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US 10,119,478 B2Granted
High reliability high flow redundant trip block
AssigneeWoodward, Inc.
InventorsJohn J. Been, Michael S. Zrubek, Jonathan P. Workman
Life of this patent
Estimating the term…
Abstract
A trip block is provided. The trip block includes a single housing which commonly houses multiple valve assemblies. Each valve assembly includes a rotary valve member arrangement. The rotary valve member arrangement includes a spool and a sleeve with a predefined radial clearance between the spool and sleeve.
Claims11
A trip block, comprising:
- a housing having an inlet, an outlet, and a plurality of interconnected passageways;
- a plurality of valve assemblies, wherein a portion of each valve assembly is housed within the housing, wherein each valve assembly of the plurality of valve assemblies includes a rotary valve member arrangement and an actuator for actuating the rotary valve member arrangement;
- wherein each one of the plurality of valve assemblies is arranged within the housing to govern a flow of fluid between the inlet and the outlet;
- wherein the rotary valve member arrangement of each one of the plurality of valve assemblies includes a spool rotatably disposed within a sleeve;
- wherein the spool includes a shaft and at least one valve member mounted to the shaft
- wherein the at least one valve member is cup-shaped and includes a plurality of ports extending through a sidewall of the at least one valve member;
- wherein an interior surface of the sidewall of the at least one valve member includes a continuous groove which extends across each one of the plurality of ports such that the side wall has a reduced cross sectional thickness in an area of each port.
4 more elements
A trip block, comprising:
- a housing having an inlet and an outlet;
- a first valve assembly partially disposed within a first cavity of the housing, the first cavity extending normal to a direction of flow between the inlet and outlet;
- a second valve assembly partially disposed within a second cavity of the housing, the second cavity normal to the direction of flow between the inlet and the outlet;
- a third valve assembly partially disposed within a third cavity of the housing, the third cavity normal to the direction of flow between the inlet and the outlet;
- a first flow passage extending only between the first cavity and the second cavity;
- a second flow passage extending only between the first cavity and the second cavity;
- a third flow passage extending only between the second cavity and the third cavity;
- and
- a fourth flow passage extending between the first cavity, the second cavity, and the third cavity.
6 more elements
A method for making a trip block, the method comprising the steps of:
- providing a housing;
- situating a portion of each of a plurality of valve assemblies within said housing, wherein each valve assembly includes a rotary valve member arrangement;
- wherein the step of providing the housing includes providing the housing with a first, a second, and a third cavity extending parallel to one another, and providing the housing with a first flow passage extending only between the first cavity and the second cavity, a second flow passage extending only between the first cavity and the second cavity, a third flow passage extending only between the second cavity and the third cavity, and a fourth flow passage extending between the first cavity, the second cavity, and the third cavity.
Dependencies are inferred from the claim text.