Since we started driving, let’s talk about the rationalization reforms and suggestions for our own turbines, compressors, etc.! ! (Actively participate to earn high-score rewards)

It’s more about the integration and routing of those critical and commonly used small pipelines within the unit; for example, the drain and condensate systems in the turbine casings of Hangzhou Steam Engines, as well as the pressure tapping pipes, intake pipes, and the layout of important valves are all poorly designed. Once insulation is added, it becomes impossible to tell where each pipe goes. Some valves need to be lifted into the air in order to be opened, and the lack of proper design for the reverse pump pipeline in Hangqi’s screw compressor oil pumps is a serious problem. Shenggu also has such issues; their work is not thorough or reliable. Other major problems aren’t even worth mentioning, after all, the technology used by these domestic equipment manufacturers comes from abroad. While they claim to have absorbed and developed it, in reality it’s simply a case of successful imitation. The innovation capability is extremely poor, and there is no real focus on research and development as well as innovation.

I came across a 3-stage booster pump made by Shengyu; one of the shaft ends was actually broken, and it was repaired later (it was during its first maintenance). It’s surprising that such a machine could still leave the factory – using some equipment produced in China is indeed worrying. Also, the shaft seals on the Hangzhou Steam Engines are all of the flat-tooth type. Why wasn’t a design with high and low teeth used? Both of our Hangzhou Steam Engine units are currently leaking steam

For pressure tapping pipes and Dalin hydrophobic pipes, the same is true for compressors imported from abroad – insulation materials are not available in packs. It is necessary for us to label these items carefully during installation. Labeling pipes, valves, instruments, etc. is a very important task; although it seems simple, it has significant implications. Regarding compressors used in China, I think the quick-shut valve assemblies need improvement; I’m not sure if Hangqi has made any improvements yet. Regarding the pipeline layout, these issues should be addressed by examining the pipeline layout diagrams in advance; improvements should be made promptly. Equipment installation requires the involvement of process engineers who must be ready to resolve any problems that arise. Process engineers need to take a leading role, and any pipelines that can be modified should be altered.

This is more evident in the work carried out during the equipment construction phase; at that time, the process engineers are busy studying the process PID diagrams, as well as the operating principles and manuals. Not many people truly understand the equipment in detail, and there are even common issues associated with it. Those who worked on the equipment during the construction phase later move to departments such as the equipment engineering department. Those responsible for operation either lack the necessary awareness or are not given enough importance. I think the most important thing is for the manufacturers to be more detailed when producing the drawings; otherwise, when construction begins, they will surely go with the simplest approach possible. As for improvements to quick-close components, are there any such developments known in China at the moment? I heard from the staff at Hangzhou Automobile that the components of the quick-shut assembly are all imported, and it is likely that Hangzhou Automobile is responsible for the design of its assembly process. So far, there don’t seem to be any reports of any improvements made in this regard.

Speaking of modifications, there was such a crazy thing done: a originally imported centrifugal compressor that came online in January 1996 (with a capacity of 12,000 standard cubic feet per hour; it was imported for nearly $500,000 in 1995). In 2000, its control system was completely removed, leaving it as a bare machine, and custom logic was developed using DCS to achieve automatic control, allowing it to operate safely to this day. During the renovation, foreign manufacturers refused to provide any services or advice; I relied entirely on my youth and boldness at that time. . . I definitely wouldn’t dare now. . . However, it was only later that it became fully clear that the reason for deciding to make those changes at the time was actually a misunderstanding. . . I haven’t heard of anyone else doing this. . . ;P