NIKKISO Cryogenic Pump
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NIKKISO NIKKISO CRYOGENIC PUMP NIKKISO CO.,LTD.

NIKKISO CRYOGENIC PUMP NIKKISO - Watld' Leading Manufacturer of Specialty Pumps HISTORY OF NIKKISO CRYOGENIC PUMP Nikkiso Co., Ltd. is a Japanese pump manufacturer with five factories, 1400 employees and net sales over $450 million. The company has half century of experience in the centrifugal pump business since 1953 of which after 1982 were specifically with submerged electric motor pumps for cryogenic liquefied gases. Nikkiso began manufacturing cryogenic pumps in 1982 for applications in Japan and Asia. This was expanded in 1987 when they purchased sole and exclusive (but excluding USA....

NIKKISO CRYOGENIC PUMP RELIABILITY AND LONG LIFE OF NIKKISO PUMPS ARE ASSURED BY: Control of Bearing Loads It is well known that lightly loaded bearings have longer lives. To achieve this, Nikkiso pumps include design features that neutralize these loads. Radial Force Balance by Symmetrical Diffuser Geometry Properly proportioned diffuser vanes eliminate radial loads on the bearings thus assuring long bearing life. Radial Force Balance By Eliminating Hydraulic Instability Flow sparation from the diffuser vanes can occur at low flow rates resulting in hydraulic instability (called "rotating...

NIKKISO CRYOGENIC PUMP CONSTRUCTION SUCTION VESSEL MOUNTED ^Suction pot^

NIKKISO CRYOGENIC PUMP REMOVABLE Column ) Accelerometer (optional) J Bail bearing Motor shaft ) Cryogenic submerged moter^ Balance Drum Balances thrust load over entire operating range. Diffuser Smooth transition from Impeller to Diffuser without change in flow pattern. ImpellerJ Inducer Provides stable NPSH characteristic over a wide flow range. Foot valve 5

NIKKISO CRYOGENIC PUMP DESIGN & RELIABILITY FEATURES Balance - the key ta langevity and reCiaiCity Diffuser RADIAL BALANCE Imbalance of radial forces reduces bearing life. NIKKISO CRYOGENIC pumps eliminate both hydraulic and mechanical imbalance. In NIKKISO CRYOGENIC pumps the diffuser is symmetrical with the fluid which exits the impeller being received by the axial diffuser with perfect hydraulic symmetry at all flow conditions. In contrast, conventional pumps depend on an asymmetrical scroll diffuser which has variable radial loads with different flow conditions. In the case of...

NIKKISO CRYOGENIC PUMP CERAMIC SEAL TERMINAL HEADER DOUBLE SAFETY CONSTRUCTION: A key safety feature for submerged motor pumps is the sealing of the electrical connections. The electrical terminal header is designed to withstand high pressure and electrical surges. NIKKISO CRYOGENIC Pumps use a ceramic gas seal terminal and dual header seal which ensures the highest reliability. Liquid side terminal header Intermediate chamber (N2 charged or purged.) Liquid side Atmospheric side terminal header Atmospheric side FEATURES INCLUDE: All seals are either welded or soldered using special welding...

NIKKISO CRYOGENIC PUMP INSTALLATIONOPTIONS REMOVABLE Removable pumps offer the advantage of overhead withdrawal plus replacement without taking the tank out of service. The pump operates at the bottom of the column through which it is installed and removed. The column provides the fluid discharge and electrical connections. The pump is seated on a conical seated foot valve adapter at the bottom of the column. The weight of the pump opens the spring loaded foot valve. When the weight of the pump is removed, the foot valve closes. The additional advantages of this type of installation include...

NIKKISO CRYOGENIC PUMP PUMP SELECTION NIKKISO will select pump components to meet all combinations of flow and pressure conditions. Optimum pump capacities are accomplished by selecting high efficiency impellers for flow rates and selecting the number of stages to meet pressure requirements. Pump Model Dsignations are: MODEL INDICATION: OOOOO LO-A OOO X PUMP DESIGN NO. NUMBER TYPE M OF STAGES R: REMOVABLE P: POT F: FIXED MOTOR WINDING CONSTRUCTION F: FORMED R: RANDOM TYPICAL PERFORMANCE OF NIKKISO-CRYOGENIC PUMPS HEAD(m) 10000 7000 5000 4000 3000 2000 1500 1000 700 500 400 300 200 150 100...

NIKKISO CRYOGENIC PUMP TESTING Nikkiso has the ability to perform cryognie pump testing at either of its two test facilities depeding on the fluid being pumped. The Higashimurayama facility can test with LN2 whereas the Las Vegas facility can perform tests on LN2, LNG, and LPG. Full flow and power tests can be conducted at full or variable speeds and with voltages up to 6,600 volts. Full instrumentation permits performance and NPSH tests to be conducted and pump condition can be determined with vibration and shaft lift monitoring. 11

NIKKISO CO.,LTD. Cryognie Pump Department: 2-16-2, Noguchi-cho, Higashimurayama, Tokyo 189-8520, Japan Tl驩phone: +81-42-392-3548 Facsimile: +81-42-392-3549 Factories: Tokyo, Shizuoka, Kanazawa, Japan International: Germany, China, Singapore NIKKISO CRYO, INC. 4661 Eaker Street, Las Vegas, NV 89031, U.S.A. Tel: +1-702-643-4900 Fax: +1-702-643-0391 LEWA GmbH Nikkiso Cryo Department: Ulmer StraPe 10, 71229 Leonberg, Germany Tel: +49-7152-14-0 Fax: +49-7152-14-1303 Catalog No.2079 March,2011