Power driving system of servo actuating system
By designing the power drive system of the servo actuation system, using a parallel plunger pump and a multi-stage filter, combined with an electromagnetic relief valve and a proportional relief valve, the problem of hydraulic pump stations being unable to meet the large flow detection, achieving stable output of high pressure and large flow, and meeting the needs of the operation cylinder test of aircraft aircraft.
Patent Information
- Application Number
- CN202423130113.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-12-18
AI Technical Summary
The existing hydraulic pump stations cannot meet the needs of large flow detection and cannot achieve unlimited adjustment of pressure and flow, resulting in low accuracy of detection results and unable to provide a good test environment.
A servo actuation system power drive system is designed, using two sets of parallel plunger pumps and multi-stage filters, combining solenoid relief valves and proportional relief valves to achieve stable output of high pressure and large flow, and is cooled through a water-cooled heat exchanger to provide triple protection.
It achieves a flow rate of 600L/min and a maximum pressure of 35MPa, providing a stable high-pressure and high-flow hydraulic source, meeting the needs of aircraft operating cylinder tests, and improving the detection accuracy and stability of the test environment.
Smart Images
Figure CN223293972U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aircraft actuator test, in particular to a servo actuator system power drive system. Background Art
[0002] Up to now, most hydraulic pump stations used in China have a maximum pressure of 28MPa and a maximum flow of 400L / min. They are currently the largest pump stations in the country in the field of hydraulic pump stations. However, the existing pump stations cannot meet the requirements of large-flow detection work. In addition, a higher output pressure is required for testing the actuator of the iron bird platform. The pressure and flow cannot be infinitely adjusted, and the adjustment accuracy is low, which greatly affects the test results and cannot provide a good test environment for aircraft actuator tests. Utility Model Content
[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a servo actuator system power drive system with a simple structure. In order to better meet the needs of testing the actuator of an aircraft, a good and stable high-pressure, large-flow hydraulic source is provided for the test. The invention of this drive system solves the problem of incomplete testing environment of the actuator and can effectively solve the problems in the background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a servo actuation system power drive system, comprising an oil tank, two sets of oil supply drive systems are connected in parallel on the oil tank, and an oil supply assembly is also connected to the oil tank; each oil supply drive system comprises two plunger pumps, the inlets of the plunger pumps are connected to the inlet of the oil tank, an oil suction filter is provided at the interface between the oil tank and the plunger pump, and three outlets are provided on the plunger pump, the first outlet of the plunger pump is connected to the inlet of the oil drain filter through a one-way valve 1, and the inlet of the oil drain filter is connected to the inlet of the oil tank through a conduit, a one-way valve 2 is provided at the second outlet of the two plunger pumps, the outlets of the two one-way valves 2 are connected in series with a primary filter and a secondary filter through a conduit, and the outlets of the two secondary filters are connected to a three-way joint, The outlet of the through joint is connected to the inlet of the flow meter through a conduit. The conduit connecting the tee joint to the flow meter is connected in series with an accumulator, a stainless steel seismic-resistant pressure gauge, a pressure sensor and a pressure relay in sequence, and a pressure regulating part is arranged between the conduit connecting the tee joint to the flow meter and the return oil pipe. The third outlets of the two plunger pumps are connected to the pressure regulating part through a one-way valve three. The outlet of the flow meter is respectively connected to the inlet of the new iron bird stand and the old iron bird stand through a Y-shaped conduit. The outlets of the new iron bird stand and the old iron bird stand are connected to the inlet of the return oil pipe. The outlet of the return oil pipe is connected to the inlet of the oil tank. A return oil filter is connected in series at the connection between the return oil pipe and the oil tank. A water-cooled heat exchanger is connected in series on the return oil pipe. A pressure sensor 2 and a temperature sensor are respectively arranged at the inlet and outlet of the water-cooled heat exchanger.
