Effective hardware for connection and repair of polyethylene pipelines using ultrasound modification and heat shrinking. Part 5. Aspects of thermistor couplings and components used in gas-pipeline repair
Aspects of the use of effective hardware for thermistor couplings and components, which are used for thermistor welding in the repair of low- and medium-pressure polyethylene pipelines are investigated. Parameters of thermistor welding, and namely, the limiting values of the electric resistance, welding time, welding voltage, and the time required to cool the butt joints, are analyzed as a function of the diameter of the polyethylene pipelines and the type sizes of the connecting thermistor couplings or components.
KeywordsWelding Welding Time Butt Joint Thermistor Coupling Pilot Hole
- 1.M. A. Zhidkova, “Status and basic trends in the development of simulation for systems of pipeline gas transport,” Ekotekhnol. Resursosb., No. 5–6, 7–14 (1994).Google Scholar
- 2.A. N. Shestopal and V. L. Gokhfeld, “Quality assurance of welding operations during construction of gas lines fabricated from polyethylene pipes,” Svarshik, No. 2, 34–39 (1998).Google Scholar
- 3.G. G. Shishko, Operation and Repair of Gas-Supply Systems [in Russian], MP Raduga, Kiev (1992), pp. 109–110.Google Scholar
- 4.A. E. Kolosov,V. B. Lenskii, B. E. Stepanenko, and E. P. Kolosova, “Thermistor couplings for the repair of polyethylene gas pipelines. 1. Premises supporting the use of thermistor couplings for repair of polyethylene gas pipes,” Ekotekhnol. Resursosb., No. 2, 65–72 (2006).Google Scholar
- 5.O. E. Kolosov and V. I. Sivetskii, Casting of Polymer Composite Materials with the Use of Physicochemical Modifications (in two parts). Part 2. Effective Regimes and Equipment for Realizing Physicochemical Modifications [in Ukrainian], NTUU KPI, Kiev (2006).Google Scholar