Hydraulic steel wire hydraulic flexible fuel hose oil suction hose

Notes for installation of high-pressure rubber hose joint

 

(1) if the self-weight of the rubber hose causes excessive deformation, there should be supporting parts.

 

(2) the rubber hose shall not be excessively bent or bent at the root when moving or stationary, but shall be bent at least 1.5 times of its diameter;

 

(3) when the rubber hose moves to an extreme position, it shall not be stretched too tight, but rather relaxed;

 

(4) try to avoid torsional deformation of the rubber hose;

 

(5) the rubber hose should be kept away from the heat radiation components as far as possible.

 

(6) external damage of the rubber hose, such as long-term friction on the surface of the same component during use, should be avoided;

 

Hydraulic pipe joint is a part in hydraulic system that connects high pressure oil pipe and high pressure oil pipe. Hydraulic pipe joints and can be divided into hydraulic hose, high pressure ball valve, quick joints, pipe connector of cutting sleeve type, welded pipe joints, high pressure hose, transitional type pipe joints, pipe connector of cutting sleeve type, pipe fittings, non-standard type three-pass pipe joint, flaring pipe, rectangular pipe joints, rotary pipe joint, quick joints, stainless steel pipe, copper connectors.

 

Prevention of leakage at pipe joints

 

In the hydraulic system, whether it is metal pipe joints, or hose joints, there are prone to leakage problems. As for the bayonet type pipe joints, most of them leak due to the loosening of the bayonet or the deformation of the end face of the pipe due to the greater external force or impact on the pipe. At this time, it is necessary to check whether the bayonet is round or not, whether the cutting edge is defective, whether the pipe end is intact and the degree of compression of the bayonet nut, etc., and at the same time eliminate the external force of the pipe. For flaring pipe joints, most of them leak due to excessive flaring, poor quality or repeated disassembly, resulting in flaring deformation or cracks, etc. At this time, the front end can be cut off and re-flaring. If the use of male and female cone top pressure seal, the leakage is mostly due to the damage of the two cone surface, grinding sand can be used on the cone surface. In some cases where the "macau" shaped ring is close to the end face or the outside diameter seal, the leakage causes are as follows: the "macau" shaped ring is aging or deformed causing leakage; The assembly of "" shaped ring is not in place, so that the two planes are connected unevenly or the" "shaped ring is cut to cause leakage; The shape circle is not compacted, the elastic deformation is insufficient to cause leakage; Too deep groove of groove groove of shape circle causing leakage. In this regard, it is necessary to re-select the "" shaped ring with the same outer diameter and thicker section, or cut or grind the sealing plane with the groove at the mouth to reduce the depth of the groove at the mouth, so that the" "shaped ring has enough elastic deformation (generally, the compression should be between 0.35-0.65mm). For the use of oil resistant plastic plate, wool felt, soft steel board, combination of sealing gasket or sealant pipe joint leakage, no matter what the material, should first check whether the sealing is damaged, deformation, aging and roughness is too large, and then take the corresponding measures.