First, the choice of hose
The correct selection of hoses can ensure the safety and rationality of the entire system, and the following points should be noted:
1. According to the system pressure, select the number of steel wire layers of the hose, the pressure is high, and the number of steel wire layers is large. Each hose has working pressure. Therefore, according to the actual system pressure, the working pressure of the selected hose is greater than the actual working pressure.
2. Select the inner diameter of the hose according to the flow rate. If the diameter of the pipe is too small, it will increase the flow rate of the medium in the hose, make the system heat up, reduce the efficiency, generate excessive pressure drop, and affect the performance of the entire system. If the diameter of the hose is too large, it will increase the cost, so when the inner diameter of the hose should be fixed with a pipe clamp or the hose should pass through a spacer such as a steel plate, the outer diameter of the hose should also be paid attention to.
3. When choosing a high-pressure hose, pay attention to the bending radius of the high-pressure hose. When calculating the bend radius, the pressure length of the front joint should be subtracted. If the bending radius of the installed hose is too small, it will reduce the bearing capacity of the hose and affect its service life.
4. Select the joint form reasonably according to the hydraulic configuration, such as SAE flange joint, female or male threaded joint, 90, 45 and other joint angles and the overall hose assembly angle.
Second, the hose storage.
1. The storage place of the upper and lower hoses should be kept clean and ventilated, the relative humidity and the temperature of the storage place should be kept away from direct sunlight and water.
2. If the hose needs to be flat temporarily in the open air, the hose must be flat and flat, and the bottom cover should be covered without stacking heavy objects; at the same time, the hose should not be in contact with the heat source.
3. When storing rubber hoses, they should be placed separately according to different varieties and specifications, and should not be mixed and stacked, and management cards should be hung.
4. When storing the hose, both ends of the hose must be tightly sealed to prevent debris from entering the hose.
5. The hose should be stored as relaxed as possible. Generally, hoses with a small inner diameter can be rolled up for storage.
6. In order to prevent the pipeline from being compressed and deformed during the storage process, the stacking should not be too high, and the pipeline should be stacked frequently during the storage process, not less than once a quarter.
7. When storing the hose, do not touch acid, alkali, oil, organic solvent or other corrosive liquids and gases, and keep 1m away from the heat source.
8. During storage, it is strictly forbidden to stack heavy objects on the tube to prevent external extrusion and damage.
9. During the storage period of the hose, it should be used for a long time, so as not to affect the quality of the hose due to the long storage time.
