Corrosion-resistant stainless steel bellows corrugated expansion joint types

Corrosion-resistant stainless steel bellows corrugated expansion joint types
Stainless steel bellows compensator, the compensator mainly has absorption of axial displacement of the internal pressure axial type, external pressure axial type; absorption of lateral (lateral) displacement of the large tie rod lateral type and compound tie rod type; absorption of angular displacement of the universal type and hinge type. The advantage is that the compact structure occupies less space, no leakage, and the compensation volume is larger; the defect is that the internal thrust is large, and the installation quality requirements are strict. Pipeline as far as possible to make full use of across and towards the turn and adjust the pipeline height difference caused by natural π-type, L-type and G-type compensation. In order to reduce pressure loss, no natural compensation of the flat pipe section should be selected appropriate compensator, not deliberately set π-type compensator. Product structure: The structure mainly has the overall seal seat (seal seat must be _ level forged steel as a whole to create, forbidden to splice, to avoid stress concentration), seal gland, seal gland is equipped with friction reduction centering bearing, reducer, ring and sealing material, wear-resistant high-strength stainless steel composite end and sealing material, rotating cylinder, fasteners and other components. At this stage, the pipeline is often used in the form of compensation to compensate for thermal expansion and contraction of the pipeline, the common types of pipeline compensator are: bellows compensator, sleeve compensator, spherical compensator, square compensator and no thrust rotary cylinder compensation, etc., should be based on different laying methods to choose a different compensation type.
1 . Sleeve compensator, the compensator has a large compensation volume, occupies a small area, small flow resistance and other advantages; defect is only for no lateral displacement conditions, easy to leak, maintenance workload, thrust, strict requirements for manufacturing and installation. Therefore, at this stage, this type is selected less.
2 . Spherical compensator, the compensator mainly makes full use of the angular displacement, usually consists of two groups, the absorption is usually 0 - 15 °, the maximum can reach 230, the compensation is large, but easy to leak, reliability is poor, large diameter spherical compensator use practice is less.
3 . Square compensator, the compensator does not need to buy, with four elbows and straight pipe section welded together, the advantage is simple processing, easy installation, compensation volume based on the length and width of the arm to determine, is the most common compensator. The disadvantage is that the horizontal square compensator occupies a large area, and the flow resistance is also large.
4 . No thrust rotary barrel compensator, structure selection: wood pipe network project selection for the most advanced and reliable high-pressure self-sealing rotary compensator, the use of parameters range: pressure of 1.0 - 4.0MPa, the temperature of a 600C }4200C, more than this range need to be designed separately. The product structure is double sealed.