空間真空環(huán)境下密封電磁繼電器的觸點(diǎn)失效研究

The contact failure of hermetically sealed electromagnetic relays used in space vacuum environment

摘要: 密封電磁繼電器有其固有的漏率，在應(yīng)用于空間真空環(huán)境下由于氣體泄漏使得其內(nèi)部氣體壓力逐漸降低，導(dǎo)致繼電器的觸點(diǎn)在低氣壓環(huán)境下工作失效（負(fù)載切換時(shí)）。文章選擇國(guó)產(chǎn)繼電器樣品對(duì)上述機(jī)理進(jìn)行了試驗(yàn)驗(yàn)證，并對(duì)繼電器內(nèi)部氣體壓力與觸點(diǎn)電弧失效的規(guī)律進(jìn)行了研究。

Abstract: The leakage rate is an inherent property of hermetically sealed electromagnetic relays. When used in the space vacuum environment, the relay’s inner gas will progressively release and its inner pressure will be reduced gradually. As a result, the relay’s contact points may be switched into a low pressure environment and the contact failure may occur. In order to verify such mechanism, some homemade relay samples are selected and the contact switching experiments are conducted. The arc failure laws of the relay’s contact point switching in a low inner pressure are studied.

用微信掃碼二維碼

分享至好友和朋友圈