在能源运输领域——LNG(液化天然气)/LEG(液化乙烯)等液化气船的运营中,安全与效率至关重要。作为船上关键安全系统的组成部分,制氮装置(Nitrogen Generation System)用于产生惰性气体,适用于货舱的惰化和保压,其稳定运行对船舶操作具有重要影响。而为制氮装置提供气源的空气压缩机,需满足特殊工况要求。

面对这一领域的专业要求,柳泰克(Liutech)基于对客户需求的了解和应用经验的积累,成功完成了多项配套项目:为多艘大型LNG船舶提供了功率范围在110-200kW的专用喷油螺杆空压机,性能表现符合设计要求。

应对行业应用需求,满足实际使用条件

柳泰克工程师团队与客户沟通后,明确了船上制氮应用的主要需求:

1.  空间限制:船舶舱室空间有限,要求空压机结构紧凑,集成度高。

2. 运行可靠性要求:船舶长期航行于海上,维护条件有限,要求空压机具备良好的运行稳定性和耐用性。

3. 散热环境要求:机舱内环境温度较高,通风条件有限,要求空压机的冷却系统能够高效散热,保持设备运行温度在允许范围内。

柳泰克的应用解决方案

针对这些需求,柳泰克基于产品平台,进行了针对性开发,尤其在散热方面采用了更适合船舶工况的水冷设计:

需求一:空间有限 → 解决方案:紧凑化设计与布局优化

• 对空压机整机布局进行规划,采用集成设计,合理安排主机、电机、油气桶、水冷却器等部件,减小整机外形尺寸。

• 优化管路设计,使设备结构更为紧凑,适应船上安装空间要求。

需求二:可靠性要求 → 解决方案:系统可靠性设计

• 部件选型:选用适用于工况的材质和零部件,支持主机的长期运行。

• 系统设计:提升电气元件的防护等级,适应环境要求。简化系统结构,提高可维护性。

• 运行监控:配备控制器,监控运行参数,提供状态提示功能。

需求三:散热要求 → 解决方案:高效水冷系统设计

• 针对船舶机舱散热条件有限的特点,柳泰克对空压机冷却器进行了规格调整,增大了散热面积,采用了水冷式冷却方案。

• 通过高效板式换热器设计,利用船上冷却水循环系统进行冷却,大幅提升了散热效率。

• 水冷系统相比风冷方案更适应高温环境,避免了机舱高温空气对冷却效果的影响,确保压缩空气和润滑油温度始终稳定在高效工作范围。

应用情况

这批采用水冷设计的柳泰克空压机组与制氮系统配合使用,运行表现符合设计要求。设备运行平稳,散热效果良好,适应了船舶特殊环境。

客户反馈指出:"柳泰克团队展现了专业能力和合作态度,理解了船上应用的需求,提供了适用的解决方案。空压机采用的水冷设计能够有效应对船舶机舱的高温环境,运行稳定,满足了使用要求。"

该项目的完成,体现了柳泰克在空压机制造领域的产品能力,以及根据用户实际需求提供相应解决方案的服务模式。

Professional Solutions for Deep-Sea Operations: Liutech Provides Dedicated Nitrogen Generation Air Compressor Units for LNG Vessels

In the energy transportation sector—particularly in the operation of liquefied gas carriers such as LNG (liquefied natural gas) and LEG (liquefied ethylene gas)—safety and efficiency are of utmost importance. As a critical part of the vessel’s safety system, the Nitrogen Generation System is used to produce inert gas for tank inerting and pressure maintenance. Its stable operation plays a vital role in overall ship operations. The air compressors supplying gas to the nitrogen generation system must meet specific operational requirements. 

Faced with these professional requirements, Liutech, based on an understanding of customer needs and accumulated application experience, has successfully completed multiple matching projects: providing specialized oil-injected screw air compressors with power ranges between 110-200kW for several large LNG vessels, achieving performance that meets design requirements.

Meeting Industry Application Demands and Actual Usage Conditions

After thorough communication with the customer, Liutech engineering team identified the main requirements for the onboard nitrogen generation application:

1.  Space limitations: The limited space in ship cabins requires a compact and highly integrated air compressor structure.

2.  Operational reliability requirements: Long-term maritime operations with limited maintenance conditions required compressors with high operational stability and durability.

3.  Cooling environment requirements: The high ambient temperature in the engine room and limited ventilation necessitate an efficient cooling system for the air compressor to maintain operating temperatures within permissible limits.

Liutech Application Solutions

To meet these requirements, Liutech carried out targeted development based on its product platform, adopting a water-cooling design especially suited to maritime conditions:

Need One: Limited Space → Solution: Compact Design and Layout Optimization

• Planning the overall layout of the air compressor, adopting an integrated design, and arranging components reasonably such as the main machine, motor, gasoil separator, and water cooler to reduce the overall dimensions.

• Optimizing pipeline design for a more compact structure, meeting the installation space requirements on board.

Need Two: Reliability Requirements → Solution: System Reliability Design

• Component selection: Choosing materials and parts suitable for the operating conditions to support long-term operation of the main engine.

• System design: Enhancing the protection level of electrical components to meet environmental requirements, simplifying system structure to improve maintainability.

• Operation monitoring: Equipped with controllers to monitor operating parameters and provide status indication functions.

Need Three: Cooling Requirements → Solution: Efficient Water Cooling System Design

• Considering the limited heat dissipation conditions in ship engine rooms, Liutech adjusted the specifications of the air compressor cooler, increased the cooling area, and adopted a water-cooled cooling solution.

• Using a high-efficiency plate heat exchanger, utilizing the ship's cooling water circulation system for cooling, greatly improving heat dissipation efficiency.

• Compared to air-cooling solutions, the water-cooling system is better suited to high-temperature environments, avoiding the impact of hot engine room air on cooling performance. This ensures that compressed air and lubricant temperatures remain stable within the optimal operating range.

Application Performance

The Liutech air compressor units with water cooling design, used in conjunction with the nitrogen generation system, showed performance that met design requirements. The equipment ran smoothly, with good cooling effects, adapting to the unique ship environment.

Customer feedback indicated: “The Liutech team demonstrated professional capability and a cooperative attitude, understanding the needs of onboard applications and providing suitable solutions. The water-cooling design of the air compressor effectively addresses the high-temperature environment of the ship's engine room, operating stably and meeting usage requirements.”

The completion of this project highlights Liutech’s expertise in the air compressor manufacturing field, as well as its service model of providing tailored solutions based on actual user requirements.