Reciprocating type pressurizer reversing device and application thereof

Abstract

The invention discloses a reciprocating type pressurizer reversing device. The reciprocating type pressurizer reversing device comprises hydraulic control reversing valves and further comprises a hydraulic control one-way valve set; pilot ports in the two sides of the hydraulic control reversing valves communicate with an oil supply pipeline through the hydraulic control one-way valve set; pilot ports of hydraulic control one-way valves in the hydraulic control one-way valve set are connected to control ports of piston cavities of pressurization cylinders; and the control ports of the pressurization cylinders are each provided with a one-way throttling valve. According to the reciprocating type pressurizer reversing device, hydraulic cylinders indirectly control reversing of the hydraulic control reversing valves through the hydraulic control one-way valve set, due to the fact that the amount of oil liquid required by the pilot ports of the hydraulic control one-way valves is small, the pressure loss in the piston cavities of a pressurizer is extremely small, and normal pressure output of the piston cavities of the pressurizer cannot be affected; and the control ports of the piston cavities are provided with the one-way throttling valves, on the premise that the opening speed of the hydraulic control one-way valves is not affected, the pilot ports of the hydraulic control one-way valves are enabled to return oil normally and smoothly so that the phenomenon that the hydraulic control one-way valves are closed prematurely due to the fact that the piston cavities are in a negative pressure state can be effectively avoided, and therefore smooth reversing of the hydraulic control reversing valves can be realized.

Description

technical field [0001] The invention relates to a hydraulic reversing device, in particular to a reciprocating supercharger reversing device and its application. Background technique [0002] Hydraulic boosters are now widely used in various fields of industrial production. Among them, the reciprocating booster has a high usage rate because it does not require electronic control. The reciprocating supercharger is matched with a special reversing device, such as a hydraulic control reversing device disclosed in Chinese patent 2015206405567. The pilot port on one side of the pilot valve is connected to the pilot oil, and the pilot port on the other side releases pressure, so as to achieve continuous reversing of the supercharger. However, in the actual operation process, the following problems are prone to occur: 1. During the reversing process of the reversing valve, The piston chamber corresponding to the pilot port on the reversing side is disconnected from the oil supply ...

AI Technical Summary

Problems solved by technology

The reciprocating supercharger is matched with a special reversing device, such as a hydraulic control reversing device disclosed in Chinese patent 2015206405567. The pilot port on one side of the pilot valve is connected to the pilot oil, and the pilot port on the other side releases pressure, so as to achieve continuous reversing of the supercharger. However, in the actual operation process, the following problems are prone to occur: 1. During the reversing process of the reversing valve, The piston chamber corresponding to the pilot port on the reversing side is disconnected from the oil supply pipeline, but the piston still keeps moving under the action of inertia. At this time, the above-mentioned piston chamber is in a negative pressure state, and the pilot oil in the hydraulic control check valve is instantly Pulling out causes the hydraulic control check valve to close early, the spool of the reversing valve is stuck in the neutral position, and the reversing fails; There is a lot of pilot oil, so when it changes direction, it is easy to cause pressure loss in the piston chamber of the supercharger, so that there will be pressure fluctuations at the output end, which will affect the supercharging effect

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