GB1395897A – Control system
– Google Patents
GB1395897A – Control system
– Google Patents
Control system
Info
Publication number
GB1395897A
GB1395897A
GB4225671A
GB4225671A
GB1395897A
GB 1395897 A
GB1395897 A
GB 1395897A
GB 4225671 A
GB4225671 A
GB 4225671A
GB 4225671 A
GB4225671 A
GB 4225671A
GB 1395897 A
GB1395897 A
GB 1395897A
Authority
GB
United Kingdom
Prior art keywords
pump
valve
regulator
pressure
stand
Prior art date
1971-09-10
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.)
Expired
Application number
GB4225671A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weir Pumps Ltd
Original Assignee
Weir Pumps Ltd
Priority date (The priority date 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 date listed.)
1971-09-10
Filing date
1971-09-10
Publication date
1975-05-29
Priority to BE788530D
priority
Critical
patent/BE788530A/en
1971-09-10
Application filed by Weir Pumps Ltd
filed
Critical
Weir Pumps Ltd
1971-09-10
Priority to GB4225671A
priority
patent/GB1395897A/en
1972-08-30
Priority to US00284876A
priority
patent/US3797966A/en
1972-08-31
Priority to CA150,857A
priority
patent/CA963753A/en
1972-09-08
Priority to FR7231868A
priority
patent/FR2152212A5/fr
1972-09-08
Priority to DE2244104A
priority
patent/DE2244104B2/en
1972-09-08
Priority to JP47090302A
priority
patent/JPS4836592A/ja
1972-09-08
Priority to ES406503A
priority
patent/ES406503A1/en
1972-09-08
Priority to IT69859/72A
priority
patent/IT974987B/en
1972-09-11
Priority to AU46534/72A
priority
patent/AU440180B2/en
1972-09-11
Priority to NL7212334A
priority
patent/NL7212334A/xx
1975-05-29
Publication of GB1395897A
publication
Critical
patent/GB1395897A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
F01K9/02—Arrangements or modifications of condensate or air pumps
F01K9/023—Control thereof
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F04—POSITIVE – DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F04D—NON-POSITIVE-DISPLACEMENT PUMPS
F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F04—POSITIVE – DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F04D—NON-POSITIVE-DISPLACEMENT PUMPS
F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
G—PHYSICS
G05—CONTROLLING; REGULATING
G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
G05D13/00—Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover
Abstract
1395897 Fluid-pressure servomotor systems WEIR PUMPS Ltd 1 Sept 1972 [10 Sept 1971] 42256/71 Heading G3P A control arrangement comprises primary means 20, 21 for sensing fluid conditions at the discharge of a centrifugal pump 2 and generating signals proportional to the conditions, a comparator 11 for comparing a sensed signal value with a desired value from a regulator 23 and producing a control signal based on the comparison to actuate a regulator 12 controlling the operation of a steam turbine 3 driving the pump, secondary means, such as pneumatic trip switches 40 for sensing further operating conditions and a control device 9 for interrupting the control signal to the regulator when any of the further conditions are unsatisfactory. Static pressure is sensed at a point 16 in the discharge and the pressure drop across an orifice at points 17, 17. These are passed to a pneumatic controller 24 which is fed from a reduced pressure source 25 until the pressure developed by the pump is sufficient to trigger a snap actuator 26 and a gate 26A to supply full air-pressure. If an increased output from the pump is required, for example to supply more feed water to a boiler, a non-return valve 18 opens and the increased pressure drop between the points 17 …17 causes the comparator 24 to open the regulator 12. The secondary means includes a plurality of fluid switching devices 28 …. 33 arranged in series in a conduit 8 and responsive, respectively, to turbine exhaust back pressure, pump water temperature, pump oil temperature, head available at pump suction 45 and the load on the pump. A manually operable valve 36 connects inlet 37 of a control valve 35 to the air supply source which then flows through the devices 28 …. 33 and exhausts through a selection switch 38 which additionally serves to bring the pump into operation if it has been on «stand-by». Exhaust air from the final device 33 is recycled to maintain the valve 35 and the switch 38 closed. A stand-by pump having a control arrangement exactly similar to that of Fig. 2A starts up automatically in the event of shut-down of the main pump. The switch 38 of the stand-by pump has a duct 40 to receive an airflow via line 41 from the valve 35 of the main pump circuit when the main pump is shut down so that port 39 communicates loop 8 with the line 41. Air is now directed via line 42 of the stand-by pump control circuit to the part 37 of valve 35 to pressurize the circuit 8 and start the stand-by pump. Relays 52 in the main and standby pump circuits sense the magnitude of the signal passing to a servo-positioner 14 and open a valve 32 to stop the pump if the load becomes excessive. A governor actuates a multi-port slide valve 53 and a discharge valve 15 to vent the regulator 12 if overspeeding occurs. The arrangement may be under the local control of a manual pressure regulator 57 or be remotely controlled by the valve 36 and the switch 38. Specifications 1371231, 1366895, 1360489 are referred to.
