Speck pumpen BADU Block Series, Инструкция по установке и эксплуатации

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5.4 Piping
5.4.1 Connecting the piping
DANGER
Excessive loads acting on the pump nozzles
Danger to life from leakage of hot, toxic, corrosive or flammable fluids!
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Do not use the pump as an anchorage point for the piping.
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Anchor the pipelines in close proximity to the pump and connect them without
transmitting any stresses or strains.
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Take appropriate measures to compensate thermal expansion of the piping.
CAUTION
Incorrect earthing during welding work on the piping
Destruction of rolling element bearings (pitting effect)!
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Never earth the electric welding equipment on the pump.
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Prevent current flowing through the rolling element bearings.
NOTE
It is recommended to install check and shut-off elements in the system, depending
on the type of plant and pump. However, such elements must not obstruct proper
drainage or hinder disassembly of the pump.
✓
The suction lift line has been laid with a rising slope, the suction head line with
a downward slope towards the pump.
✓
A flow stabilisation section having a length equivalent to at least twice the
inside diameter of the suction flange has been provided upstream of the
suction flange.
✓
The nominal diameters of the pipelines are equal to or greater than the
nominal diameters of the pump nozzles.
To prevent friction losses in the piping as much as possible, do not exceed the
maximum flow velocities of 1.5 m/s in the suction/inlet lines and 2.5 m/s in the
discharge lines.
✓
Adapters to larger nominal diameters are designed with a diffuser angle of
approx. 8° to avoid excessive pressure losses.
✓
The pipelines have been anchored in close proximity to the pump and
connected without transmitting any stresses or strains.
1. Thoroughly clean, flush and blow through all vessels, pipelines and connections
(especially of new installations).
2. Before installing the pump in the piping, remove the flange covers on the
suction and discharge nozzles of the pump.
3. Check that the inside of the pump is free from any foreign objects. Remove any
foreign objects.
4. Connect the pump nozzles to the piping.
CAUTION
Aggressive flushing and pickling agents
Damage to the pump!
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Match the cleaning operation mode and duration for flushing and pickling
service to the casing and seal materials used.
5.4.2 Permissible forces and moments at the pump nozzles
No piping-induced forces and moments (from warped pipelines or thermal
expansion, for example) must act on the pump.
5 Installation at Site
BADU ® Block 19 of 52