Prevention of leaks at pipe joints

In the hydraulic system, whether it is metal pipe joints, or hose fittings, there are easy to produce the problem of leakage.

Date:

2024/10/30

In the hydraulic system, whether it is metal pipe joints, or hose fittings, there are easy to produce the problem of leakage. For the tube fitting, mostly due to the pipe by a large external force or impact, so that the ferrule loosening or tube end surface deformation caused by leakage, at this time should check whether the ferrule is out of round, edge of the edge of the defective, whether the tube end is intact as well as the degree of compression of the ferrule nut, etc., and at the same time, but also to eliminate the pipeline external forces. For flared pipe joints, mostly due to excessive flaring, quality is not required or repeatedly disassembled, resulting in flaring deformation or cracks caused by leakage, this time the front end can be cut off to re-flare. If the use of male and female cone top pressure for sealing, most of the leakage is due to the two cone surface damage, available grinding sand to grind the cone surface. In some of the “о”-shaped ring by the end or the outer diameter of the sealing occasions, the leakage of the following reasons: “о”-shaped ring aging or deformation caused by leakage; “о”-shaped ring assembly is not in place The “о”-ring assembly is not in place, so that the two planes are connected when the pressure is not flat or “о”-ring is cut to cause leakage; “о”-ring is not compact, the elastic deformation is not enough to cause leakage; “о”-ring stop groove too deep and leakage caused by the “о” ring stop groove is too deep. In this regard, the need to re-select the same outside diameter and cross-section of the thicker “о” ring, but also with a stop slot sealing plane for cutting or grinding to reduce the depth of the stop groove, so that the “о” ring has enough elastic deformation (compression should be in general) 0.35-0.65mm). For the use of oil-resistant rubber sheet, wool felt, soft steel cardboard, a combination of sealing gaskets or sealant leakage at the pipe joints, no matter what the material, first of all, should be checked for sealing damage, deformation, aging and roughness and so on, and then take appropriate measures.

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