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System for charging and discharging at least one hydraulic accumulator

A technology of hydraulic accumulator and hydraulic system, applied in the direction of accumulator device, fluid pressure actuating system components, fluid pressure actuating device, etc., can solve the problems of damaging the separation element and not preventing the accumulator from unloading, etc. Achieve high switching dynamics and avoid damage

Active Publication Date: 2021-04-02
HYDAC FLUITECHNIK GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the unloading of the accumulator below the minimum value of the accumulator pressure is not prevented by the valve function
Risk of damage to the separating element of the relevant accumulator when the accumulator is unloaded below its pre-fill pressure

Method used

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  • System for charging and discharging at least one hydraulic accumulator
  • System for charging and discharging at least one hydraulic accumulator

Examples

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Embodiment Construction

[0017] figure 1 A wiring diagram of a first embodiment of the system according to the invention is shown, having a valve control device 12 connected to a hydraulic accumulator 10 . In order to serve as a temporary energy store, the hydraulic accumulator 10 is connected via the valve control device 12 to a hydraulic system 28 , 42 which has a hydraulic consumer, for example in the form of a working cylinder or a travel drive, The hydraulic consumers have associated control electronics (all not shown). In order to take the system pressure p s To supply the system with pressure, a hydraulic pump 11 is provided, which can be driven by a suitable device, for example a drive motor (not shown) of a mobile working device. In order to control the inflow and outflow of fluid from the accumulator connection 13 of the accumulator 10 , the valve control device 12 has a logic valve 14 which provides a non-return function.

[0018] The logic valve 14 corresponds in its design to the logic...

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Abstract

The invention relates to a system for charging and discharging at least one hydraulic accumulator (10) which can be connected to a valve control device (12). The valve control device (12) has at leastone logic valve (14). The system is characterized in that a shuttle valve (16) and a switchover valve (18) are also provided, and the valves (14, 16, 18) are connected to one another in such a way that the hydraulically actuatable switchover valve (18) compares the accumulator pressure (p A) with a minimum accumulator pressure (p A0), which can be set by means of the control pressure setting of the switchover valve (18).

Description

technical field [0001] The invention relates to a system for loading and unloading at least one hydraulic accumulator which can be connected to a valve control device, wherein the valve control device has at least one logic valve. In particular, the present invention relates to a system for controlling the state of charge of a hydraulic accumulator for the temporary storage and subsequent recovery of excess hydraulic energy in hydraulic mixing applications. Background technique [0002] In hydraulic systems, excess energy temporarily stored in hydraulic accumulators, such as braking energy or potential energy acquired during load reduction, can be recovered in order to support or relieve drive equipment for hydraulic consumers, such as drives or cylinders . For this reason, it is necessary to cut or release the connection of the accumulator to the hydraulic system according to the system state and loading state of the hydraulic accumulator, so as to load the accumulator wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/027
CPCF15B1/027F15B13/022F15B13/0401F15B13/028F15B1/0275F15B1/033F15B21/14F15B2211/3052
Inventor P·布鲁克C·斯道奇
Owner HYDAC FLUITECHNIK GMBH
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