GB1195368A - Improvements in or relating to Rotary Pumping apparatus - Google Patents

Improvements in or relating to Rotary Pumping apparatus

Info

Publication number
GB1195368A
GB1195368A GB32531/67A GB3253167A GB1195368A GB 1195368 A GB1195368 A GB 1195368A GB 32531/67 A GB32531/67 A GB 32531/67A GB 3253167 A GB3253167 A GB 3253167A GB 1195368 A GB1195368 A GB 1195368A
Authority
GB
United Kingdom
Prior art keywords
probes
rotors
casing
probe
oct
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.)
Expired
Application number
GB32531/67A
Inventor
Peter Henry Gordon Verity
Roy Fawcett Leach
Anthony Ernest Murrell
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.)
Holmes W C & Co Ltd
Original Assignee
Holmes W C & Co 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.)
Filing date
Publication date
Application filed by Holmes W C & Co Ltd filed Critical Holmes W C & Co Ltd
Priority to GB32531/67A priority Critical patent/GB1195368A/en
Priority to FR49233A priority patent/FR1543010A/en
Priority to DE19671576910 priority patent/DE1576910A1/en
Publication of GB1195368A publication Critical patent/GB1195368A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/126—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/81—Sensor, e.g. electronic sensor for control or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/17—Tolerance; Play; Gap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/305—Tolerances

Abstract

1,195,368. Rotary positive-displacement pumps. W.C. HOLMES & CO. Ltd. Oct. 12, 1967 [Oct. 19, 1966; July 14, 1967], Nos.46707 and 32531/67. Heading F1F. In rotary positive-displacement pumping apparatus of the Roots'-blower type a probe 36 in each of several units 34 upon a casing 18 for a pair of pumping rotors (10, 12), (Figs. 1 and 2 (not shown), completes a low-voltage electric circuit including the casing and the rotors whenever axial or radial clearance between the rotor and the part of the casing adjacent the probe reach a predetermined minimum owing to thermal expansion. Completion of the circuit aforesaid by contact between any of the probes and the adjacent rotor produces a warning signal. As an alternative the probes may be arranged in pairs, the circuit being completed when the adjacent rotor touches both of the probes in any pair. Each probe is mounted in an electrically-insulating bush 38 supported by a screw-threaded outer-bush 40, and may be furnished with adjusting means of micrometer type to facilitate measurement of the clearance in its vacinity. The aforementioned warning signal may actuate means for stopping the rotors.
GB32531/67A 1966-10-19 1966-10-19 Improvements in or relating to Rotary Pumping apparatus Expired GB1195368A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB32531/67A GB1195368A (en) 1966-10-19 1966-10-19 Improvements in or relating to Rotary Pumping apparatus
FR49233A FR1543010A (en) 1966-10-19 1967-10-18 Improvements to gear pumps or compressors
DE19671576910 DE1576910A1 (en) 1966-10-19 1967-10-18 Safety device for machines with parts rotating in a housing, especially for Roots blowers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4670766 1966-10-19
GB32531/67A GB1195368A (en) 1966-10-19 1966-10-19 Improvements in or relating to Rotary Pumping apparatus

Publications (1)

Publication Number Publication Date
GB1195368A true GB1195368A (en) 1970-06-17

Family

ID=26261432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32531/67A Expired GB1195368A (en) 1966-10-19 1966-10-19 Improvements in or relating to Rotary Pumping apparatus

Country Status (2)

Country Link
DE (1) DE1576910A1 (en)
GB (1) GB1195368A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994009275A1 (en) * 1992-10-12 1994-04-28 Leybold Aktiengesellschaft Process for operating a dry-compression vacuum pump
WO1998035134A1 (en) * 1997-02-11 1998-08-13 Rotary Power Couple Engines Limited Rotary device with means for monitoring and adjusting the clearance between the rotors
EP1122440A1 (en) * 2000-02-07 2001-08-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method of controlling a process for treating fluids
FR2812041A1 (en) * 2000-07-20 2002-01-25 Cit Alcatel Cooling of a vacuum pump used in the semiconductor industry, uses proximity sensor to control the cooling of the stator in maintain the optimum play between stator and rotor
WO2017025722A1 (en) * 2015-08-07 2017-02-16 Edwards Limited Pump comprising a proximity sensor
WO2021079087A1 (en) * 2019-10-23 2021-04-29 Edwards Limited Sensor assembly

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994009275A1 (en) * 1992-10-12 1994-04-28 Leybold Aktiengesellschaft Process for operating a dry-compression vacuum pump
US5718565A (en) * 1992-10-12 1998-02-17 Leybold Aktiengesellschaft Apparatus and process for operating a dry-compression vacuum pump
US5975857A (en) * 1992-10-12 1999-11-02 Leybold Aktiengesellschaft Process for operating a dry-compression vacuum pump as well as a suitable vacuum pump for implementation of this process
WO1998035134A1 (en) * 1997-02-11 1998-08-13 Rotary Power Couple Engines Limited Rotary device with means for monitoring and adjusting the clearance between the rotors
US6168385B1 (en) 1997-02-11 2001-01-02 Rotary Power Couple Engines Limited Rotary device with means for monitoring and adjusting the clearance between the rotors
FR2804729A1 (en) * 2000-02-07 2001-08-10 Air Liquide METHOD FOR IMPLEMENTING A FLUID COMPRESSION MACHINE, FLUID TREATMENT PLANT COMPRISING SUCH A MACHINE, AND APPLICATION OF SUCH A PLANT TO THE PRODUCTION OF AN AIR CONSTITUENT
EP1122440A1 (en) * 2000-02-07 2001-08-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method of controlling a process for treating fluids
US6447572B2 (en) 2000-02-07 2002-09-10 L'air Liquide, Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Method of regulating a fluid treatment plant, fluid treatment plant and application of such a plant to the production of a constituent of air
FR2812041A1 (en) * 2000-07-20 2002-01-25 Cit Alcatel Cooling of a vacuum pump used in the semiconductor industry, uses proximity sensor to control the cooling of the stator in maintain the optimum play between stator and rotor
WO2017025722A1 (en) * 2015-08-07 2017-02-16 Edwards Limited Pump comprising a proximity sensor
US10968909B2 (en) 2015-08-07 2021-04-06 Edwards Limited Pump comprising a proximity sensor
WO2021079087A1 (en) * 2019-10-23 2021-04-29 Edwards Limited Sensor assembly
CN114829777A (en) * 2019-10-23 2022-07-29 爱德华兹有限公司 Sensor assembly
GB2588890A (en) * 2019-10-24 2021-05-19 Edwards Ltd Sensor assembly

Also Published As

Publication number Publication date
DE1576910A1 (en) 1970-05-06

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee