GB2415481A - Fuel valve restricting air ingress - Google Patents
Fuel valve restricting air ingress Download PDFInfo
- Publication number
- GB2415481A GB2415481A GB0421939A GB0421939A GB2415481A GB 2415481 A GB2415481 A GB 2415481A GB 0421939 A GB0421939 A GB 0421939A GB 0421939 A GB0421939 A GB 0421939A GB 2415481 A GB2415481 A GB 2415481A
- Authority
- GB
- United Kingdom
- Prior art keywords
- float
- fuel
- valve
- level
- cage
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 18
- 239000012530 fluid Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0245—Construction of housing; Use of materials therefor of lift valves with ball-shaped valve members
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/04—Check valves with guided rigid valve members shaped as balls
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/07—Construction of housing; Use of materials therefor of cutting-off parts of tanks, e.g. tank-cars
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K33/00—Floats for actuation of valves or other apparatus
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Float Valves (AREA)
Abstract
A float 10 can move up and down an encapsulating cage 12 and is guided by a rail 16 so that the valve seat 14 is sealed by said float when the fuel level local to the valve drops sufficiently, thus eliminating the need for a base tank in a tracked military vehicle.
Description
1 2415481
FUEL NO-AIR VALVE
This invention relates to a fuel no-air valve.
The vast majority of tracked military vehicles utilise the 'pannier/base tank' design whereby main fuel is stored in the upper levels of the vehicle (usually in the pannier structures over the track assemblies), and is fed down to a base tank unit, which then supplies the engine. In this configuration, the supply of fuel to the base tank is always maintained and hence air ingress is prevented.
With more recent developments in vehicle design, the pannier system has been discarded as more equipment is crammed into existing hulls. This has given rise to single tank units without the advantage of a base tank. Consequently, a new method of allowing the passage of fuel only, at all vehicle attitudes whilst preventing air ingress, is now required.
According to the present invention there is provided a fuel no-air valve comprising a float designed to seal the valve seat when the fuel level local to the valve falls to uncover it. This will prevent air being drawn through to the engine and eliminate the requirement for a base tank. Design features include the following: Predominantly vertical attitude of the valve seating face, prevents inadvertent 'suck- down' of the ball float due to vortex generation during low fluid level conditions.
A combination of slightly canted valve face and float guide rail arrangement that ensures the ball seats on the valve face under it's own mass, at moments of complete fluid loss due to the vehicle negotiating uneven terrain.
An open frame construction for the float cage and base to allow maximum clearance for returning fluid flow to rapidly unseat the ball.
These design features will allow rapid response to both fluid and nonfluid conditions by utilising both buoyancy and float mass for effective operation. Having only one moving part simplifies the design allowing it to be both compact and robust for emloyment in varied environments.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which: Figure 1 shows the float 10, float cage 12, valve seat 14, and guide rail 16, with the float in position at the top of the cage where it would be with an adequate fuel level.
Figure 2 shows the float at the bottom of the cage sealing the valve seat when the fuel falls to a predetermined level.
Claims (1)
1. A fuel no-air valve comprising of a float encapsulated by a cage, or other suitable structure, that allows the float to move up and down according to its buoyancy or mass such that the float seals the valve seat when the fuel level is below a predetermined level and opens it when the fuel level is above the predetermined level, thus eliminating the need for a base tank in a tracked military vehicle.
2. A fuel no-air valve as in claim I, where a combination of valve face shape and guide rail arrangement enhances the float operation.
Amendments to the claims have been filed as follows
1. A fuel valve comprising of a float encapsulated by a cage, or other suitable structure, that allows the float to move up and down according to its buoyancy or mass such that said float seals a vertically orientated valve seat when the fuel level is below a predetermined level and opens it when the fuel level is above the predetermined level. .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0414002.6A GB0414002D0 (en) | 2004-06-23 | 2004-06-23 | Fuel no air valve |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0421939D0 GB0421939D0 (en) | 2004-11-03 |
| GB2415481A true GB2415481A (en) | 2005-12-28 |
| GB2415481B GB2415481B (en) | 2006-05-31 |
Family
ID=32799982
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0414002.6A Ceased GB0414002D0 (en) | 2004-06-23 | 2004-06-23 | Fuel no air valve |
| GB0421939A Expired - Fee Related GB2415481B (en) | 2004-06-23 | 2004-10-04 | Fuel valve |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0414002.6A Ceased GB0414002D0 (en) | 2004-06-23 | 2004-06-23 | Fuel no air valve |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB0414002D0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11473696B1 (en) * | 2019-07-31 | 2022-10-18 | Jeremy Hohnbaum | System and apparatus for controlling fluid flow in drainage systems with a cage device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4304206A (en) * | 1979-09-28 | 1981-12-08 | Chrysler Corporation | Fuel tank vapor condensate trap |
| GB2184827A (en) * | 1985-11-15 | 1987-07-01 | Smith Corp A O | Condensate discharge device for combustion apparatus |
| US6058964A (en) * | 1997-12-15 | 2000-05-09 | Walbro Corporation | Multi-level fuel pickup |
| EP1306599A2 (en) * | 2001-10-09 | 2003-05-02 | United Technologies Corporation | Gas flow stop device |
-
2004
- 2004-06-23 GB GBGB0414002.6A patent/GB0414002D0/en not_active Ceased
- 2004-10-04 GB GB0421939A patent/GB2415481B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4304206A (en) * | 1979-09-28 | 1981-12-08 | Chrysler Corporation | Fuel tank vapor condensate trap |
| GB2184827A (en) * | 1985-11-15 | 1987-07-01 | Smith Corp A O | Condensate discharge device for combustion apparatus |
| US6058964A (en) * | 1997-12-15 | 2000-05-09 | Walbro Corporation | Multi-level fuel pickup |
| EP1306599A2 (en) * | 2001-10-09 | 2003-05-02 | United Technologies Corporation | Gas flow stop device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11473696B1 (en) * | 2019-07-31 | 2022-10-18 | Jeremy Hohnbaum | System and apparatus for controlling fluid flow in drainage systems with a cage device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0414002D0 (en) | 2004-07-28 |
| GB0421939D0 (en) | 2004-11-03 |
| GB2415481B (en) | 2006-05-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20081004 |