CN-117052749-B - Emulsion pump and emulsion motor-based test system and flow control method

CN117052749BCN 117052749 BCN117052749 BCN 117052749BCN-117052749-B

Abstract

The application provides a testing system and a flow control method based on an emulsion pump and an emulsion motor, and relates to the field of pump and motor testing, wherein a high-pressure pump outlet in the system enters a rod cavity of a hydraulic cylinder group through a first electric switch valve and a third electric switch valve, and a low-pressure pump outlet enters a rodless cavity of the hydraulic cylinder group through a second electric switch valve and a fourth electric switch valve; the first emulsion motor is connected with the first electric control speed regulating valve, the second emulsion motor is connected with the second electric control speed regulating valve, and is connected with a rod cavity of the hydraulic cylinder through a fifth electric switch valve and a seventh electric switch valve, the third emulsion motor and the fourth emulsion motor adopt the structure, the rod cavity is connected with the first electric control pressure regulating valve through the fifth electric switch valve and the seventh electric switch valve, and the rodless cavity is connected with the second electric control pressure regulating valve through the sixth electric switch valve and the eighth electric switch valve. The device realizes simultaneous testing of a plurality of emulsion pumps and emulsion motors, improves the work recovery efficiency and reduces the cost.

Inventors

LI JUNSHI
LIU WENCHAO
LI RAN
GUO ZIJIAN
YANG LI
WANG XIN

Assignees

北京天玛智控科技股份有限公司
北京煤科天玛自动化科技有限公司

Dates

Publication Date: 20260508
Application Date: 20230725

Claims (7)

1. A test system based on an emulsion pump and an emulsion motor is characterized by comprising a tested pump group, an emulsion motor group, an electric control speed regulation valve group, an electric switch valve group, a hydraulic cylinder group and an electric control pressure regulating valve group, wherein, The tested pump set comprises a high-pressure pump and a low-pressure pump, the emulsion motor set comprises a first emulsion motor, a second emulsion motor, a third emulsion motor and a fourth emulsion motor, the electric control speed regulating valve set comprises a first electric control speed regulating valve, a second electric control speed regulating valve, a third electric control speed regulating valve and a fourth electric control speed regulating valve, the electric switch valve set comprises a first electric switch valve, a second electric switch valve, a third electric switch valve, a fourth electric switch valve, a fifth electric switch valve, a sixth electric switch valve, a seventh electric switch valve and an eighth electric switch valve, the hydraulic cylinder set comprises a first hydraulic cylinder and a second hydraulic cylinder, and the electric control pressure regulating valve set comprises a first electric control pressure regulating valve and a second electric control pressure regulating valve; The high-pressure pump outlet enters a rod cavity of the hydraulic cylinder group through the first electric switch valve and the third electric switch valve, and the low-pressure pump outlet enters a rodless cavity of the hydraulic cylinder group through the second electric switch valve and the fourth electric switch valve; The first emulsion motor is connected with the first electric control speed regulating valve, the second emulsion motor is connected with the second electric control speed regulating valve, and is connected with the seventh electric switch valve and a rod cavity of the hydraulic cylinder group through the fifth electric switch valve together, the third emulsion motor is connected with the third electric control speed regulating valve, and the fourth emulsion motor is connected with the fourth electric control speed regulating valve, and is connected with the eighth electric switch valve and a rod-free cavity of the hydraulic cylinder group through the sixth electric switch valve together; The rod cavity of the hydraulic cylinder group is connected with the seventh electric switch valve and the first electric control pressure regulating valve through the fifth electric switch valve, and the rodless cavity of the hydraulic cylinder group is connected with the eighth electric switch valve and the second electric control pressure regulating valve through the sixth electric switch valve; The electric control speed regulation valve group is used for regulating the flow of each emulsion motor branch, and the electric control pressure regulation valve group is used for regulating the pressure value of the outlet of the emulsion motor group.
2. The emulsion pump and emulsion motor based test system of claim 1 wherein the system further comprises an adjustable load bank wherein, The adjustable load group comprises a first adjustable load, a second adjustable load, a third adjustable load and a fourth adjustable load; The first adjustable load is connected with the first emulsion motor, the second adjustable load is connected with the second emulsion motor, the third adjustable load is connected with the third emulsion motor, and the fourth adjustable load is connected with the fourth emulsion motor; Each adjustable load in the adjustable load group is used for adjusting the pressure of a corresponding emulsion motor in the emulsion motor group.
3. The emulsion pump and emulsion motor based test system of claim 1 wherein the system further comprises an accumulator train, wherein, The energy accumulator group comprises a first energy accumulator, a second energy accumulator, a third energy accumulator and a fourth energy accumulator; The first energy accumulator is respectively connected with the rod cavity of the first hydraulic cylinder and the first electric switch valve, the second energy accumulator is respectively connected with the rodless cavity of the first hydraulic cylinder and the second electric switch valve, the third energy accumulator is respectively connected with the rod cavity of the second hydraulic cylinder and the third electric switch valve, and the fourth energy accumulator is respectively connected with the rodless cavity of the second hydraulic cylinder and the fourth electric switch valve; The energy accumulator group is used for eliminating impact when the hydraulic cylinder group works.
4. A flow control method applied to the system of any one of claims 1-3, comprising: The first electric switch valve, the fourth electric switch valve, the sixth electric switch valve and the seventh electric switch valve are controlled by an upper computer to be opened, other electric switch valves are closed, wherein emulsion discharged by the high-pressure pump enters a rod cavity of the first hydraulic cylinder through the first electric switch valve to push a piston rod to act, emulsion discharged by a rodless cavity of the first hydraulic cylinder enters the third emulsion motor and the fourth emulsion motor through the sixth electric switch valve, emulsion discharged by the low-pressure pump enters the rodless cavity of the second hydraulic cylinder through the fourth electric switch valve to push the piston rod to act, and emulsion discharged by the rod cavity of the second hydraulic cylinder enters the first emulsion motor and the second emulsion motor through the seventh electric switch valve; When the first hydraulic cylinder or the second hydraulic cylinder moves to a limit position, the first electric switch valve, the fourth electric switch valve, the sixth electric switch valve and the seventh electric switch valve are controlled by an upper computer to be closed, and other electric switch valves are opened, wherein emulsion discharged by the high-pressure pump enters a rod cavity of the second hydraulic cylinder through the third electric switch valve to push a piston rod to act, emulsion discharged by a rodless cavity of the second hydraulic cylinder enters the third emulsion motor and the fourth emulsion motor through the eighth electric switch valve, emulsion discharged by the low-pressure pump enters the rodless cavity of the first hydraulic cylinder through the second electric switch valve to push the piston rod to act, and emulsion discharged by the rod cavity of the first hydraulic cylinder enters the first emulsion motor and the second emulsion motor through the fifth electric switch valve; and the steps are repeated circularly, so that the emulsion motors with continuous flow entering the two sides are realized.
5. The flow control method of claim 4, further comprising: And adjusting the inlet pressure of the second electric control pressure regulating valve to a preset low pressure value, and keeping the inlet pressure of the first electric control pressure regulating valve to be not higher than the nominal pressure value of the first emulsion motor and the second emulsion motor, so that the pressure values of the outlets of the third emulsion motor and the fourth emulsion motor are increased, and meanwhile, the stability of the system is maintained.
6. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the system of any of claims 1-3 when executing the computer program.
7. A non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the system according to any of claims 1-3.

