Dual trip manifold assembly for turbine systems

• US 10,018,072 B2
• Filed: 09/26/2016
• Issued: 07/10/2018
• Est. Priority Date: 05/26/2016
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (General Electric Company)
• Original Assignee: General Electric Company
• Inventors: Virkler, Adam Eric, Nosek, Daniel John, Wojick, Troy Gilchrist, Dietrich, Brent Allan, Bailey, Terry Joseph
• Primary Examiner(s): CHAUDRY, ATIF H
• Application Number:
  US15/276,406
• Publication Number:
  US 20170342856A1
• Time in Patent Office: 652 Days
• CPC Class Codes: F01D 21/02 Shutting-down responsive to overspeed
• CPC Class Codes: F01D 21/14 responsive to other specific conditions
• CPC Class Codes: F01D 21/16 Trip gear
• CPC Class Codes: F01D 21/18 involving hydraulic means
• CPC Class Codes: F01K 13/02 Controlling, e.g. stopping or starting
• CPC Class Codes: F01K 7/16 the engines being only of turbine type the engines using steam of critical or overcritical pressure F01K7/32; the engines being of extraction or non-condensing type F01K7/34
• CPC Class Codes: F01K 7/165 Controlling means specially adapted therefor
• CPC Class Codes: F05D 2220/30 in turbines
• CPC Class Codes: F05D 2220/76 an electrical generator
• CPC Class Codes: F05D 2260/4031 as in toothed gearing
• CPC Class Codes: F05D 2260/605 Venting into the ambient atmosphere or the like
• CPC Class Codes: F05D 2270/021 to prevent overspeed
• CPC Class Codes: F05D 2270/091 in particular sudden load loss
• CPC Class Codes: F16K 31/041 for rotating valves F16K31/055 takes precedence
• CPC Class Codes: F16K 31/042 with electric means, e.g. for controlling the motor or a clutch between the valve and the motor
• CPC Class Codes: F16K 31/043 characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
• CPC Class Codes: F16K 31/045 with torque limiters
• CPC Class Codes: F16K 31/047 characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means F16K31/043 takes precedence
• CPC Class Codes: F16K 31/048 with torque limiters F16K31/041 takes precedence
• CPC Class Codes: F16K 35/14 interlocking two or more valves
• CPC Class Codes: H02K 7/1823 : structurally associated with turbines or similar engines
• CPC Class Codes: Y10T 137/87113 : Interlocked
• CPC Class Codes: Y10T 137/87981 : Common actuator
• CPC Class Codes: Y10T 137/88014 : Opposed screw

Abstract

A dual trip manifold assembly (TMA) includes an isolation valve assembly having a first valve configured to receive a flow of fluid from a hydraulic system fluid supply. The first valve is configured to channel the flow of fluid to at least one hydraulic circuit. The isolation valve assembly also includes a second valve configured to receive the flow of fluid from the at least one hydraulic circuit. The second valve is further configured to channel the fluid flow to a trip header. The first valve and the second valve are synchronized to each other such that rotation of one valve causes a substantially similar rotation in the other valve.

Claims

1. An emergency overspeed protection system comprising:

at least one trip manifold assembly (TMA) comprising a fluid supply header and a trip header coupled in flow communication to said fluid supply header; and

an isolation valve assembly comprising;

a first valve configured to receive a flow of fluid from a hydraulic system fluid supply, said first valve coupled in flow communication to said fluid supply header; and

a second valve coupled in flow communication to said trip header, said second valve configured to receive the flow of fluid from said trip header,

wherein said first valve and said second valve are coupled to each other such that closing said first valve with respect to said at least one TMA causes said second valve to close with respect to said at least one TMA, thereby isolating said at least one TMA from the flow of fluid.

2. An emergency overspeed protection system in accordance with claim 1, wherein said isolation valve assembly further comprises a plurality of vent port valves configured to release fluid pressure in at least a portion of said isolation valve assembly.

3. An emergency overspeed protection system in accordance with claim 1, wherein said isolation valve assembly further comprises a plurality of pressurization valves configured to channel pressurized fluid from one side of said isolation valve assembly to the other.

4. An emergency overspeed protection system in accordance with claim 1, wherein said isolation valve assembly further comprises a rotatable shaft coupled to said first valve and said second valve.

5. An emergency overspeed protection system in accordance with claim 4, wherein said isolation valve assembly further comprises a plurality of position switches coupled to said rotatable shaft, said plurality of position switches configured to indicate a position of said first valve and said second valve.

6. An emergency overspeed protection system in accordance with claim 4, wherein said isolation valve assembly further comprises a plurality of visual indicators, said plurality of visual indicators configured to present a visual indication of the position of said first valve and said second valve based on the position indication of said plurality of position switches.

7. An emergency overspeed protection system in accordance with claim 4, wherein said isolation valve assembly further comprises a gearbox coupled to said rotatable shaft, said gearbox configured to rotate said rotatable shaft to adjust a position of said first valve and said second valve.

8. An emergency overspeed protection system in accordance with claim 7, wherein said isolation valve assembly further comprises an over-torque protector coupled to said gearbox, said over-torque protector configured to provide over-torque protection to said gearbox when an input torque exceeds a predetermined torque value.

9. An emergency overspeed protection system in accordance with claim 8, wherein said over-torque protector is configured to slip when the input torque exceeds the predetermined torque value.

10. An emergency overspeed protection system in accordance with claim 8, wherein said over-torque protector is configured to provide repeatable over-torque protection without sustaining damage to said over-torque protector.

11. An emergency overspeed protection system in accordance with claim 1 further comprising at least one of a turbine system and an electrical generator communicatively coupled to said isolation valve assembly.