Discussions related to expanders – the essence is really good; I’ll save it to read slowly!

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This post was last edited by hxm2087 on 2012-1-3 at 14:43. 1. Regarding the speed of the turbine expander: https://bbs.hcbbs.com/viewthread.php?tid=950758&highlight=%C5%F2%D5%CD%BB%FA 2. Images of the damaged bearings in the expander: https://bbs.hcbbs.com/viewthread.php?tid=949209&highlight=%C5%F2%D5%CD%BB%FA 3. A photo of the replaced expander impeller: https://bbs.hcbbs.com/viewthread.php?tid=949262&highlight=%C5%F2%D5%CD%BB%FA 4. Images of the expander maintenance work for everyone’s review. https://bbs.hcbbs.com/viewthread.php?tid=862297&highlight=%C5%F2%D5%CD%BB%FA 5. Why must the heating gas for the expander be introduced at the outlet? https://bbs.hcbbs.com/viewthread.php?tid=947437&highlight=%C5%F2%D5%CD%BB%FA 6. User manual for the booster turbine expander (from Hangyang). https://bbs.hcbbs.com/viewthread.php?tid=912896&highlight=%C5%F2%D5%CD%BB%FA 7. What are the conditions for increasing the cooling capacity of an expander? https://bbs.hcbbs.com/viewthread.php?tid=947896&highlight=%C5%F2%D5%CD%BB%FA 8. What kind of pressure does the clearance pressure of an expander refer to? https://bbs.hcbbs.com/viewthread.php?tid=947071&highlight=%C5%F2%D5%CD%BB%FA 9. After the expander stops operating, the standby unit cannot be started either – what should be done? https://bbs.hcbbs.com/viewthread.php?tid=946923&highlight=%C5%F2%D5%CD%BB%FA 10. When is the best time to start the expander during the startup of an air separation unit? https://bbs.hcbbs.com/viewthread.php?tid=787582&highlight=%C5%F2%D5%CD%BB%FA 11. What is the typical pressure level of the gas coming out of the molecular sieve before it enters the booster-type turbine expander? https://bbs.hcbbs.com/viewthread.php?tid=945451&highlight=%C5%F2%D5%CD%BB%FA 12. Training materials on expanders https://bbs.hcbbs.com/viewthread.php?tid=912712&highlight=%C5%F2%D5%CD%BB%FA 13. What are the emergency procedures to follow after an expander stops operating suddenly? https://bbs.hcbbs.com/viewthread.php?tid=942162&highlight=%C5%F2%D5%CD%BB%FA 14. Settings for air separation unit expanders https://bbs.hcbbs.com/viewthread.php?tid=943148&highlight=%C5%F2%D5%CD%BB%FA 15. Summary of accidents involving turbine expanders in air separation units https://bbs.hcbbs.com/viewthread.php?tid=934771&highlight=%C5%F2%D5%CD%BB%FA 16. What are the reasons for large fluctuations in the shaft vibration of an expander? https://bbs.hcbbs.com/viewthread.php?tid=938603&highlight=%C5%F2%D5%CD%BB%FA 17. Does anyone have any on-site photos of booster-type turbine expanders? https://bbs.hcbbs.com/viewthread.php?tid=783415&highlight=%C5%F2%D5%CD%BB%FA 18. How is the critical speed of a turboexpander determined? https://bbs.hcbbs.com/viewthread.php?tid=935331&highlight=%C5%F2%D5%CD%BB%FA 19. The temperature drop during throttling expansion and expansion by expanders is limited; how is air liquefied in air separation units? https://bbs.hcbbs.com/viewthread.php?tid=938141&highlight=%C5%F2%D5%CD%BB%FA 20. Under what conditions does the temperature control valve after the expander come into play? https://bbs.hcbbs.com/viewthread.php?tid=934157&highlight=%C5%F2%D5%CD%BB%FA 21. Liquid in the expander https://bbs.hcbbs.com/viewthread.php?tid=922926&highlight=%C5%F2%D5%CD%BB%FA 22. What is the impact on air separation if the expander stops suddenly? https://bbs.hcbbs.com/viewthread.php?tid=926257&highlight=%C5%F2%D5%CD%BB%FA 