原文：
1、增加刚度法 对振荡和轻微振动，可增大刚度来xx或减弱，如选用大刚度的弹簧，改用活塞执行机构等办法都是可行的。 2、增加阻尼法 增加阻尼即增加对振动的摩擦，如套筒阀的阀塞可采用“O”形圈密封，采用具有较大摩擦力的石墨填料等，这对消 除或减弱轻微的振动还是有一定作用的。 3、增大导向尺寸，减小配合间隙法 轴塞形阀一般导向尺寸都较小，所有阀配合间隙一般都较大，有0.4～lmm，这对产生机械振动是有帮助。因此，在发生轻微的机械振动时，可通过增大导向尺寸，减小配合间隙来削弱振动。 4、改变节流件形状，xx共振法 因调节阀的所谓振源发生在高速流动、压力急剧变化的节流口，改变节流件的形状即可改变振源频率，在共振不强烈时比较容易解决。具体办法是将在振动开度范围内阀芯曲面车削0.5～1.0mm。如某厂家属区附近安装了一台自力式压力调节阀，因共振产生啸叫影响职工休息，我们将阀芯曲面车掉0.5mm后，共振啸叫声消失。 5、更换节流件xx共振法 原理同4.5中的4），只不过是更换节流件。其方法有：①更换流量特性，对数改线性，线性改对数；②更换阀芯形式。如将轴塞形改为“V”形槽阀芯，将双座阀轴塞型改成套筒型；将开窗口的套筒改为打小孔的套筒等。如某氮肥厂一台DN25双座阀，阀杆与阀芯连接处经常振断，我们确认为共振后，将直线特性阀芯改为对数性阀芯，问题得到解决。又如某航空学院实验室用一台DN200套筒阀，阀塞产生强烈旋转无法投用，将开窗口的套筒改为打小孔的套筒后，旋转立即消失。 6、更换调节阀类型以xx共振 不同结构形式的调节阀，其固有频率自然不同，更换调节阀类型是从根本上xx共振的xxx的方法。一台阀在使用中共振十分厉害———强烈地振动（严重时可将阀破坏），强烈地旋转（甚至阀杆被振断、扭断），而且产生强烈的噪音（高达100多分贝）的阀，只要把它更换成一台结构差异较大的阀，立刻见效，强烈共振奇迹般地消失。如某维尼纶厂新扩建工程选用一台DN200套筒阀，上述三种现象都存在，DN300的管道随之跳动，阀塞旋转，噪音100多分贝，共振开度20～70％，考虑共振开度大，改用一台双座阀后，共振消失，投运正常。 7、减小汽蚀振动法 对因空化汽泡破裂而产生的汽蚀振动，自然应在减小空化上想办法。①让气泡破裂产生的冲击能量不作用在固体表面上，特别是阀芯上，而是让液体吸收。套筒阀就具有这个特点，因此可以将轴塞型阀芯改成套筒型。②采取减小空化的一切办法，如增加节流阻力，增大缩流口压力，分级或串联减压等。 8、避开振源波击法 外来振源波击引起阀振动，这显然是调节阀正常工作时所应避开的，如果产生这种振动，应当采取相应的措施。

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译文：
1, increased stiffness method Slight vibration of the oscillation and can be eliminated or reduced stiffness increased, such as the use big spring stiffness, use such means as the piston actuator is feasible. 2, increase the damping method Increase the vibration damping is to increase the friction sleeve valve as the valve plug can use "O"-ring seal, have greater friction with filler such as graphite, which eliminate or reduce vibration, or have some minor role. 3, increasing the size oriented, reducing the gap with the law Plug valve axis generally oriented dimensions are small, with all the valves were relatively large gap, there is 0.4 ~ lmm, which produces mechanical vibration is helpful. Therefore, in the event of a slight mechanical vibration, driven by increased size, decreased with the gap to weaken the vibration. 4, changing the shape of cutting pieces to eliminate resonance method Because of the so-called local oscillator valve in high-speed flow, rapid changes in throttle pressure to change the cutting conditions can change the shape of the local oscillator frequency, the resonance is not strong is easier to solve. Specific approach is Vibration opening in the surface within the spool turning 0.5 ~ 1.0mm. If family members near a factory installed a Self-pressure regulating valve, whistle effects due to resonance production staff rest, we will spool out 0.5mm surface vehicles, the resonance howling away. 5, replacing throttle parts to eliminate resonance method Principle 4 with 4.5), just replace throttle parts. The methods are: ① change flow characteristics, the number of changes on linear, logarithmic linear change; ② replacement spool form. If the shaft-shaped plug into "V" shaped groove spool, the seat valve shaft into the sleeve-type stopper; will open a window to hit holes in the sleeve sleeve, etc.. If a nitrogen fertilizer plant a DN25 valve seat, valve stem and the junction off the regular vibration, we are recognized as a resonance, the line features will be changed on a few of the spool valve, the problem is resolved. Another example of a college laboratory air sleeve with a DN200 valve, valve plug rotation can not produce a strong cast, that will open the window of the sleeve into the sleeve holes to play, the rotation immediately disappear. 6, the replacement valve to eliminate the resonance type Different structural forms of control valve, the natural frequency natural different types of valve replacement is to fundamentally eliminate the resonance of the most effective way. A valve in use is very powerful --- a strong resonance vibration (severe valve damage may be), strong rotation (or vibration stem is broken, is broken), and produced a strong noise (up to more than 100 db) the valve, as long as it replaced with a structure quite different valve, immediately effective, strong resonance miraculously disappear. If a new expansion plant selection Vinylon a DN200 valve sleeve, the three phenomena exist, DN300 beating along the pipeline, valves, rotary plug, the noise over 100 db, resonant opening from 20 to 70%, consider the resonance opening large, use a seat valve, the resonance disappears into operation normal. 7, reducing cavitation vibration method Cavitation bubbles due to rupture of cavitation generated vibration, nature should find ways on reducing cavitation. ① to the impact of the energy produced by bubble burst is not the role of a solid surface, especially the spool, but on the liquid absorbed. Sleeve valve to have this feature, so you can spool shaft into the sleeve-type stopper. To reduce cavitation ② all the way, such as increased throttle resistance, reducing flow increased population pressure, classification or series decompression. 8, to avoid the local oscillator wave hit France External source of vibration caused by valve vibration wave hit, apparently by regulating valve normal working hours should be avoided, if they have such vibration, appropriate measures should be taken.