NEWS

The procedures, steps and methods for installing the bellows compensator are as follows：

1.First measure the full length of the prepared bellows compensator (including the connecting flange), draw a positioning center line for the installation of the compensator on the pipe, and draw the edge line of the compensator (to the edge of the connecting flange) according to the length of the compensator.

2.When cutting pipes by wire, the length of the flange and gasket should be considered when the flange is connected.

3.Compensator connected to the welding interface: Use a temporary support hanger to lift the compensator to the opposite interface. The interfaces on both sides of the compensator should be aligned at the same time, and spot welding should be performed at the same time. After checking that the position of the compensator is appropriate, the welding will be carried out in sequence.

4.Compensator connecting the flange interface: First temporarily install the two flange gaskets on the compensator, use the temporary support and hanger to lift the compensator up, perform the counterpart, and perform spot welding at the same time. After checking that the position of the compensator is appropriate, remove the flange bolts, remove the compensator, and weld the two flanges. After welding, clean up the welding slag, check the welding quality, and then process the internal and external welding ports after passing the test, and then lift the compensator for the formal installation of the flange.

The installation of bellows compensator should meet the following requirements：

1) The bellows compensator should be coaxial with the pipe.

2) A compensator with a flow direction mark (arrow), the direction of the arrow represents the direction of the medium flow, and must not be reversed.

3) Installation of bellows compensator.Whether the bellows compensator is welded to the steel pipe or connected to the flange, the method of post-installation is usually used.That is, when the pipeline is installed, the bellows compensator is not installed first, and the entire straight pipe is used directly at the location to be installed, and the guide bracket and fixing bracket are installed according to the design requirements and the requirements of the compensator manufacturer for the bracket setting near the compensator. After the bracket meets the design requirements, the compensator will be installed.

The metal bellows adopts GB/T12777-2008 and refers to the United States "EJMA" standard. The optimized design has the advantages of reasonable structure, stable performance, high strength, good elasticity and high degree. The material is made of 1Cr18Ni9Ti, OCr19Ni9 austenitic stainless steel, and the joints or flanges at both ends are made of low-carbon steel or low-alloy steel.

Metal bellows----The compensator is made of U-shaped waves, which are made of single and multi-layers. It has a large amount of compensation. The withstand pressure can be as high as 4MPa. The operating temperature is----1960C≤450 degrees. The structure is compact, the cost of use is low, the elasticity is good, the steelness value is low, and the fatigue life is allowed to be 1000 times. It solves the thermal expansion and contraction of the pipeline, displacement and the flexible connection between the mechanical high-frequency vibration and the pipeline, which is widely used in heat and electricity. ?Installed on power, gas, chemical and other pipelines.