Vermiculite heat-insulating fixed pipe support movable support is a pipeline support that allows relative displacement between the pipeline and the support structure. According to its structure and function, the movable support can be divided into sliding, rolling, spring, suspension and guide.
The sliding support and bracket are composed of a steel pipe bracket installed on a pipe and a supporting structure below. It bears the vertical load of the pipeline, allowing the pipeline to slide in the horizontal direction. According to the shape of the cross section of the tube holder, there are curved groove type, T-shaped bracket type and curved plate type. In the first two forms, the pipe is supported by the support, and the sliding surface is lower than the insulation layer, and the insulation layer will not be damaged. The sliding surface of the arc-shaped plate sliding support is directly attached to the pipe wall, so the heat insulation layer should be removed when the support is installed, but the pipe installation position can be lower.
The rolling support is composed of a steel pipe bracket installed on a pipe and a roller, a roller, or a ball tray provided on a supporting structure. Roller-type and roller-type bearings, when the pipeline is axially displaced, there is rolling friction between the pipe support and rolling parts, and the friction coefficient is less than 0.1; but the lateral friction of the pipeline is still sliding friction. Ball disc support, the horizontal movement of the pipe is rolling friction. Rolling bearings require necessary maintenance to keep the rolling parts in a normal state and are generally only used for overhead laying pipes. Suspension brackets are commonly used on indoor heating pipes.
Pipes are hung under the load-bearing structure with hoop and boom. The suspension bracket has a simple structure and small resistance to the expansion and contraction of the pipeline. The pipeline swings when the pipeline is displaced. Because the swing amplitude of the suspension rods of each bracket is different, it is difficult to ensure that the pipeline axis is straight. Compensator. The structure of the spring support is generally formed by adding a spring under the tube support of the sliding support or the rolling support or in the component of the suspension support. Its characteristic is to allow the horizontal displacement of the pipeline, and to adapt to the vertical displacement of the pipeline, so that the vertical load of the pipeline supported by the support does not change much.
It is often used at the place where the pipeline has a large vertical displacement to prevent the pipeline from detaching from the support, which causes excessive stress on the adjacent support and the corresponding pipe section. The guide support is a support type that only allows the pipeline to expand and contract axially and restricts the lateral displacement of the pipeline. . The structure is usually provided with guide baffles on both sides of the pipe support of the sliding support or the rolling support along the pipeline axial direction. The main role of the guide support is to prevent the longitudinal instability of the pipeline and ensure the normal operation of the compensator.