Device with sealed inner chamber

Patent metadata

Field	Value
Publication number	US-2023274899-A1
Application number	US-202118006827-A
Country	US
Kind code	A1
Filing date	Jul 23, 2021
Priority date	Jul 28, 2020
Publication date	Aug 31, 2023
Grant date	—

Abstract

The disclosure includes a sealed device having a seal around an internal chamber, the seal having at least two closed-loop portions through which a through element extends.

First claim

1 . A device comprising:
an assembly of a first part and a second part defining a body of the device and delimiting an internal chamber, a through element extending through the internal chamber between the first part and the second part, and a seal of the internal chamber surrounding the latter, configured to produce a sealing against a plasma or a gas present in the internal chamber, the seal comprising at least two closed-loop portions which surround the through element and ensure a sealing along the latter, and at least two connection portions connecting the closed-loop portions and present between the first part and the second part and ensuring a sealing therebetween.

2 . The device according to claim 1 , wherein the closed-loop portions are diametrically opposite.

3 . The device according to claim 1 , wherein the closed-loop portions have a generally rectangular shape, and the through element has a generally rectangular section at least at the level of the closed-loop portions.

4 . The device according to claim 1 , wherein the section of the through element has rounded corners.

5 . The device according to claim 1 , wherein the seal is made of a flexible material, and wherein the closed-loop portions are oriented transversely to a plane containing the connection portions by pivoting therearound.

6 . The device according to claim 1 , wherein the device is an electrical cut-off device, the through element being a conductive element, the device comprising a movable piston in the internal chamber able to break the through element following its setting in motion.

7 . The device according to claim 6 , wherein the device is a pyrotechnic cut-off device which comprises a pyrotechnic initiator, the piston being able to move following the actuation of the pyrotechnic initiator.

8 . The device according to claim 6 , wherein the body is provided with a gas discharge orifice in communication with the internal chamber and able to discharge its contents, and with a gas introduction orifice in communication with the internal chamber and able to allow the introduction of a gas into the internal chamber, the gas introduction orifice and the gas discharge orifice being identical or distinct.

9 . The device according to claim 6 , wherein the internal chamber is filled with a dielectric gas whose breakdown voltage is greater than the breakdown voltage of the air at a reference pressure taken at 1 bar.

10 . The device according to claim 9 , wherein the dielectric gas comprises at least 2,3,3,3-tetrafluoro-2-(trifluoromethyl)propanenitrile(CF 3 ) 2 CFCN.

11 . The device according to claim 10 , wherein the dielectric gas further comprises at least one gas among dry air, nitrogen and carbon dioxide.

12 . The device according to claim 10 , wherein the molar content of 2,3,3,3-tetrafluoro-2-(trifluoromethyl)propanenitrile(CF 3 ) 2 CFCN in the dielectric gas is comprised between 10% and 60%.

13 . The device according to claim 9 , wherein the dielectric gas is able to pressurize the internal chamber to a pressure of at least 1 bar at a temperature of −40° C.

14 . A secure electrical installation comprising a cut-off device according to claim 6 and an electrical circuit connected to the through element.

15 . A vehicle comprising a secure electrical installation according to claim 14 .

16 . The device according to claim 2 , wherein the closed-loop portions have a generally rectangular shape, and the through element has a generally rectangular section at least at the level of the closed-loop portions.

17 . The device according to claim 2 , wherein the section of the through element has rounded corners.

18 . The device according to claim 3 , wherein the section of the through element has rounded corners.

19 . The device according to claim 2 , wherein the seal is made of a flexible material, and wherein the closed-loop portions are oriented transversely to a plane containing the connection portions by pivoting therearound.

20 . The device according to claim 3 , wherein the seal is made of a flexible material, and wherein the closed-loop portions are oriented transversely to a plane containing the connection portions by pivoting therearound.

Assignees

• Arianegroup Sas

Inventors

• Marlin Frédéric
• Lorenzon Romain

Classifications

• H01H39/006 Primary

  Opening by severing a conductor · CPC title

• H01H9/04

  Dustproof, splashproof, drip-proof, waterproof, or flameproof casings · CPC title

• H01H9/30

  Means for extinguishing or preventing arc between current-carrying parts · CPC title

• H01H1/66

  Contacts sealed in an evacuated or gas-filled envelope, e.g. magnetic dry-reed contacts · CPC title

• H01H9/042

  Explosion-proof cases · CPC title