電蒸汽鍋爐http://www.nenp.com.cn/爐膛負壓過大，加劇了對煙管、尾部對流管壁的磨損，時間一長對流管壁會磨損減薄，且易出現主汽溫度偏高，發生超溫爆管等事故，對鍋爐安全運行危害更大。
　　
1、電蒸汽鍋爐爐膛負壓過大會使受熱面和爐排工況惡化；爐門、鋼架變形，爐墻裂縫。
Electric steam boiler furnace pressure over the General Assembly so that the heating surface and grate conditions deteriorate; door, steel deformation, cracks in the furnace wall.
　　
2、電蒸汽鍋爐爐膛負壓過大會加劇對流管壁的磨損，金屬管壁過熱，破壞水循環。
Electric steam boiler furnace pressure over the General Assembly increased convection wall wear, metal wall overheating, damage the water cycle.
　　
3、電蒸汽鍋爐爐膛負壓過大易使煙管脹口泄漏，蒸汽大量帶水，惡化蒸汽品質，發生水沖擊。
Electric steam boiler furnace pressure is too easy to make big bulging mouth breathing tube leak, with a lot of water vapor, the deterioration of the quality of steam, water hammer occurs.
　　
4、電蒸汽鍋爐http://www.nenp.com.cn/爐膛負壓過大會加劇受熱面的腐蝕。
Electric steam boiler furnace pressure over the General Assembly increased heating surface corrosion.