Energy-saving method and energy-saving device for a pressure-controlled hydraulic system

A pressure control, hydraulic system technology, applied in fluid pressure actuating devices, servo motor components, mechanical equipment, etc., can solve problems such as wasted energy, large fluctuation range, and unstable system pressure.

Inactive Publication Date: 2017-05-10
佛山市佛锐达机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing above-mentioned systems mainly have: 1. The pressure entering the follow-up system is not stable enough, and its fluctuation range is relatively large; 2. The outlet of the variable displacement pump is always in a high-pressure state, wasting energy

Method used

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  • Energy-saving method and energy-saving device for a pressure-controlled hydraulic system
  • Energy-saving method and energy-saving device for a pressure-controlled hydraulic system

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Embodiment Construction

[0009] In the following, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments, so as to understand more clearly the technical idea claimed in the present invention.

[0010] First, this embodiment provides an energy-saving method for a pressure-controlled hydraulic system. When the inlet hydraulic pressure of all accumulators is greater than the pressure value set by the adjustable pressure detection valve connected to the accumulator inlet, the adjustable pressure detection valve The action of the valve makes the displacement pump reduce the displacement and be in a low-pressure state. At the same time, the oil outlet of the variable pump is cut off from the oil inlet of the accumulator; when the oil pressure at the inlet of any accumulator is When the pressure value is higher, the adjustable pressure detection valve acts to increase the displacement of the variable pump, and automatically supplements the pressu...

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Abstract

The invention provides an energy conversation device for pressure control hydraulic systems. The energy conversation device comprises a variable pump, a fuel tank, one or more energy accumulators communicated with the oil outlet of the variable pump, a one-way valve arranged between each energy accumulator and the variable pump, a reversing valve, a pressure control valve, an overflow valve, a damping hole and oil pressure control assemblies correspondingly communicated with the energy accumulators. When a valve core of the pressure control valve carries out pushing, the position on the left of the pressure control valve acts, and the oil outlet of the variable pump is communicated with the right cavity of a variable piston in the variable pump through the pressure control valve so that the displacement of the variable piston can be reduced. According to the scheme, the oil pressure control assemblies communicated with the energy accumulators are similar in structure, and when the pressure of the energy accumulators reaches the set value, the variable pump varies to lower the outlet pressure by controlling the oil pressure control assemblies; when the pressure of any energy accumulator is lowered to be no greater than the set value, the variable pump fast recovers to supplement oil to the systems.

Description

technical field [0001] The invention relates to the technical field of hydraulic control, in particular to an energy-saving method and an energy-saving device for a pressure-controlled hydraulic system. Background technique [0002] See attached figure 1 As shown, the existing common pressure control hydraulic system generally includes variable pump 1, variable piston 2, reversing valve 3, overflow valve 4, pressure control valve 5, damping hole 6, check valve 7, accumulator 8. Fuel tank 9 and damping hole 13. In this system, when the reversing valve 3 is de-energized, it plays the role of unloading and starting, and the pressure control hydraulic system can work normally only when it is energized. The combination of pressure control valve 5 and relief valve 4 can limit the maximum pressure at the outlet of variable displacement pump 1; At the same time, the variable displacement piston 2 makes the variable mechanism of the variable pump 1 at the maximum swing angle under...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B1/02F15B13/02
Inventor 杨贝贝邓贲
Owner 佛山市佛锐达机电科技有限公司
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