Prince
Member
- Join Date
- Jun 2002
- Posts
- 284
My dear friends !
I hate the high pressure and I always tried to get out of that but now I am inside and there is no way out !
I am negotiating for a 350 bar pressure test machine for the pipes. Don't advice me not to touch this ****, I am in it to the neck and It is very hard to tell you why I can not get out of it !
Hydraulically speaking my normal experience with pressure is including the very ordinary lubrication units 4 bar and normal hydraulic units for the cylinders (not over 100 bar). I have worked with pressure control automatin of course. but not this high !
As always I accepted the thing that I did not know ! the problem worsen when I realized that the mechanicals even don't know nothing about the fact !
The real problem is this :
They fill the pipe with water and then they start adding pressure with a high pressure pump to 5000 psi , the pipe is fastened one side with a ram cylinder which must stand the pressure so I must synchronize the pressure of water inside the pipe and the oil for the ram. besides I must consider the leakage of the oil from the seals and also the valves. I am using siemens so I must go to the multiloop ratio control of PID control and try to synchronize two pressures.
Now here is the problem:
I know enough to know that There are a lot of things that I don't know about this machine . I wondered if anybody have an experience with a hydrotester like this or any simillar device who can advice me about.I want to know more about the proportional valves and pressure switches in high pressure.Any comment form the experienced guys would be a great help.
Please Please Help me !
I promise that I won't start a project without the needed information , I will never enter the experienced designers vicinity again !
bawling
I hate the high pressure and I always tried to get out of that but now I am inside and there is no way out !
I am negotiating for a 350 bar pressure test machine for the pipes. Don't advice me not to touch this ****, I am in it to the neck and It is very hard to tell you why I can not get out of it !
Hydraulically speaking my normal experience with pressure is including the very ordinary lubrication units 4 bar and normal hydraulic units for the cylinders (not over 100 bar). I have worked with pressure control automatin of course. but not this high !
As always I accepted the thing that I did not know ! the problem worsen when I realized that the mechanicals even don't know nothing about the fact !
The real problem is this :
They fill the pipe with water and then they start adding pressure with a high pressure pump to 5000 psi , the pipe is fastened one side with a ram cylinder which must stand the pressure so I must synchronize the pressure of water inside the pipe and the oil for the ram. besides I must consider the leakage of the oil from the seals and also the valves. I am using siemens so I must go to the multiloop ratio control of PID control and try to synchronize two pressures.
Now here is the problem:
I know enough to know that There are a lot of things that I don't know about this machine . I wondered if anybody have an experience with a hydrotester like this or any simillar device who can advice me about.I want to know more about the proportional valves and pressure switches in high pressure.Any comment form the experienced guys would be a great help.
Please Please Help me !
I promise that I won't start a project without the needed information , I will never enter the experienced designers vicinity again !
bawling