GB993668A - Improvements in or relating to electric motor and pump units - Google Patents
Improvements in or relating to electric motor and pump unitsInfo
- Publication number
- GB993668A GB993668A GB15950/62A GB1595062A GB993668A GB 993668 A GB993668 A GB 993668A GB 15950/62 A GB15950/62 A GB 15950/62A GB 1595062 A GB1595062 A GB 1595062A GB 993668 A GB993668 A GB 993668A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- pump
- motor
- liquid
- bell
- 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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
993,668. Centrifugal pumps. HOWARD TYLER & CO. Ltd. April 17, 1963 [April 26, 1962], No. 15950/62. Heading F1C. [Also in Division H2] An electric motor and pump unit of the type in which the motor and pump are enclosed in a casing forming an upper, motor chamber and a lower, pump chamber, the chambers being joined by a relatively narrow neck portion through which extends, with clearance, a shaft carrying the motor rotor at its upper end and the pump rotor at its lower end and the liquid in the pump chamber having access to the motor chamber by way of an annular passage formed by the clearance gap between the shaft and the neck portion of the casing, is characterized in that there is provided, at one end of the annular passage, a liquid trap including a downwardly directed wall surrounding the mouth of the passage, the arrangement being such that in order to pass from the lower chamber to the upper chamber through the annular passage, liquid must pass downwardly below the lower edge of the wall. The pump unit shown comprises a pump chamber 2 connected to a motor chamber 1 by a neck 3. Hot liquid rising through the annular space 5 around the pump shaft 4 passes through a tubular baffle 12 into the space within a bell 11 carried by the shaft, and to escape from this space must pass downwardly below the lower edge of the bell and through the cooler liquid surrounding the bell and baffle. This prevents overheating of the motor by the hot liquid. Alternatively or additionally, a bell 13 and a baffle 14 are provided at the lower end of the annular space 5. In this case, hot liquid passing from the pump chamber 2 to the annular space 5 must pass below the lower edge of the baffle 14 and therefore through the cooler liquid trapped within the bell 13. Heat conduction through the bells, baffles and shaft is reduced by layers 11 A, 12A, 13A, 14A of insulating material such as impregnated asbestos, held in place by metal cladding 11B, 12B, 13B, 14B.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB15950/62A GB993668A (en) | 1962-04-26 | 1962-04-26 | Improvements in or relating to electric motor and pump units |
| US275129A US3186345A (en) | 1962-04-26 | 1963-04-23 | Means for preventing or limiting interchange of liquids between communicating vessels |
| DE19631528865 DE1528865A1 (en) | 1962-04-26 | 1963-04-26 | Submersible pump and electric motor unit |
| CH528863A CH406857A (en) | 1962-04-26 | 1963-04-26 | Submersible electric motor-pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB15950/62A GB993668A (en) | 1962-04-26 | 1962-04-26 | Improvements in or relating to electric motor and pump units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB993668A true GB993668A (en) | 1965-06-02 |
Family
ID=10068481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15950/62A Expired GB993668A (en) | 1962-04-26 | 1962-04-26 | Improvements in or relating to electric motor and pump units |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3186345A (en) |
| CH (1) | CH406857A (en) |
| DE (1) | DE1528865A1 (en) |
| GB (1) | GB993668A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT973416B (en) * | 1972-11-07 | 1974-06-10 | Cnen | MULTI-CELL HYDRAULIC SEAL FOR CENTRIFUGAL PUMPS FOR CIRCULATION OF SODIUM IN NUCLEAR POWER STATIONS |
| NL168311C (en) * | 1978-03-01 | 1982-03-16 | Neratoom | SEALING TRANSIT. |
| US4743197A (en) * | 1987-05-08 | 1988-05-10 | Allegheny Ludlum Corporation | High temperature fan plug apparatus |
| US5232350A (en) * | 1991-06-11 | 1993-08-03 | Maytag Corporation | Motor driven pump assembly with a protective cover |
| DE4339060A1 (en) * | 1993-11-16 | 1995-05-18 | Borsig Babcock Ag | Gear compressor for the compression of oxygen |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1346924A (en) * | 1919-06-13 | 1920-07-20 | Arthur R Wilfley | Centrifugal pump |
| US2381823A (en) * | 1942-04-17 | 1945-08-07 | Bour Harry E La | Liquid sealed pump |
| US2677328A (en) * | 1949-12-30 | 1954-05-04 | Gen Electric | Centrifugal pump for high temperature liquids |
-
1962
- 1962-04-26 GB GB15950/62A patent/GB993668A/en not_active Expired
-
1963
- 1963-04-23 US US275129A patent/US3186345A/en not_active Expired - Lifetime
- 1963-04-26 CH CH528863A patent/CH406857A/en unknown
- 1963-04-26 DE DE19631528865 patent/DE1528865A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CH406857A (en) | 1966-01-31 |
| DE1528865A1 (en) | 1969-10-30 |
| US3186345A (en) | 1965-06-01 |
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