1. What are the high-pressure water pipes and hoses?
Threading hose
The threading hose is mainly made of galvanized steel belt, stainless steel belt, PA, PE, PP and other plastic materials. Uses: mechanical manufacturing, electrical threading hose. Wire and cable protection in insulation protection, lighting equipment, automobile manufacturing, aviation equipment, subway, train, automation control and other industries. Features: good flexibility, anti-twisting, good bending performance, able to bear heavy loads; Acid resistance, lubricating oil, coolant, etc. The surface is shiny and resistant to friction. Can bear the heavy weight of the foot, without breaking or deformation, can recover quickly, and has no damage itself.
stainless steel
Stainless steel hoses mainly refer to hoses made of 304 stainless steel or 30 1 stainless steel. Purpose: Stainless steel hose assembly for wire protection of automatic instrument signal. Stainless steel hose for protecting precision optical ruler and sensing circuit. It has good flexibility, corrosion resistance, high temperature resistance, wear resistance, tensile resistance and water resistance. And provides a certain shielding effect.
metal
Metal hose mainly refers to spiral corrugated pipe; The other is an annular bellows. flexible metal tubing
Spiral corrugated pipe is a tubular shell with spirally arranged corrugations. There is a spiral angle between two adjacent ripples, and all the ripples can be connected by a spiral.
The annular corrugated pipe is a tubular shell with closed annular corrugations, and the corrugations are connected in series through the annular corrugations. The annular corrugated pipe is made of seamless pipe or welded pipe. Limited by the processing method, the length of single pipe is usually shorter than that of spiral corrugated pipe. The advantages of annular bellows are good elasticity and low stiffness.
Second, how to install high-pressure water pipes
The installation requirements of high-pressure pipelines are similar to those of medium and low-pressure pipelines, but the requirements are higher and the regulations are stricter. Therefore, in addition to meeting the installation requirements of medium and low pressure pipelines, the following requirements should also be met.
High-pressure pipes, fittings, fasteners and valves used for installation must pass the inspection and be accompanied by corresponding technical documents. After being transported to the site, it shall be properly kept, clearly marked and placed neatly. Before installation, the internal and external surfaces should be wiped clean, and the internal passage should be checked for foreign objects and smoothness. Check whether the roughness of nozzle sealing surface and gasket meets the requirements. There shall be no scratches (especially radial scratches), spots and other defects on the sealing surface that affect the sealing performance. In addition to the degreasing pipeline, the sealing surface and gasket of the nozzle should be protected with engine oil or butter or white vaseline. Except for the degreasing pipe, the thread part of the high-pressure pipe end that has passed the inspection shall be protected by molybdenum disulfide grease or graphite engine oil blending agent.
When installing pipelines, formal pipe supports should be used for fixing, and protective sleeves should be installed on the pipe supports in contact with high-pressure pipelines and fittings according to design requirements. When installing the high-pressure flange, the chamfer of the pipe end thread should be exposed. When installing the gasket, don't hang it with iron wire, grease the nozzle and gasket in advance, and put the soft metal high-pressure gasket into the sealing seat accurately. Flange bolts shall be tightened symmetrically and evenly, and shall not be overtightened. After the bolts are tightened, the two flanges should be parallel and concentric, and the threads exposed outside the nut should be 2-3 threads, at least 2 threads, and the exposed length of each bolt should be basically the same. During installation, it is not allowed to make up for manufacturing or installation errors by pulling, pushing, twisting or modifying the thickness of the gasket. If the pipeline installation cannot be carried out and completed continuously, the open nozzle should be closed in time. Parts of the instrument sampling part on the pipeline shall be installed at the same time as the pipeline.
When the local camber of alloy steel pipe is corrected, its heating temperature must be controlled below the critical temperature of steel.
After the pipeline system is installed, the steel seal mark on the pipeline should be thoroughly checked. If the seal is missing, it should be supplemented in time according to the original basis.
The above recommendations are about the installation suggestions and specific promotion information of high-pressure hoses, telling us that there are many models and specifications of high-pressure hoses for reference, and the corresponding effects are different. The common ones may be steel high-pressure hoses and iron high-pressure hoses, which can be used to make high pressure and achieve the purpose of stable control in the pipeline system of pressure steam boilers, so they are widely used in daily life or production workshops.