WZ-6发动机改用天然气的结构方案试验研究

EXPERIMENTAL INVESTIGATION ON MODIFICATION OF THE WZ-6 AEROENGINE TO USE NATURAL GAS AS FUEL

本文介绍了WZ-6发动机燃烧室由烧液体燃料改烧天然气燃料的结构设计方案、部件调试过程和试验结论,以及整机调试和试运转情况。实践证明,WZ-6发动机改烧气体燃料的结构设计方案是成功的。

This paper describes the experimental investigation on modification of the WZ-6 aeroengine into an industrial turbomachine (WZ-6G) which has been run for 1500 hours continuously as a powerplant in oil field. The fuel supply system of the engine has been reconstructed so that the natural gas is introduced through the three tubes radially inserted in the axial diffuser into a stationary jet ring, and therefrom injected into the main combustion zone. The ejection of thenatural gas from three rows of holes on the jet ring is peripherally uniform.Testing shows that the reasonable injection speed of the natural gas is 50 to 80m/s, nonuniformity coefficient of the gas temperature field at the outlet of the combustion chamber is about 0.22, Under the above conditions, the distributionof the temperature field in the combustion chamber meets the essential requirements and provides smooth combustion with the transparent light blue flame. The temperature of the flame tube wall is permissible.The main combustion chamber is actuated and ignited by the torch ignitors with natural gas as fuel.