GB755429A - Pumps - Google Patents
PumpsInfo
- Publication number
- GB755429A GB755429A GB259054A GB259054A GB755429A GB 755429 A GB755429 A GB 755429A GB 259054 A GB259054 A GB 259054A GB 259054 A GB259054 A GB 259054A GB 755429 A GB755429 A GB 755429A
- Authority
- GB
- United Kingdom
- Prior art keywords
- impeller
- stage
- impellers
- common chamber
- fuel
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/001—Preventing vapour lock
- F04D9/002—Preventing vapour lock by means in the very pump
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
755,429. Centrifugal and axial-flow pumps. PULSOMETER ENGINEERING CO., Ltd. Jan. 28, 1955 [Jan. 28, 1954], No. 2590/54. Class 110(1) [Also in Group XXVII] A pump for use with volatile or gas-containing liquids comprises at least two firststage impellers which discharge into a common chamber, one of these impellers being so disposed at or near the top of the common chamber that vapours can escape through it from the common chamber, and a second-stage impeller which receives liquid from a lower level in the common chamber. The second-stage impeller and the impeller or impellers of any subsequent stages may be mounted on the same shaft as at least one of the first-stage impellers. Separate driving motors may be provided. Fig. 1 shows a fuel pump mounted in an aircraft fuel tank 10 and comprising firststage impellers 12, 13 and a second-stage impeller 14 mounted on a common shaft 16 driven by an electric motor 17. Under normal conditions, impeller 13 is submerged while impeller 12 is generally above the fuel level. Any gas or vapour bubbles rise to the top of the common chamber 18 and escape through the impeller 12. Under negative gravity conditions, the fuel gravitates to the top of the tank 10 and the functions of the impellers 12 and 13 are interchanged. Vapour separators may be provided on or in front ef the first-stage impellers. In a modification, Fig. 3, a further first-stage impeller 21 is mounted on a shaft 22 driven through gearing 23 from the motor 17a, to permit operation under the zero gravity condition shown. Fig. 4 shows a pump mounted by means of a flange 26 in an opening in the bottom 19b of an aircraft fuel tank. The first-stage impellers 12b, 13b and the second-stage impeller 14b are driven by a hydraulic or electric motor' or an air turbine 17b, preferably through flexible couplings 37, 38, the cable or pipe 30 supplying the motor or turbine being led in through the flange 26. Each impeller 12b, 13b has a vapour discharge passage 27 at its periphery. Inlet strainers 28 are provided. The fuel passes from the first stages to the second stage by way of a chamber 18b and is discharged from the second stage through a delivery pipe 15b. The motor may be mounted above the pump or below the flange 26; speedreduction or other gearing may be provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB259054A GB755429A (en) | 1954-01-28 | 1954-01-28 | Pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB259054A GB755429A (en) | 1954-01-28 | 1954-01-28 | Pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB755429A true GB755429A (en) | 1956-08-22 |
Family
ID=9742251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB259054A Expired GB755429A (en) | 1954-01-28 | 1954-01-28 | Pumps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB755429A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2982986A (en) * | 1956-09-19 | 1961-05-09 | Gen Electric | Vacuum cleaner with improved fan arrangement |
DE2745762A1 (en) * | 1977-10-12 | 1979-04-19 | Bosch Gmbh Robert | Two stage IC engine fuel pump - has both stages mounted on common bearing sleeve to transmit drive between them |
DE2745760A1 (en) * | 1977-10-12 | 1979-04-19 | Bosch Gmbh Robert | FUEL FEED PUMP |
DE2745800A1 (en) * | 1977-10-12 | 1979-04-26 | Bosch Gmbh Robert | PROCEDURE FOR PUMPING FUEL UNDER PRESSURE AND FUEL FEED PUMP FOR CARRYING OUT THE PROCEDURE |
-
1954
- 1954-01-28 GB GB259054A patent/GB755429A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2982986A (en) * | 1956-09-19 | 1961-05-09 | Gen Electric | Vacuum cleaner with improved fan arrangement |
DE2745762A1 (en) * | 1977-10-12 | 1979-04-19 | Bosch Gmbh Robert | Two stage IC engine fuel pump - has both stages mounted on common bearing sleeve to transmit drive between them |
DE2745760A1 (en) * | 1977-10-12 | 1979-04-19 | Bosch Gmbh Robert | FUEL FEED PUMP |
DE2745800A1 (en) * | 1977-10-12 | 1979-04-26 | Bosch Gmbh Robert | PROCEDURE FOR PUMPING FUEL UNDER PRESSURE AND FUEL FEED PUMP FOR CARRYING OUT THE PROCEDURE |
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