FR2080025A5 - Multi-stage pump - using compression bellows for cryogenic and highly corrosive fluids - Google Patents

Multi-stage pump - using compression bellows for cryogenic and highly corrosive fluids

Info

Publication number
FR2080025A5
FR2080025A5 FR7006158A FR7006158A FR2080025A5 FR 2080025 A5 FR2080025 A5 FR 2080025A5 FR 7006158 A FR7006158 A FR 7006158A FR 7006158 A FR7006158 A FR 7006158A FR 2080025 A5 FR2080025 A5 FR 2080025A5
Authority
FR
France
Prior art keywords
stage
bellows
cryogenic
corrosive fluids
stage pump
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
FR7006158A
Other languages
French (fr)
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.)
Societe Europeenne de Propulsion SEP SA
Original Assignee
Societe Europeenne de Propulsion SEP SA
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 Societe Europeenne de Propulsion SEP SA filed Critical Societe Europeenne de Propulsion SEP SA
Priority to FR7006158A priority Critical patent/FR2080025A5/en
Application granted granted Critical
Publication of FR2080025A5 publication Critical patent/FR2080025A5/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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
    • F04B11/0016—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators with a fluid spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/088—Machines, pumps, or pumping installations having flexible working members having tubular flexible members with two or more tubular flexible members in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/10—Pumps having fluid drive

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Each stage of a multi-stage fluid-compression pump comprises a resilient bellows with a non-return valve inlet and opposite-acting non-return valve delivery, the suction of the second and following stages being connected to the delivery of the preceding stage. Pref. the bellows of each stage is enclosed in a chamber in which pressure is maintained equal to the inlet passage pressure of that stage. The use of bellows instead of reciprocating pistons eliminates frictional wear and subsequent leakage of dangerous and corrosive fluids, e.g. cryogenic fluids, nitric acid and nitrogen peroxide.
FR7006158A 1970-02-20 1970-02-20 Multi-stage pump - using compression bellows for cryogenic and highly corrosive fluids Expired FR2080025A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7006158A FR2080025A5 (en) 1970-02-20 1970-02-20 Multi-stage pump - using compression bellows for cryogenic and highly corrosive fluids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7006158A FR2080025A5 (en) 1970-02-20 1970-02-20 Multi-stage pump - using compression bellows for cryogenic and highly corrosive fluids

Publications (1)

Publication Number Publication Date
FR2080025A5 true FR2080025A5 (en) 1971-11-12

Family

ID=9051003

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7006158A Expired FR2080025A5 (en) 1970-02-20 1970-02-20 Multi-stage pump - using compression bellows for cryogenic and highly corrosive fluids

Country Status (1)

Country Link
FR (1) FR2080025A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588320A1 (en) * 1985-10-03 1987-04-10 Draegerwerk Ag PISTON DOSING PUMP

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2588320A1 (en) * 1985-10-03 1987-04-10 Draegerwerk Ag PISTON DOSING PUMP

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Legal Events

Date Code Title Description
ST Notification of lapse