely used in the control of fire pumps.
4. Application of soft starter in various types of deep well submersible pumps and long shaft pumps
Generally, deep well submersible pumps have a large lift, and the water hammer phenomenon is obvious during non-soft shutdown,
causing serious damage to the foundation of the pump base, well tray, pumping pipe and pump impeller. Some submersible pumps
(such as high and low pressure water supply modes) frequently start and stop. Long shaft pumps are currently not used much due to
low efficiency, but some companies still use them. This type of pump is started due to severe torque impact, coupled with long pump
shafts, severe wear of shaft sleeves and impellers, and pump failure rates. High and difficult to maintain. The failure of the water pump
is significantly reduced after soft start of this kind of load.
Inverters are widely used. According to the voltage level, they are divided into low-voltage inverters and medium-high-voltage inverters. The purpose and requirements of applications in various industries are different:
1. Steel: rolling mills, roller tables, fans, pumps, cranes, ladle cars, converter tilting, etc.
2. Steel rolling wire: wire drawing machine, winding machine, blower, pump, hoisting machinery, fixed-length shearing, automatic feeding.