Author Topic: VIIC/41 - Schematices drawing  (Read 512038 times)

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Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1095 on: 13 Jan , 2013, 11:21 »
Simon looks very good.
A question on the saddletanks manhole covers. Apparently there are variations, I seems to remember they were oval shape like on the drawing below and the photos of U 995 and your photo of U 249. I assumed your research on U 1308 has resulted in the arrangement, two round and three oval, on your  drawing.
Tore

Tore, I think the discussion about round and oval saddle tanks manhole covers have been around for the last thirty years ;D
 
Below is a link to our discussion about the saddle tanks manhole covers and the reason for the two round and three oval arrangement.

models.rokket.biz/index.php?topic=106.msg6698#msg6698

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1096 on: 15 Jan , 2013, 21:14 »

Offline tore

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Re: VIIC/41 - Schematices drawing
« Reply #1097 on: 16 Jan , 2013, 00:44 »
Simon.
I guess the deckcontainers came in sections one by one. U 995 did not have containers in May 1945, see photo. In my time we had two. My other photo of U 1023 shows three containers. Our other VIICs had 3 and 4 containers.
Tore

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1098 on: 06 Feb , 2013, 13:53 »
Q. Maciek, double checking this is Emergency vent system for the MB & RFO Tank 2 (Bb & Stb)?
Q. Tore, I  imagine the handle on valve d1 were removed like the other valves along the pressure hull?
http://www.uboatarchive.net/U-570Plate16.htm


Q. Tore/Maciek, valve b1 can control from the Control Room and Engine Room?


Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1099 on: 06 Feb , 2013, 14:16 »
Q. Tore/Maciek, I imagine small pipes are high pressure lines?


Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1100 on: 06 Feb , 2013, 14:23 »
Q. Tore/Maciek, why are there small metal tab partly around these hull bolts? I seen this before on pressure hull flanges.


Offline tore

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Re: VIIC/41 - Schematices drawing
« Reply #1101 on: 06 Feb , 2013, 14:39 »
Simon.
These plates are lockingplates generally used on essential nuts to prevent vibration etc unscrew the nuts.
Tore

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Re: VIIC/41 - Schematices drawing
« Reply #1102 on: 06 Feb , 2013, 14:44 »
Simon.
These plates are lockingplates generally used on essential nuts to prevent vibration etc unscrew the nuts.
Tore

I can not imagine it was good to have they bolts falling out ;D ;)

Tore, were they a softer metal?

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1103 on: 06 Feb , 2013, 21:42 »
Updated Interconnector MB & ROL Tank 2
  • Corrected pipe alignment.
  • Corrected Saddle Tank openings.
  • Revise Emergency vent valves to match correct valves type.
  • Added more detail to Vent valves, main ballast and reserve fuel oil tanks.
  • Corrected pipe alignment.
  • Added pipe colour to the first section of piping only.


Fig. 1. (Left) Old drawing; (Right) New updated drawing.

Offline tore

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Re: VIIC/41 - Schematices drawing
« Reply #1104 on: 07 Feb , 2013, 01:06 »
Simon.
These plates are lockingplates generally used on essential nuts to prevent vibration etc unscrew the nuts.
Tore

I can not imagine it was good to have they bolts falling out ;D ;)

Tore, were they a softer metal?


Simon.
The locking plates are very much in use today as well and are not of particulary soft steel. For instant inside the engine crankcase all the nuts are locked in this way. The other alternative is to use a locking wire, if you remember the adjusting nuts of the main engine inlet and exhaustvalves were locked by a wire.
Tore

Offline tore

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Re: VIIC/41 - Schematices drawing
« Reply #1105 on: 07 Feb , 2013, 01:24 »
Simon.
Venting of mainballast tanks 2 port and starboard
I don`t think the ventvalves operated in the engine room is an emergency venting. I would rather name it as a residueventing. The idea is when diving at a sharp angle, air would be trapped in the aft end of main ballast tank 2 port and starboard and the venting system takes care of this trapped air.
I guess you are right in removing the valvewheel d1
Tore

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Re: VIIC/41 - Schematices drawing
« Reply #1106 on: 07 Feb , 2013, 02:44 »
Simon
Valve b1.Residueventing
The valve is operated both from the controlroom and engine room, see drawing below.
Tore

Offline SnakeDoc

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Re: VIIC/41 - Schematices drawing
« Reply #1107 on: 07 Feb , 2013, 03:29 »
Hi Guys,


Q. Maciek, double checking this is Emergency vent system for the MB & RFO Tank 2 (Bb & Stb)?

As Tore said, it is rather Restentluft

Offline NZSnowman

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Re: VIIC/41 - Schematices drawing
« Reply #1108 on: 07 Feb , 2013, 11:25 »
Hi Guys,

Q. Tore/Maciek, I imagine small pipes are high pressure lines?

Hard to say, they can be high pressure lines (but I don't know, why they were led to the bottom), or fuel oil sounding lines.


--
Regards
Maciek

Thanks Guys for all the answers.

I was asking the question about the small pipe because I have seen this style of external pressure hull opening several times before being used on smaller pipes.

I still not seen any pictures of the high pressure air lines external pressure hull opening, and I starting to think the German use this style to get the high pressure air lines inside.

Any thoughts?

TopherVIIC

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Re: VIIC/41 - Schematices drawing
« Reply #1109 on: 07 Feb , 2013, 11:41 »
My purely explosive point of view is that a line leading entirely to the bottom of an oil/fuel filled chamber is more of a sounding line than not. It is not likely used for filling, nor is it likely used  to determine anything but the level of the tank it leads to... Tanks tend to be filled from the top... where air can get out.

That does not refer to HP tanks... which are filled as needed of course... (edit at 1348 ish)

« Last Edit: 07 Feb , 2013, 11:49 by TopherVIIC »