CN-117052730-B - Static ultrahigh hydraulic loading system taking high-pressure gas as power source

Abstract

The invention discloses a static ultra-high hydraulic loading system taking high-pressure gas as a power source, which comprises a high-pressure pneumatic source, a power conversion module, a pressurizing module and a high-pressure execution module, wherein the power conversion module comprises a pneumatic end and a hydraulic end, the pressurizing module comprises a low-pressure end, a high-pressure end and a pressurizing piston positioned between the low-pressure end and the high-pressure end, the pneumatic end of the power conversion module is connected with the high-pressure pneumatic source, the low-pressure end of the pressurizing module is connected with the hydraulic end of the power conversion module, the high-pressure end of the pressurizing module is connected with the hydraulic input end of the high-pressure execution module, and the pressure area of the low-pressure end is larger than that of the high-pressure end. The high-pressure gas is generated by the high-pressure pneumatic source, the high-pressure gas is used as starting power, the high-pressure gas is converted into liquid pressure by the power conversion module, and the liquid pressure is pressurized by the pressurizing module to obtain ultrahigh hydraulic power, so that the stability of hydraulic output is improved, the noise generated by power output is reduced, and the energy consumption is saved.

Inventors

• PU CHENGZHI

Assignees

• 衡阳华研工程科技有限公司

Dates

Publication Date

20260508

Application Date

20230818

Claims (8)

1. 1. The static ultra-high hydraulic loading system taking high-pressure gas as a power source is characterized by comprising a high-pressure pneumatic source, a power conversion module, a pressurizing module and a high-pressure execution module, wherein the high-pressure pneumatic source is used for outputting the high-pressure gas as starting power; The pneumatic end of the power conversion module is connected with a high-pressure pneumatic source, the low-pressure end of the pressurizing module is connected with the hydraulic end of the power conversion module, the high-pressure end of the pressurizing module is connected with the hydraulic input end of the high-pressure execution module, and the pressure area of the low-pressure end is larger than that of the high-pressure end; a pressure controller is arranged between the high-pressure pneumatic source and the pneumatic end of the power conversion module and is used for controlling the gas in the high-pressure gas storage tank to be circularly input to the pneumatic end of the power conversion module in a mode of single input of a set gas quantity; The pressure controller comprises a gas conveying cavity, a gas conveying piston, a gas inlet pipeline, a gas outlet pipeline and a gas conveying power assembly, wherein a piston valve of the gas conveying piston is movably arranged in the gas conveying cavity, the gas inlet pipeline and the gas outlet pipeline are connected with the gas conveying cavity, a piston rod of the gas conveying piston is connected with the gas conveying power assembly, the piston valve is in sealing butt joint with a circumferential annular surface of the inner wall of the gas conveying cavity, a gas conveying cavity is concavely arranged on the circumferential annular surface of the inner wall of the gas conveying cavity, and connecting ports of the gas inlet pipeline, the gas outlet pipeline and the gas conveying cavity are respectively arranged at a displacement start end and a displacement tail end of the piston valve.
2. 2. The static ultra-high hydraulic loading system taking high-pressure gas as a power source according to claim 1, wherein the power conversion module comprises a gas-liquid two-phase tank, a power conversion piston is arranged in the gas-liquid two-phase tank, the power conversion piston is movably arranged in a cavity of the gas-liquid two-phase tank, the cavity in the gas-liquid two-phase tank is sealed and divided into a gas cavity and a liquid cavity, the gas cavity is connected with the high-pressure gas source through a pressure controller, and the liquid cavity is connected with a low-pressure end of the pressurizing module.
3. 3. The static ultra-high hydraulic loading system taking high-pressure gas as a power source according to claim 2, wherein a first resetting piece for resetting the power conversion piston is arranged on the gas-liquid two-phase tank, and the first resetting piece is a gas release valve connected with the gas cavity.
4. 4. The static ultra-high hydraulic loading system taking high-pressure gas as a power source according to claim 1, wherein the pressurizing module comprises a pressurizing cavity and a pressurizing piston, the pressurizing cavity comprises a high-pressure cavity and a low-pressure cavity which are coaxially arranged, the diameter of the low-pressure cavity is larger than that of the high-pressure cavity, one end of the pressurizing piston slides in the high-pressure cavity, and the other end of the pressurizing piston slides in the low-pressure cavity.
5. 5. The high pressure gas powered static ultra high hydraulic loading system of claim 4, wherein the pressurizing module includes a second reset member for resetting the pressurizing piston, the second reset member including a reset oil injection line connected to the high pressure chamber.
6. 6. The static ultra-high hydraulic loading system taking high-pressure gas as a power source according to claim 4, wherein a pressurizing limiting assembly for limiting the power conversion module to continue pressurizing the pressurizing module is arranged in the pressurizing cavity, the pressurizing limiting assembly comprises a position signal sensor embedded in the pressurizing cavity and always positioned between two ends of the pressurizing piston, an initial position signal end and a tail end position signal end on the pressurizing piston are respectively arranged, the position signal sensor is in communication connection with the pressure controller, and the distance between the initial position signal end and the tail end position signal end is consistent with the maximum path of the pressurizing piston capable of moving in the pressurizing cavity.
7. 7. The static ultrahigh hydraulic loading system taking high-pressure gas as a power source according to claim 1, wherein the high-pressure execution module comprises a system execution cavity and a high-pressure execution piston movably arranged in the system execution cavity, the high-pressure execution piston divides the system execution cavity into an execution cavity and a reset cavity, and a piston rod of the high-pressure execution piston is connected with a high-pressure execution end.
8. 8. The high pressure gas powered static ultra-high hydraulic loading system of claim 7, wherein the high pressure execution module comprises a third reset member for resetting the high pressure execution piston, the third reset member comprising a high pressure oil drain pipe, a low pressure oil injection pipe connected to the execution chamber and the reset chamber, respectively, and an oil reservoir connected to the other ends of the high pressure oil drain pipe and the low pressure oil injection pipe simultaneously.

