GB2302189A - Control circuit - Google Patents
Control circuitInfo
- Publication number
- GB2302189A GB2302189A GB9622415A GB9622415A GB2302189A GB 2302189 A GB2302189 A GB 2302189A GB 9622415 A GB9622415 A GB 9622415A GB 9622415 A GB9622415 A GB 9622415A GB 2302189 A GB2302189 A GB 2302189A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control
- control line
- control circuit
- separate
- coupling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Fluid-Pressure Circuits (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Selective Calling Equipment (AREA)
Abstract
A control circuit for controlling a combined emergency shutdown and process protection (safety) system, especially on board platforms and vessels. There are two separate signal generators which, each by means of a control line (10, 17) of its own, can give release or control signals for operating a control valve (21) for the supply of hydraulic or pneumatic pressure medium for coupling a main valve (23) by means of an actuator (22). In order to, that one of the two control signal circuits should be capable of being operated independently on the operating condition and possible error conditions in the other, the control circuit comprises at least two separate connection branches (11, 18) for coupling to a common control line (12) to the control valve (21). The other of the two separate connection branches (18) includes an activating member (20), such as a relay, for a switch (14) adapted to connect the first connection branch (11) to the outgoing control line (12). An input signal on the first connection branch is coupled as an output signal to the control line (12) when a voltage is forced on the activating member (20).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO942588A NO180126C (en) | 1994-07-11 | 1994-07-11 | Control circuit |
PCT/NO1995/000111 WO1996001954A1 (en) | 1994-07-11 | 1995-06-26 | Control circuit |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9622415D0 GB9622415D0 (en) | 1997-01-08 |
GB2302189A true GB2302189A (en) | 1997-01-08 |
GB2302189B GB2302189B (en) | 1998-09-16 |
Family
ID=19897248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9622415A Expired - Fee Related GB2302189B (en) | 1994-07-11 | 1995-06-26 | Control system |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU2992095A (en) |
GB (1) | GB2302189B (en) |
NO (1) | NO180126C (en) |
WO (1) | WO1996001954A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102588388A (en) * | 2012-03-05 | 2012-07-18 | 中联重科股份有限公司 | Start protective device, method and engineering machinery of hydraulic system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10128354B4 (en) | 2001-06-13 | 2004-11-18 | Georg Fischer Rohrverbindungstechnik Gmbh | Device for preventing unintentional restart |
US11105526B1 (en) | 2017-09-29 | 2021-08-31 | Integrated Global Services, Inc. | Safety shutdown systems and methods for LNG, crude oil refineries, petrochemical plants, and other facilities |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4445603A (en) * | 1980-09-12 | 1984-05-01 | Daimler-Benz Aktiengesellschaft | Safety circuit for an electronic throttle control of internal combustion engines |
GB2262624A (en) * | 1991-12-20 | 1993-06-23 | Vickers Systems Ltd | Input/output amplifier device entegrally mounted with hydraulic valve. |
-
1994
- 1994-07-11 NO NO942588A patent/NO180126C/en unknown
-
1995
- 1995-06-26 AU AU29920/95A patent/AU2992095A/en not_active Abandoned
- 1995-06-26 WO PCT/NO1995/000111 patent/WO1996001954A1/en active Application Filing
- 1995-06-26 GB GB9622415A patent/GB2302189B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4445603A (en) * | 1980-09-12 | 1984-05-01 | Daimler-Benz Aktiengesellschaft | Safety circuit for an electronic throttle control of internal combustion engines |
GB2262624A (en) * | 1991-12-20 | 1993-06-23 | Vickers Systems Ltd | Input/output amplifier device entegrally mounted with hydraulic valve. |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102588388A (en) * | 2012-03-05 | 2012-07-18 | 中联重科股份有限公司 | Start protective device, method and engineering machinery of hydraulic system |
CN102588388B (en) * | 2012-03-05 | 2015-02-18 | 中联重科股份有限公司 | Start protective device, method and engineering machinery of hydraulic system |
Also Published As
Publication number | Publication date |
---|---|
GB2302189B (en) | 1998-09-16 |
GB9622415D0 (en) | 1997-01-08 |
NO180126C (en) | 1997-02-19 |
NO942588D0 (en) | 1994-07-11 |
NO180126B (en) | 1996-11-11 |
NO942588L (en) | 1996-01-12 |
AU2992095A (en) | 1996-02-09 |
WO1996001954A1 (en) | 1996-01-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20060626 |