Pressure relief valve

• US 6,585,000 B2
• Filed: 09/04/2001
• Issued: 07/01/2003
• Est. Priority Date: 09/04/2001
• Status: Expired due to Fees

• Current Assignee: Lydell Radford
• Original Assignee: Lydell Radford
• Inventors: Radford, Lydell
• Primary Examiner(s): Buiz, Michael Powell
• Assistant Examiner(s): Krishnamurthy, Ramesh
• Application Number:
  US09/946,385
• Publication Number:
  US 20030041904A1
• Time in Patent Office: 665 Days
• Field of Search: 137/514, 137/526, 137/527, 251/54, 251/65, 251/303
• US Class Current: 137/527
• CPC Class Codes: F16K 15/033 spring-loaded
• CPC Class Codes: F16K 17/0446 with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
• CPC Class Codes: Y10T 137/785 With retarder or dashpot
• CPC Class Codes: Y10T 137/7898 Pivoted valves

Abstract

A pressure relief valve for releasing pressure from a system, which pressure relief valve typically includes a valve housing provided on a pressure relief conduit which receives pressure from the system. A valve opening establishes communication between the valve housing and the pressure relief conduit, and a substantially arcuate valve body is pivotally mounted in the valve housing for sealingly and slidably engaging the valve opening. Accordingly, the valve body is capable of pivoting between a first position to close the pressure relief conduit and a second position to open the pressure relief conduit as the valve body slidably traverses the valve opening. A bias mechanism biases the valve body in the closed position in such a manner that the valve body pivots from the closed position to the open position against the bias mechanism and opens the pressure relief conduit, responsive to a threshold pressure of the pressurized fluid impinging against the valve body in the pressure relief conduit.

Claims

1. A pressure relief valve for releasing pressure from a system, comprising:

a valve housing;

a pressure relief conduit provided on said valve housing for fluid communication with the system, said pressure relief conduit having a conduit interior for receiving the pressure and a valve opening between said valve housing and said conduit interior;

a substantially arcuate valve body pivotally mounted in said valve housing for sealingly engaging said valve opening;

wherein said valve body is capable of pivoting in said valve housing between a first position for closing said conduit interior of said pressure relief conduit and a second position for opening said conduit interior of said pressure relief conduit as said valve body slidably traverses said valve opening and continually seals said valve housing from said conduit interior; and

a bias mechanism carried by said valve housing and operably engaging said valve body for biasing said valve body in said first position, whereby said valve body pivots from said first position to said second position against said bias mechanism and opens said pressure relief conduit responsive to a threshold magnitude of the pressure against said valve body.

2. The pressure relief valve of claim 1 comprising a relief vent opening provided in said valve housing for releasing vacuum pressure and air pressure from said valve housing.

3. The pressure relief valve of claim 1 wherein said bias mechanism comprises at least one valve closing spring engaging said valve housing and said valve body.

4. The pressure relief valve of claim 3 comprising a relief vent opening provided in said valve housing for releasing vacuum pressure and air pressure from said valve housing.

5. The pressure relief valve of claim 2 comprising a breather provided in fluid communication with said relief vent opening.

6. The pressure relief valve of claim 5 comprising a pressure/vacuum relief valve provided in fluid communication with said relief vent opening and wherein said breather is provided in fluid communication with said pressure/vacuum relief valve.

7. The pressure relief valve of claim 5 wherein said bias mechanism comprises at least one valve closing spring engaging said valve housing and said valve body.

8. The pressure relief valve of claim 7 comprising a pressure/vacuum relief valve provided in fluid communication with said relief vent opening and wherein said breather is provided in fluid communication with said pressure/vacuum relief valve.

9. The pressure relief valve of claim 1 comprising a pressure adjustment mechanism adjustably engaging said valve body for adjustably tensioning said valve body in said first position.

10. The pressure relief valve of claim 9 comprising a relief vent opening provided in said valve housing for releasing vacuum pressure and air pressure from said valve housing.

11. The pressure relief valve of claim 9 wherein said bias mechanism comprises at least one valve closing spring engaging said valve housing and said valve body.

12. The pressure relief valve of claim 11 comprising a relief vent opening provided in said valve housing for releasing vacuum pressure and air pressure from said valve housing.

13. The pressure relief valve of claim 10 comprising a breather provided in fluid communication with said relief vent opening.

