通海阀箱消声器环境试验研究

目的验证通海阀箱消声器的环境适应性。方法分析通海阀箱消声器的结构组成、工作原理、使用环境。综述环境试验的相关标准,并对GJB 150A军用装备实验室环境试验办法中有关水面船舶部分进行剪裁,依据GJB 150A开展倾斜摇摆试验、振动试验、冲击试验,确定上述试验的方法、相关参数,并设计模拟海水环境的工装。结果消声器在施加了上述试验的环境应力后,外观结构无明显变形,紧固件无松脱、断裂等。通海阀箱消声器声学性能无明显下降,插入损失保持大于8 dB。结论通海阀箱消声器在恶劣的环境条件下具有较高的可靠性。GJB 150A部分试验参数设计过于保守,对船舶非电子设备影响较小,可依据实测应力量值进行试验。

Environment Test of Sea Chest Silencer

Objective To verifyi the environmental suitability of sea chest silencer. Methods Structural composition, working principle and operating environment of the sea chest silencer were analyzed. Standards relevant to environment test were sum-marized. The parts of the surface ship in GJB 150A Methods for Environment Test of Military Equipment Laboratory Environment was cut out.. Tilt-swing test, vibration test and impact test were carried out according to GJB 150A to determine methods and relevant parameters of the above tests and design tooling for simulating seawater. Results After applying the ambient stress of the above tests, the sea chest silencer had no obvious deformation or loose and broken fasteners. The acoustic performance of the silencer had no obvious decrease, and insertion loss remained greater than 8 dB. Conclusion The sea chest silencer has high reliability under the bad environment condition; same test parameters of GJB 150A are designed too conservative, and it has less influence on the non-electronic equipment, and can be tested according to the measured force value.