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填料密封处故障采取什么措施
添加时间:2019-12-27 16:38:14

跟着我国工业技术的疾速开展,关于工业泵的要求也是越来越高,尤其是密封性。工业泵的密封对全部装备运行来提及偏重要的作用,工业泵的密封系统泄漏将会严重影响到装备的平常运行。尤其是高温高压泵的开展,更使得对泵的密封加倍严格。工业泵选型本日来说说填料密封处分故障采取的措施。

1、填料材料的选定。选定填料时我们要紧看是否具备这几个前提:

①在压盖压力下有足够的塑性,在压紧力作用下能否产生必然的径向力并与紧密轴接触,添补所有的松孔、裂缝,从而堵塞泄漏。

②有足够的化学稳定性,不玷污介质,填料不被介质泡胀,填猜中的浸渍剂不被介质溶解,不受密封的液体、气体和润滑液体的侵蚀。

③有自动松弛的余地,耐磨,冲突系数小,而不致产生毁坏性的冲突和热。

④轴存在少量偏移时,填料是否有足够的浮转动性;生产是否简单、填装利便。

2、加装填料。在加装填料是,必须对填料室清算洁净,不允许有任何杂质和污垢。搜检填料函和填料尺寸,根据泵轴的尺寸圈切,不易太短。填装时不得用锐器(如改锥、铁丝等)扎压填料,省得使填料形成孔洞影响密封效果,装填压实过程当中压盖不行偏斜,造成靠近压盖一段的填料压得太紧,紧固时要匀称用力。加装填料后,盘根不易加的太紧,应有必然的松度。

With the rapid development of China's industrial technology, the requirements for industrial pumps are becoming higher and higher, especially the sealing performance. The sealing of industrial pump plays an important role in the operation of all equipment. The leakage of sealing system of industrial pump will seriously affect the normal operation of equipment. Especially the development of high temperature and high pressure pump makes the sealing of pump more strict. Industrial pump selection this day to talk about the failure of packing seal measures taken.


1. Selection of filler material. When selecting fillers, we should pay attention to the following premises:


① There is enough plasticity under the gland pressure. Under the compression force, whether it can produce the necessary radial force and contact with the tight shaft can supplement all the loose holes and cracks, so as to block the leakage.


② It has enough chemical stability, does not stain the medium, the filler is not expanded by the medium, the filling impregnant is not dissolved by the medium, and is not eroded by the sealing liquid, gas and lubricating liquid.


③ There is room for automatic relaxation, wear resistance, small conflict coefficient, without damaging conflict and heat.


④ If there is a small deviation of the shaft, whether the packing has enough floating rotation; whether the production is simple and filling is convenient.


2. Add packing. When adding packing, the packing room must be cleaned and free of any impurities and dirt. Check the size of stuffing box and packing, and circle cut according to the size of pump shaft, which is not easy to be too short. When filling, sharp tools (such as screwdriver, wire, etc.) shall not be used to press the packing, so as to avoid the formation of holes in the packing and affect the sealing effect. During the filling and compaction process, the gland shall not be inclined, resulting in too tight compression of the packing near the gland section, and uniform force shall be used when tightening. After the packing is added, the packing is not easy to be added too tightly, and there should be a certain degree of looseness.