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Bellows compensators shall not be installed in piping systems with radial displacement

Time: 05-24 󰃯 Reading times: 228 󰃳 Editor in charge: The sea 󰃗 Column: product focus

Introduction: Of course, if the design of corrugated pipe network has not been properly designed, it will not have a great impact on the design of pipeline network

In the pipeline network design, the on-site construction status of the heating pipe network will not be the same as the design in most cases. It is forced to make a lot of specific design changes. If the compensation pipeline is properly solved, it will not have a great impact on the selection of radial bellows Compensator Corrugated compensator Many construction units do not fully understand this issue.
After the pipeline is changed, some fixed supports are changed from not bearing pressure torsion to bearing pressure torsion or causing great bending moment. The supporting structure of guide support has changed greatly. Improper treatment can easily damage the fixed support and cause accidents.
The degree of construction unit is different, the key is to operate the overall layout of heat supply network by design enterprises. When the pipeline changes greatly, it is necessary to pay attention to whether the support mode of the pipeline conforms to the basic principle of corrugated compensator layout. According to the reasonable section, ensure that the pipeline is in a straight line, and control the inflection point to reduce the bending moment and side torque acting on the fixed support and guide bracket, so as to ensure the rationality of the pipeline.
This is the key to the design staff. In addition to the continuous accumulation of experience, the established design concept must be produced to improve the design level of the compensator pipeline. Corrugated compensator is a new technology pipeline and a key component of equipment system. There are many kinds of bellows compensators. How to use corrugated compensator correctly and consider the requirements of piping and equipment system is not a simple thing to complete a certain life cycle and keep pace with the whole process system. All levels of design, manufacturing, construction and maintenance need to fully understand and grasp the performance of various corrugated compensators. The same process, different construction technology and different construction standards can be achieved for the corrugated compensator. All negligence in the connection will harm its use, even lead to its fatal harm and lose its normal effect, which will produce adverse consequences for production. Reduce the pressure change of bellows compensator. When the working displacement is close to its rated displacement, the key factor determining the service life of the compensator is the displacement in operation;
Once the displacement is free, such as the pre deformation of the bellows compensator, the change of pressure is the decisive factor of the service life of the bellows compensator. Usually, due to the requirements and limitations of process standards, the pressure controllability of compensator is not strong in design and installation level, and it can not be operated in most cases. However, in some cases, the pressure standard of the bellows compensator can be changed according to the process design to increase the service life of the compensator. For example, at the hot air riser of blast furnace hot blast stove, the corrugated compensator was used to be installed near the hot blast stove side, and the thermoelectric air valve was installed on the side of the hot air director. If the thermoelectric air valve is installed on the side near the hot blast stove, and the corrugated compensator is installed on the side of the hot air main pipe, the stress state of the corrugated compensator will change greatly.
The force of the former corrugated compensator changes regularly with the pressure change of the furnace burning and exhaust air of the hot blast stove; the pressure of the latter corrugated compensator is always the same as that of the hot air director, and the pressure foundation is stable during normal production, so the fatigue frequency can be reduced and the service life can be increased.