Six development trend of the technology of Shaangu LNG compressor:

First, the basic level of technology:

At present, the successful development of Shaangu and centrifugal compressor model applied to 15 series, to meet the 500 ~ 420000m3/h range of flow, most of the basic level from abroad and the development of international cooperation, which belongs to the international first-class level, to provide protection for the high performance of LNG compressor.

At present, the basic level of Shaanxi blower can develop the gas refrigerant compressor cylinder daily processing volume reaches 1 million party. Compared with the traditional double suction double cylinder design, the unit is more compact, the configuration is simplified, the efficiency is improved, the operation range is greatly raised, and the operation cost is greatly reduced.

Two, centrifugal compressor design technology

Shaanxi current centrifugal compressor design program with a single stage design verification test and actual operation performance test data, can accurately simulate and predict the performance of compressor. Designers can flexibly select the basic level to match, to meet the user needs of the compressor performance.

For the expansion refrigeration cycle using LNG compressor, centrifugal compressor casing for horizontal split, the introduction of design of this type of compressor system for 20 years, the production of the compressor is more than 300 sets, have rich design experience.

For the mixed refrigerant compressor and refrigeration cycle LNG cascade refrigeration cycle using LNG compressor, multi cylinder compressor, in order to reduce the refrigerant medium leakage or propane, the introduction of design of this type of compressor system for 15 years, the production of the compressor is more than 150 sets, the technology is very mature.

For the centrifugal compressor with LNG, the Shaanxi has developed a gas-liquid phase change refrigerant calculation software, can accurately calculate the intermediate cooling condensation agent group, the transformation program has been added to the program design of compressor, centrifugal compressor for accurate design of LNG has become one of the indispensable tools.

Three, CFD/FEA/ rotor stability analysis technology

In order to ensure the stable operation of the unit and build a reliable, Shaangu numerical test platform, the platform has the international advanced CFD software of computational fluid dynamics, the strength of the finite element analysis software FEA, the international advanced rotor dynamics vibration bending purchased from international turbine strong enterprise analysis software, analysis software seal leakage rotor stability. At present, Shaanxi make full use of the platform, for each compressor manufactured products are reliability analysis, in order to ensure the reliable operation of the unit.

Four, processing and manufacturing and installation technology

Shaanxi has advanced processing equipment and strength. Have all kinds of processing equipment more than Taiwan, including large, fine, rare, more than 100 sets of equipment, new investment 624 million yuan expansion, many modern advanced equipment, such as five axis CNC machining center, CNC boring and milling machine, Longmen high precision machine tools, heavy blade machining precision CNC horizontal lathe, overspeed tester, vacuum compressor high speed dynamic balance device heavy equipment, workshop, 21000kW experimental platform, to strengthen and enhance the core components of the manufacturing level, fully meet the production needs of LNG compressor.

Five, test technology

Shaanxi has centrifugal compressor test bench position, test rig, semi open and axial flow compressor impeller test bench, TRT test, steam turbine test bench, test bench, product material testing platform and so on, to meet the company to develop new products and general products factory test requirements.

Shaanxi also planning to build a LNG product special closed test platform, currently under construction, is expected to put into use in June. The test platform is fully in line with the requirements of API617 and ASME (PTC-10) standards, the completion of the product will be able to meet the motor, hydraulic coupling products, compressors, such as a full set of equipment, mechanical performance test, performance test requirements. At the same time, it is the first time that the compressor equipment manufacturers can carry out the monitoring and analysis of a complete set of equipment.

Six, complete sets of service technology and life cycle security technology

For the LNG compressor, provides a set of system services, thus including compressor, engine, gearbox, coupling device, equipment, sealing oil system, cooling system and so on are responsible for providing integrated services for Shaanxi, user. At present, the Shaangu manufacturers qualified supplier list of more than 100, and according to the user's evaluation, the annual foreign manufacturers supporting the qualification review, strict security products and services supplier capability is the domestic first-class, improve customer satisfaction.

Shaanxi in our country in 2004, pioneered the development of compressor remote monitoring system, a new generation of product life cycle health protection center was founded in June 2010 after the integration of industrial service centers, to the rotor field dynamic balance distance and fast response, can drive the intelligent maintenance management based on the ability for users to spare parts inventory management, in order to provide the whole life cycle of the user equipment guarantee.