[0005] Furthermore, a liquid level gauge is provided on one side of the fuel tank, a liquid level sensor is provided inside the fuel tank, and an opening is provided at the upper end of the fuel tank, to which an air filter is connected.
[0006] Furthermore, the oil supply assembly includes a refueling pump, a one-way valve four and a refueling filter. The inlet of the refueling pump is connected to the external oil source conduit, the outlet of the refueling pump is connected to the inlet of the refueling filter through the one-way valve four, and the outlet of the refueling filter is connected to the inside of the fuel tank through the conduit.
[0007] Furthermore, the inlet and outlet of the new iron bird platform and the old iron bird platform are respectively connected in series with a switch and a valve.
[0008] Furthermore, the pressure regulating component includes an electromagnetic overflow valve and a proportional overflow valve, the electromagnetic overflow valve and the proportional overflow valve are connected in parallel, and the third outlet of the one-way valve connected to the plunger pump is connected to the inlet of the proportional overflow valve.
[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: the oil in the oil tank can be extracted by two parallel plunger pumps, thereby providing a flow rate of 600L / min for workpiece detection, and the maximum pressure can reach 35MP. During extraction, the extracted oil is filtered by the oil suction filter, and the extracted oil is filtered twice by the primary filter and the secondary filter, and the filtered oil passes through the detection and enters the new iron bird table and the old iron bird table, and the workpiece is detected by the new iron bird table and the old iron bird table. The detected oil flows back to the inside of the oil tank through the return oil pipe, and the electromagnetic overflow valve itself is a mechanical safety valve with power-on opening. When the pressure exceeds a certain value, the electromagnetic overflow valve itself will mechanically open to complete the pressure relief as a layer of protection; at the same time The electromagnetic overflow valve can also be powered on and opened by the pressure detected by the pressure relay to complete the pressure relief, forming a double protection; finally, when the emergency stop button is pressed, the electromagnetic overflow valve will also open and unload, forming a triple protection. When the pressure of the plunger pump is too high, the proportional overflow valve is used to regulate the system pressure, which can make the system freely adjust from the starting pressure to 35MPa. The oil flowing through the return oil pipe is cooled by the water-cooled heat exchanger, and then filtered by the return oil filter and returned to the inside of the oil tank. The automatic cutting device for the negative electrode of the nickel-hydrogen battery has a simple structure. In order to better meet the testing of the actuator of the aircraft, it provides a good and stable high-pressure, large-flow hydraulic source for the test. The invention of this drive system solves the problem of incomplete testing environment of the actuator. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of the structure of the utility model;
[0011] Figure 2 This is a structural diagram of the oil supply drive system of the utility model.
[0012] In the figure: 1 fuel tank, 2 plunger pump, 3 one-way valve 1, 4 drain filter, 5 one-way valve 2, 6 primary filter, 7 secondary filter, 8 flow meter, 9 accumulator, 10 stainless steel shock-resistant pressure gauge, 11 pressure sensor, 12 pressure relay, 13 oil return pipe, 14 pressure regulating element, 141 electromagnetic relief valve, 142 proportional relief valve, 15 one-way valve 3, 16 new iron bird stand, 17 old iron bird stand, 18 water-cooled heat exchanger, 19 pressure sensor 2, 20 temperature sensor, 21 liquid level gauge, 22 liquid level sensor, 23 air filter, 24 refueling pump, 25 one-way valve 4, 26 refueling filter, 27 oil suction filter, 28 oil return filter, 29 switch, 30 valve. DETAILED DESCRIPTION
[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0014] See also Figure 1-2, the utility model provides a technical solution: a servo actuation system power drive system, comprising an oil tank 1, two sets of oil supply drive systems are connected in parallel on the oil tank 1, and an oil supply component is also connected to the oil tank 1;Each oil supply drive system includes two plunger pumps 2, the inlet of the plunger pump 2 is connected to the inlet of the oil tank 1, an oil suction filter 27 is provided at the interface between the oil tank 1 and the plunger pump 2, and three outlets are provided on the plunger pump 2. The first outlet of the plunger pump 2 is connected to the inlet of the oil drain filter 4 through a one-way valve 1 3, and the inlet of the oil drain filter 4 is connected to the inlet of the oil tank 1 through a conduit. The second outlets of the two plunger pumps 2 are each provided with a one-way valve 2 5, and the outlets of the two one-way valves 2 5 are connected in series with a primary filter 6 and a secondary filter 7 through a conduit, and the outlets of the two secondary filters 7 are connected to a tee joint, and the outlet of the tee joint is connected to the inlet of a flow meter 8 through a conduit. The conduit connecting the tee joint and the flow meter 8 is connected in series with an accumulator 9 and a stainless steel seismic-resistant pressure gauge 1 in sequence. 