CN110207977B - Testing method for energy storage transmission system of disc spring hydraulic mechanism - Google Patents
Testing method for energy storage transmission system of disc spring hydraulic mechanism Download PDFInfo
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- CN110207977B CN110207977B CN201910304910.1A CN201910304910A CN110207977B CN 110207977 B CN110207977 B CN 110207977B CN 201910304910 A CN201910304910 A CN 201910304910A CN 110207977 B CN110207977 B CN 110207977B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 89
- 230000005540 biological transmission Effects 0.000 title claims abstract description 83
- 230000007246 mechanism Effects 0.000 title claims abstract description 56
- 238000012360 testing method Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000003825 pressing Methods 0.000 claims description 30
- 230000008859 change Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 8
- 238000010998 test method Methods 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/855—Testing of fluid pressure systems
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- Engineering & Computer Science (AREA)
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a test method for an energy storage transmission system of a disc spring hydraulic mechanism, which is characterized in that a load formed by an oil pump, the disc spring hydraulic mechanism and a breaker is simulated by utilizing a motor, so that the load formed by the actual oil pump, the disc spring hydraulic mechanism, the breaker and the like is replaced in the test process, the preparation period in the early stage of the test is reduced, the condition that the disc spring hydraulic mechanism and the breaker are scrapped after the test is finished is avoided, and the problems of long test period and high test cost caused by the fact that the whole disc spring hydraulic mechanism and the breaker need to be assembled in the improvement test of the conventional energy storage transmission system are solved. In addition, because the actual loads such as an oil pump, a circuit breaker and the like are not arranged in the test, the space is saved, and the floor area of the test equipment is reduced.
Description
Technical Field
The invention relates to the technical field of disc spring hydraulic mechanism test devices, in particular to a test method for an energy storage transmission system of a disc spring hydraulic mechanism.
Background
The disc spring hydraulic mechanism has the characteristics of compact structure, modularization and high serialization degree, and can act on the circuit breaker to execute the opening and closing control of the circuit breaker. The disc spring hydraulic mechanism comprises an energy storage transmission system, the energy storage transmission system is input by a motor of the energy storage transmission system, and is subjected to speed reduction transmission through a pair of bevel gears to drive an eccentric shaft to rotate, so that an oil pump is driven to perform pressurizing operation, and the system pressure is increased to the required pressure through the pressurizing operation of the oil pump. After energy storage transmission system improves, need test, test to it, original test need assemble whole platform dish spring hydraulic pressure mechanism to the configuration circuit breaker carries out 1 ten thousand mechanical life tests, and traditional energy storage transmission system's test method specifically is: the energy storage transmission system is matched with a disc spring hydraulic mechanism and a breaker, then the operation of 'brake opening operation-90 s stop-switch-on operation-90 s stop-switch opening operation' is carried out, and the operation is circulated for 7500 times; the operation of reclosing-stop for 180 s-closing operation-stop for 180 s-reclosing operation is circulated for 1250 times. After the mechanism is switched on and off, the system pressure value is reduced, the energy storage transmission system is started to carry out pressurization, and the energy storage transmission system stops when the rated pressure, the high oil pressure or the low oil pressure is reached. After the test is finished, the disc spring hydraulic mechanism and the breaker are scrapped, so that the test cost is high, and the occupied area is large; the disc spring hydraulic mechanism and the breaker have long preparation periods, resulting in long test periods.
Disclosure of Invention
The invention aims to provide a method for testing an energy storage transmission system of a disc spring hydraulic mechanism, which is used for solving the problems of long test period and high test cost caused by the fact that the whole disc spring hydraulic mechanism and a breaker need to be assembled in the improvement test of the conventional energy storage transmission system.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the invention provides a method for testing an energy storage transmission system of a disc spring hydraulic mechanism, which comprises the following steps:
1) the output end of the energy storage transmission system to be tested is connected with a motor, and the motor is used for simulating a load formed by an oil pump, a disc spring hydraulic mechanism and a circuit breaker;
2) the method comprises the steps of enabling an energy storage transmission system to be tested to be pressed after switching-off, switching-on and reclosing operations, obtaining a required output torque curve according to required system pressure change, and controlling a motor to generate corresponding load torque according to the output torque curve.
The invention has the beneficial effects that:
through utilizing the load that the electric simulation oil pump, dish spring hydraulic pressure mechanism and circuit breaker formed, replaced the load that adopts actual oil pump, dish spring hydraulic pressure mechanism, circuit breaker etc. to constitute in the test procedure, reduced the preparation cycle of test earlier stage to avoided scrapping the condition of handling dish spring hydraulic pressure mechanism and circuit breaker after the test is accomplished, thereby solved current energy storage transmission system and improved the test and need assemble whole dish spring hydraulic pressure mechanism and circuit breaker and lead to the longer and higher problem of test cost of test cycle. In addition, because the actual loads such as an oil pump, a disc spring hydraulic mechanism, a circuit breaker and the like are not arranged in the test, the space is saved, and the floor area of the test equipment is reduced.