GB4225671A
1971-09-10
1971-09-10
Control system
Expired
GB1395897A
(en)
Priority Applications (11)
Application Number
Priority Date
Filing Date
Title
BE788530D
BE788530A
(en)
1971-09-10
CONTROL SYSTEM
GB4225671A
GB1395897A
(en)
1971-09-10
1971-09-10
Control system
US00284876A
US3797966A
(en)
1971-09-10
1972-08-30
Control system
CA150,857A
CA963753A
(en)
1971-09-10
1972-08-31
Control system
DE2244104A
DE2244104B2
(en)
1971-09-10
1972-09-08
Control system for a machine unit
FR7231868A
FR2152212A5
(en)
1971-09-10
1972-09-08
JP47090302A
JPS4836592A
(en)
1971-09-10
1972-09-08
ES406503A
ES406503A1
(en)
1971-09-10
1972-09-08
Control system
IT69859/72A
IT974987B
(en)
1971-09-10
1972-09-08
CONTROL DEVICE FOR MACCHI NE PARTICULARLY FOR A TURBINE DRIVEN ROTODYNAMIC PUMP
AU46534/72A
AU440180B2
(en)
1971-09-10
1972-09-11
Control system
NL7212334A
NL7212334A
(en)
1971-09-10
1972-09-11
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB4225671A
GB1395897A
(en)
1971-09-10
1971-09-10
Control system
Publications (1)
Publication Number
Publication Date
GB1395897A
true
GB1395897A
(en)
1975-05-29
Family
ID=10423584
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4225671A
Expired
GB1395897A
(en)
1971-09-10
1971-09-10
Control system
Country Status (10)
Country
Link
US
(1)
US3797966A
(en)
JP
(1)
JPS4836592A
(en)
BE
(1)
BE788530A
(en)
CA
(1)
CA963753A
(en)
DE
(1)
DE2244104B2
(en)
ES
(1)
ES406503A1
(en)
FR
(1)
FR2152212A5
(en)
GB
(1)
GB1395897A
(en)
IT
(1)
IT974987B
(en)
NL
(1)
NL7212334A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
WO2023285711A1
(en)
*
2021-07-15
2023-01-19
BORYS BOHOSHEVYCH, Iryna
Analogue system for detecting and automating built spaces which is programmable and hydraulically operated
Families Citing this family (9)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3985467A
(en)
*
1975-05-27
1976-10-12
Milton Roy Company
Constant pressure pump
DE3138562A1
(en)
*
1981-09-28
1983-04-21
Siemens AG, 1000 Berlin und 8000 München
Protection device for steam turbine systems
US4913625A
(en)
*
1987-12-18
1990-04-03
Westinghouse Electric Corp.
Automatic pump protection system
JPH0620733A
(en)
*
1992-07-03
1994-01-28
Morimatsu:Kk
Terminal block provided with cover
US6464464B2
(en)
*
1999-03-24
2002-10-15
Itt Manufacturing Enterprises, Inc.
Apparatus and method for controlling a pump system
US7143016B1
(en)
*
2001-03-02
2006-11-28
Rockwell Automation Technologies, Inc.
System and method for dynamic multi-objective optimization of pumping system operation and diagnostics
US11286925B2
(en)
*
2019-04-23
2022-03-29
Peopleflo Manufacturing, Inc.
