The necessity of pre-operation maintenance of dismantling joints
The necessity of expansion joints in pipeline construction. As the temperature of connecting stainless steel hose or metal bellows varies greatly, the application of expansion joint is a guarantee measure. Steel expansion joints are new products for connecting facilities such as pumps, gates and pipes to pipelines. They are connected to each other according to full screws, making them integral with certain offset for easy installation. It can withstand the working pressure in the pipeline path. In this way, it can be adjusted to the site installation specifications during installation and maintenance. When operating, it not only improves the efficiency, but also has a certain maintenance effect on pumps, valves and other pipeline machinery and equipment.
Expansion joint expansion is large, bearing temperature is high, and the total force area is strong. The basic concrete pouring or pre-buried pipeline in the construction of water supply and drainage projects. In those projects, the pipeline is affected by the settlement of the foundation of the housing building, mechanical equipment resonance, geological environment changes, changes in the pipeline material, the distribution of the pipeline is gradually stressed, deformation, distortion and destruction of the pipeline. The pre-buried pipeline even cracking brings great trouble to the construction enterprises. In order to better solve this difficulty and ensure the reliable operation of pipelines, expansion joints are applied. Expansion joint:It can expand radially within a certain range and get rid of various angles of the pipeline. The pipe can also expand and contract freely in the expansion joint. Once it exceeds the amount of collecting square, it has the effect of positioning. Thus ensure the safe and reliable operation of the pipeline!
In order to better ensure the sealing and consistency of the double flange limit expansion joint and reduce maintenance, the double flange limit expansion joint shall be tested for compressive strength and sealing before installation, and the defective force transfer joint shall be repaired or replaced in many aspects. Water supply and drainage, heating and other steam-neutral substances of the force transfer joint, before installation, should be sealed check, seal check the working pressure of the pressure of 1.1 times, the working pressure of the check should be maintained during the check delay time, double flange limit expansion joint and pipe connection surface without leakage. The sealing performance of the double flange limit expansion joint is intact.
