ISG vertical pipeline pump

ISG vertical pipeline pump is a pumping machinery that utilizes the centrifugal motion of water. Due to its simple structure, convenient use and maintenance, and high efficiency, it has become a widely used water pump in agriculture.

Characteristics of ISG vertical pipeline pump

1. It is a vertical structure with the same inlet and outlet diameters and located on the same centerline. It can be installed in pipelines like a valve, with a compact and beautiful appearance, small footprint, and low building investment. If a protective cover is added, it can be used outdoors.

2. The impeller is directly installed on the long shaft of the motor, with a short axial dimension and compact structure. The pump and motor bearings are reasonably configured, which can effectively balance the radial and axial loads generated by the pump operation, ensuring smooth operation, low vibration, and low noise of the pump.

3. The shaft seal adopts mechanical seal or a combination of mechanical seals, using imported titanium alloy sealing rings, medium-sized high-temperature resistant mechanical seals, and hard alloy materials for wear-resistant seals, which can effectively extend the service life of mechanical seals.

4. Easy installation and maintenance, no need to disassemble the piping system, just remove the pump coupling nut to extract all rotor components.

5. Pipeline pumps can be used in series or parallel according to the requirements of flow rate and head.

6. ISG type single-stage single suction vertical pipeline centrifugal pumps_Standard pipeline booster pump can be installed vertically and horizontally according to the requirements of pipeline layout.

Installation instructions:

1. Before installation, check if the fasteners of the unit are loose and if there are any foreign objects blocking the flow channel of the pump body to prevent damage to the impeller and pump body during pump operation.

2. The weight of the pipeline should not be added to the water pump during installation to avoid deformation of the pump.

3. The foundation bolts must be tightened during installation to avoid the impact of vibration on pump performance during start-up.

Why is the selection conflict between ISG pipeline pumps and GDL multi-stage pumps called selection conflict? Because there is a significant overlap in the performance parameters between ISG pipeline pumps and GDL multi-stage pumps, the range of head from 30 meters to 150 meters overlaps, and the range of flow rate from 2 cubic meters to 160 cubic meters also overlaps. So sometimes it can be difficult to choose when encountering overlapping areas during selection.

The installation angle of the static guide vanes of the vertical pipeline centrifugal pump is zero. The static guide vanes of the vertical pipeline centrifugal pump have little effect on the inlet airflow, and the airflow will flow radially into the impeller blades. When the installation angle of the static guide vanes of the vertical pipeline centrifugal pump is adjusted to be greater than zero, it can be seen that the airflow will flow into the impeller blades in either direction, resulting in a simultaneous change in both&and%; The change in transformation will inevitably cause a change in flow rate, and the change in theoretical total pressure PT will also cause a change. According to the energy equation, if the pre swirl velocity component "lu" of the airflow is larger and in the same direction as A (i.e., positive pre swirl), the theoretical total pressure PT of the fan will be smaller. Therefore, the performance curve will shift downwards, causing the operating condition point to move towards the low flow area and the flow rate to decrease.

In fact, another factor that cannot be ignored when increasing the installation angle of the static guide vanes of a vertical pipeline centrifugal pump is that the static guide vanes of the vertical pipeline centrifugal pump have a certain throttling effect on the airflow velocity and change its direction, resulting in an increase in local resistance loss and impact loss inside the fan, leading to a decrease.

Due to the advantages of simple structure, small device size, reliable operation, easy maintenance and management, and low initial investment, the static guide vane adjustment of vertical pipeline centrifugal pumps is widely used in centrifugal fans. In addition, when the adjustment amount is small, the energy-saving effect of the static guide vane adjustment of the vertical pipeline centrifugal pump is not worse than that of the variable speed adjustment. However, as the adjustment amount increases, its throttling effect gradually increases and the adjustment efficiency continuously decreases. Based on this characteristic, for centrifugal fans with a large adjustment range, a combined adjustment method of vertical pipeline centrifugal pump static guide vanes and dual speed motors can be used to achieve high adjustment economy throughout the entire adjustment range. Therefore, the centrifugal induced draft fans of large units in thermal power plants have widely adopted this joint adjustment method. The static guide vanes of the vertical pipeline centrifugal pump of axial flow and mixed flow fans are adjusted to meet the performance requirements of the fan when the load changes. Some axial flow and mixed flow (also known as radial acceleration axial flow) fans have adjustable installation angles at the inlet of the vertical pipeline centrifugal pump static guide vanes. This adjustment method, which adjusts the flow rate during operation by changing the installation angle of the static guide vanes of the vertical pipeline centrifugal pump, is called the static guide vane adjustment of the vertical pipeline centrifugal pump.