Vacuum Insulated Cryogenic Pump Sump for LNG Submerged Pumps
Product Overview
The vacuum insulated cryogenic pump sump is a specialized cryogenic pressure vessel designed to provide an optimal operating environment for cryogenic submerged pumps.
The pump pit incorporates several specialized design details to ensure optimal operating conditions for the submerged pump. These innovations enable the pump to operate efficiently throughout its rated service life, ensuring stable output flow and high discharge head. (Several design aspects have been patented for these advancements.)
It adopts high-vacuum multilayer and multi-shield insulation technology, ensuring excellent thermal performance, stable operation, and long service life.
With a compact structure and reliable performance, the pump sump plays a critical role in reducing heat ingress and maintaining the efficiency of LNG submerged pumping systems.
Applications
LNG liquefaction plants
LNG receiving terminals
LNG fueling stations
Cryogenic liquid transfer systems
Why a High-Performance Pump Sump Matters
Cryogenic centrifugal pumps must be equipped with a highly insulated pump sump to ensure stable and efficient operation.
Our patented, self-developed cryogenic pump sump delivers excellent insulation performance at a competitive cost, with performance proven to exceed many imported alternatives.
Key Design Advantages
Enhanced thermal insulation with cold-isolation pump sump cover
Integrated vacuum inlet and outlet piping design
Optimized pressure, vent, and temperature measurement layout
Independent vacuum insulation layer on customized pump sump cover
No frosting during operation, cryogenic liquid evaporation ≤ 30% within 24 hours
Maintenance-friendly design with fast replacement of wear parts
Compatible with ACD pumps (USA) and Cryostar pumps (France)
Stable vertical installation ensuring reliable long-term operation
Technical Specifications
|
Model |
BY-BC/1.92-81 |
|
Vessel Category |
Standard Pump Sump |
|
Working Pressure (Inner Vessel) |
1.6 MPa |
|
Design Pressure (Inner Vessel) |
1.92 MPa |
|
Working Pressure (Outer Shell) |
-0.1 MPa |
|
Design Pressure (Outer Shell) |
-0.1 MPa |
|
Working Temperature (Inner Vessel) |
-162 °C |
|
Design Temperature (Inner Vessel) |
-196 °C |
|
Ambient Design Temperature (Outer Shell) |
50 °C |
|
Total Volume |
81 L (Inner Vessel) / 47 L (Outer Shell) |
|
Inlet Nozzle |
DN80 |
|
Outlet Nozzle |
DN65 |
|
Insulation Type |
High-vacuum multilayer wrapped insulation |
Key Benefits for Customers
Reduced heat ingress and improved pump efficiency
Lower LNG boil-off and energy loss
Easy installation, operation, and maintenance
Compatible with mainstream international pump brands
Cost-effective alternative to imported pump sump systems
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