LNG Cryogenic Submerged Pump

Product Overview

 

The LNG cryogenic pump consists of two parts: the pump body and the pump tank. The pump body is an immersion-type two-stage centrifugal pump, completely submerged in the pump tank, requiring no seals. All moving parts are cooled and lubricated by the cryogenic liquid. This LNG cryogenic pump is controlled by a frequency converter.
This pump, which utilizes the cryogenic liquid for self-lubrication, makes its structure simple and easy to maintain. Its outstanding features include: first, a frequency conversion design, suitable for use under multiple working conditions such as LNG refueling stations; second, its technical parameters are easy to meet the design parameters of LNG refueling stations. Therefore, it is widely adopted in LNG refueling stations. This submerged pump has advantages such as lifting height, low operating noise, and small temperature rise.
All rotating components are cooled and lubricated by cryogenic liquid, featuring a seal-less design for high reliability.

Key Features & Advantages

 

Advanced technology with stable and reliable operation
Fully submerged, seal-less structure
Cryogenic liquid self-lubrication and cooling
Low noise operation and minimal temperature rise
High head performance for LNG fueling systems
Simple structure and easy maintenance

The LNG cryogenic submerged pump is controlled by a variable frequency drive (VFD), making it suitable for multi-operating conditions in LNG fueling stations.

LNG vehicle fueling stations
LNG storage and transfer systems
Cryogenic liquid handling systems
LNG energy infrastructure projects

The LNG submerged pump can be adapted for other cryogenic liquid applications, such as liquid nitrogen, liquid argon, and liquid oxygen (with oxygen-clean design), subject to material compatibility and safety standards. Different cryogenic media require specific material compatibility, sealing structures, and safety standards. Final configurations are customized according to the actual operating conditions.
The Cryogenic Submerged Pump is an advanced cryogenic liquid transfer solution developed based on proven LNG submerged pump technology.
By optimizing material selection, sealing structure, bearing system, and safety compliance, the pump can be adapted for a wide range of cryogenic liquid applications beyond LNG.

Previously, Chuyun LNG fueling station faced operational bottlenecks due to insufficient power from its original submerged pump. The slow fueling speed not only limited station efficiency but also caused long waiting times for drivers.
To fully address this issue, the station decisively upgraded to a 18.5 kW submerged pump from Baiyan. Manufactured with precision casting technology and equipped with imported ultra-low-temperature bearings, this pump delivers both powerful performance and exceptional operational stability-perfectly meeting the demands of high-efficiency LNG station operations.
The results were immediate and remarkable. Fueling efficiency improved significantly, with the average fueling rate increasing from 40 kg/min to 70 kg/min. Waiting times for vehicles were greatly reduced, enabling a substantial upgrade in overall service quality and customer satisfaction at the station.

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