How to do a hydraulic valve model (valve of mud pump)?

Hello everyone,

I am trying to do predictive maintenace of triplex mud pump. I have to use vibration sensor( similar to Transmission System Model in Matlab.) to detect swab failure from vibration data.I have to place the vibration sensor on the mupump as shown in below figure. How I can create a simulink model of the valves?

This is the valve. How to model this??

Any help will be highly appreciated.

Thanks in advance.

Thanks and regards,

Aleena N A

[Sam Chak]

Hi @aleena n a

Are you looking for a methematical model like ODE that describes the nonlinear characteristics of the valve?

Or, you are asking how to model that valve in SimScape?

[aleena n a]

Hai@Sam Chak

I am not sure about that. I wanted the model for predictive maintenace. I have to place at the portions marked as black in the figure.

Which will be good?ODE or SimScape?

Answer 1

[Sam Chak]

Hi @aleena n a

I'm unfamiliar with the triplex mud pump. However, there are various types of valves for fliud flow control in the Simscape library.

https://www.mathworks.com/help/physmod/hydro/valves-hyd.html

The easiest way would be select the relevant valve blocks, and then set the parameters that are usually determined by the type of working fluid (in this case, the mud). The nonlinear characteristics of the valves are also specified in the documentation of each valve.

What are the requirements for modeling a predictive maintenance system?

[aleena n a]

Hi @Sam Chak

The requirements that I think are, a simulink model, the input and output parameters which are being considered for prediction, fault generation etc.

I am new to this area.

[Sam Chak]

Hi @aleena n a

Your task is a model-based design using Simulink. Without any mathematical model, there is nothing much you can do. Perhaps you can try listing out all governing equations related to the following:

• triplex mud pump
• hydraulic valve
• preventive maintenance system

Also check out some examples in

https://www.mathworks.com/help/physmod/hydro/directional-valves-hyd.html