china hydraulic valve manifold block suppliers,china high pressure hydraulic manifold blocks manufacturer

china hydraulic valve manifold block suppliers,china high pressure hydraulic manifold blocks manufacturer

 

Analysis method of failure maintenance of hydraulic system

 

With the popularization and application of hydraulic technology in today’s society, there are more and more hydraulic systems of all kinds of mechanical equipment, and they are increasingly complex, so the requirement of fault diagnosis level is becoming higher and higher. Someone once said: “mechanical failure is easy to find and repair, hydraulic failure is easy to find”. It shows a problem from the side, the failure of the hydraulic system is not easy to diagnose, not easy to find, once the fault is found, repair is easier. Suppliers: China Hydraulic valve manifold block Suppliers, China high pressure Hydraulic manifold blocks manufacturer

 

 

 

Generally take cleaning, grinding, replacement and other methods can be eliminated, the analysis method can solve a lot of hydraulic system faults, but the analyst requirements are higher, must fully understand and familiar with the hydraulic components and hydraulic principle. Otherwise, the implementation has certain difficulty. The following example illustrates the use of analysis method for hydraulic system fault diagnosis and elimination. Suppliers: China Hydraulic valve manifold block Suppliers, China high pressure Hydraulic manifold blocks manufacturer

 

Examples to explain the hydraulic system maintenance fault analysis method

1, hydraulic system failure maintenance example 1

 

System failure: at the moment when the reversing valve 3 stops at the middle position, the oil cylinder 2 cannot stay accurately, but falls back a little

 

Cause of failure:

 

System into the air, reversing valve in 3 stops to open Beginning doubts directional control valve has a problem, replace the reversing valve 3 phenomenon is changeless, 6 regulating lever regulating variable vane pump, the pressure change between 0 to 2.5 MPa, repeated many times, found between the pump motor oil leakage of flange, estimated pump solid frame oil seal is damaged, change new oil seal, troubleshooting, The reason is that during the operation of the oil pump, the low pressure oil chamber of the pump becomes negative pressure so that the air enters the system from the oil seal. When the reversing valve 3 changes to the middle oil cylinder, the oil in the two cavities is blocked, and the oil cylinder continues to move due to inertia. In this way, the oil in one cavity of the oil cylinder compresses, and the other cavity forms negative pressure, so the piston of the oil cylinder may be pushed back. This possibility becomes true when air enters at a certain level. Suppliers: China Hydraulic valve manifold block Suppliers, China high pressure Hydraulic manifold blocks manufacturer

 

Examples to explain the hydraulic system maintenance fault analysis method

 

2, hydraulic system fault maintenance example 2

 

System failure: the system has 10MPa pressure, the reversing valve operates, but the cylinder does not move.

 

Cause of failure:

 

Component fit size is not required (as shown in Figure 2). When the pressure of the system is 10MPa, the reversing valve acts, but the oil cylinder does not move. When the cylinder pipe joint is removed, no oil arrives. The problem lies in the one-way valve 3. The reason is that when the opening of the one-way valve is small, the oil route from A to B is A throttle port, and Pa>Pb, where Pa, Pb M are the pressure of port A and port B, respectively. When (Pa A Pb)A> F (A is the axial compression area of the seat, f is the friction force), the seat will move to the left, and in the position of FIG. 4, the oil is blocked, which is extremely dangerous. Assume that the relief valve 4 in the one-way valve, the pump out of the oil can not overflow, will damage the oil pump or burning motor. Solution: Ensure the interference fit between the seat and the body. Suppliers: China Hydraulic valve manifold block Suppliers, China high pressure Hydraulic manifold blocks manufacturer

 

Examples to explain the hydraulic system maintenance fault analysis method

 

Hydraulic oil pump

 

3, hydraulic system failure maintenance example 3

 

System failure: The system pressure is. 5MPa, when the temperature rises, the system pressure drops, and when it is seriously reduced to 2MPa, the relief valve is suspected, and the relief valve is replaced. The phenomenon is not eliminated. Suppliers: China Hydraulic valve manifold block Suppliers, China high pressure Hydraulic manifold blocks manufacturer

 

Cause of failure:

 

A small cone is used to block the remote port of the relief valve, and the phenomenon is eliminated. Remove the cone and replace the 22D – 10B valve. The appearance shows that the 22D – 10B internal leakage is large, and the relief valve is out of control. Because there is no two-position two-way valve in the middle and high pressure valve, replace 22D and 10B with 24DF3 and E6B, and the fault is removed. There is too much leakage inside the element. Suppliers: China Hydraulic valve manifold block Suppliers, China high pressure Hydraulic manifold blocks manufacturer

 

 

 

The above is some knowledge of hydraulic system failure maintenance, to the manufacturer: china hydraulic valve manifold block suppliers,china high pressure hydraulic manifold blocks Manufacturer Hydraulic Machinery Co., Ltd. specializes in manufacturing hydraulic products, welcome to discuss at any time.

Back to the homepage

manifold-block-news

china high pressure hydraulic manifold blocks suppliers,china hudraulic manifold block suppliers