Installation instruction of high pressure hose？

High-pressure hose pipe installation with medium and low-pressure pipeline installation requirements are similar, but the requirements are higher, more stringent provisions, therefore, in addition to the need to comply with medium and low-pressure pipeline installation requirements, should also be implemented by the following requirements.

Used to install high-pressure hose sections, fittings, fasteners, and valves must be tested and qualified, and accompanied by the appropriate technical documents, should be properly stored after delivery to the site, marked obviously, and placed neatly. Before installation, the inner and outer surfaces should be wiped clean, and at the same time, check whether the inner channel has foreign objects and whether it is unobstructed. Check whether the roughness of the sealing surface of the nozzle and the sealing gasket meets the requirements, and there shall be no scratches (especially radial scratches), spots and other defects affecting the sealing performance exist on the sealing surface, except for the pipeline specified to be degreased, the sealing surface of the nozzle and the sealing gasket shall be coated with machine oil or grease or white petroleum jelly for protection. The threaded part of the pipe end of the high-pressure hose that has been checked and qualified should be coated with molybdenum disulfide grease or graphite machine oil's blending agent for protection, except for the pipes that are specified to be degreased.

When the pipe is installed, it should be fixed with formal pipe racks, and the protective sleeve should be installed on the pipe racks in contact with the high-pressure hose sub and pipe fittings according to the design requirements. Installation of high-pressure flanges should expose the chamfer of the pipe end threads. When installing the gasket, do not hang it with metal wires, and grease the pipe mouth and the gasket beforehand, and the soft metal high-pressure gasket should be accurately put into the sealing seat. Flange bolts should be tightened symmetrically and evenly, not excessively, after the bolts are tightened, the two flanges should be kept parallel and concentric, and the threads exposed outside the nut should be 2~3 buckles, at least should not be less than 2 buckles, and make the exposed length of each bolt the same. In the process of installation, it shall not be used to make up for the manufacturing or installation errors by strong pulling, pushing, twisting, or modifying the thickness of the gasket. Pipeline installation work, such as the impossibility of continuous and complete, should be closed promptly by opening a high-pressure hose port. The parts of the instrument sampling part on the pipeline shall be installed at the same time as the pipeline.

When the high-pressure hose is subjected to local bending correction, its heating temperature must be controlled below the critical temperature of the steel.

After the piping system is installed, the steel mark on the pipeline should be comprehensively reviewed, and if it is found that the steel mark is missing somewhere, it should be made up in time according to the original basis.