Square compensator is made after the completion of the center line size should meet the standard series listed size requirements. The bend tube wall surface can not have defects such as cracks, metal layered, burnt. Square compensator is the main purpose is to compensate pipeline due to high temperature and the damage to the pipeline, multi-purpose in expansion joint pipe through the structure, the seismic gap and settlement cracks in laid to compensate. Actually just look what time before installation; it won't appear any problems during installation.
1, the square expansion in set pair, should be on the platform or on flat ground group.
2, vertical installation, such as the medium for liquid, should be in the expansion of hydrophobic device with low. Expansion pipe on both sides of the first support should be in the starting point from the expansion pipe elbow bend 0.5 ~ 1 m, the activities of the holder, not a guide bracket.
3, install the expansion pipe in order to reduce the thermal stress and improve the thermal compensation ability, must to the pre-tension of expansion pipe, cold drawn, conveyed in the pipe of heat medium conveying cold medium to be cold. Pipeline of pretension or preloading should be pipe installed between two fixed bracket and fixed bracket after the connection is firm, pre-stretching or leave expansion joint in the process of the compression starting point should be greater than 2 mm, curved and expansion at the same time two arms should be stretched or compressed.
4, pipe section set a maximum distance of expansion.
5, square expansion retrenches. Square expansion should be done before installing the pre-tension. Stretching method, one kind is to open square expansion with a jack and the other is a commonly used method of tube stretcher.
6 pre-stretching joint, should choose the starting point from the expansion pipe bending advisable, 2-2.5 m place shall not be too close to the expansion pipe, cold drawn should check before cold drawn joint clearance is in line with the cold-drawn value.
7 levels when installation shall conform to the pipeline slope direction; Vertical installation, high exhaust valve, low drain valve.
8 square expansion pipe bending, the application of the whole root tube bending, such as the need for interface, the interface should be located in the middle of straight arm.
9 first stents on either side of the compensator should be in the starting point from the compensator elbow bend 0.5 lm, stents should be activities.
Compensator installation shall, in the other pipe installed between two fixed brackets. Square expansion, set is the number of designers in accordance with the requirements of engineering design, calculation parameters, construction comprehensive consideration, the number of expansion in the design of a project, type, have the corresponding technical requirements. And piping around the column is just according to the actual situation of the construction site, around the column may have a round column, there may be multiple round columns, column spacing of u-shaped bend around there may be 10 meters, and there may be 20 meters. From the installation point of view, round column only connection strength and rigor request, there is no other requirement. Production, installation requirements and square compensator is much larger than the pipe roundabout.