23. Some pictures of the expansion engine’s assembly https://bbs.hcbbs.com/viewthread.php?tid=816089&highlight=%C5%F2%D5%CD%BB%FA 24. How to handle an emergency when an internal compression air separation expansion engine stops suddenly https://bbs.hcbbs.com/viewthread.php?tid=911770&highlight=%C5%F2%D5%CD%BB%FA 25. Frosting on the expansion engine https://bbs.hcbbs.com/viewthread.php?tid=918258&highlight=%C5%F2%D5%CD%BB%FA 26. Structural diagram of the expansion engine https://bbs.hcbbs.com/viewthread.php?tid=926514&highlight=%C5%F2%D5%CD%BB%FA 27. Strange phenomena related to the expansion engine https://bbs.hcbbs.com/viewthread.php?tid=920390&highlight=%C5%F2%D5%CD%BB%FA 28. The issue where the expansion engine’s speed gauge shows fluctuating values in high temperatures https://bbs.hcbbs.com/viewthread.php?tid=920822&highlight=%C5%F2%D5%CD%BB%FA 29. A problem with the flow passage of the expansion engine https://bbs.hcbbs.com/viewthread.php?tid=919978&highlight=%C5%F2%D5%CD%BB%FA 30. Photos of the expansion engine https://bbs.hcbbs.com/viewthread.php?tid=813705&highlight=%C5%F2%D5%CD%BB%FA 31. The problem of the expansion engine running in reverse https://bbs.hcbbs.com/viewthread.php?tid=911782&highlight=%C5%F2%D5%CD%BB%FA 32. Pictures of the expansion engine https://bbs.hcbbs.com/viewthread.php?tid=892564&highlight=%C5%F2%D5%CD%BB%FA 33. Issues related to starting up the expansion engine https://bbs.hcbbs.com/viewthread.php?tid=908792&highlight=%C5%F2%D5%CD%BB%FA 34. Have you ever seen a liquid expansion engine? https://bbs.hcbbs.com/viewthread.php?tid=878085&highlight=%C5%F2%D5%CD%BB%FA 35. When the pressure after the expander is 5 kilograms, what outlet temperature is safe? https://bbs.hcbbs.com/viewthread.php?tid=906889&highlight=%C5%F2%D5%CD%BB%FA 36. Starting an expander-based refrigeration system https://bbs.hcbbs.com/viewthread.php?tid=907613&highlight=%C5%F2%D5%CD%BB%FA 37. Working principle of a booster turbine expander https://bbs.hcbbs.com/viewthread.php?tid=907662&highlight=%C5%F2%D5%CD%BB%FA 38. What percentage of liquid is produced by a liquid expander? https://bbs.hcbbs.com/viewthread.php?tid=897243&highlight=%C5%F2%D5%CD%BB%FA 39. How can we ensure that the expansion end and the booster end of the expander are in a balanced state to reduce vibration? https://bbs.hcbbs.com/viewthread.php?tid=896613&highlight=%C5%F2%D5%CD%BB%FA 40. Training materials on expanders https://bbs.hcbbs.com/viewthread.php?tid=898151&highlight=%C5%F2%D5%CD%BB%FA 41. Warming up after the expander is stopped https://bbs.hcbbs.com/viewthread.php?tid=897324&highlight=%C5%F2%D5%CD%BB%FA 42. What is the function of the interlock between the gap pressure and the outlet pressure difference in a booster expander? https://bbs.hcbbs.com/viewthread.php?tid=877406&highlight=%C5%F2%D5%CD%BB%FA 43. Issues with the expansion engine oil pump https://bbs.hcbbs.com/viewthread.php?tid=818314&highlight=%C5%F2%D5%CD%BB%FA 44. What is the relationship between the nozzle and the check valve during the operation of the expansion engine? https://bbs.hcbbs.com/viewthread.php?tid=833662&highlight=%C5%F2%D5%CD%BB%FA 45. Why do expanders tend to overspeed during hot startup? https://bbs.hcbbs.com/viewthread.php?tid=891059&highlight=%C5%F2%D5%CD%BB%FA 46. What is a pressurized turbine expander? https://bbs.hcbbs.com/viewthread.php?tid=572574&highlight=%C5%F2%D5%CD%BB%FA 47. Automatic shutdown of the expander https://bbs.hcbbs.com/viewthread.php?tid=765097&highlight=%C5%F2%D5%CD%BB%FA