Direct Burial Corrugated Expansion Joint Mental As Customer Required For Hot Fluid Pipeline

General description

Directly buried type compensator bellows under external pressure at both ends and outer tube respectively, tube is linked together, can absorb large axial displacement, it is mainly used for directly buried steam pipeline of heat. But when used in large diameter pipe due to internal pressure force is too large, it is important to pay special attention to the strength of the fixed bracket, lest the fixed bracket collapse phenomenon during pressure test.

Directly buried outside pressure compensator of the matters needing attention

Directly buried type compensator is made of stainless steel bellows under external pressure outside a layer or multilayer wire or steel nets, both ends with joint or flange, transmission of all kinds of media used for the flexible components, its installation considerations:
1. To make the ZM burying and external pressure type compensator compensation effect, must set a fixed bracket on both ends of the compensator, prevent the pipeline from internal pressure thrust affected by offshoring.
2. ZM type buried outside one end of the pressure type compensator (one-way compensation directly buried type compensator dead end) is near the end of the fixed bracket, with live head compensation pipeline compensator.
3. According to the amount of compensation to set the distance of two fixed bracket, the compensation is generally not greater than the pipe diameter.
4. In the process of pressure testing ZM burying and external pressure typ

Directly buried outside pressure compensator structure and materials

1. The bellows: stainless steel 304, 316 l, 316, etc
2. The flange, takeover: carbon steel, stainless steel 304, 316 l, 321, etc
3. Pull rod bolt, nut: carbon steel