概述
Compressing nitrogen, biogas, hydrogen-rich streams or refrigerants is a different engineering problem from compressing air. Sealing, materials, safety classification and control all change with the gas.
We supply oil-injected and oil-free screw packages engineered around a specific gas composition, with the sealing arrangement, materials and instrumentation chosen for that duty and documented accordingly.
主要优势
Gas-specific engineering
Materials, seals and clearances selected for your gas composition rather than adapted from an air machine.
Sealing to suit the risk
Double mechanical seals with buffer gas where leakage cannot be tolerated.
Hazardous area versions
ATEX and IECEx classified packages available.
Complete package
Skid, cooler, separator, instrumentation and control supplied and tested as one unit.
机器是怎么造的
与空压机相同的螺杆原理，但它是为某一种特定气体而造的，不是为空气。这会改变材料、密封件、润滑剂，往往还有整套密封包容方案。
喷油机型适合能容忍油、并且油可以回收的气体。无油机型用在气体必须保持不受污染的场合，或者用在那些会让油变质的气体上。
在工艺气体上，密封才是工程难题。在不允许泄漏的场合，轴封方案要和压缩本身一样认真地去定规格。
- 为一种指定气体而造，不是为空气
- 按工况选择喷油或无油
- 按该气体选定材料
- 轴封按泄漏要求定规格
- 滑阀调节或变频调节
- 橇装供货，仪表齐全
- 按应用提供相应认证
- 出厂前完成性能测试
控制器做的事
气量调节跟着工艺走。制冷工况常用滑阀，而在很宽的范围内变频通常更高效；您这一种适合哪个，我们会说清楚。
气体温度、压力和密封状态都受到监测，因为在工艺气体上，密封出问题是安全问题，而不是维护问题。
与工厂系统的联锁是设计进去的，不是事后加上的。当上游或下游工艺出现异常时，压缩机必须做出正确的动作。
- 滑阀调节或变频调节
- 监测气体温度与压力
- 监测密封状态并报警
- 与工厂系统的联锁已做进设计
- 完整的趋势记录与故障历史
- 全程采用无源触点
- 标配远程监控
- 配备紧急停车方案
配件与服务
密封件、轴承，以及有润滑剂时的润滑剂，更换周期由该气体决定，而不是照一条通用规则。
工艺气体工况用的零件，与空气机的零件并不通用，哪怕编号看上去差不多。我们按序列号和气体一起报价。
这些机器的作业由既懂压缩机、也受过该气体培训的工程师完成，记录也照此保存。
- 周期由气体决定，不照通用规则
- 密封件与材料按工况专门选定
- 按序列号与气体一起报价
- 工程师受过该应用的专门培训
- 按受监管工艺的要求保存记录
- 调试时商定现场备件
- 大修围绕您的停机安排
- 服务方案下固定价格
常见问题
How is a process screw compressor different?
It is built for a specified gas rather than air, different materials, seals and often a closed casing so nothing leaks to atmosphere.
Which gases can it handle?
Nitrogen, hydrogen, natural gas, refrigerants, biogas and many others. Composition, moisture and any corrosive component all change the specification.
Oil-injected or oil-free?
Oil-injected where the gas tolerates it and the oil can be recovered. Oil-free where the gas must stay uncontaminated or would degrade the oil.
How is leakage prevented?
By the shaft seal arrangement: mechanical, dry gas or double seals with a buffer. The choice depends on the gas and the consequence of a leak.
Can it handle wet or dirty gas?
Better than most machine types, within limits. Screw compressors tolerate some liquid carry-over that would damage a reciprocating machine.
What about explosive atmospheres?
ATEX-compliant configurations are available. We specify to the zone and provide the documentation your safety case requires.
How is capacity controlled?
Slide valve or variable speed. Slide valve is common on refrigeration duty. Variable speed is usually more efficient across a wide range.
What monitoring is needed?
Gas temperature, seal condition, vibration and oil quality as a minimum. Process gas machines justify condition monitoring far more readily than air machines.
Who does the maintenance?
Trained technicians only, with gas-handling procedures. This is not the machine to hand to a general fitter with a service kit.
What do you need to quote?
Gas composition, flow, inlet and outlet pressure, temperature, and the area classification. From those six we can specify properly.
相关产品
不确定该选哪个型号？
把您的用气量、工作压力和运行小时数发给我们。我们的工程师会完成选型并给出书面建议，不收费，也不构成任何义务。