Description

Emulsion pump and emulsion motor-based test system and flow control method Technical Field The application relates to the field of pump and motor testing, in particular to a testing system and a flow control method based on an emulsion pump and an emulsion motor. Background The traditional quantitative pump and quantitative motor comprehensive test hydraulic system connects the tested motor at the outlet of the tested pump, and meanwhile, the outlet is connected with a throttle valve, the flow driving motor of the pressure regulating valve drives the load to rotate, and the torque of the motor can be regulated by regulating the load, so that the inlet pressure of the tested motor is regulated. By adjusting the throttle opening, the flow rate of the emulsion motor can be adjusted. In a hydraulic system of an emulsion medium, because the viscosity of emulsion (95% water is mixed with 5% hydraulic oil) is far lower than that of the oil-based medium, and the corrosiveness of water is larger, a traditional oil-based motor cannot be used in the emulsion medium, and compared with an oil-based hydraulic pump, the emulsion motor product on the market at present has the characteristics that 1, the nominal flow of the emulsion motor is small (about 50-60L/min at maximum), and 2, the nominal pressure of the emulsion motor is lower (28 MPa at maximum). The emulsion pump product is mainly characterized in that the nominal pressure is high (up to 45 MPa), the nominal flow is high (up to 1250L/min), and the pump loading test under the high-pressure working condition (the nominal pressure of the emulsion motor is exceeded when the emulsion pump is regulated to the high pressure and the service life of the emulsion motor is reduced) can not be realized if the emulsion pump outlet is directly connected with the emulsion motor due to the pressure grade difference between the emulsion pump and the emulsion motor. And because the flow gap between the emulsion pump and the emulsion motor is large, if only one performance test of the emulsion pump and the emulsion motor is performed at the same time, relatively large resource waste can be generated. Disclosure of Invention Aiming at the problems, a testing system and a flow control method based on an emulsion pump and an emulsion motor are provided, a plurality of groups of emulsion motors are connected in parallel, the defect that the flow of the emulsion pump is far greater than that of the emulsion motor and the defect that the nominal pressure of the emulsion pump is greater than that of the emulsion motor are overcome by utilizing the pressurizing ratio of a hydraulic cylinder, and simultaneous testing of a plurality of emulsion pumps and emulsion motors is realized. The first aspect of the application provides a test system based on an emulsion pump and an emulsion motor, which comprises a tested pump group, an emulsion motor group, an electric control speed regulation valve group, an electric switch valve group, a hydraulic cylinder group and an electric control pressure regulation valve group, wherein, The tested pump set comprises a high-pressure pump and a low-pressure pump, the emulsion motor set comprises a first emulsion motor, a second emulsion motor, a third emulsion motor and a fourth emulsion motor, the electric control speed regulating valve set comprises a first electric control speed regulating valve, a second electric control speed regulating valve, a third electric control speed regulating valve and a fourth electric control speed regulating valve, the electric switch valve set comprises a first electric switch valve, a second electric switch valve, a third electric switch valve, a fourth electric switch valve, a fifth electric switch valve, a sixth electric switch valve, a seventh electric switch valve and an eighth electric switch valve, the hydraulic cylinder set comprises a first hydraulic cylinder and a second hydraulic cylinder, and the electric control pressure regulating valve set comprises a first electric control pressure regulating valve and a second electric control pressure regulating valve; The high-pressure pump outlet enters a rod cavity of the hydraulic cylinder group through the first electric switch valve and the third electric switch valve, and the low-pressure pump outlet enters a rodless cavity of the hydraulic cylinder group through the second electric switch valve and the fourth electric switch valve; The first emulsion motor is connected with the first electric control speed regulating valve, the second emulsion motor is connected with the second electric control speed regulating valve, and is connected with the seventh electric switch valve and a rod cavity of the hydraulic cylinder group through the fifth electric switch valve together, the third emulsion motor is connected with the third electric control speed regulating valve, and the fourth emulsion motor is connected with the fourth electric control speed regulating valve, and i