Is any application than can fly over the map (I control it of course) but chell doesnt move?Like only camera move.OR when its imposible just how can i throw away portalgun and turn off the hud(aiming) in the console.

Waw, are you serious ? Man, I'd like to help but, I didn't understand anything. Is it english slang ?

"cl_drawhud 0", "crosshair 0" and "impulse 200" are used to disable HUD, crosshairs and weapon models.

As for disengaging the camera from the player model, I have no clue.

Oh ok, I understand now.
You can also try the devshot entity.
It's not exactly what you ask for but, it's an entity that can be placed in the level and when you use the devshot command (don't know its exact name) it takes screenshots at every devshot entity position. Useful if you want to take the exact same screenshots of you level during it's development.
There is also the Garry's Mod. I do believe it can help you doing that kind of thing, but only if it's decorative; because there would be no portals.

heh i do not want to make portals.I just want to do what taco says.Thank you.