0, pressure sensor 11 and pressure relay 12, and a pressure regulating part 14 is set between the conduit connected to the flow meter 8 by the three-way joint and the return oil pipe 13, the third outlet of the two plunger pumps 2 is connected to the pressure regulating part 14 through the one-way valve three 15, the outlet of the flow meter 8 is connected to the inlet of the new iron bird stand 16 and the old iron bird stand 17 respectively through the Y-shaped conduit, the outlet of the new iron bird stand 16 and the old iron bird stand 17 is connected to the inlet of the return oil pipe 13, the outlet of the return oil pipe 13 is connected to the inlet of the fuel tank 1, and the return oil filter 28 is connected in series at the connection between the return oil pipe 13 and the fuel tank 1, and a water-cooled heat exchanger 18 is connected in series on the return oil pipe 13. The inlet and outlet of the water-cooled heat exchanger 18 are respectively provided with a pressure sensor 2 19 and a temperature sensor 20. One side of the fuel tank 1 is provided with A liquid level gauge 21 and a liquid level sensor 22 are provided inside the fuel tank 1. An opening is provided at the upper end of the fuel tank 1, to which an air filter 23 is connected. The oil supply assembly includes a refueling pump 24, a one-way valve four 25 and a refueling filter 26. The inlet of the refueling pump 24 is connected to the external oil source conduit, and the outlet of the refueling pump 24 is connected to the inlet of the refueling filter 26 through a one-way valve four 25. The outlet of the refueling filter 26 is connected to the interior of the fuel tank 1 through a conduit. A switch 29 and a valve 30 are respectively connected in series at the inlet and outlet of the new iron bird stand 16 and the old iron bird stand 17. The pressure regulating member 14 includes an electromagnetic overflow valve 141 and a proportional overflow valve 142. The electromagnetic overflow valve 141 and the proportional overflow valve 142 are connected in parallel. The outlet of the one-way valve three 15 connected to the plunger pump 2 is connected to the proportional overflow valve. The inlet connection of the flow valve 142 can extract the oil in the oil tank 1 through two parallel plunger pumps 2, thereby providing a flow rate of 600L / min for workpiece detection, and the maximum pressure can reach 35MP. During extraction, the extracted oil is filtered by the oil suction filter 27, and the extracted oil is filtered twice by the primary filter 6 and the secondary filter 7. The filtered oil passes through the detection and enters the new iron bird table 16 and the old iron bird table 17. The workpiece is detected by the new iron bird table 16 and the old iron bird table 17. The detected oil returns to the inside of the oil tank 1 through the return oil pipe 13. The electromagnetic overflow valve 141 itself is a mechanical safety valve with power-on opening. When the pressure exceeds a certain value, the electromagnetic overflow valve 141 itself will mechanically open to complete the pressure relief as a layer of protection;At the same time, the electromagnetic relief valve 141 can also be powered on and open to relieve pressure based on the pressure detected by the pressure relay 12, providing a double protection. Finally, when the emergency stop button is pressed, the electromagnetic relief valve 141 also opens to relieve the pressure, providing a triple protection. When the pressure of the plunger pump 2 is excessive, the proportional relief valve 142 is used to regulate the system pressure, allowing the system to freely adjust from the starting pressure to 35MPa. The oil flowing through the return oil pipe 13 is cooled by the water-cooled heat exchanger 18 and then filtered by the return oil filter 28 before returning to the interior of the fuel tank 1. This automatic nickel-metal hydride battery negative electrode sheet cutting device has a simple structure and is designed to better meet the needs of aircraft actuator testing, providing a stable high-pressure, high-flow hydraulic source for testing. This drive system solves the problem of an incomplete actuator testing environment.
