JPS5773624A - Prevention device for leakage of twin rotor type flow meter - Google Patents

Prevention device for leakage of twin rotor type flow meter

Info

Publication number
JPS5773624A
JPS5773624A JP14954180A JP14954180A JPS5773624A JP S5773624 A JPS5773624 A JP S5773624A JP 14954180 A JP14954180 A JP 14954180A JP 14954180 A JP14954180 A JP 14954180A JP S5773624 A JPS5773624 A JP S5773624A
Authority
JP
Japan
Prior art keywords
rotors
magnet
case
leakage
gap
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.)
Pending
Application number
JP14954180A
Other languages
Japanese (ja)
Inventor
Shigeomi Suzuki
Teruo Yamada
Masanori Shibata
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.)
Aichi Tokei Denki Co Ltd
Original Assignee
Aichi Tokei Denki 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 Aichi Tokei Denki Co Ltd filed Critical Aichi Tokei Denki Co Ltd
Priority to JP14954180A priority Critical patent/JPS5773624A/en
Publication of JPS5773624A publication Critical patent/JPS5773624A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F3/00—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
    • G01F3/02—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement
    • G01F3/04—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls
    • G01F3/06—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with measuring chambers which expand or contract during measurement having rigid movable walls comprising members rotating in a fluid-tight or substantially fluid-tight manner in a housing
    • G01F3/10—Geared or lobed impeller meters

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To reduce a fluid leaking from a gap between the counter surfaces of rotors and a case, by forming grooves and small bottomed holes for labyrinth effect in the counter surfaces of the rotors and case. CONSTITUTION:In a case 1, oval gear type rotors 4 and 5 are fitted around fixed shafts 2 and 3, and through a magnet 9 fitted atop of a rotation transmitting-out shaft 8 stuck to the rotor 5, a magnet 10 coupling magnetically with the magnet 9, a rotary frame 11, a speed reduction machine 12, the quantity of flow is displayed on an indication device 13. Further, many grooves 18 are made successively in the axial flanks of the rotors 4 and 5 and then from a high-pressure side intake 14 to a low-pressure side outlet 16 expands rapidly to lose its energy by Labyrinth effect which provides a pressure drop, thus reducing the leakage of the fluid from the gap.
JP14954180A 1980-10-24 1980-10-24 Prevention device for leakage of twin rotor type flow meter Pending JPS5773624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14954180A JPS5773624A (en) 1980-10-24 1980-10-24 Prevention device for leakage of twin rotor type flow meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14954180A JPS5773624A (en) 1980-10-24 1980-10-24 Prevention device for leakage of twin rotor type flow meter

Publications (1)

Publication Number Publication Date
JPS5773624A true JPS5773624A (en) 1982-05-08

Family

ID=15477392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14954180A Pending JPS5773624A (en) 1980-10-24 1980-10-24 Prevention device for leakage of twin rotor type flow meter

Country Status (1)

Country Link
JP (1) JPS5773624A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4911010A (en) * 1988-08-12 1990-03-27 Flowdata, Inc. Fluid flowmeter
JPH02176526A (en) * 1988-09-16 1990-07-09 Behr Ind Equip Inc Electrostatically painting apparatus having optical type flow rate detection meter
US4996888A (en) * 1989-08-09 1991-03-05 Flowdata, Inc. Fluid flowmeter
US5058709A (en) * 1989-06-09 1991-10-22 Joseph Vogele Ag Device for the dosing of lubricants
US5325715A (en) * 1989-08-09 1994-07-05 Flowdata, Inc. Fluid flowmeter
EP2018525A4 (en) * 2006-05-12 2013-02-20 Osakeyhtioe Skf Aktiebolag INSTRUMENT OF MEASUREMENT WITH OVAL GEAR
JP2026511686A (en) * 2023-03-31 2026-04-14 北京通嘉宏瑞科技有限公司 Roots pump rotor and Roots pump with pneumatic seal groove

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51121809A (en) * 1975-04-18 1976-10-25 Anretsuto:Kk The improvement of a roots type rotor
JPS51137106A (en) * 1975-05-22 1976-11-26 Anretsuto:Kk Improvement of a roots-type rotor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51121809A (en) * 1975-04-18 1976-10-25 Anretsuto:Kk The improvement of a roots type rotor
JPS51137106A (en) * 1975-05-22 1976-11-26 Anretsuto:Kk Improvement of a roots-type rotor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4911010A (en) * 1988-08-12 1990-03-27 Flowdata, Inc. Fluid flowmeter
JPH02176526A (en) * 1988-09-16 1990-07-09 Behr Ind Equip Inc Electrostatically painting apparatus having optical type flow rate detection meter
US5058709A (en) * 1989-06-09 1991-10-22 Joseph Vogele Ag Device for the dosing of lubricants
US4996888A (en) * 1989-08-09 1991-03-05 Flowdata, Inc. Fluid flowmeter
US5325715A (en) * 1989-08-09 1994-07-05 Flowdata, Inc. Fluid flowmeter
EP2018525A4 (en) * 2006-05-12 2013-02-20 Osakeyhtioe Skf Aktiebolag INSTRUMENT OF MEASUREMENT WITH OVAL GEAR
JP2026511686A (en) * 2023-03-31 2026-04-14 北京通嘉宏瑞科技有限公司 Roots pump rotor and Roots pump with pneumatic seal groove

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