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Centrifugal cantilevered close-coupled line electric pumps of 1KML type are intended for pumping of service water (except for sea water) in steady-state conditions with рН=6-9,5, containing not more than 0,1% of mechanical impurities by weight with the size of particles not more than 0,2 mm, and also, other liquids similar to water in their density and chemical activity. Temperature of pumped liquid from 263 to 393К (from minus 10 up to 120°С).
The electric pumps are used as rising and circulation pumps in water supply systems of production premises and for heating of production and residential premises.
Electric pumps are related to items of aspect 1 (repairable ones) as per GOST27.003-90.
Electric pumps are not designed for servicing in explosion-and-fire hazard premises.
Electric pump units have been designed with allowance for export delivery in conformity with the requirements of OST 26-06-2011-79, and are fabricated in climatic version U location category 3.1, and climatic version Т location category 2 as per GOST 15150-69.
Electric pump consist of centrifugal overhung close-coupled line pump and flange-mounted electric motor. The casing of the pump is an iron casting, in which the spiral chamber, support point, inlet and outlet nozzles are executed. The casing of the pump is of 'inline' version - the inlet and outlet nozzles are aligned and have identical flanges. Mounting dimensions of the flanges as per GOST 12815-80, version 1.
The casing of the pump is connected to the flange of the electric motor by means of the connecting piece.
Impeller – centrifugal, single-entry, of closed type with space blades is positioned on the shaft of the electric motor and is fixed by the bolt-cone being secured by lock washer against unscrewing. Impeller is relieved from axial forces by radial blades on the supporting disk of the impeller.
The sealing of the shaft - is a stuffing-box seal which is arranged in the connecting piece and fitted on the protective bushing made of stainless steel. It is admitted to use an end-face seal.
Sense of shaft rotation – right-handed (clockwise, if viewed from the drive end) and indicated by arrow arranged on the electric pump case.
|Flow (nomin.), m³/h||45|
|Flow (max.), m³/h||60|
|Pump power input (max.), kW||7|
|Rotation speed, rpm||2900|
|Rotation speed, c˜¹||48.3|
|Pump inlet pressure, kgf/sm², max||3.5|
|Type of current||AC|
|Admissible positive suction head, m, max||4.5|
For example 1KML 80-160a t-U3.1 TU3631-206-05747979-2002 , where:
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