How to distinguish flexible clamp and rigid clamp of grooved pipe fittings

Flexible fixture is also called flexible fixture, which is mainly larger than rigid fixture.

2. Functional differences

The difference between a rigid clamp and a flexible clamp is that the flexible clamp will be compensated for its thermal expansion and cold contraction in the pipeline. ?

There is little difference in appearance between the clamp and the rigid (flexible) joint in groove connection, but their uses are different. Flexible joints allow the pipeline to have axial displacement and rotation angle, which makes the pipeline flexible, while rigid joints cannot. ?

The pipeline system connected by rigid clamps is rigid, that is to say, the pipeline cannot produce axial and radial displacement, and the system is not flexible. After the pipe clamp is fastened, it can form a rigid whole with the steel pipe. When the span of the hanger is large, the pipeline can be connected by its own rigid bracket. This kind of pipe fitting is mostly used to connect the riser with the general pipeline system.

Let's look at the flexible clamp again. After the joint is connected with the pipeline, the pipeline is allowed to have the axial displacement and rotation angle there. Through this pipe connection, the system can be in a flexible state. After the relatively staggered steel pipes are connected, there is a gap between the ends of the two steel pipes, leaving room for the expansion and contraction of the pipeline. The pipe clamp shall maintain normal working pressure under the condition of maximum allowable stop and dislocation. ?

3. Differences in carrying capacity

The flexible clamping joint also has the ability to bear a certain end load. There is no significant difference between rigid and flexible joints in indoor engineering, building and shopping mall pipeline construction. This difference is mainly reflected in underground engineering, and the flexible fixture is obviously superior to the rigid fixture. Because the underground pipeline faces many projects such as thermal expansion and cold contraction, line extension, skew angle, vibration and so on, these are not too big problems for the flexible fixture. ?