行业组件数据 · 2026

密封系统

High-pressure sealing system for centrifugal compressors in ammonia synthesis loops

技术定义与适配语境
典型 密封系统 会按材料、尺寸公差、适配关系和失效风险在 化学制造 中评估。

A specialized sealing system designed to prevent gas leakage in high-pressure centrifugal compressors used within ammonia synthesis loops, operating under extreme pressures (typically 150-300 bar) and temperatures (150-300°C) while handling corrosive ammonia-hydrogen-nitrogen mixtures. The system maintains pressure differentials between process gas and atmosphere/lube oil systems.

组件规格

定义
A specialized sealing system designed to prevent gas leakage in high-pressure centrifugal compressors used within ammonia synthesis loops, operating under extreme pressures (typically 150-300 bar) and temperatures (150-300°C) while handling corrosive ammonia-hydrogen-nitrogen mixtures. The system maintains pressure differentials between process gas and atmosphere/lube oil systems.
工作原理
Utilizes multiple sealing technologies including dry gas seals (primary), labyrinth seals (secondary), and buffer gas systems. Dry gas seals operate on non-contacting face technology where a micro-thin gas film (typically nitrogen or process gas) creates separation between rotating and stationary faces. Buffer gas systems maintain pressure differentials to prevent process gas contamination of lube oil.
材料
Primary seal faces: Silicon carbide or tungsten carbide with diamond-like carbon coating. Secondary seals: Perfluoroelastomer (FFKM) or high-grade fluoroelastomer (FKM). Housing: ASTM A351 CF8M stainless steel. Springs: Inconel 718. O-rings: FFKM or Kalrez.
Speed
Up to 15,000 rpm
Leakage Rate
< 0.5 Nm³/h
Shaft Diameter
100-300 mm
Pressure Rating
Up to 350 bar
Temperature Range
-40°C to 350°C
Buffer Gas Pressure
1.5-2.0 bar above process pressure
标准
ISO 10438API 617DIN EN 12560

行业分类与别名

密封系统 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Buffer gas supply interruption->Process gas leaks into bearing housing->Dual redundant buffer gas systems with pressure monitoring and automatic shutdown
Solid particle ingress->Seal face scoring and increased leakage->Install 3-micron filtration systems and regular gas quality monitoring

工业生态与工程逻辑

0
Buffer gas supply failure
1
Seal face contamination
2
Thermal shock during startups
3
Corrosion from ammonia-moisture mixtures
4
High-speed rotational instability

合规与检测

tolerance
Face flatness within 0.6 microns, surface finish Ra < 0.05 microns
test method
Helium leak testing per ISO 10438, pressure decay testing, dynamic performance testing at operating conditions

制造该组件的工厂

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制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

Why are dry gas seals preferred over oil seals in ammonia compressors?

Dry gas seals eliminate oil contamination risks in ammonia process, reduce maintenance, handle higher pressures, and provide lower leakage rates compared to traditional oil seals.

What buffer gas is typically used in ammonia compressor seals?

Nitrogen is the standard buffer gas as it's inert, prevents ammonia decomposition, and maintains proper pressure differentials. Some systems use processed synthesis gas.

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URN:CNFX:ME:UNIT:SEAL_SYSTEM