Electronic apparatus and method for optimizing the use of motor-driven equipment in a control loop system
US20230081667A1
(en)
*
2021-09-14
2023-03-16
Saudi Arabian Oil Company
Protecting centrifugal pumps from cavitation through applied mathematical technique
CN114033655A
(en)
*
2021-10-18
2022-02-11
唐山钢铁集团微尔自动化有限公司
Automatic control method for combined pump
Family Cites Families (12)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB385096A
(en)
*
1931-12-05
1932-12-22
G & J Weir Ltd
Improvements relating to the controlling of boiler feed pumps
US2880673A
(en)
*
1954-06-18
1959-04-07
Leslie Co
Pressure regulating system for bearings, and the like
US3029636A
(en)
*
1955-05-31
1962-04-17
North American Aviation Inc
Static pressure compensator
US2813231A
(en)
*
1956-01-17
1957-11-12
Westinghouse Electric Corp
Over-pressure protection of pipe lines
US2961964A
(en)
*
1956-01-26
1960-11-29
Worthington Corp
Control system for a boiler feed pump driven by a turbine
US2942866A
(en)
*
1957-06-03
1960-06-28
Hagan Chemicals & Controls Inc
Apparatus for distributing wind from a plurality of turbine driven blowers to the bustle pipes of a plurality of blast furnaces
US2938536A
(en)
*
1957-10-29
1960-05-31
Honeywell Regulator Co
Controller
US3068796A
(en)
*
1959-11-20
1962-12-18
Shell Oil Co
Power level controller
US3119552A
(en)
*
1960-01-27
1964-01-28
Gutehoffnungshuette Sterkrade
Control mechanism for rotary compressors
US3232519A
(en)
*
1963-05-07
1966-02-01
Vilter Manufacturing Corp
Compressor protection system
US3478731A
(en)
*
1966-08-08
1969-11-18
Honeywell Inc
Engine startup sequence control apparatus
US3424370A
(en)
*
1967-03-13
1969-01-28
Carrier Corp
Gas compression systems
0
BE
BE788530D
patent/BE788530A/en
unknown
1971
1971-09-10
GB
GB4225671A
patent/GB1395897A/en
not_active
Expired
1972
1972-08-30
US
US00284876A
patent/US3797966A/en
not_active
Expired – Lifetime
1972-08-31
CA
CA150,857A
patent/CA963753A/en
not_active
Expired
1972-09-08
JP
JP47090302A
patent/JPS4836592A/ja
active
Pending
1972-09-08
ES
ES406503A
patent/ES406503A1/en
not_active
Expired
1972-09-08
IT
IT69859/72A
patent/IT974987B/en
active
1972-09-08
FR
FR7231868A
patent/FR2152212A5/fr
not_active
Expired
1972-09-08
DE
DE2244104A
patent/DE2244104B2/en
not_active
Ceased
1972-09-11
NL
NL7212334A
patent/NL7212334A/xx
unknown
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
WO2023285711A1
(en)
*
2021-07-15
2023-01-19
BORYS BOHOSHEVYCH, Iryna
Analogue system for detecting and automating built spaces which is programmable and hydraulically operated
ES2932669A1
(en)
*
2021-07-15
2023-01-23
Bohoshevych Iryna Borys
Analog system for the detection and automation of built spaces, programmable, with hydraulic operation (Machine-translation by Google Translate, not legally binding)
Also Published As
Publication number
Publication date
FR2152212A5
(en)
1973-04-20
DE2244104A1
(en)
1973-03-15
JPS4836592A
(en)
1973-05-30
DE2244104B2
(en)
1975-04-10
CA963753A
(en)
1975-03-04
NL7212334A
(en)
1973-03-13
IT974987B
(en)
1974-07-10
ES406503A1
(en)
1975-07-16
AU4653472A
(en)
1973-09-27
US3797966A
(en)
1974-03-19
BE788530A
(en)
1973-01-02
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Legal Events
Date
Code
Title
Description
1975-10-08
PS
Patent sealed [section 19, patents act 1949]
1980-04-16
PCNP
Patent ceased through non-payment of renewal fee
