无论是发电机组的进气门还是排气门，都需要保证在恶劣条件下能够稳定工作，并且要求气门具有足够的强度、耐磨性和耐热性；要求阀门重量轻，耐热性好。阀门与阀座环的紧密接触部分是阀锥面，应具有较高的密封性能和耐磨性。

Whether the inlet valve or exhaust valve of the generator set, it is necessary to ensure that it can work stably under bad conditions, and the valve is required to have sufficient strength, wear resistance and heat resistance; The valve is required to be light in weight and good in heat resistance. The close contact part between the valve and the seat ring is the valve cone, which should have high sealing performance and wear resistance.

阀门和阀座环在工作过程中受高温高压气体的冲击和机械负荷的影响，容易烧蚀磨损。阀门与阀座环的工作斜面，由于阀门的不断开闭，相互碰撞、敲击，并承受反复冲击载荷，在工作斜面上造成磨损、凹槽、斑点和凹陷。

The valve and seat ring are easily ablated and worn due to the impact of high temperature and high pressure gas and mechanical load during operation. Due to the continuous opening and closing of the valve, the working slope of the valve and the valve seat ring collides and knocks with each other, and bears repeated impact loads, resulting in wear, grooves, spots and depressions on the working slope.

发电机组阀杆在气门导管内移动时不断摩擦，润滑条件差，加之灰尘和磨料，使两者都磨损。积碳进入气门导管，加速气门杆和导管之间的磨损。气门杆尾端与摇臂发生碰撞，造成两者磨损。

When the valve stem of the generator set moves in the valve guide, it is constantly rubbed, and the lubrication conditions are poor. In addition, dust and abrasive wear both. Carbon deposits enter the valve guide and accelerate the wear between the valve stem and the guide. The tail end of the valve stem collides with the rocker arm, causing wear.

气门顶部受到气缸内的气体压力，气门杆的尾端通过挺杆被凸轮撞击，使气门杆弯曲。气门顶与活塞碰撞，使气门杆弯曲。气门杆端面摇臂间隙过小。热膨胀后抵抗阀杆端部使其弯曲，端面凹凸不平。

The top of the valve is subjected to the gas pressure in the cylinder, and the tail end of the valve stem is hit by the cam through the tappet to bend the valve stem. The valve crown collides with the piston, causing the valve stem to bend. The rocker arm clearance at the end face of the valve stem is too small. After thermal expansion, it resists the end of the valve stem to bend, and the end face is uneven.

发电机组阀门或阀座环的工作面与阀杆不同心，阀座与气门导管不同心，导致阀杆弯曲。气门杆和气门导管磨损后，配合间隙增大，气门杆在管内摆动使气门偏斜，造成气门头偏磨。当阀杆弯曲时，它会在阀门顶部产生歪斜和偏移。

The working surface of the generator set valve or valve seat ring is not concentric with the valve stem, and the valve seat is not concentric with the valve guide, resulting in the bending of the valve stem. After the valve stem and valve guide are worn, the fit clearance increases, and the valve stem swings in the pipe to deflect the valve, resulting in eccentric wear of the valve head. When the valve stem is bent, it will skew and offset the top of the valve.

发电机组阀杆磨损严重，凹陷、变薄、弯曲严重的阀门一般不予重复使用。阀杆曲率超过0.03mm，阀顶歪斜超过0.02mm，可用压力机修正修整，再用百分表检查，直至符合要求。

The valve rod of the generator set is seriously worn, and the valve with depression, thinning and serious bending is generally not reused. If the curvature of the valve stem exceeds 0.03mm and the deflection of the valve top exceeds 0.02mm, it can be corrected and trimmed with a press and checked with a dial indicator until it meets the requirements.

发电机组阀杆磨损后，其圆度和圆柱度偏差超过0.03mm，当直径减小超过允许尺寸时，应按修理尺寸研磨，或将阀杆修理到标准尺寸或由镀铬或镀铁。

After the valve rod of the generator set is worn, its roundness and cylindricity deviation exceeds 0.03mm. When the diameter decreases beyond the allowable size, it shall be ground according to the repair size, or the valve rod shall be repaired to the standard size or plated with chromium or iron.

瓦斯发电机组阀杆长度必须符合标准。若阀杆尾端面磨损，应按磨损的杆端面磨削。杆端的磨损量一般为0.50mm，以获得光滑平整的平面。

The length of valve rod of gas generator set must meet the standard. If the end face of the stem tail is worn, grind it according to the worn end face of the stem. The wear of the rod end is generally 0.50mm to obtain a smooth and flat plane.

发电机组的发动机气门损伤维修事项便是如此了，如果您想更多内容想了解就来网站www.huannengpower.com咨询吧！

This is the maintenance of engine valve damage of generator set. If you want more information, please visit www.huanengpower.com Com consultation!