Steam Engine Design/Valves - Revision history

Mjn at 17:00, 22 June 2011

2011-06-22T17:00:28Z

← Older revision		Revision as of 17:00, 22 June 2011
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	{{Category=Steam Engine}}		{{Category=Steam Engine}}

			=General Valve Notes=

	Various types and kinds of valves used in steam engines are summarized here.		Various types and kinds of valves used in steam engines are summarized here.

	~~# Steam Engine Design/Valves~~

	* Steam Engine Design/Bump Valve
	* Steam Engine Design/Piston Valve
	* Steam Engine Design/Slide Valve
	* Steam Engine Design/Solenoid
	* Steam Engine Design/Rotating Valve
	* Steam Engine Design/Pressure Relief Valve
	* Electric Valves for Steam Engine

	~~=General Valve Notes=~~

	'''Placement of Exhaust Port'''		'''Placement of Exhaust Port'''
	Placement of the exhaust port in the cylinder wall vs. the fully extended position of the piston matters as it determine the amount of time that steam has to escape the chamber. If the distance is too short, steam will be compressed on the return stroke.		Placement of the exhaust port in the cylinder wall vs. the fully extended position of the piston matters as it determine the amount of time that steam has to escape the chamber. If the distance is too short, steam will be compressed on the return stroke and thus reduce the amount of work done by the engine.

	'''Water Build-up'''		'''Water Build-up'''

Mjn at 16:59, 22 June 2011

2011-06-22T16:59:30Z

← Older revision		Revision as of 16:59, 22 June 2011
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	Various types and kinds of valves used in steam engines are summarized here.		Various types and kinds of valves used in steam engines are summarized here.

			# Steam Engine Design/Valves

			* Steam Engine Design/Bump Valve
			* Steam Engine Design/Piston Valve
			* Steam Engine Design/Slide Valve
			* Steam Engine Design/Solenoid
			* Steam Engine Design/Rotating Valve
			* Steam Engine Design/Pressure Relief Valve
			* Electric Valves for Steam Engine

	=General Valve Notes=		=General Valve Notes=
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	'''Uniflow Engines'''		'''Uniflow Engines'''
	"Steam Engine Valves", Pg. 107 describes Uniflow Engines. Steam admission is done with drop valves.		"Steam Engine Valves", Pg. 107 describes Uniflow Engines. Steam admission is done with drop valves.

			=Control Valve Designs=

	[[Image:Improved-Bump-Valve.png\|thumb\|Improved Bump Valve]]		[[Image:Improved-Bump-Valve.png\|thumb\|Improved Bump Valve]]
	=Bump (or Bash) Valve=		==Bump (or Bash) Valve==

	See [[Steam Engine Design/Bump Valve]]		See [[Steam Engine Design/Bump Valve]]
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	[[Image:Piston-Valve.png\|thumb\|Piston Valve]]		[[Image:Piston-Valve.png\|thumb\|Piston Valve]]
	=Piston Valve=		==Piston Valve==

	See [[Steam Engine Design/Piston Valve]]		See [[Steam Engine Design/Piston Valve]]
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	[[Image:Slide-Valve.png\|thumb\|Slide Valve]]		[[Image:Slide-Valve.png\|thumb\|Slide Valve]]
	=Slide Valve=		==Slide Valve==

	See [[Steam Engine Design/Slide Valve]]		See [[Steam Engine Design/Slide Valve]]
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	A popular valve used in many early and model steam engines.		A popular valve used in many early and model steam engines.

	=~~Cam Actuated Poppet~~ Valve=		==Solenoid Valve==

			See [[Steam Engine Design/Solenoid]]

	=Rotating Valve=		Computer controlled solenoid valves allow complete control over steam admission into a cylinder. An earlier version of the [[Steam Engine Design/2009]] was focused on using solenoids as the control mechanism. While OSE may return to that as a control technique, an open source solenoid needs to be designed and developed capable of handling steam pressures (200+ psi).

			[[Image:Rotating-Valve.png\|thumb\|Rotating Valve Design]]
			==Rotating Valve==

	See [[Steam Engine Design/Rotating Valve]].		See [[Steam Engine Design/Rotating Valve]].

	A rotating ball or cylinder controlled by a stepper motor that allows precise, computer control over when steam is admitted into the piston chamber.		A rotating ball or cylinder controlled by a stepper motor that allows precise, computer control over when steam is admitted into the piston chamber.

			=Pressure Relief Valves=

			==Weight Based Pressure Relief==

			See [[Steam Engine Design/Pressure Relief Valve]].

			=Flow Control Valves=

			* Needle valves

			[[Category:Steam Engine]]

Mjn at 13:47, 22 June 2011

2011-06-22T13:47:12Z

← Older revision		Revision as of 13:47, 22 June 2011
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	=Rotating Valve=		=Rotating Valve=

	A rotating ball or cylinder controlled by a stepper motor that allows precise, computer control over when steam is admitted into the piston chamber~~. See [[Steam Engine Design/Rotating Valve]]~~.		See [[Steam Engine Design/Rotating Valve]].

