US 12,077,871 B2
Pressure compensating system and a high-pressure electrolyser system comprising the same
Sumon Bishwas, Copenhagen (DK)
Assigned to Hymeth APS, (DK)
Appl. No. 17/040,014
Filed by Hymeth ApS, Soborg (DK)
PCT Filed Mar. 21, 2019, PCT No. PCT/EP2019/057172
§ 371(c)(1), (2) Date Sep. 21, 2020,
PCT Pub. No. WO2019/180184, PCT Pub. Date Sep. 26, 2019.
Claims priority of application No. 18163252 (EP), filed on Mar. 22, 2018.
Prior Publication US 2021/0017655 A1, Jan. 21, 2021
Int. Cl. C25B 9/05 (2021.01); C25B 1/04 (2021.01); C25B 11/02 (2021.01); C25B 15/02 (2021.01); C25B 15/08 (2006.01); F16K 17/19 (2006.01); F16K 31/02 (2006.01)
CPC C25B 1/04 (2013.01) [C25B 9/05 (2021.01); C25B 11/02 (2013.01); C25B 15/02 (2013.01); C25B 15/08 (2013.01); F16K 17/19 (2013.01); F16K 31/02 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A high-pressure electrolyser system comprising:
an electrolyser stack provided with an oxygen gas outlet and a hydrogen gas outlet and a water inlet for filling the electrolyser stack with water,
a water inlet valve configured to provide a one-way valve functionality of the water inlet, and
a pressure compensating system comprising:
a fluid pipe having a first fluid pipe portion and a second fluid pipe portion,
wherein the first fluid pipe portion has a first fluid inlet and a first fluid outlet for a first fluid flow,
wherein the second fluid pipe portion has a second fluid inlet and a second fluid outlet for a second fluid flow separate from the first fluid flow,
wherein the first fluid inlet is connected to the oxygen gas outlet and the second fluid inlet is connected to the hydrogen gas outlet, and
a pressure compensator arranged in the fluid pipe, separating the first fluid pipe portion and the second fluid pipe portion, wherein the pressure compensator is configured to move in the fluid pipe between the first fluid outlet and the second fluid outlet to thereby at least partially obstruct one of the first fluid outlet and the second fluid outlet in response to a pressure differences between the first fluid pipe portion and the second fluid pipe portion to provide pressure compensation between the first fluid pipe portion and the second fluid pipe portion,
wherein in a direction from the first fluid inlet directly to the second fluid inlet along an interior of the fluid pipe, the first fluid outlet is arranged after the first fluid inlet followed by the second fluid outlet followed by the second fluid inlet, and
wherein a first distance along the interior of the fluid pipe from the first fluid inlet directly to the second fluid inlet is greater than a second distance along the interior of the fluid pipe from the first fluid inlet directly to the first fluid outlet, and
wherein the pressure compensator is arranged:
closer to the first fluid outlet than the first fluid inlet, and
closer to the second fluid outlet than the second fluid inlet.