14. The pressure relief valve of claim 13 comprising a pressure/vacuum relief valve provided in fluid communication with said relief vent opening and wherein said breather is provided in fluid communication with said pressure/vacuum relief valve.

15. The pressure relief valve of claim 13 wherein said bias mechanism comprises at least one valve closing spring engaging said valve housing and said valve body.

16. The pressure relief valve of claim 15 comprising a pressure/vacuum relief valve provided in fluid communication with said relief vent opening and wherein said breather is provided in fluid communication with said pressure/vacuum relief valve.

17. The pressure relief valve of claim 2 comprising a pressure/vacuum relief valve provided in fluid communication with said relief vent opening for selectively releasing vacuum pressure and air pressure from said valve housing.

18. A pressure relief valve for releasing pressure from a system, comprising:

a pressure relief conduit for fluid communication with the system and having a conduit interior for receiving the pressure and a valve opening provided in said pressure relief conduit;

a valve housing provided on said pressure relief conduit in communication with said valve opening;

a substantially arcuate valve body pivotally mounted in said valve housing and sealingly engaging said valve opening, said valve body having a curved exterior surface and a curved interior surface;

wherein said valve body is capable of pivoting through said valve opening between a first position for closing said conduit interior of said pressure relief conduit and a second position for opening said conduit interior of said pressure relief conduit;

a bias mechanism carried by said valve housing and operably engaging said valve body for biasing said valve body in said first position, whereby said valve body pivots from said first position to said second position against said bias mechanism and opens said pressure relief conduit responsive to a threshold magnitude of the pressure against said valve body;

a pressure roller engaging said interior surface of said valve body for traversing said interior surface of said valve body as said valve body pivots between said first position and said second position; and

a pressure adjustment mechanism operably engaging said pressure roller for biasing said pressure roller against said interior surface of said valve body.

19. The pressure relief valve of claim 18 wherein said bias mechanism comprises at least one valve closing spring engaging said valve housing and said valve body.

20. The pressure relief valve of claim 18 comprising a controller pin provided on said interior surface of said valve body and wherein said pressure roller engages said controller pin.

21. A pressure relief valve for releasing pressure from a system, comprising:

a pressure relief conduit for fluid communication with the system and having a conduit interior for receiving the pressure and a valve opening provided in said pressure relief conduit;

a valve housing provided on said pressure relief conduit in communication with said valve opening;

a substantially arcuate valve body pivotally mounted in said valve housing and sealingly engaging said valve opening;

wherein said valve body is capable of pivoting through said valve opening between a first position for closing said conduit interior of said pressure relief conduit and a second position for opening said conduit interior of said pressure relief conduit;

a bias mechanism carried by said valve housing and operably engaging said valve body for biasing said valve body in said first position, whereby said valve body pivots from said first position to said second position against said bias mechanism and opens said pressure relief conduit responsive to a threshold magnitude of the pressure against said valve body;

a valve magnet provided on said valve body; and

a housing magnet provided on said valve housing for attracting said valve magnet and biasing said valve body in said second position.

22. A pressure relief valve for releasing pressure from a system, comprising:

a pressure relief conduit for fluid communication with the stem and having a conduit interior for receiving the pressure and a valve opening provided in said pressure relief conduit;

a valve housing provided on said pressure relief conduit in communication with said valve opening;

a substantially arcuate valve body pivotally mounted in said valve housing and sealingly engaging said valve opening, said valve body having a curved exterior surface and a curved interior surface;

a controller pin having a rear end provided on said curved interior surface of said valve body;

wherein said valve body is capable of pivoting through said valve opening between a first position for closing said conduit interior of said pressure relief conduit and a second position for opening said conduit interior of said pressure relief conduit;

a bias mechanism carried by said valve housing and operably engaging said valve body for biasing said valve body in said first position;

a valve guide roller provided on said valve housing and engaging said exterior surface of said valve body;

a pressure roller engaging said controller pin of said valve body for traversing said controller pin as said valve body pivots between said first position and said second position, with said pressure roller engaging said rear end of said controller pin when said valve body is in said first position; and

a pressure adjustment mechanism provided on said valve housing and operably engaging said pressure roller for biasing said pressure roller against said controller pin, whereby said valve body pivots from said first position to said second position against said bias mechanism and said pressure roller traverses said controller pin and said valve body opens said pressure relief conduit responsive to a threshold magnitude of the pressure against said valve body.