With the development of the economy and the increasing global demand for the environment, high-energy-consuming small thermal power plants will gradually exit the heating market. The existing large units are far from the heat load centers and can only transport high-temperature and high-pressure steam to various users through long-distance pipelines. Due to the long transportation distance, high pressure and temperature, and large number of users, the pipeline layout will also become more complex and changeable. In order to save the cost of pipeline engineering, in addition to exceeding In addition to long straight pipe sections, for more complex pipe sections, rotary compensators can be selected based on the height difference of the terrain and the horizontal turning of the pipeline.
The structure of a single product is simple. Generally, it is composed of 2 to 3 rotary compensators (preferably 2), a coupling force arm short pipe,4 90° elbows and 1 to 2 small-angle elbows to form a compensation structure. Although the cost of this combination increases, the compensation capacity will also increase accordingly, usually equivalent to 2 to 3 times that of an axial bellows compensator. The greatest advantage is that it is assembled from thick-walled pipe fittings forged or welded by precision turning, which has a higher structural strength and is safer and more reliable for transporting high-temperature and high-pressure steam.