Hydraulic station solenoid valve failure which factors lead to? I will share with you from the more common four factors: the common failure of hydraulic valves will cause great harm to all hydraulic systems, the four common factors.
First, reflex ineffective
(1) damage: hydraulic valve spool, valve sleeve, oil circuit board and other mechanical parts of the movement between the vice, in the application of continuous friction, prompting the specification of the parts look like and process performance changes and ineffective.
(2) fatigue: in the long-term variable load work, hydraulic valves in the spring yellow will be due to fatigue lead to spring yellow loose, spring yellow length reduction or all fracture; valve heart, high pressure gate valve will also be due to fatigue, resulting in cracks, fall off or other destruction. This kind of are very likely to make the valve invalid.
(3) deformation: hydraulic valve parts in the hydraulic station in the production process of residual stress and the application of the whole process of external load stress exceeds the tensile strength of the raw materials of the parts, the parts caused by deformation, can not carry out all the normal role of invalid.
(4) erosion: gear oil with too much water or acidic substances, long-term application, will erode the hydraulic valve in the relevant parts, destroying the need for precision and ineffective.
Second, the hydraulic machine fastening
Working pressure hydraulic oil flows through the hydraulic valve cylindrical rotary vane pump structure, the efficacy of the valve in the heart of the axial non-interaction force so that the valve heart jammed, known as the "hydraulic machine fastening".
Third, the hydraulic press impact
Hydraulic system because of rapid phase change or turn off the oil channel, so that the system software within the fluidity of the hydraulic oil suddenly phase change or termination of fluidity, resulting in a substantial increase in working pressure, resulting in a very large high value of the working pressure, that is, the hydraulic press impact.
Fourth, the phenomenon of air pockets
In the hydraulic system, due to the liquid water flow changes caused by the working pressure reduction and the condition of the bubble is called "cavitation". Cavitation and vapour corrosion make the hydraulic system work in the characteristics of the evil change, the credibility of the reduction.
To sum up the above analysis: the hydraulic valve reflex invalid in addition to the production process manufacturing elements, the key with the management method, and therefore do not have to until the hydraulic system can not be all normal work in a high degree of importance. We in general to a large number of pre-discernment, ready to deal with the hydraulic valve invalid machine equipment caused by common failures in the nip in the bud.
