Wyniki wyszukiwania - BazTech

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Wpływ wielkości uszkodzeń rurociągów na możliwość zastosowania wewnętrznych wykładzin naprawczych typu CIPP

Abel Tomasz, Gut Remigiusz, Jasiński Wiktor

Materiały Budowlane

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2023

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nr 5

47--50

PL

W artykule przedstawiono analizy dotyczące możliwości stosowania technologii CIPP (Cured in place pipe) do renowacji rurociągów pozostających w stanie niezakłóconego przekroju kołowego oraz uszkodzonych mających liczne imperfekcje. Przedstawiono wyniki badań laboratoryjnych wpływu zmian geometrycznych przekroju poprzecznego i uszkodzeń liniowych kanału poddawanego renowacji na parametry wytrzymałościowe układu rurociąg - wykładzina CIPP. Wyniki potwierdzają konieczność prowadzenia dokładnej, indywidualnej analizy uszkodzeń i geometrii rurociągu przed poddaniem go renowacji.

EN

The article presents analyzes on the possibility of using the CIPP (cured in place pipe) technology for the renovation of pipelines with an undisturbed circular cross-section, damaged and with imperfections. The results of laboratory tests on the influence of the shape of the cross-section and linear damages of the sewer subjected to renovation on the strength parameters of the pipeline system - CIPP liner are presented. The results confirm the need for individual analysis of damage and pipeline geometry before renovation.

2

Load condition analysis of pipe flange connection with gasket flat gasket and loose clamping rings

Wróbel Gabriel, Walczak Kazimierz

Journal of Achievements in Materials and Manufacturing Engineering

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2022

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Vol. 111, nr 1

5--17

EN

Purpose: This paper describes the study of the connection with loose fixing composite rings of pipe flanges. The elastic properties of the joint components - gasket, pressure flanges, rings and fixing bolts were determined experimentally. Design/methodology/approach: The criterion of joint tightness was formulated. The constructed model was used to determine the analytical dependence of the joint leakage pressure on the assembly torque of bolts tightening. The correctness of the model was confirmed by the agreement of the analytical results with the experimental results. Findings: Quantitative characteristics were determined for the selected type of joint. Practical implications: The formulated conclusions indicate the possibility of using the model to support the design process and to select the structural parameters of the joint meeting the operational requirements and safety criteria. Originality/value: Produced with recycled materials using.

3

The Effects of Calcium Carbonate Filler on HDPE Pipe

Kherici Samira, Benouali Djillali, Nouredine Chekhar

Advances in Science and Technology. Research Journal

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2022

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Vol. 16, no 3

213--218

EN

The objective of this work is the preparation and the characterization of high density polyethylene /calcium carbonate (HDPE/CaCO3) composites. Polyethylene composites, containing 10-35 wt. % of CaCO3 and HDPE with MFI (Melt Flow index) (0.550 g/10mn) were prepared with co-extrusion process using extruder type Cincinati 90D. Thermal and mechanical studies were made in order to determine the parameters for obtaining a material (corrugated pipe) with optimal properties. The composite viscosity increased with filler content, suggesting the formation of filler agglomerates. Thermal analysis shows that addition of 30 % CaCO3 increased the thermal stability of HDPE around 32°C, decreasing the processing temperature of composites in 15°C. Regarding to the mechanical tests, the ring stiffness of the composites decreased with the addition of CaCO3. According to the obtained results, we suggest that HDPE/CaCO3 composites could be used in the pipe production where tensile strengths higher than 25 MPa are not required and for service temperatures between 30°C and 70°C.

4

Wpływ temperatury na sztywność obwodową rur z PCW

Orlik A., Wysocki L.

Instal

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2005

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nr 12

17--18

PL

W pracy omówiono wyniki badań wpływu temperatury na sztywność obwodowa rur z PCW. Dokonano analizy wpływu zmian sztywności obwodowej wywołanej zmianą temperatury na ugięcie rur w kanalizacji grawitacyjnej. Wskazano na konieczność uwzględniania na etapie projektowania wpływu podwyższonych wartości temperatury na ugięcia rur.

EN

Results of research on influence of temperature on PVC pipe ring stiffness has been presented in the paper. Analysis of influence of ring stiffness and temperature change on deflection of pipes has been performed herein. Necessity of introducing deviations due to temperature changes in the pipe design procedure nas been stated as a conclusion.