There was some similar incident in east germany in the 1970ies if I am not mistaken. I think there it mainly was the engineers fault but I'm not sure as I don't have the whole story present
@@hugoslr Thank you very much. The first question is about the 141P itself: It's mentioned that the 141P has special piston valves of Willoteaux construction. Are there any pictures of this piston valve? I only have found schematics, but never seen a real picture of this valve... My second question is about the AFCI feed water heater: Are there any schematics to understand the working and function of the heater? The third question is about DABEG feed water pump: Are there any schematics of the pump, to understand its parts and function better? It's quite a standard pump on many french locomotives, but I find it interesting, to compare this pump to the typical standard german or Austrian pumps?
@@SteffenReichel -I've not been able to find direct pictures of Willoteaux valves, however all there is to know about them is that they were relatively light, and allowed for a very large port surface. (often called Double admission, double exhaust valves) -ACFI heater: (second image in link below) uses a single horizontal pump with a "cold water" and "hot water" chamber, water comes from the tender, goes through the CW cylinder, goes up to the "baloons" right aft of the stack and is mixed with a bit of (cleaned) exhaust steam from the cylinders, and from auxiliaries. The second baloon/ tank stores the heated water for it to then be sent to the HW cylinder, and then to the boiler itself through check valves. rixke.tassignon.be/spip.php?article654&lang=fr&artpage=3-3 -The DABEG is also a direct contact feedwater heater, however instead of using a steam-driven pump it uses movement from the running gear to pump the water around, and (i believe) uses a simplified-single mixing tank system. The DABEG (and ACFI) could then be linked in series to an "economizer" that would run the water through boiler smoke tubes, further heating it before sending it to the boiler.
@@hugoslr Thank you very much. I only know the Willoteaux valves because of drawings in Chaplons books. The link about the AFCI heater helps pretty well, thank you, the pumps I have pictures of 241P and 231E from the Cité du Train... So it helps, that even french steam people haven't seen a Willoteaux valve, and I am still curious about
Oui, c'est vrai, et alors? C'est justement le but de cette vidéo de rendre accessible le ferroviaire français à des horizons plus larges que notre cher pays!
super vidéo , captivant, une explosion qui propulse ces bouts d'acier aussi loin olala
There was some similar incident in east germany in the 1970ies if I am not mistaken. I think there it mainly was the engineers fault but I'm not sure as I don't have the whole story present
Asuperior video! Do you know french locomotives in detail? I have several questions...
If you have questions, i'm quite familiar with most of them. Do ask, i cannot not help!
@@hugoslr Thank you very much.
The first question is about the 141P itself:
It's mentioned that the 141P has special piston valves of Willoteaux construction.
Are there any pictures of this piston valve? I only have found schematics, but never seen a real picture of this valve...
My second question is about the AFCI feed water heater:
Are there any schematics to understand the working and function of the heater?
The third question is about DABEG feed water pump: Are there any schematics of the pump, to understand its parts and function better? It's quite a standard pump on many french locomotives, but I find it interesting, to compare this pump to the typical standard german or Austrian pumps?
@@SteffenReichel
-I've not been able to find direct pictures of Willoteaux valves, however all there is to know about them is that they were relatively light, and allowed for a very large port surface. (often called Double admission, double exhaust valves)
-ACFI heater: (second image in link below) uses a single horizontal pump with a "cold water" and "hot water" chamber, water comes from the tender, goes through the CW cylinder, goes up to the "baloons" right aft of the stack and is mixed with a bit of (cleaned) exhaust steam from the cylinders, and from auxiliaries. The second baloon/ tank stores the heated water for it to then be sent to the HW cylinder, and then to the boiler itself through check valves.
rixke.tassignon.be/spip.php?article654&lang=fr&artpage=3-3
-The DABEG is also a direct contact feedwater heater, however instead of using a steam-driven pump it uses movement from the running gear to pump the water around, and (i believe) uses a simplified-single mixing tank system.
The DABEG (and ACFI) could then be linked in series to an "economizer" that would run the water through boiler smoke tubes, further heating it before sending it to the boiler.
@@hugoslr Thank you very much.
I only know the Willoteaux valves because of drawings in Chaplons books.
The link about the AFCI heater helps pretty well, thank you, the pumps I have pictures of 241P and 231E from the Cité du Train...
So it helps, that even french steam people haven't seen a Willoteaux valve, and I am still curious about
@@SteffenReichel yeah, sadly the locomotives built with them (141P, 242 A, the GELSA ones) were all dismantled. So... we can't know, really.
C'est un fait divers français et vous parler britannique
Oui, c'est vrai, et alors? C'est justement le but de cette vidéo de rendre accessible le ferroviaire français à des horizons plus larges que notre cher pays!