How to convert a regular valve into an electric valve
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Dear sea friends, in order to save money, the company wants to convert ordinary valves into controllable electric valves. Does anyone have experience in this area and could share their knowledge? It is best to use variable frequency control, with operation from the control room.
Hehe, actually not that much money can be saved here. You see, the modification involves more than just replacing pneumatic actuators with electric ones; it also requires various tests and the proper coordination of different components, not to mention ensuring that the explosion-proof properties are maintained.
There’s no need for modifications; just buy a new one according to the process requirements – it’s more reliable!
There’s nothing to do; just do as the boss tells us to. Does anyone have any experience to share?
Buy an electric actuator, install it at the handwheel, connect the power cable and control cable, and then make a connection in the DCS – that’s it
The last edit to this post was made by shyg0813 on 2012-1-31 at 11:47. It depends on how many valves you have; carrying out modifications in bulk might help save some money, but it won’t save any money for just one or two valves
The principle is simple, but if it were really that easy, everyone would go ahead and open factories to get rich! Or, just buy the originally manufactured ones that have been tested! Otherwise, there will be big trouble!
It’s a manual valve, and the manager wants us to do everything by hand. The general idea is to use frequency conversion to control the rotation of the handwheel. There are too many aspects involved, and I don’t know where to start. Please give me some advice. Controlling it is one thing, but how do we modify the valve? What is needed? Our manager says he’s seen this before, but I’m a bit stuck
This thing is too complicated. First, you need to know the actual torque of the valve, and then the connection dimensions between the valve body and the actuator (axis diameter, connection flanges). If even one of these details is incorrect, brackets and axes are required, which makes it very troublesome.
It sounds simple – just replace the manual mechanism with an electric actuator – but torque needs to be taken into consideration; it’s best to consult the manufacturer of electric actuators. Additionally, it’s essential to understand the mechanical connections in the transmission part.
I suggest you show our discussion link to your supervisor!