Further, the energy storage transmission system to be tested executes at least one first cycle operation, and the first cycle operation comprises: pressing after opening and pressing after closing; and controlling the torque of the motor to rise from a first initial torque to a first termination torque within the striking time after the brake is opened, and controlling the torque of the motor to rise from a second initial torque to the first termination torque within the striking time after the brake is closed.
Further, the energy storage transmission system to be tested executes at least one second cycle operation, and the second cycle operation comprises: pressing after reclosing and pressing after reclosing; and controlling the torque of the motor to rise from the third initial torque to the second termination torque within the striking time after reclosing, and controlling the torque of the motor to rise from the fourth initial torque to the second termination torque within the striking time after reclosing.
And further, the motor is connected with the energy storage transmission system to be tested through a coupler.
Furthermore, one end of the coupler is connected with a rotating shaft of the motor, and the other end of the coupler is used for being connected with an eccentric shaft of the energy storage transmission system to be tested.
Further, the motor is a servo motor.
Drawings
FIG. 1 is a schematic diagram of an energy storage drive system and test simulation apparatus of the present invention;
reference numerals: 1-an electrical control cabinet, 2-a servo motor, 3-a coupler, 4-an energy storage transmission system and 5-a chassis.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
The embodiment of the device is as follows:
the invention provides a testing device for an energy storage transmission system of a disc spring hydraulic mechanism, which comprises an electric control cabinet 1 and a servo motor 2, wherein the servo motor 2 is connected with an energy storage transmission system 4 to be tested through a coupler 3, one end of the coupler 3 is connected with a rotating shaft of the servo motor 2, and the other end of the coupler 3 is used for connecting an eccentric shaft of the energy storage transmission system 4 to be tested.
The electric control cabinet 1, the servo motor 2 and the energy storage transmission system 4 are all fixed on the bottom frame 5. Wherein electrical control cabinet 1 includes PLC, touch-sensitive screen and power module. The PLC is used for controlling the operation mode of the servo motor 2, namely controlling the energy storage transmission system 4; the touch screen is used for selecting a control mode, controlling the start and stop of the experiment and adjusting parameters. Still be provided with the fuse in the electrical control cabinet 1, when energy storage transmission system 4 can not satisfy the experiment requirement, for example when the motor burns out, the automatic power cut-off stops the experiment, is favorable to preventing the occurence of failure.
The servo motor 2 is used for simulating a load formed by an oil pump, a disc spring hydraulic mechanism and a breaker, so that when the energy storage transmission system 4 to be tested is pressed after switching-off, switching-on and reclosing operations are carried out, a corresponding output torque curve is obtained according to the required system pressure, and the servo motor 2 is controlled to generate a corresponding load torque according to the output torque curve. Wherein the torque control process of the servomotor 2 is described in detail in the following method embodiment.
The first embodiment of the method comprises the following steps:
the invention provides a testing method for an energy storage transmission system of a disc spring hydraulic mechanism, which is characterized in that a load formed by an oil pump, the disc spring hydraulic mechanism and a breaker is simulated by a motor, so that when the energy storage transmission system to be tested is subjected to opening, closing and reclosing operations and then is pressurized, the motor is controlled to generate corresponding torque according to the required system pressure.
When the test method is implemented specifically, firstly, an experimental simulation device is designed; the device for realizing the method is a testing device for the energy storage transmission system of the disc spring hydraulic mechanism in the device embodiment.
And calculating or detecting the system pressure change value and the energy storage transmission system pressurizing time after the opening, closing and reclosing operations of the disc spring hydraulic mechanism according to the mechanism model. In the test process, the energy storage transmission system 4 to be tested is tested at least once, namely, the opening and closing test (the first cycle operation).
The opening and closing test executed by the energy storage transmission system 4 to be tested comprises the following steps: pressing and stopping after switching off, and pressing and stopping after switching on; and in the pressing time after the switching-off, the PLC controls the load torque of the servo motor 2 to rise from the first initial torque to the first termination torque, and in the pressing time after the switching-on, the PLC controls the load torque of the servo motor 2 to rise from the second initial torque to the first termination torque.
Specifically, after the disc spring hydraulic mechanism is subjected to the opening operation, the energy storage transmission system operates to drive the oil pump, so that the pressure of the disc spring hydraulic mechanism is increased from a first set pressure value to a first termination pressure value within the pressing time, the corresponding servo motor 2 simulating the load of the energy storage transmission system outputs a load torque which is increased from a first set torque value (a first initial torque) to a first termination torque value, each pressure value corresponds to a torque value in the increasing process, and if the first set pressure value corresponds to the first set torque value. And after the pressing is finished, the energy storage transmission system and the servo motor stop operating.
