Abstract:
The invention relates to systems and methods for rapidly and isothermally expanding gas in a cylinder. The cylinder is used in a staged hydraulic-pneumatic energy conversion system and includes a gas chamber (pneumatic side) and a fluid chamber (hydraulic side) and a piston or other mechanism that separates the gas chamber and fluid chamber while allowing the transfer of force/pressure between each opposing chamber. The gas chamber of the cylinder includes ports that are coupled to a heat transfer subassembly that circulates gas from the pneumatic side and exchanges its heat with a counter flow of ambient temperature fluid from a reservoir or other source.
Abstract:
The invention relates to a plunger pressure accumulator (1), comprising: a shell (2); a plunger (3; 30) which is adapted to move relative to the shell (2) into an interior space of the shell (2). The space is divided into at least two subspaces (4 and 5), the first subspace (4) of which is suppliable with the hydraulic fluid of an external system and the second subspace (5) is provided with a pressurized gas. Between the plunger (3; 30) and the shell (2) is arranged a slide element (2a; 2b') upon which the plunger (3) is supported to move to a distance apart from an internal surface (4a) of the first subspace (4) and from an internal surface (5a) of the second subspace (5). The plunger pressure accumulator (1) is provided with at least one regenerator (7a; 7b; 8) which is stationary relative to the shell (2) or the plunger (3).
Abstract:
Le moteur- pompe hydraulique (1 ) à cylindrée fixe eu variable comprend un roter centrai de moteur-pompe (3) dans lequel et aménagé un cylindre hydraulique ( 14), ledit rotor (3) étant en contact étanche avec un distributeur d'entrée-sortie (43) reliant ledit cylindre (14) avec un bâti de moteur-pompe (2) tandis qu'un piston hydraulique (13) se meut dans ledit cylindre (14) pour pousser eu moyen d un poussoir guidé de piston hydraulique (18), d'un bras tangentiel (22) articulé dans ledit rotor central (3) et d'un rouleau antifriction de bras tangentiel (28) sur un rotor périphérique de moteur-pompe (29) synchronie en rotation avec le rotor central de moteur-pompe (3).
Abstract:
Certain examples present an improved compressed-air energy storage system. The system can include multiple sequential stages, in which accumulators are charged with air, which influences a hydraulic fluid to influence a pump/motor, and vice versa.
Abstract:
Изобретение относится к машиностроению и может быть использовано в гидравлических системах для передачи гидравлической энергии между рабочими жидкостями с разными температурами с пониженным теплообменом между ними. Задачей настоящего изобретения является создание гидравлического буфера для передачи гидравлической энергии между рабочими жидкостями с разными температурами с пониженным теплообменом между ними. Решение поставленной задачи достигается тем, что предложен гидравлический буфер, содержащий корпус, в котором выполнены по меньшей мере два отделенных друг от друга резервуара переменного объема, каждый из которых сообщается со своим портом в корпусе. Резервуары переменного объема отделены друг от друга по меньшей мере двумя подвижными разделителями, между которыми выполнен по меньшей мере один буферный резервуар, заполняемый рабочей жидкостью, предпочтительно, с низкой теплопроводностью, т.е. не превышающей 0,2 Вт/м/К.
Abstract:
A device for fluid power recuperation comprises a hydropneumatic accumulator (1) communicating via its gas port (7) with a gas receiver (8) which is made in the form of an aggregate of cells (9) communicating with the gas port of the accumulator via the collector (10), wherein the ratio of the receiver volume to the area of the cells internal surfaces does not exceed 0.01 m. At gas compression or expansion in the receiver the heat exchange between the gas and the cells walls occurs at reduced distances, with smaller temperature differentials, which increases reversibility of the heat exchange processes and recuperation efficiency. The aggregate of the receiver cells should be preferably embodied in a honeycomb structure where the partitions (17) between the cells are connected with one another and the outer shell (16) of the receiver.
Abstract:
A hydropneumatic accumulator with a flexible porous filler intended for fluid power recuperation in hydraulic systems with a high level of pulsations includes a shell where a gas port and a fluid port are connected, respectively, with a gas reservoir and a fluid reservoir of variable volume separated by a movable separator. The flexible porous filler fills the gas reservoir so that the separator movement reducing the gas reservoir volume compresses said filler. The filler is connected with internal walls of the gas reservoir with the possibility of stretching the filler at the separator movement increasing the volume of the gas reservoir. The accumulator contains means of protection of the filler boundary layer against rupture made with the possibility of reducing local deformations of the boundary filler layer in case of jerks of the separator. Development of residual deformations of the filler during multiple recuperation cycles and destruction at non-uniform motion of the separator with strong jerks are prevented.
Abstract:
Die vorliegende Erfindung betrifft einen hydropneumatischen Speicher, umfassend einen ersten Raum (2) sowie einen zweiten Raum (3), welche in einem Gehäuse (5) angeordnet sind, ein Trennelement (4), welches den ersten Raum (2) vom zweiten Raum (3) trennt, und einen Latentwärmespeicher (6), wobei der erste Raum (2) mit einem Gas gefüllt ist und wobei der Latentwärmespeicher (6) bei einer Komprimierung des Gases entstehende Wärme speichert.
Abstract in simplified Chinese:一种具挠性多孔填充物之液气压式积蓄器,其打算用于具有高度脉动(pulsation)的液压系统的流体动力回授(power recuperation),该积蓄器包括一壳体,一气体端口及一流体端口在该壳体处分别与被一活动的分隔件分开来的一可变体积的气体贮槽及一可变体积的流体贮槽相连接。该挠性多孔填充物填满该气体贮槽使得减小该气体贮槽体积的分隔件运动压缩该填充物。该填充物与该气体贮槽的内壁相连接,这可在增大该气体贮槽的体积的分隔件运动时拉伸该填充物。该积蓄器包含用来保护该填充物边界层不会破裂的机构,其可在该分隔件的勐然拉动的情况下减小该填充物边界层的局部变形。该填充物在多个回授循环期间之残留变形的发展及该分隔件在强劲的勐然拉动下的非均匀运动所造成的填充物的毁坏都可被防止。
Abstract in simplified Chinese:一种具有更好的效率及安全性之流体动力回设备可被使用在固定不动的应用及活动式的应用中,例如像是筑路机器,起重及输送设备以及液压复合式车辆。该设备包含至少一蓄压器(hydropneumatic accumulator)其透过气体端口与至少一气体接收器联通,该接收器被作成一组气室(cell)聚集体(aggregate)的形成,其透过该收集器与该蓄压器的气体端口联通,其中该接收器体积对该等气室内部表面的面积的比例不会超过0.01m。在该接收器内的气体压缩或膨胀时,该气体与该等气室之间的热交换在缩短的距离下以较小的温差来发生,这可提高热交换过程的可逆性及回收效率。该组接收器气室的聚集体(aggregate)较佳地应以一蜂巢式结构来体现,介于气室之间的隔板彼此相连接且与该接收器的外壳相连接。该等隔板承担一部分的负荷并让该外壳可卸除一些负荷,这可让该外壳被制造成较不强壮且较不笨重,且可制造不同形状与尺寸比的接收器,因而便于将该设备集成至包括车辆在内的既有的组合系统中。