用于燃气轮机维护的螺栓连接创新解决方案

洛帝牢防松垫圈不是利用摩擦 力， 而是利用机械结构锁紧。
它是由一对有相互咬合的齿面 额垫圈构成。
cam faces
radial te
The proven original wedge-locking solution
久经验证的楔形制锁解决方案
The key is the difference in angles. Since the cam angle ‚α‘ is larger than the thread pitch ‚β‘ a wedge effect is created by the cams, preventing the bolt from rotating loose.
液压联轴器螺栓
Multi-Jackbolt Tensioners
多顶推预紧器
Combination Hydraulic / Multi-Jackbolt Tensioners
液压方式和多顶推预紧器的结合
Introduction
Optimum performance of Gas Turbines is essential towards maintaining running, planned and unplanned outage regimes.
保持燃气轮机的最佳性能是运行维护及计划内和计划外停运需要考虑的重要因素。
All Gas Turbines rely heavily on critical bolting products, methods and procedures to facilitate these needs.
燃气轮机的好坏大都依赖螺栓连接的产品质量、方法以及是否能为以上需求提供便利的程序。
Secure bolting systems are essential not only in ensuring joint integrity, but also in minimising downtime and outage programs.
安全的螺栓连接系统不仅对于确保连接完整性至关重要，同时也是使故障停机和中断减小到最小程度的重要因素
用于燃气轮机维护的螺栓连接创新解决方案
洛帝牢防松垫圈
超级螺栓预紧器 Boltight 液压螺栓预紧器 Expander 膨胀销系统
Topics Wedge Locking Washers
楔形制锁垫圈
Hydraulic Tensioners
液压紧固设备
Hydraulic Coupling Bolts
is not an option
楔形制锁方案 — 万无一失的选择
The Challenge - Bolt exposed to vibration
暴露在振动环境下的螺栓
The Solution 解决方案
The Nord-Lock wedge-lockin technology is designed to secure fasteners in extreme conditions and prevent bolt loosening.
+ Special alloys for very high temperatures
洛帝牢楔形制锁技术致力于在 极端环境下仍然能保持锁紧， 防止松动。
The Nord-Lock original washer 洛帝牢原型垫圈
Nord-Lock washers secure bolted joints with tension instead of friction. The system is comprised of a pair of washers that have cam faces on one side and radial teeth on the opposite side.
NL3-NL130 as standard range for steel washers
NL3ss-NL80ss as standard for stainless steel
washers
碳钢垫圈规格范围：NL3--NL80SS
Withstanding at least the same temperatures as corresponding bolts/nuts of same quality
This wedge locking principle positively locks the fastener in a joint which is subjected to extreme vibration or dynamic loads.
相互咬合的 度 “α‘” 大于 纹的深角“β 这样就有效 阻止了螺丝 松动
Junker Vibration test 震动测试中的验证
Bolt M8 (8.8) with clamp load length 25mm
M8x25mm的螺栓（8.8级）
Regular nut M8 on bolt with Nord-Lock at 70% of yield point Regular nut M8 nut on bolt with extension socket, clamp length 50 mm
Nylon-inserted nut Split ring washer Regular nut M8 on bolt
Load cycles
Clamp load [kN]
Untighten
Products benefits 产品优势
Wide range 规格范围
Wide temperature range 使用温度范围
The following details products and methods which are designed specifically to achieve all of the above. 以下详细介绍了专门用于实现上述目的的产品和方法。
OrigCinliaclkwteodgeed-iltocMkainsgter solutteioxntss-tywlheesn failure