西门子has successfully 3D printed and engine tested a complex combustion component for its aeroderivative gas turbine, the SGT-A05. The dry low emission (DLE) pre-mixer, also known as a burner chamber or flame holder, was produced using Siemens’ printable nickel-based superalloys.
由于发动机测试，3D打印的DLE预算机证明了一氧化碳（CO）排放量显着降低的潜力。
“This is another excellent example of how additive manufacturing is revolutionizing our industry, delivering measurable benefits and real value to our customers, particularly as they look to further reduce emissions to meet environmental targets,” said Vladimir Navrotsky, Chief Technology Officer for Siemens Power Generation Services, Distributed Generation.
发电发动机的设计自由
在西门子’ AM Center of Competence在瑞典Finspang,半夜预混减少CO emissions through advanced lean burn combustion technology, eliminating the need for water injection – a cooling process using a water spray which can cause corrosion or pre-ignition within an engine.
The DLE pre-mixer was manufactured in seven months, which, according to Siemens, is a significantly shorter production time-frame for a complex component that traditionally involves 20 parts and casting and assembly methods. With additive manufacturing, the DLE pre-mixer required only two parts and its lead time was reduced by an estimated 70%.
With tight tolerances and functionality in high load and high-temperature environments, the DLE pre-mixer successfully performed fuel transitions, CO emissions reductions were realized, and full power was achieved with no measurable combustion dynamics or noise.
3D打印DLE预算器还改善了组件的几何形状，从而可以更好地使用燃油空气。Navrotsky补充说，“我们使用AM的成就为在设计，制造和维护发电组件的设计，制造和维护方面铺平了道路。”
雷电竞充值高级发动机的增材制造集成
根据西门子的说法，超过120个发动机正在成功利用DLE技术来减少CO排放。去年西门子的材料解决方案收到了2017 3D印刷行业年度申请奖for its superalloy gas turbine blades. The添加剂制成的燃气轮机叶片reduced lead times and are used within the Siemens SGT-400 gas turbine.
这个行业里程碑是西门子的众多里程碑之一。在一个recent interviewwith西门子工业蒸汽轮机服务产品经理Armin Truebel，Truebel告诉3D印刷行业更多有关西门子的3D印刷的油密封环已成为工业蒸汽轮机中的第一个金属3D印刷零件。
“雷电竞充值增材制造提供了一定程度的设计自由，使我们能够实施否则无法实现的设计功能。”
“For us, it is important that, with the implementation of new design features, we can achieve better performance in manufacturing and operation through additive manufacturing.”
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Featured image shows the 3D printed DLE pre-mixer. Photo via Siemens.
