GB1339262A - Apparatus for maintaining a pre-determined pressure differential across lip seals which are fitted between a ships sterntube and the sea - Google Patents
Apparatus for maintaining a pre-determined pressure differential across lip seals which are fitted between a ships sterntube and the seaInfo
- Publication number
- GB1339262A GB1339262A GB1339262DA GB1339262A GB 1339262 A GB1339262 A GB 1339262A GB 1339262D A GB1339262D A GB 1339262DA GB 1339262 A GB1339262 A GB 1339262A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- chamber
- lip seals
- pressure differential
- pressure
- 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
1339262 Seals HARLAND & WOLFF Ltd 19 April 1971 [3 April 1970] 16044/70 Heading F2B Apparatus for maintaining a pressure differential in a ship's sterntube comprises a chamber 13 inboard of a series of lip seals 10 which are located adjacent the outer end of the sterntube, a reservoir 16 for feeding oil via lines 17, 18 to the chamber, a pump 22 for pumping oil from the chamber to a position between a pair of the lip seals to establish a pressure differential between the oil in the chamber and the oil in the lip seals, and a pressure differential cell 20 which is connected to the oil feed line 17, 18 from the reservoir to restore the oil pressure in the chamber and the required pressure differential should the pressures in the chamber or lips seals increase above or decrease below the predetermined level. The pump 22 continuously pumps the oil from the chamber 13 to the lip seals 10 via sight flow indicators 41. The pressure differential cell 20 is connected at one side to the oil pressure at the lip seals 10 and at the other side to the oil pressure in the chamber 13 which is controlled by the level of the head of oil at "A" in pipe 25; the cell 20 operates valves 32, 33 such that when the pressure in the chamber increases, the valve 33 is opened to direct oil to a spill tank 27 and when the pressure in the chamber decreases due to leakage of oil past both the lip seals 10 to the sea or lip seals 15 to the bilge, the valve 32 is opened to allow make-up oil to pass from the reservoir 16 into the system. If when the valve 32 is closed, the pump 22 fails and the head level "A" falls to below the sea water level, a pressure differential cell 43 opens a by-pass 17a to restore the head level to "A". An oil cooler 35 and pump 36 may be provided for cooling the oil in the system and a hand pump 39 for draining oil from the inboard side of the lip seals 10.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1604470 | 1971-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1339262A true GB1339262A (en) | 1973-11-28 |
Family
ID=10070129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1339262D Expired GB1339262A (en) | 1971-04-19 | 1971-04-19 | Apparatus for maintaining a pre-determined pressure differential across lip seals which are fitted between a ships sterntube and the sea |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1339262A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2827026A1 (en) * | 1977-12-27 | 1979-06-28 | Niigata Engineering Co Ltd | SEALING DEVICE |
| GB2140102A (en) * | 1983-05-06 | 1984-11-21 | Boc Group Plc | Improvements in shaft seals |
| CN103195930A (en) * | 2013-04-19 | 2013-07-10 | 昆山聚贝机械设计有限公司 | Mechanical seal cooling and purifying device for bead mills |
| CN114110408A (en) * | 2021-11-29 | 2022-03-01 | 南京高精船用设备有限公司 | Forced lubrication cooling system |
-
1971
- 1971-04-19 GB GB1339262D patent/GB1339262A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2827026A1 (en) * | 1977-12-27 | 1979-06-28 | Niigata Engineering Co Ltd | SEALING DEVICE |
| GB2140102A (en) * | 1983-05-06 | 1984-11-21 | Boc Group Plc | Improvements in shaft seals |
| CN103195930A (en) * | 2013-04-19 | 2013-07-10 | 昆山聚贝机械设计有限公司 | Mechanical seal cooling and purifying device for bead mills |
| CN114110408A (en) * | 2021-11-29 | 2022-03-01 | 南京高精船用设备有限公司 | Forced lubrication cooling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |