The main factor of hydraulic system leakage

The existence of the main factors of the hydraulic system leak leakage is harmful to the hydraulic system and mechanical work, such as hydraulic system pressure adjustment is not high, the ability to work is reduced, actuator movement speed is not stable, working efficiency of the hydraulic system is reduced, the oil temperature is high, cause the materials such as waste oil, may lead to hydraulic system failure, even the whole mechanical control will also pollute the environment, even fire. Therefore, the leakage of hydraulic system not only affects the safety of the system, increases the machine's downtime, reduces productivity, but also increases production costs and damages the product. Therefore, the leakage of the hydraulic system must be controlled. Before controlling a leak in a hydraulic system, it is necessary to understand the cause of the leak.

The main causes of hydraulic system leakage are as follows: design defect of hydraulic system; Problems in hydraulic system manufacturing; Wrong assembling mode of hydraulic system; The hydraulic system equipment is lack of maintenance in use.

The main factors

(1) Design factors Design factors include the selection of hydraulic components, hydraulic accessories, sealing components, pipe joints and hydraulic oil; Hydraulic system schematic diagram, vibration proof, impact resistance link; Eliminate lateral load of piston rod and transmission shaft seals; System heat dissipation and oil pollution control.

(2) Processing, manufacturing, storage and transportation elements Processing, manufacturing, storage and transportation factors include the processing of valve block throttle valve, the processing of valve block jack, groove, surface, roughness, processing quality of static bonding surface, sealing ring, hydraulic oil storage and transportation, etc. The sealing ring is self-tightening extrusion seal. The basic working principle is that the elastic deformation of the seal produces contact pressure on the sealing contact surface. If the contact pressure is greater than the internal pressure of the sealing medium, leakage will not occur, otherwise leakage will occur.

(3) Assembly and Debugging factors Assembly debugging factors include the selection of assembly screws, the loading of screw tightening torque, assembly methods, bolt anti-loosening measures, valve block inspection and pollutant cleaning before assembly, pipe installation, static joint surface seal, etc.

(4) Post-maintenance factors Post-maintenance factors include regular testing of hydraulic oil pollution content and oil temperature, replacement of seals, control of the air dust and moisture into the hydraulic system, etc.

Understand the above points, and then cooperate with hydraulic leakage, there will be no hurry!