What should I pay attention to when installing hoses? (a) the.

Determine the appropriate bending radius:

At present, many hose manufacturers can provide hoses with bending radius smaller than that specified in the promulgated industrial standards, but they should avoid that the bending curvature of hoses is smaller than the recommended small curvature radius, so as to avoid shortening the service life. Therefore, pipe laying should first provide enough bending radius. After installation, the bending radius of the hose should not be less than 8~10 times of the outer diameter of the hose, and the roots of joints at both ends of the hose should not be bent. A certain straight section shall be reserved, and its length shall not be less than 6 times of the outer diameter of the hose. In order to avoid sharp bending, it can be smoothly bent by winding springs or supporting steel belts outside the hose.

Correct determination of hose length:

Because the hose is flexible, its flexibility must be considered when determining the length of the hose. According to the type of hose, when the pressure changes, the hose can be extended by 2% and shortened by 4%. This change in length will cause fatigue and damage to the steel wire layer of the hose, especially at the hose joint. Therefore, considering the shrinkage of the hose, it is necessary to leave a little longer in the shearing process as compensation. If the hose length is not enough, it can be lengthened by connecting two hoses through a transition joint.

Avoid twisting the hose:

When there is relative movement between two connected parts of a hose bent in the same plane, avoid twisting the hose, otherwise the pressure bearing capacity of the hose will be reduced. The test results show that the service life of high-pressure hose can be reduced by 70% by twisting 5, and 90% by twisting 70. To avoid distortion, chalk a straight line parallel to the center line on the hose before assembly, so as to check whether the hose after installation is twisted.

Treatment method of flexible pipe bending in multi-plane;

The arrangement of hoses is usually carried out in the later stage of design work, so it is difficult to find an ideal path. Multi-plane bending can often be avoided by reorienting the hose. If this does not work, a hose clamp should be installed between the two bends, and sufficient length should be provided on both sides of the hose clamp to release the tension of the hose wire layer. This length depends on the quality of the hose, the degree of bending and the steel wire layer of the hose, so it must be designed separately for different objects.

Another alternative method is to use a separate hose for each bend in the plane, and install a hose joint and hose clamp between the two bends. However, this method is not only costly and takes a long time to install, but also increases the potential leakage possibility at the hose joint, so it is seldom used.