Traitement en cours

Veuillez attendre...

Paramétrages

Paramétrages

Aller à Demande

1. WO2020112241 - CAPTEUR DE NIVEAU DE RÉSERVOIR DE PRODUIT D'EXTINCTION D'INCENDIE À PIÈGE MAGNÉTIQUE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

What is claimed is:

1. A fire suppressant storage device (20) comprising:

a tank (22) having a first port (40), a second port (70), and an interior (32) for storing fire suppressant;

a discharge assembly (46) mounted to the first port and comprising:

a discharge valve (48); and

a discharge conduit (50) at least partially within the interior and having: an interior; and

an exterior; and

a liquid level measurement assembly (82; 200; 250; 300; 400) mounted to the second port and comprising:

a tube (100) at least partially within the tank interior and having:

an interior sealed relative to the surrounding tank interior; and

an exterior;

a float (120; 220) surrounding the tube; and

a member (122; 222; 252; 302) axially movable within the tube interior, wherein:

one of the float and the member comprises an upper magnet (130; 230) and a lower

magnet (132; 232); and

the other of the float and the member magnetically cooperates with the upper magnet and the lower magnet to relatively axially trap the member to the float.

2. The fire suppressant storage device of claim 1 wherein:

the upper magnet and the lower magnet are polarized in the same direction.

3. The fire suppressant storage device of claim 2 wherein:

the same direction is a radial direction.

4. The fire suppressant storage device of claim 2 wherein:

the same direction is an axial direction.

5. The fire suppressant storage device of any previous claim wherein:

said one of the float and the member is the float; and

said other of the float and the member is the member.

6. The fire suppressant storage device of any previous claim wherein:

the member has a magnet (134; 234; 252; 310; 424) polarized anti-parallel to the upper magnet and the lower magnet.

7. The fire suppressant storage device of any previous claim wherein:

the upper magnet and the lower magnet are each a circumferential array of magnets.

8. The fire suppressant storage device of any previous claim wherein the liquid level measurement assembly further comprises:

means for measuring an axial position of the member.

9. The fire suppressant storage device of claim 8 wherein:

the means for measuring an axial position of the member comprises a longitudinal array of magnetic field sensors or magnetic switches (402).

10. The fire suppressant storage device of claim 8 wherein the means for measuring an axial position of the member is selected from the group consisting of:

a tensioned element (254) passing through an aperture in the member and means (260) for measuring a vibratory frequency of the tensioned element;

a tensioned element (312) passing through an aperture in the member and means (330) for measuring an electrical resistance of the tensioned element;

an optical position sensor (154); and

an ultrasonic position sensor (154).

11. The fire suppressant storage device of any previous claim further comprising:

said fire suppressant within the tank interior, the discharge conduit at least partially

immersed in the fire suppressant.

12. The fire suppressant storage device of claim 11 wherein:

said fire suppressant comprises a clean agent.

13. The fire suppressant storage device of claim 11 or claim 12 further comprising:

a compressed gas propellant in a headspace of the tank.

14. A method for using the fire suppressant storage device of any previous claim, the method comprising:

measuring a position of the member along the tube.

15. The method of claim 14 further comprising:

discharging the suppressant from the tank; and

during the discharging, repeating the measuring one or more times.

16. A method for manufacturing the fire suppressant storage device of any one of claim 1 to claim 13, the liquid level measurement assembly being a second liquid level measurement assembly, the method comprising:

removing a first liquid level measurement assembly from the second port, the first liquid level measurement assembly comprising:

a tube at least partially within the interior and having:

an interior sealed relative to the surrounding tank interior; and

an exterior;

a float surrounding the tube and having one or more magnets at only a single axial position; and

mounting the second liquid level measurement assembly to the second port, the float of the second liquid level measurement assembly comprising said upper magnet and said lower magnet.

17. A fire suppressant storage device (20) comprising:

a tank (22) having a first port (40), a second port (70), and an interior (32) for storing fire suppressant;

a discharge assembly (46) mounted to the first port and comprising:

a discharge valve (48); and

a discharge conduit (50) at least partially within the interior and having: an interior; and

an exterior; and

a liquid level measurement assembly (400) mounted to the second port and comprising: a tube (100) at least partially within the interior and having:

an interior sealed relative to the surrounding tank interior; and

an exterior;

a float (120) surrounding the tube; and

a member (424) axially moveable within the tube interior,

wherein:

the liquid level measurement assembly comprises a longitudinal array of magnetic field sensors or magnetic switches (402) within the tube;

the member has an aperture surrounding the array; and

the member has one or more magnets positioned to magnetically cooperate with one or more of the sensors for determining a position of the member along the array and with the float to relatively axially trap the member to the float.

18. The fire suppressant storage device of claim 17 wherein:

said magnetic field sensors or magnetic switches are present as Hall Effect sensors or Hall Effect switches.

19. The fire suppressant storage device of claim 17 or claim 18 wherein:

said magnetic switches are present as reed switches.