The utility model relates to a supporting structure of the annular pipeline of the gas turbine engine. The support structure of the pipeline is mainly composed of pin, ball head and ball head seat. The structure is simple, the assembly is convenient, the machining difficulty is not easy, and it is easy to be realized in engineering. This type of pipe support structure is fixed on the casing on the pin end, one end is inserted into the ball head, along the radial direction of the casing and the ball head is relatively free sliding, which plays a role of ball joint, to compensate the machining error; annular pipe circumferentially at the supporting structure, the supporting structure of the the pipeline pipeline and ensure mutual restraint, casing centering radial and circumferential / axial positioning. The working process of the engine, the swelling deformation displacement produced inconsistent casing and heat pipe, ensure casing concentric annular pipe and at the same time, through the radial slide freely along the pin offset, so the pipeline from the extra load effect, so as to improve the reliability of the pipeline work.
【技术实现步骤摘要】
燃气涡轮发动机环形管路支撑结构
本技术属于燃气涡轮发动机领域,是一种燃气涡轮发动机环形管路支撑结构。
技术介绍
目前国、内外燃气涡轮发动机环形结构燃油输送管路多采用卡箍和支架组合式连接形式固定在机匣上,其中卡箍夹紧燃油管路,对管路施加全方位的支撑和阻尼作用,约束一路或多路管路无相对位移,通过刚性或弹性支架进行固定支撑,从而造成管路与机匣无相对位移。但工作状态下的燃气涡轮发动机,机匣与管路处于高温高压环境中,由于热膨胀变形不协调,特别是环形管路,将造成其在径向方向上与机匣存在相对位移,使环形管路在径向方向上增加额外的“支撑”或“拉紧”载荷,影响管路使用寿命,同时存在管路破裂漏油的隐患,影响燃气涡轮发动机使用安全。随着燃气涡轮发动机综合性能要求的逐步提高,对于各个部件的性能、寿命、可靠性及经济性等要求都在不断提高,而刚性支架利用管路或卡箍变形及弹性支架利用支架变形补偿机匣与管路相对位移,风险较大,主要体现在两个方面,一是零件变形时应力较大,特别是长时间工作后,存在疲劳屈服现象,可靠性降低,存在断裂风险;二是卡箍、管路等多采用钣金或弯曲成形,加工精度相对较低,装配时存在 ...
【技术保护点】
燃气涡轮发动机环形管路支撑结构,包括销钉、球头及球头座,其特征在于销钉(1)一端与机匣固定,另一端插入球头(2)内,销钉(1)可以沿机匣径向方向与球头(2)相对自由滑动,球头(2)装在球头座(3)内,可自由转动。
【技术特征摘要】
1.燃气涡轮发动机环形管路支撑结构,包括销钉、球头及球头座,其特征在于销钉(1)一端与机匣固定,另一端插入球头(2)内,销钉(1)可以沿机匣径向方向与球头(2)相对自由滑动,球头(2)装在球头座(3)内,可自由转动。2.根据权利要求1所述的燃气涡轮发动机环形管路支撑结构,其特征在于所述销钉(1),销钉直径D1在5~15mm之间,周向布置个数N在3~10根之间,长度H1≤50mm;当H1>50mm时,应当增加其刚性。3.根据权利要求1所述的燃气涡轮发动机环形管路支撑结构,其特征在于所述球头(...
【专利技术属性】
技术研发人员:李银怀,吴悠,黎武,徐华胜,郑明新,
申请(专利权)人:中国燃气涡轮研究院,
类型:新型
国别省市:四川,51
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