electro-mechanical solenoid for an old steam turbine driver pump
electro-mechanical solenoid for an old steam turbine driver pump
(OP)
I am working on a project to install pump/driver trip systems on about 350 pumps based on measurement of high pump vibration. The one pump in question for me has a steam turbine driver (which prevents us from simply splicing into the motor start/stop switch to stop the pump as I am doing with most others in the project). The steam turbine is old enough that the manufacturer does not have a low-cost readily-available solution – their offered solution was overly complex and very expensive. Therefore, we felt that it would be more cost-effective to engineer our own.
Our little joint side-job in this larger project is to devise a simple system which accepts an electrical signal from the pre-engineered “to-be-installed” vibration detection module, and mechanically pulls on the external trip-lever of the steam-turbine. We can likely make use of one of several available options of electro-mechanical solenoid, so it may just be as simple as designing a suitable mounting bracket.
My puzzling is how to devise a simple system, your suggestions would be appreciated.
Thanks,
Our little joint side-job in this larger project is to devise a simple system which accepts an electrical signal from the pre-engineered “to-be-installed” vibration detection module, and mechanically pulls on the external trip-lever of the steam-turbine. We can likely make use of one of several available options of electro-mechanical solenoid, so it may just be as simple as designing a suitable mounting bracket.
My puzzling is how to devise a simple system, your suggestions would be appreciated.
Thanks,





RE: electro-mechanical solenoid for an old steam turbine driver pump
For Elliott YR turbines, an electric solenoid is positioned above the trip. I have attached sketch of that arrangement.
For Dresser (Turbodyne, Worthington) turbines, they use a spring loaded pneumatic actuator. If the turbine uses circulating lube oil, it is actuated with lube oil pressure. If the turbine has no circulating oil system, it uses instrument air with an electronic solenoid to bleed off the air pressure. I will try to find a drawing of that mechanism.
Johnny Pellin
RE: electro-mechanical solenoid for an old steam turbine driver pump
Thank you again
RE: electro-mechanical solenoid for an old steam turbine driver pump
Johnny Pellin
RE: electro-mechanical solenoid for an old steam turbine driver pump
Johnny Pellin
RE: electro-mechanical solenoid for an old steam turbine driver pump
How about if I add the actuator on the control valve, please find the attached draft.
Thanks again for your help.
RE: electro-mechanical solenoid for an old steam turbine driver pump
Johnny Pellin
RE: electro-mechanical solenoid for an old steam turbine driver pump
Thanks for your information.
I took some pictures in the field. No control valves. The drive trip is assemble of plug valve and butterfly valve. Please see the picture, we need a signal to trigger the action of "pull up" on a lever.
The Elliot Hatchet should be working, the other option is a simple lever with solenoids. A structure needs to be created, in order to avoid blocking the "busy area", the mechanism can be anchored either on the top of the structure or side of the structure.
I tried to contact Elliot Group for the genetic dimensions of their Hatchet assemble (with a solenoid), but failed. It would be the easiest way to modify and install the Elliot Hatchet assemble. Any suggestions
RE: electro-mechanical solenoid for an old steam turbine driver pump