Safety system for a pressure accumulator

Patent metadata

Field	Value
Publication number	US-11112062-B2
Application number	US-201816634599-A
Country	US
Kind code	B2
Filing date	Aug 9, 2018
Priority date	Aug 12, 2017
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

A safety system has a valve block ( 10 ) to which at least one gas safety valve ( 12, 14 ) is connected in a detachable manner. At least one controllable valve ( 50, 52, 58 ) is in or at the valve block ( 10 ). At least one pressure accumulator ( 42 ) holds a gaseous pressure medium and is connected to the valve block ( 10 ) in a detachable manner. A gas-conveying connection routed at least partially within the valve block ( 10 ) between the connected pressure accumulator ( 42 ) and the connected gas safety valves ( 12, 14 ) can be opened or blocked by the valve ( 50, 52, 58 ).

First claim

The invention claimed is:

1. A safety system, comprising:
a valve block with first and second valve ports and a first supply pressure port;
first and second gas safety valves connected in fluid communication to the valve block via the first and second valve ports, respectively;
a first pressure accumulator being capable of holding a gaseous pressure medium and being connected in fluid communication to the valve block via the first pressure supply port;
gas-conveying connections extending in the valve block between the first pressure supply port and the first and second valve ports; and
a control valve device in the gas-conveying connections selectively and individually opening and blocking fluid flow in the gas-conveying connections between the first pressure supply port and the first and second valve ports such that fluid communication between the first pressure accumulator either one of the first and second gas safety valve is open while fluid communication to the other of the first and second gas safety valves is able to be blocked;
whereby, one of the first and second gas safety valve may be disconnected from the valve block, while the other of the first and second gas safety valves is maintained in fluid communication with the first pressure accumulator.

2. A safety system according to claim 1 wherein
the first pressure accumulator comprises a pressure vessel at least one of filled exclusively with the gaseous pressure medium or a hydraulic accumulator with a separator in a storage housing separating a gas side from a liquid side in the storage housing.

3. A safety system according to claim 1 wherein
the control valve device includes at least one of a mechanical locking system, a mechanical control system, an electrical monitoring system or a chip-controlled actuation system for controllable valves of the control valve device.

4. A safety system according to claim 1 wherein
the valve device comprises first and second ball valves connected in fluid communication between the first gas safety valve and the first pressure accumulator and between the second gas safety valve and the first pressure accumulator, respectively, the first and second control valves having first and second control disks, respectively, mechanically locking the first ball valve in an open position thereof when the second ball valve is moved to a closed position thereof and mechanically locking the second ball valve in an open position thereof when the first ball valve is moved to a closed position thereof.

5. A safety system according to claim 4 wherein
the first and second ball valves are manually operable.

6. A safety system according to claim 4 wherein
the first and second ball valves have first and second ball valves have first and second hand levers, respectively, moving the first and second ball valves individually between the open and closed positions thereof; and
the first and second control disks have first and second cutouts, respectively, on outer peripheries of the first and second control disks, the first and second cutouts enable or block rotational movement of the second and first hand levers, respectively.

7. A safety system according to claim 6 wherein
the valve block comprises first and second stop limits interacting with the first and second control disks, respectively, limiting pivoting of the first and second hand levers to 90 degree rotations between the open position in which the respective hand lever is parallel to a longitudinal direction of the respective gas safety valve and the closed position in which the respective hand lever is transverse to the longitudinal direction of the respective gas safety valve.

8. A safety system according to claim 1 wherein
the control valve device comprises a mechanical three-way ball valve selectively connecting the first gas safety valve in fluid communication to the first pressure accumulator and blocking fluid communication between the second gas safety valve and the first pressure accumulator in a first control position of the three-way ball valve and connecting the second gas safety valve in fluid communication to the first pressure accumulator and blocking fluid communication between the first gas safety valve and the first pressure accumulator in a second control position of the three-wall ball valve.

9. A safety system according to claim 1 wherein
sensors are connected to the control valve device and monitor positions of the control device in opening fluid communication between the first and second gas safety valves and the first pressure accumulator for an electronic monitoring system controlling operation of the control valve device.

10. A safety system according to claim 1 wherein
the first pressure accumulator is a hydraulic accumulator supply system; and
a control chip of a chip controlled actuation system permits operation of the control valve device controlling fluid communication of the first and second gas safety valves to a hydraulic accumulator supply system of the first pressure accumulator if the hydraulic accumulator supply system is deployed and stops the operation of the control valve device if the hydraulic accumulator supply system is removed with the control valve device blocking fluid communication connections to the first and second gas safety valves.

11. A safety system according to claim 1 wherein
the valve block comprises a second pressure supply port connected in fluid gas communication by a connecting line in the valve block to the first pressure supply port via a check valve when the check valve is open; and
a second pressure accumulator is connected in fluid communication to the second pressure supply port.

12. A safety system according to claim 11 wherein
the first pressure accumulator is a hydraulic accumulator with a gas side connected in fluid communication to the first pressure supply port.

13. A safety system according to claim 11 wherein
the second pressure accumulator is a gas pressure accumulator.

14. A safety system according to claim 11 wherein
the valve block comprises a filling and testing port with a filling and testing device connected in fluid communication to the filling and testing port, the filling and testing port being directly connected in fluid gas communication to the first pressure supply port; and
the filling and testing port is connected in fluid communication between the first and second pressure supply ports via a check valve opening in a direction of the control valve device.

15. A safety system, comprising:
a valve block with first and second valve ports and a pressure supply port;
first and second gas safety valves connected in fluid communication connected to the valve block via the first and second valve ports, respectively;
a first pressure accumulator holding a gaseous pressure medium and being connected in fluid communication to the valve block via the pressure supply port;
gas-conveying lines in the valve block connecting the pressure supply port and the first and second valve ports;
independently operable first and second control valves connected in the gas-conveying lines between the pressure supply port and the first and second valve ports, respectively, such that fluid communication between the pressure supply port and one of the first and second valve ports is open while fluid communication to the other of the first and second valve ports is blocked; and
first and second control disks on the first and second control valves, respectively, mechanically locking the first control valve in an open position thereof when the second control valve is rotated to a

Assignees

• Hydac Technology Gmbh

Inventors

• Kreutzer Thomas
• Goetz Thomas

Classifications

• F15B21/005

  Filling or draining of fluid systems · CPC title

• F17C2205/0332

  Safety valves or pressure relief valves · CPC title

• F15B2211/411

  the positions being discrete · CPC title

• F15B2211/41

  characterised by the positions of the valve element · CPC title

• F15B2211/50518

  using pressure relief valves · CPC title