After the disc spring hydraulic mechanism is switched on, the energy storage transmission system operates to drive the oil pump, so that the pressure of the disc spring hydraulic mechanism is increased to a first termination pressure value from a second set pressure value within the pressing time, the servo motor 2 correspondingly simulating the load of the energy storage transmission system outputs a load torque which is increased to a first termination torque value from a second set torque value (a second initial torque), each pressure value corresponds to a torque value in the increasing process, and if the second set pressure value corresponds to the second set torque value. And after the pressing is finished, the energy storage transmission system and the servo motor stop operating.
When the brake opening operation, the brake closing operation and the brake opening operation are stopped for 90s and 90s, the energy storage transmission system 4 drives the oil pump to pressurize, and the operation can be simulated to drive the servo motor 2 to move by the energy storage transmission system 4, and the servo motor 2 provides movement resistance according to the parameters in the table 1.
As shown in table 1, the operating parameters for a certain type of disc spring hydraulic mechanism are:
TABLE 1
After the brake opening operation is completed, the energy storage transmission system 4 is pressurized, and the pressure of the hydraulic system is increased from 50.21MPa to 53.1MPa by overcoming the load moment of the servo motor 2, which is increased from 12.76N.M to 13.5N.M, within 20 s. The interval time between the opening operation and the closing operation is 90s, the energy storage time is 20s, 70s are remained, and the energy storage transmission system 4 stops moving.
After the closing operation is finished, the energy storage transmission system 4 is pressurized, and the load moment of the servo motor 2, which is increased from 13.31N.M to 13.5N.M, is overcome within 10s, so that the pressure of the hydraulic system is increased from 52.37MPa to 53.1 MPa. The interval time between the opening operation and the closing operation is 90s, the energy storage time is 10s, 80s are remained, and the energy storage transmission system 4 stops moving.
The first termination torque, the first initial torque and the second initial torque correspond to 13.5N.M, 12.76N.M and 13.31N.M respectively. The first set time is 20s, the second set time is 70s, the third set time is 10s, and the fourth set time is 80 s.
And the pressing time and stopping time of the energy storage transmission system after opening and closing are specifically determined according to the model of the energy storage transmission system to be tested, namely the relevant parameters.
The second method embodiment:
when the test method is implemented specifically, firstly, an experimental simulation device is designed; the device for realizing the method is a testing device for the energy storage transmission system of the disc spring hydraulic mechanism in the device embodiment.
And calculating or detecting the system pressure change value and the energy storage transmission system pressurizing time after the opening, closing and reclosing operations of the disc spring hydraulic mechanism according to the mechanism model. In the test process, the energy storage transmission system 4 is tested at least once, i.e., a reclosing test (second cycle operation).
The reclosing executed by the energy storage transmission system 4 to be tested comprises the following steps: pressing and stopping after reclosing, and pressing and stopping after reclosing; and in the pressing time after reclosing, the PLC controls the torque of the servo motor 2 to rise from the third initial torque to the second termination torque, and in the pressing time after reclosing, the PLC controls the torque of the servo motor 2 to rise from the fourth initial torque to the second termination torque.
Specifically, after the disc spring hydraulic mechanism performs reclosing operation, the energy storage transmission system operates to drive the oil pump, so that the pressure of the disc spring hydraulic mechanism is increased from a third set pressure value to a second termination pressure value within the pressing time, the corresponding servo motor 2 simulating the load of the energy storage transmission system outputs a load torque which is increased from a third set torque value (a third initial torque) to the second termination torque value, each pressure value corresponds to a torque value in the increasing process, and if the third set pressure value corresponds to the third set torque value. And after the pressing is finished, the energy storage transmission system and the servo motor stop operating.
After the disc spring hydraulic mechanism is switched on, the energy storage transmission system operates to drive the oil pump, so that the pressure of the disc spring hydraulic mechanism is increased to a second termination pressure value from a fourth set pressure value within the pressing time, the corresponding servo motor 2 simulating the load of the energy storage transmission system outputs a load torque which is increased to the second termination torque value from the fourth set torque value (fourth initial torque), each pressure value corresponds to a torque value in the increasing process, and if the fourth set pressure value corresponds to the fourth set torque value. And after the pressing is finished, the energy storage transmission system and the servo motor stop operating.
When the reclosing operation, the stop of 180s, the closing operation, the stop of 180s and the reclosing operation are operated, the energy storage transmission system 4 is pressed, the energy storage transmission system 4 can be simulated to drive the servo motor 2 to move, and the servo motor 2 provides movement resistance according to the parameters in the table 2.
