AY Horizontal centrifugal petrochemical oil pump

AY-type hot oil pump is a high-temperature oil transfer equipment produced by our
company, complying with the GB3215-82 standard and API610 technical requirements.
It is suitable for transporting media such as petroleum and liquefied gas without
solid particles in fields like petroleum refining, chemical industry, and oilfield
gathering and transportation, with a temperature range of -45 to 420°C. Its flow
rate ranges from 6.25 to 500 m³/h, and the head can reach 60 to 300 m. The model
parameters include suction inlet diameter, pump type, and head.

The pump adopts structures such as single-stage single-suction cantilever and two-
stage single-suction cantilever, with a radially split casing design, horizontal
centerline support, and flange interface oriented vertically upward. The shaft seal
supports interchangeable soft packing and mechanical seals. The bearing system
consists of radial ball bearings and thrust ball bearings, utilizing thin oil
lubrication and flexible couplings to optimize maintenance processes. The product
is compatible with the mounting dimensions of Y-type oil pumps, featuring high
standardization of components. It is equipped with three cooling methods—air, fan,
and water cooling—to adapt to different operating conditions. The materials
selected, such as cast steel/iron, enhance environmental adaptability. The
hydraulic flow components feature energy-saving designs, achieving a 2%~5%
efficiency improvement over Y-type pumps.

AY-type thermal oil pump was developed through the modification and redesign of the
original Y-type oil pump series, aiming to meet the needs of modernization and
align with the equipment renewal centered on energy efficiency. Its design
maintains continuity with the old Y-type oil pump in terms of structural
configuration, installation dimensions, and performance parameters, facilitating
the upgrading and retrofitting of existing installations.

This pump type complies with the API 610 standard, with a specific structure (such
as single-stage, double-suction, and double-end supported) classified as the BB
configuration in API 610. The pump casing adopts a radial split design, where the
casing interface is perpendicular to the pump shaft, making it particularly
suitable for conveying high-temperature, high-pressure, flammable, explosive, or
toxic liquids. Unlike conventional single-stage, double-suction clean water pumps
with horizontal inlet and outlet ports, AY-type thermal oil pump features both
suction and discharge flanges oriented vertically upward to accommodate the limited
spatial layout of chemical plants。

The hydraulic flow components of this series of pumps adopt the hydrodynamic model
of high-efficiency and energy-saving pumps, with an average efficiency 5-8% higher
than the old Y-type oil pumps. The bearing housing components have been upgraded,
replacing the original 35, 50, and 60 bearing housings with 45, 55, and 70 bearing
housings respectively, further enhancing operational reliability. The outer surface
of the bearing housing is cast with cooling fins, allowing for three cooling
methods based on the temperature of the transported medium: air cooling (T℃), fan
cooling (T=120℃-260℃), or water cooling (T=260℃-420℃). Among these, fan cooling
is particularly suitable for areas with water shortages or poor water quality.

To facilitate the easy removal of components such as impellers, bearings, and shaft
seals without disassembling the suction or discharge pipelines during maintenance,
the AY-type thermal oil pump incorporates flexible diaphragm or elastic pin-type
extended coupling assemblies. The shaft seal chamber (stuffing box) can be cast
integrally with the pump cover, allowing for the installation of various mechanical
seals including packing seals, balanced types, bellows types, and tandem types.
Additionally, the exterior of the shaft seal chamber features a water-cooled jacket
that is available as an optional accessory

The AY-type thermal oil pump is available in six structural configurations: single-
stage single-suction cantilever, two-stage single-suction cantilever, single-stage
double-suction cantilever, single-stage double-suction dual-bearing, two-stage
double-suction dual-bearing, and two-stage single-suction dual-bearing.

Within the API 610 standard framework, the single-stage double-suction end-bearing
support type belongs to the BB2 pump category。

Minimum Order: 1 sets

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