​Supercharger is essentially a hydraulic amplifier, in the hydraulic system, if the entire system needs low pressure, and a local or a branch needs high pressure, can use the supercharger, so that the local oil circuit of the system or an actuator to obtain several times higher than the working pressure of the hydraulic pump high-pressure oil, to meet the needs of the local working mechanism, without having to set the price of the more expensive high-pressure oil pump. The system still operates at a low pressure, which reduces energy consumption, reduces equipment, and simplifies the system.
Commonly used supercharger is generally divided into single action and double action two kinds, single action supercharger can only discontinuous output high pressure oil, double action supercharger can continuously output high pressure oil, their common characteristics are composed of low pressure cylinder, high pressure cylinder, size piston, electromagnetic reversing valve and control electromagnetic reversing valve signaling device; Large piston end input low pressure oil, small piston end output high pressure oil. The commutation of the supercharger is achieved by the frequent change of the electromagnetic commutation valve. Solenoid valve frequent reversal, long working time will lead to overheating of the solenoid coil, not only affect the performance of the valve, resulting in high oil temperature, serious to shut down cooling, in addition, away from the power supply, still need to set a separate set of circuits for the supercharger.
How to simplify the system, research and explore the new ways of supercharger reversing, is a new topic that people have been paying attention to.
Composition of hydraulic control double acting supercharger
Hydraulic controlled double-acting supercharger is a self-reversing double-acting supercharger, which cancels the electromagnetic reversing valve of the traditional supercharger and the signaling device that controls the electromagnetic reversing valve. It adopts the cartridge valve as the main reversing valve and the two-four-way hydraulic reversing valve with small flow as the pilot valve. There are two small holes in the cylinder block of the low pressure cylinder, and the position relationship between the large piston and the small hole is used. Change the position of the pilot valve to control the action of the main valve to achieve the reversal of the supercharger.
The form of high-pressure cylinder piston (piston type or plunger type) and sealing method, and the type of seal, the diameter and number of tie rod and the strengthening sleeve of high-pressure cylinder need to be determined according to the output pressure of the supercharger and the size of the booster ratio.
The use and characteristics of hydraulic control double acting supercharger
Hydraulic control double acting supercharger is widely used in brake, clutch, high pressure test bench, high pressure jet, high pressure cutting, oil well water injection and engineering metallurgy, mining and other equipment.
Due to the cancellation of the electromagnetic reversing valve, the system is simplified, the scope of use is expanded, and the cartridge valve is adopted, which makes the structure simple, the work is stable and reliable, the processing cost is reduced, and the flow rate is increased. Therefore, this kind of supercharger can be used as a high pressure pump. With compressed air as the power source to obtain higher pressure oil, it is convenient to achieve gas-liquid conversion.



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