Description

Static ultrahigh hydraulic loading system taking high-pressure gas as power source Technical Field The invention relates to the technical field of hydraulic devices, in particular to a static ultrahigh hydraulic loading system taking high-pressure gas as a power source. Background The existing mechanical loading equipment mainly uses a servo pump to directly act on liquid to realize pressure output, a pressurizing device on the servo pump is a key part for determining hydraulic output, meanwhile, the power of the servo pump and the quality of the pressurizing device also determine the upper limit threshold value of the pressure output and the control precision of the pressure output, the high-pressure output servo pump and the high-precision control pressurizing device on the market are monopoly by foreign companies at present, the purchase cost and the maintenance cost are high, on the other hand, the servo pump using a motor as a power source is high in energy consumption and high in noise, and is unfavorable for energy conservation and environmental protection especially in a long-time loading environment, in addition, the maintenance period of the imported equipment and the replacement period of parts are extremely long, the equipment is unfavorable, and the quality of imported products, including pressure value, output stability, control precision, service life and the like, cannot meet the requirements of the high-performance loading equipment. In the patent application number CN201821604793.8, an ultra-high pressure hydraulic valve test bed is disclosed, which comprises an ultra-high pressure hydraulic valve test bed, a base frame, an operation table unit, an electrical control cabinet, a main pressure motor pump unit, a circulating cooling motor pump unit, an oil tank unit and an instrument board unit, wherein the ultra-high pressure hydraulic valve test bed comprises the base frame, the operation table unit, the electrical control cabinet, the main pressure motor pump unit, the circulating cooling motor pump unit, the oil tank unit and the instrument board unit, a base is arranged below the base frame, a groove is formed in one side of the base, and a sliding rod is connected in the groove in a sliding mode. It can be seen that the existing high hydraulic experiment platform generates high hydraulic power by taking the motor as a power source, and the servo motor with higher power is necessarily relied on for driving, so that the servo motor is high in acquisition cost, consumes more power and has larger noise. Aiming at the problems, a new ultrahigh hydraulic system needs to be developed so as to solve the problems of high cost, huge energy consumption and noise pollution caused by the adoption of a servo motor for driving an existing high hydraulic experimental platform. Disclosure of Invention In order to overcome the defects of the prior art, the invention provides the static ultrahigh hydraulic loading system with high-pressure gas as a power source, which can improve the stability of hydraulic output while guaranteeing high hydraulic power output, and has the advantages of low cost, less energy consumption and low noise. The technical scheme includes that the static ultrahigh hydraulic loading system with high-pressure gas as a power source comprises a high-pressure gas source, a power conversion module, a pressurizing module and a high-pressure execution module, wherein the high-pressure gas source is used for outputting high-pressure gas as starting power, the power conversion module is used for converting gas power into liquid pressure and comprises a pneumatic end and a hydraulic end, the pressurizing module is used for increasing hydraulic pressure and comprises a low-pressure end, a high-pressure end and a pressurizing piston positioned between the low-pressure end and the high-pressure end, the pneumatic end of the power conversion module is connected with the high-pressure gas source, the low-pressure end of the pressurizing module is connected with the hydraulic end of the power conversion module, the high-pressure end of the pressurizing module is connected with the hydraulic input end of the high-pressure execution module, and the pressure area of the low-pressure end is larger than that of the high-pressure end. Preferably, a pressure controller is arranged between the high-pressure pneumatic source and the pneumatic end of the power conversion module and is used for controlling the gas in the high-pressure gas storage tank to be circularly input to the pneumatic end of the power conversion module in a mode of single input of a set gas quantity. Preferably, the pressure controller comprises a gas conveying cavity, a gas conveying piston, a gas inlet pipeline, a gas outlet pipeline and a gas conveying power assembly, wherein a piston valve of the gas conveying piston is movably arranged in the gas conveying cavity, the gas inlet pipeline and the gas outlet pipeline are both connect