As shown in table 2, the operating parameters for a certain type of disc spring hydraulic mechanism are:
TABLE 2
After the reclosing operation is completed, the energy storage transmission system 4 is pressurized, and the load moment of the servo motor 2, which is increased from 10.43N.M to 13.5N.M, is overcome within 55s, so that the pressure of the hydraulic system is increased from 41.05MPa to 53.1 MPa. The time interval between the reclosing operation and the closing operation is 180s, the energy storage time is 55s, 125s is remained, and the energy storage transmission system 4 stops moving.
After the closing operation is finished, the energy storage transmission system 4 is pressurized, and the load moment of the servo motor 2, which is increased from 13.31N.M to 13.5N.M, is overcome within 10s, so that the pressure of the hydraulic system is increased from 52.37MPa to 53.1 MPa. The interval time between the closing operation and the reclosing operation is 180s, the energy storage time is 10s, 170s are remained, and the energy storage transmission system 4 stops moving.
The second ending torque, the third initial torque and the fourth initial torque respectively correspond to 13.5N.M, 10.43N.M and 13.31 N.M. The fifth set time is 55s, the sixth set time is 125s, the seventh set time is 10s, and the eighth set time is 170 s.
The reclosing time and the pressing time after the reclosing and the stopping time of the energy storage transmission system are specifically determined according to the model of the energy storage transmission system to be tested, namely the relevant parameters.
The method provided by the invention can reduce the test cost, shorten the test period and improve the test safety; the condition that the disc spring hydraulic mechanism and the circuit breaker are scrapped after the test is completed is avoided, and therefore the problems that the whole disc spring hydraulic mechanism and the circuit breaker are required to be assembled to improve the test of the existing energy storage transmission system, the test period is long and the test cost is high are solved. In addition, because the actual loads such as an oil pump, a circuit breaker and the like are not arranged in the test, the space is saved, and the floor area of the test equipment is reduced.
Claims (4)
1. A testing method for an energy storage transmission system of a disc spring hydraulic mechanism is characterized by comprising the following steps:
1) the output end of the energy storage transmission system to be tested is connected with a motor, and the motor is used for simulating a load formed by an oil pump, a disc spring hydraulic mechanism and a circuit breaker;
2) the method comprises the steps that an energy storage transmission system to be tested is pressed after switching-off, switching-on and reclosing operations, a required output torque curve is obtained according to required system pressure change, and a motor is controlled to generate corresponding load torque according to the output torque curve;
at least one first cycle of operation performed by the energy storage drive system under test, the first cycle of operation comprising: pressing after opening and pressing after closing; in the pressure time after the brake is opened, the energy storage transmission system operates to drive the oil pump, so that the pressure of the disc spring hydraulic mechanism is increased from a first set pressure value to a first termination pressure value in the pressure time, the torque of the motor is correspondingly controlled to be increased from a first initial torque to a first termination torque, in the pressure time after the brake is closed, the energy storage transmission system operates to drive the oil pump, so that the pressure of the disc spring hydraulic mechanism is increased from a second set pressure value to the first termination pressure value in the pressure time, and the torque of the motor is correspondingly controlled to be increased from the second initial torque to the first termination torque;
at least one second cycle of operation performed by the energy storage drive system under test, the second cycle of operation comprising: pressing after reclosing and pressing after reclosing; and in the pressing time after reclosing, the energy storage transmission system operates to drive the oil pump, so that the pressure of the disc spring hydraulic mechanism is increased from a third set pressure value to a second termination pressure value in the pressing time, the torque of the motor is correspondingly controlled to be increased from a third initial torque value to a second termination torque value, and in the pressing time after reclosing, the energy storage transmission system operates to drive the oil pump, so that the pressure of the disc spring hydraulic mechanism is increased from a fourth set pressure value to the second termination pressure value in the pressing time, and the torque of the motor is correspondingly controlled to be increased from the fourth initial torque value to the second termination torque value.
2. The method for testing the energy storage transmission system of the disc spring hydraulic mechanism according to claim 1, wherein the motor is connected with the energy storage transmission system to be tested through a coupler.
3. The method for testing the energy storage transmission system of the disc spring hydraulic mechanism according to claim 2, wherein one end of the coupler is connected with a rotating shaft of a motor, and the other end of the coupler is used for connecting an eccentric shaft of the energy storage transmission system to be tested.
4. The method for testing the energy storage transmission system of the disc spring hydraulic mechanism according to claim 2, wherein the motor is a servo motor.
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| CN110836749B (en) * | 2019-11-28 | 2021-01-15 | 西安交通大学 | Remote monitoring system for leakage state of hydraulic operating mechanism |
| CN112431821B (en) * | 2020-11-11 | 2021-10-01 | 中国南方电网有限责任公司超高压输电公司昆明局 | Early warning device for hydraulic disc spring mechanism of high-voltage circuit breaker |
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