Manual vent valves adjacent to each safety valve
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When feeding into the device’s inner container, the system pressure will increase. Attention should be paid to releasing some nitrogen through the manual vent valves bypassing each safety valve, in order to maintain the system pressure at …. The pressure in the system will increase when streams are introduced into the vessels in the plant. Care should be taken to vent some of the nitrogen using the manual vent valves on all the safety valve bypasses, in order to maintain the system pressure at around 3 kgf/cm2 or higher. This is my own translation of the concept related to bypasses; I think it’s not accurate, so I hope experts can help. As for feeding during the initial startup process, well… ! This post was last edited by niulijun117 on 2009-3-11 08:51.]
Bypass can be translated in two ways: by-pass or side stream. By-pass means bypassing a certain facility, while side stream refers to an auxiliary flow path. For safety valves, I think by-pass is the better choice.
Agree with the person above. By-pass is fine; by-path can also be used.
When feeding into the device’s inner container, the system pressure will increase. Attention should be paid to releasing some nitrogen through the manual vent valves bypassing each safety valve, in order to maintain the system pressure at …. Putting aside the English for now, I think there’s a problem with the design! Does the container (system) lack pressure balance or pressure control pipelines? If manual exhaust is required during feeding, does that mean manual air supply is needed during discharging? In that case, isn’t it quite troublesome to operate, and also unsafe?
1. Here, ''by-pass'' can be used. 2. The phrase “in order to…” was not translated; partial should not be used for referring to nitrogen in this context. Additionally, “it should be noted” can be translated literally as follows: In order to maintain the system pressure at *** barg, part of nitrogen may be discharged through manual vent valves located on the by-pass pipes of the safety valves.
The pressure in the system needs to increase when feed is introduced into the vessels. Care should be taken to vent excess nitrogen using the manual vent valves on all safety valve bypass circuits, in order to maintain the system pressure at around 3 kgf/cm2G
The container (system) lacks pressure balance or pressure control pipelines. Continuous feeding with manual nitrogen discharge (through a safety valve); the operation is simple and safe. This nitrogen is used for protection purposes only, and it is not feed gas or anything else, so there is no need to introduce additional gas. Last edited by niulijun117 on 2009-3-11 08:49.]
By-pass is used quite a lot, right?
Hehe, it’s the same; both are bypasses
by-pass: bypass; side passage; flow detour tube; alternate route. By-pass line: alternative path; bypass pipeline; branch pipeline
During the preheating process of the recovery tower, the system pressure is maintained at..... by operating the manual vent valve connected to the safety valve bypass of the methanol vapor-liquid separation tank.
The technical process of an LNG station is briefly introduced. Then, the author presents his own opinions regarding aspects such as the placement of the vent pipe and the installation of a bypass path next to the solenoid valve, for storing LNG with different compositions as well as to prevent cooling effects and water hammer. The process flow of an LNG station is briefly explained, after which the author offers personal insights on the placement of the vent pipe, the use of a bypass near the solenoid valve, the storage of LNG with various compositions, and methods to avoid sudden cooling and water hammer. There are also those for pre-travellers.