First of all, Zhenhai flow control valve manufacturer said to select the appropriate hydraulic valve, is to make the overall planning of the hydraulic system effective, safety engineering function is very good, easy to install and maintain maintenance, and to ensure that the system software all the key criteria for normal work. Because the selection of hydraulic valve appropriate whether, the success of the system and failure has a very large correlation, so must be carefully completed. Below, we actually and the big guys dissect it.
Hydraulic valve model selection of general rules
(1) according to the system of dragging and manipulation function regulations, effectively select the function and type of hydraulic valve, and with the hydraulic pump, electric actuator and hydraulic auxiliary parts, etc. together with the composition of intact hydraulic control circuit and system circuit schematic.
(2) Preference is given to the use of the current standard stereotyped product series, unless it is a last resort to independent overall planning of special hydraulic control valves.
(3) quality integrated valve set suppliers according to the system working pressure and according to the total flow (total work flow) and taking into account the type of valve, installation docking methods, control methods, working materials, limits and quality, working life, reasonableness, adaptability and ease of maintenance, first-hand supply and commodity history time from the relevant overall planning guide or commodity samples to choose.
Selection of hydraulic valve types
Hydraulic valve system function regulations are not the same, the selected hydraulic valve function regulations are not the same, high precision integrated valve set manufacturers and many functions and suffer from structural characteristics of the hazard. For example, about the phase change rate provisions fast system, generally select the communication AC electro-hydraulic reversing valve; On the contrary, the phase change rate provisions slow system, you can select DC electro-hydraulic reversing valve; such as hydraulic system on the valve center calibration and alignment function provisions especially strict can select hydraulic to small and medium-sized structure; if the application of hydraulic check valve, and the reverse direction bubble oil back pressure type is higher, but the manipulation pressure is unlikely to raise very high places If the application of hydraulic control check valve and the reverse direction of oil back pressure type higher, but the manipulation pressure is unlikely to raise the high place, then should select leakage type or dominant type structure; about maintenance system safety pressure valve, the provisions of flexible response, pressure open loop gain small, in order to prevent large impact pressure, and can absorb the impact caused by the hydraulic directional valve phase change, it is necessary to select the components that can achieve the above functional provisions; if the general flow valve because of the pressure or temperature shift, and can not achieve the actuator fitness movement Precision provisions, then should be selected with pressure compensation machinery and equipment or temperature compensation machinery and equipment speed control valve.