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Wear combination for starter air valve

A combination and starter technology, applied in the direction of engine components, machines/engines, jet propulsion devices, etc., can solve problems such as manual pull feedback system failure

Inactive Publication Date: 2013-11-06
HAMILTON SUNDSTRAND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, wear can potentially lead to failure of the manual pull feedback system

Method used

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  • Wear combination for starter air valve
  • Wear combination for starter air valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] figure 1 A perspective view of one embodiment of a starter valve 10 for a turbo starter is shown. Valve 10 includes a manual toggle lever 12 and a switch 14 . In the illustrated embodiment, the toggle lever 12 includes a paddle 16 and the switch 14 includes a plunger 18 . Paddle 16 and plunger 18 together form a wear association 20 .

[0011] as the picture shows. Toggle lever 12 is mounted to the exterior of valve 10 . The trigger lever 12 is manually rotatable relative to the valve 10 by known mechanisms, such as a tool inserted into a square head or hexagonal head recess formed in the trigger lever 12 .

[0012] A plunger 18 extends from the switch 14 and is movable relative to the remainder of the switch. In one embodiment, plunger 18 has a generally cylindrical shape with an outer surface. In one embodiment, both the plunger and the outer surface are constructed of stainless steel, such as 17-4PH stainless steel or AISI 303 stainless steel.

[0013] The swit...

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Abstract

A wear combination includes a first surface formed by a nickel-based hardface alloy and a second surface formed by steel. The second surface is disposed in frictional contact with the first surface.

Description

technical field [0001] The present invention relates to wear couplings, and more particularly to valves for turbine starters. Background technique [0002] A turbine starter includes a turbine that requires an air source to operate properly. The air source is provided by means of ductwork upstream of the turbine through which an air flow path is defined. A valve is typically provided along this passage for regulating the amount of air flow allowed to proceed to the turbine. When more air flow is required, the valve opens; and when it is necessary to restrict that air flow, the valve closes. [0003] Valves for modern turbine starters are typically controlled by pneumatic actuation systems. In the event of a pneumatic system failure, a manual toggle lever allows the valve to be opened manually. To facilitate valve opening and closing feedback, the toggle lever interfaces with the switch. When the trigger lever is turned manually (in the event of a pneumatic failure), the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/277
CPCF01D17/141F02C7/277
Inventor K.M.兰金F.P.马科基尼M.卡波兹
Owner HAMILTON SUNDSTRAND CORP