oleodynamic valve design

[DeltaS4]

hi fishing I read only now the discussion, I have some notions (although basic) concerning fluid automation and construction of valves, even of solenoids. If you may be useful, ask yourself a few questions, and if you know something, I will share it:biggrin:. Hi.

 

[pesca]

Hello delta.. , thank you for your concern.
Look, more than anything, I need a technical shoulder that gives me a hand.
to get into this adventure.
I have a minimum knowledge of matter
If you're a little educated on the solenoids, we could make four snails.
Hi.
fabio

 

[DeltaS4]

look for the shoulder, do not look at me:biggrin:, at least for the moment, that I am scanned between thesis and other things to do, regarding the chat we begin to throw up a little things:biggrin:

Then: It is necessary to distinguish the solenoids that are to be used for digital valves (on/off), by the servo - solenoids of some servovalves.
for the moment we begin with the first, the electric circuit is schematized as a resistance and inductance put in series.
constructively it would be a wire wrapped on a ferromagnetic cylinder, the magnet phosphate that explicates the solenoid would be f = n* i, where n is the number of coils and the current. now from the law of hopkinson, letting go, you have that
# I'm phi * r where phi is the magnetic flow and r is the reluctance of the magnetic circuit.
Let's talk about reluctance:
it depends on the magnetic permeability and the surface on which the flow acts. as regards the practical aspect, the circuit works with variable reluctance, because the latter varies with the variation of x, which in conclusion entails a trend of the current a little particular. This particularity allows you to see even when the valve opens and closes. As soon as I have 5 min I do a sketch about this and we continue the speech. :smile:

 

[pesca]

Hello delta,
Thanks for the info, but it seems a bit too complex to describe it
with four/five.... post.
also because to propose something on the market as first you should
to know what the needs of users are, problems to face and
have a minion of practical experience on the field.
However from what the solenoids for hydraulic applications are divided
in on/off and proportional (I do not know if you correspond to servant )
Thanks again for the interest!
hello and good evening

 

[Er Presidente]

look for the shoulder, do not look at me:biggrin:, at least for the moment, that I am scanned between thesis and other things to do, regarding the chat we begin to throw up a few things

Then: It is necessary to distinguish the solenoids that are to be used for digital valves (on/off), by the servo - solenoids of some servovalves.
for the moment we begin with the first, the electric circuit is schematized as a resistance and inductance put in series.
constructively it would be a wire wrapped on a ferromagnetic cylinder, the magnet phosphate that explicates the solenoid would be f = n* i, where n is the number of coils and the current. now from the law of hopkinson, letting go, you have that
# I'm phi * r where phi is the magnetic flow and r is the reluctance of the magnetic circuit.
Let's talk about reluctance:
it depends on the magnetic permeability and the surface on which the flow acts. as regards the practical aspect, the circuit works with variable reluctance, because the latter varies with the variation of x, which in conclusion entails a trend of the current a little particular. This particularity allows you to see even when the valve opens and closes. As soon as I have 5 min I do a sketch about this and we continue the speech. :smile:

Go slower!!! !
:smile:
I'm old!

p.s.: subvoice, the "bobbina" that de?
:biggrin:

 

[Meccbell]

The theory is fine, but it must be supported with practice.
or, do the Chinese of the situation: buy an electrovalve (maximum 50 euros), disassemble the coil and go from a good winder (those that make or repair the transformers, the electric motors and, in fact, the coils) and feed it to him.
will tell you life, death, miracles and beatification (or curse) of the above-mentioned coil, including how much it comes to coast the wrapping part and especially how much the cost can vary by virtue of the fluctuations of the price of copper.

However, I return to repeat what I said a few posts ago: or you have an idea, or rather the idea, that detaches from a palm the competition, or the certainty is to enter a market that is now fruit.
Let the coils, drawers, shutters and other chincaglieria from a few cents and concentrate, if there are the conditions, on the innovative part of what you want to do.

 

[DeltaS4]

Go slower!!! !
:smile:
I'm old!

p.s.: subvoice, the "bobbina" that de?
:biggrin:

:biggrin:

The theory is fine, but it must be supported with practice.
or, do the Chinese of the situation

However, I return to repeat what I said a few posts ago: or you have an idea, or rather the idea, that detaches from a palm the competition, or the certainty is to enter a market that is now fruit.
Let the coils, drawers, shutters and other chincaglieria from a few cents and concentrate, if there are the conditions, on the innovative part of what you want to do.

fully agreed, I just wanted to give some info of theory to fishing.
on the fact that the sector is saturated I give you fully right, they no longer know what to invent to sell those four valves whose technology is practically always the same, if it happens is only a copy of the various producers with some intamarriage of the object:biggrin:


Unfortunately at the moment I have to abandon this, I am too messed up with the thesis

Good day

 

[pesca]

Hey, guys.
apart from the period from the oleodynamic sector has been very hard and
I believe and hope that there will still be a chance for the road.
Innovate, also because I believe that many sectors are saturated, such as transmissions, etc.
if we put it under this point of view we "domo manufacturing "
We better go live in brazil and down there to grow coconut.
The problem has arisen from the fact that from a production of a tertiary account,
to produce and market a product or product range,
But the step is not easy because I miss the design side and I have no experience on the product.
and you will say but then what about... or you will want to do...
Well, you'd be right, but...
See you.