SYSTEM FOR REVERSE OSMOSIS
    4.
    发明公开

    公开(公告)号:EP4342573A1

    公开(公告)日:2024-03-27

    申请号:EP22197408.2

    申请日:2022-09-23

    申请人: Danfoss A/S

    摘要: The present invention relates to a system for reverse osmosis, RO, comprising a first RO stage (10) with a first feed inlet (11), a first brine outlet (12), and a first permeate outlet (13); a second RO stage (20) with a second feed inlet (21), a second brine outlet (22), and a second permeate outlet (23); and a pressure exchanger, PE, (40) connected between the second brine outlet (22) and the first feed inlet (11), wherein a first pressure difference Δp 1 between the first brine outlet (12) and the second feed inlet (21) corresponds to a second pressure difference Δp 2 between the second brine outlet (22) and the pressure exchanger (40). The invention further relates to a method for operating such a system for reverse osmosis (100).

    HYDRAULIC UNIT WITH COMBINED PNEUMATIC/SERVOMOTOR ACTION AND RELATED USE

    公开(公告)号:EP3875781A1

    公开(公告)日:2021-09-08

    申请号:EP19879135.2

    申请日:2019-10-23

    摘要: The present patent of invention relates to a hydraulic unit (U) with a pneumatic cylinder (15) that works jointly with a servomotor (M), together with a ball screw (29) to together move a hydraulic piston pump (8), made up of a hydraulic plunger (7), with related sealing elements to prevent oil leaks, noise, metal-on-metal attrition and loss of efficiency, that is moved upwards and downwards using a ball screw (29) and a pneumatic cylinder (15), jointly with a servomotor (M) which, when moved, pushes the pressurized oil outwards while filling the opposite hydraulic chamber with an oil suction movement, the pumped oil entering a hydraulic pressure accumulator (25), where it remains idle to be used when required and being supplied by the up/down movement of the piston, generating continuous pumping, which is automatically stopped when the hydraulic pressure accumulator (25) is full and has reached the predetermined hydraulic pressure. With regard to the field of application, the invention is intended to be used to move hydraulic actuators in a variety of different machines and equipment.

    HYDRAULISCHER DRUCKÜBERSETZER UND VERFAHREN ZUR HERSTELLUNG EINER AXIALEN DRUCKSPANNUNG IM HOCHDRUCKZYLINDER

    公开(公告)号:EP3636936A1

    公开(公告)日:2020-04-15

    申请号:EP19196149.9

    申请日:2019-09-09

    申请人: BFT GmbH

    发明人: TRIEB, Franz

    IPC分类号: F15B3/00

    摘要: Die Erfindung betrifft einen Druckübersetzer bestehend im Wesentlichen aus einem Niederdruckteil (A) und beidseitig gegenüberliegend jeweils einem Hochdruckteil (B,B') mit jeweils einer mittels eines Hydraulikkolbens (13) bewegbaren Hochdruckkolbenstange (11).
    Um auf einfache Weise eine permanente Druckvorspannung in den Dichtungsbereichen zu ermöglichen, ist erfindungsgemäß vorgesehen, dass der jeweilige Hochdruckzylinder (1) in einer Spannhülse (6), welche einerseits mit dem Hydraulikzylinder (14) und andererseits mit dem Ventilkörper (2) in lösbarer Verbindung steht, angeordnet ist und im Hydraulikzylinder (14) für jeden Hochdruckzylinder (1) ein Spannkolben (7) axial verschiebbar und durch Druckmittel (8) festlegbar vorliegt.