【Q&A Question 039】2018.02.08
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【Q&A Question 039】February 08, 2018: Does the hydrogen feed pump have a minimum flow rate line? Why set this line? Yes; it ensures that the pump does not suffer from cavitation or damage to its internal components under low-flow operating conditions, while also guaranteeing smooth operation of the pump. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Due to the limitations on the number of posts in the “One Question per Day” section, “One Image per Day” has been moved to the registered devices section; you can access it through the directory I posted. For management purposes, if you need to access content from a few days ago, please go to the summary post below to enter the “My Registration Season” event – (Note: This event is currently underway in the Chemical Engineering section). https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=18978 For the daily questions section related to chemical engineering technology training in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888971 For the daily image summary section related to registration equipment in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888970 For the Q&A section related to hydrogen production and hydrogenation technologies in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888968 For the daily questions section related to LNG technology in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888973 For the Q&A section from 2017 (updates have started): https://bbs.hcbbs.com/thread-1657793-1-1.html For the daily questions section from 2017 (updates have started): https://bbs.hcbbs.com/thread-1657794-1-1.html For the daily image summary section from 2017: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1875160 For the list of daily questions related to LNG in 2017: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1804162 For the Q&A section from 2016 (updates are complete): https://bbs.hcbbs.com/thread-1597792-1-1.html
This post was last edited by Chizixincheng on 2018-2-8 at 11:04. Yes, the reasons are as follows: when operating at low flow rates, cavitation is likely to occur in high-pressure pumps； An increase in the temperature of the pump bearings is not conducive to the long-term safe operation of the pump. Setting a minimum flow rate line can prevent or reduce the occurrence of such accidents
Yes; it ensures that the pump does not suffer from cavitation or damage to its internal components under low-flow operating conditions, while also guaranteeing smooth operation of the pump.
Yes; it ensures that the pump does not suffer from cavitation or damage to its internal components under low-flow operating conditions, while also guaranteeing smooth operation of the pump.
Yes, setting a minimum flow rate line can prevent pump stalling.
There is a minimum flow line! Because it operates at low flow rates, the high-pressure pump may experience the following problems: ① An increase in temperature, along with an increase in the saturated vapor pressure of the liquid, which leads to intensified cavitation. ②As the temperature rises, the rotor temperature increases accordingly, leading to wear. The installation of a minimum flow control valve ensures the economic efficiency and safety of the feed pump during long-term operation.
This post was last edited by hesonchang214 on 2018-2-8 at 11:20. It ensures that the pump does not suffer from cavitation or damage to its internal components under conditions of low flow rates, while also guaranteeing smooth operation of the pump
Yes; it ensures that the pump does not suffer from cavitation or damage to its internal components under low-flow operating conditions, while also guaranteeing smooth operation of the pump.
Answer: Yes; it ensures that the pump does not suffer from cavitation or internal component damage under low-flow operating conditions, while also ensuring smooth operation of the pump.
The hydrogen feed pump has a minimum flow rate limit; operating at low flow rates can cause the high-pressure pump to experience the following problems: ① An increase in temperature, along with an increase in the saturated vapor pressure of the liquid, which leads to intensified cavitation. ②As the temperature rises, the rotor temperature increases accordingly, leading to wear. The installation of a minimum flow control valve ensures the economic efficiency and safety of the feed pump during long-term operation.