VALVE CLOSING DEVICE AND METHOD FOR PROVIDING A VALVE CLOSING DEVICE

• US 20170146146A1
• Filed: 05/15/2015
• Published: 05/25/2017
• Est. Priority Date: 06/28/2014
• Status: Active Grant

• Current Assignee: Auma Riester GmbH & Co. KG
• Original Assignee: Auma Riester GmbH & Co. KG
• Inventors: Hofmann, Benjamin, Platzer, Wilfried
• Granted Patent: US 10,060,545 B2
• Time in Patent Office: Days
• CPC Class Codes: F16K 31/046 with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor F16K31/041 takes precedence
• CPC Class Codes: H02J 1/10 Parallel operation of dc sources
• CPC Class Codes: H02J 7/0069 Charging or discharging for charge maintenance, battery initiation or rejuvenation
• CPC Class Codes: H02J 7/34 Parallel operation in networks using both storage and other dc sources, e.g. providing buffering H02J7/14 takes precedence
• CPC Class Codes: H02J 9/06 with automatic change-over , e.g. UPS systems
• CPC Class Codes: H02P 4/00 Arrangements specially adapted for regulating or controlling the speed or torque of electric motors that can be connected to two or more different electric power supplies vector control H02P21/00

Abstract

In a valve closing device (4) including an emergency actuator (7, 8), the emergency actuator (7, 8) is energized by at least two independently, redundantly operable energy storage units (10, 11, 18), each of which includes charging electronics (22) that allow rechargeable batteries (19, 20) of the energy storage units (10, 11, 18) to be operated at least in a maintenance charging cycle and in a trickle charging cycle.

Claims

1. A fitting closing device (4) comprising an input shaft (5) and an output shaft (6), which is coupled to the input shaft (5), and an electrically operable emergency drive (7, 8) with which the output shaft (6) is driven outside normal operation, the emergency drive (7, 8) is fed from at least two energy storage units (10, 11, 18) of the fitting closing device (4) which are separate from one another, the energy storage units each have at least one rechargeable battery (19, 20), each said energy storage unit (10, 11, 18) has a charging electronics system (22) in each case, each said charging electronics system (22) is operated at least in a maintenance charging cycle and in a trickle charging cycle, and the charging electronics system (22) of one of said energy storage units (10, 11, 18) is coupled to a charging electronics system (22) of a further one of said energy storage units (10, 11, 18) by at least one of a signal or control connection (49) such that the rechargeable batteries (19, 20) cannot be operated in the maintenance charging cycle in both of the energy storage units (10, 11, 18) simultaneously.

2. The fitting closing device (4) as claimed in claim 1, wherein at least one said energy storage unit (10, 11, 18) has more than one rechargeable battery (19, 20) and the associated charging electronics system (22) is designed such that one said rechargeable battery (19, 20) is operated in the maintenance charging cycle and a further said rechargeable battery (19, 20) is operated in the trickle charging cycle at a same time.

3. The fitting closing device (4) as claimed in claim 1, wherein at least one said energy storage unit (10, 11, 18) has more than one said rechargeable battery (19, 20), and the associated charging electronics system (22) is designed to successively carry out the maintenance charging cycles on the rechargeable batteries (19, 20) of the energy storage unit (10, 11, 18).

4. The fitting closing device (4) as claimed in claim 1, further comprises an arbitration device (50) configured to generate a blocking signal when one said rechargeable battery (19, 20) is operated in the maintenance charging cycle.

5. The fitting closing device (4) as claimed in claim 1, wherein each said charging electronics system (22) configured to make an enable request to an arbitration device (50) before an associated rechargeable battery (19, 20) changes over to the maintenance charging cycle.

6. The fitting closing device (4) as claimed in claim 1, further comprises a blocking diode (53) arranged at a supply output (52) of each said energy storage unit (10, 11, 18).

7. The fitting closing device (4) as claimed in claim 1, wherein each said rechargeable battery (19, 20) is selectively electrically connected to a discharge connection (23), to a trickle charge connection (27) and to a maintenance charge connection (25).

14. The fitting closing device as claimed in claim 1, wherein at least one said energy storage unit (10, 11, 18) has more than one said rechargeable battery (19, 20) and the associated charging electronics system (22) is designed such that at most one said rechargeable battery (19, 20) is operated in the maintenance charging cycle at any time.

15. The fitting closing device as claimed in claim 1, further comprising an arbitration device (50) configured to generate an enable signal when none of the rechargeable batteries (19, 20) is operated in the maintenance charging cycle.

16. The fitting closing device as claims in claim 1, wherein at least one said energy storage unit (10, 11, 18) has more than one said rechargeable battery (19, 20), and in each case one blocking diode (55) is arranged at a rechargeable battery output (54) of each said associated rechargeable battery (19, 20).

8. A method for keeping ready a fitting closing device (4), wherein the fitting closing device (4) has an input shaft (5) and an output shaft (6), which is coupled to the input shaft (5), and an electrically operable emergency drive (7, 8) with which the output shaft (6) is drivable outside normal operation, wherein the emergency drive (7, 8) is fed from at least two energy storage units (10, 11, 18) which are separate from one another, the energy storage units (10, 11, 18) each have at least one rechargeable battery (19, 20), and the method comprising operating at least one said rechargeable battery (19, 20) in a trickle charging cycle while operating a further said rechargeable battery (19, 20) in a maintenance charging cycle, and, when one said rechargeable battery (19, 20) is operated in the maintenance charging cycle, electronically blocking operation in the maintenance charging cycle for all further said rechargeable batteries (19, 20) of at least one of the associated energy storage unit (10, 11, 18) or the fitting closing device (4).

9. The method as claimed in claim 8, wherein before one said rechargeable battery (19, 20) changes over to the maintenance charging cycle, checking in an arbitration method to determine whether a further said rechargeable battery (19, 20) is currently being operated in the maintenance charging cycle.

10. The method as claimed in claim 9, wherein before one said rechargeable battery (19, 20) is operated in the maintenance charging cycle, awaiting at least one of an enable signal or an end of a blocking signal.

11. The method as claimed in claim 10, wherein the rechargeable batteries (19, 20) of one said energy storage unit (10, 11, 18) are successively operated in the maintenance charging cycle.

12. The method as claimed in claim 10, wherein a capacitance of the respective rechargeable battery (19, 20) is measured in the maintenance charging cycle.

13. The method as claimed in claim 12, wherein a fault signal is output when the measured capacitance of the rechargeable battery (19, 20) lies below a threshold value.

17. The method as claimed in claim 9, further comprising generating a blocking signal when one said rechargeable battery (19, 20) is operated in the maintenance charging cycle.

18. The method of claim 10, wherein one said rechargeable battery (19, 20) is fully discharged in the maintenance charging cycle.