			A rotating ball or cylinder controlled by a stepper motor that allows precise, computer control over when steam is admitted into the piston chamber.

Mjn at 13:21, 22 June 2011

2011-06-22T13:21:12Z

← Older revision		Revision as of 13:21, 22 June 2011
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	=Cam Actuated Poppet Valve=		=Cam Actuated Poppet Valve=

			=Rotating Valve=

			A rotating ball or cylinder controlled by a stepper motor that allows precise, computer control over when steam is admitted into the piston chamber. See [[Steam Engine Design/Rotating Valve]].

Mjn at 20:26, 14 May 2011

2011-05-14T20:26:03Z

← Older revision		Revision as of 20:26, 14 May 2011
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	The piston valve eliminates the need for a spring to hold the valve against the valve seat when steam is not being let into the cylinder chamber.		The piston valve eliminates the need for a spring to hold the valve against the valve seat when steam is not being let into the cylinder chamber.

			[[Image:Slide-Valve.png\|thumb\|Slide Valve]]
	=Slide Valve=		=Slide Valve=

			See [[Steam Engine Design/Slide Valve]]

	A popular valve used in many early and model steam engines.		A popular valve used in many early and model steam engines.

	=Cam Actuated Poppet Valve=		=Cam Actuated Poppet Valve=

Mjn at 20:01, 14 May 2011

2011-05-14T20:01:07Z

← Older revision		Revision as of 20:01, 14 May 2011
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	"Steam Engine Valves", Pg. 107 describes Uniflow Engines. Steam admission is done with drop valves.		"Steam Engine Valves", Pg. 107 describes Uniflow Engines. Steam admission is done with drop valves.

			[[Image:Improved-Bump-Valve.png\|thumb\|Improved Bump Valve]]
	=Bump (or Bash) Valve=		=Bump (or Bash) Valve=

	See [[Steam Engine Design/Bump Valve]]		See [[Steam Engine Design/Bump Valve]]

			The bump valve is our primary candidate for the first prototype of the OS Steam Engine. Simplicity is in it's favor, but has also been shown to work successfully in other steam engines, particularly the White Cliffs steam engine (see [[Steam Engine Design/White Cliffs]].

			[[Image:Piston-Valve.png\|thumb\|Piston Valve]]
	=Piston Valve=		=Piston Valve=

	See [[Steam Engine Design/Piston Valve]]		See [[Steam Engine Design/Piston Valve]]

	~~=Cam Actuated Poppet Valve=~~		The piston valve eliminates the need for a spring to hold the valve against the valve seat when steam is not being let into the cylinder chamber.

	=Slide Valve=		=Slide Valve=

			A popular valve used in many early and model steam engines.

			=Cam Actuated Poppet Valve=

Mjn at 16:57, 14 May 2011

2011-05-14T16:57:03Z

← Older revision		Revision as of 16:57, 14 May 2011
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	Various types and kinds of valves used in steam engines are summarized here.		Various types and kinds of valves used in steam engines are summarized here.

			=General Valve Notes=

			'''Placement of Exhaust Port'''
			Placement of the exhaust port in the cylinder wall vs. the fully extended position of the piston matters as it determine the amount of time that steam has to escape the chamber. If the distance is too short, steam will be compressed on the return stroke.

			'''Water Build-up'''
			If water builds up in the cylinder without some way to relieve it, it can result in a blow-out of the cylinder end caps. Perhaps the water drain plug can be a valve itself, held in place with a strong string. If water builds up in the cylinder, it will eventually force the water drain valve to open and blow out some of the water. Springs will have to hold against the maximum steam pressure, however.

			'''Uniflow Engines'''
			"Steam Engine Valves", Pg. 107 describes Uniflow Engines. Steam admission is done with drop valves.

	=Bump (or Bash) Valve=		=Bump (or Bash) Valve=
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	=Cam Actuated Poppet Valve=		=Cam Actuated Poppet Valve=

	=~~Side~~ Valve=		=Slide Valve=

Mjn at 21:22, 9 May 2011

2011-05-09T21:22:15Z

← Older revision		Revision as of 21:22, 9 May 2011
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			{{Category=Steam Engine}}

	Various types and kinds of valves used in steam engines are summarized here.		Various types and kinds of valves used in steam engines are summarized here.

Mjn: Created page with "Various types and kinds of valves used in steam engines are summarized here. =Bump (or Bash) Valve= See Steam Engine Design/Bump Valve =Piston Valve= See [[Steam Engine D..."

2011-05-09T21:21:44Z

Created page with "Various types and kinds of valves used in steam engines are summarized here. =Bump (or Bash) Valve= See Steam Engine Design/Bump Valve =Piston Valve= See [[Steam Engine D..."

New page

Various types and kinds of valves used in steam engines are summarized here.

=Bump (or Bash) Valve=

See [[Steam Engine Design/Bump Valve]]

=Piston Valve=

See [[Steam Engine Design/Piston Valve]]

=Cam Actuated Poppet Valve=

=Side Valve=