Influence of gas parameters alternation on the form of gas-flow-impact appearing in long transportation pipelines

• Autorzy: Próchnicki W. , Dzida M.
• Języki publikacji: EN

Abstrakty

EN

In the case of the gate-valve cut-off, in a very long transmission pipelines, considerable pressure overshoots are observed accompanying the gas flow impacts, caused as well by shock wave as by reflected one. The main factor, influencing the shock wave amplitude, is the velocity of gate-valve closing, determined by the servomotor-time-constant Ti. Because of possible variations of chemical constitution of gas transported through the pipeline - which renders physical, chemical and thermodynamic properties changes, it is necessary to examine theirs degree of influence on the processes of dynamic impact.

Słowa kluczowe

EN

gas flow dynamics; automatic control

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN
• Czasopismo: Transactions of the Institute of Fluid-Flow Machinery
• Rocznik: 2003
• Tom: nr 114
• Strony: 77--90
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Próchnicki W.

• Gdańsk University of Technology, Faculty of Ocean Engineering and Ship Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland

autor

Dzida M.

• Gdańsk University of Technology, Faculty of Ocean Engineering and Ship Technology, Narutowicza 11/12, 80-952 Gdańsk, Poland

Bibliografia

• 1. Klimacki Z., Orlikowski C.: Theoretical investigation of the supply presure influence on long-line dynamics, IFFM Bull., No. 142/837a/1975, (in Polish).
• 2. Klimack Z., Orlikowski C.: Analysis of the influence of long hydraulic line parameters on dynamics of automatic control system IFFM Bull No. 144/808/1975, (in Polish).
• 3. Polish Standards The strearn flow measure, using reducers PN-65/M-53950 (in Polish)
• 4. Próchnicki W.: An analysis of the influence of the simplifications of an interstage reheater model on the dynamic characteństics of steam turbine otttput, Archives of Energetics, No. 3-4, 1986, (in Polish).