[0015] When in use: the oil in the oil tank 1 can be extracted by two parallel plunger pumps 2, so as to provide a flow of 600L / min for workpiece detection, and the maximum pressure can reach 35MP. When extracting, the extracted oil is filtered by the oil suction filter 27, and the extracted oil is filtered twice by the primary filter 6 and the secondary filter 7. The filtered oil passes through the detection and enters the new iron bird table 16 and the old iron bird table 17. The workpiece is detected by the new iron bird table 16 and the old iron bird table 17. The detected oil returns to the inside of the oil tank 1 through the return oil pipe 13. The electromagnetic overflow valve 141 itself is a mechanical safety valve with power-on opening. When the pressure exceeds When the pressure reaches a certain value, the electromagnetic overflow valve 141 itself will mechanically open to complete the pressure relief as a single layer of protection; at the same time, the electromagnetic overflow valve 141 can also be powered on and opened by the pressure detected by the pressure relay 12 to complete the pressure relief, forming a double layer of protection; finally, when the emergency stop button is pressed, the electromagnetic overflow valve 141 will also open and unload, forming a triple layer of protection. When the pressure of the plunger pump 2 is too high, the proportional overflow valve 142 is used to regulate the system pressure, which can enable the system to be freely adjusted from the starting pressure to 35 MPa. The oil flowing through the return oil pipe 13 is cooled by the water-cooled heat exchanger 18, and then filtered by the return oil filter 28 and returned to the inside of the oil tank 1.
[0016] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention.
Claims
1. A servo actuator power drive system, comprising an oil tank (1), characterized in that: Two sets of oil supply drive systems are connected in parallel on the oil tank (1), and the oil tank (1) is also connected to an oil supply assembly; each oil supply drive system includes two plunger pumps (2), the inlets of the plunger pumps (2) are connected to the inlet of the oil tank (1), an oil suction filter (27) is provided at the interface between the oil tank (1) and the plunger pump (2), and three outlets are provided on the plunger pump (2), the first outlet of the plunger pump (2) is connected to the inlet of the oil leakage filter (4) through a one-way valve (3), the inlet of the oil leakage filter (4) is connected to the inlet of the oil tank (1) through a conduit, and the second outlets of the two plunger pumps (2) are both provided with a one-way valve (5), the outlets of the two one-way valves (5) are both connected in series with a primary filter (6) and a secondary filter (7) through a conduit, and the outlets of the two secondary filters (7) are connected to a three-way joint, the outlet of the three-way joint is connected to the inlet of a flow meter (8) through a conduit, and the conduit connected to the flow meter (8) is connected in sequence. An accumulator (9), a stainless steel shockproof pressure gauge (10), a pressure sensor (11) and a pressure relay (12) are connected in series, and a pressure regulating member (14) is provided between the conduit connected to the flow meter (8) and the return oil pipe (13). The third outlets of the two plunger pumps (2) are connected to the pressure regulating member (14) through a one-way valve (15). The outlet of the flow meter (8) is connected to the new iron bird stand (16) and the old iron bird stand (17) respectively through a Y-shaped conduit. The inlet of the new iron bird stand (16) and the old iron bird stand (17) are connected to the inlet of the return oil pipe (13), the outlet of the return oil pipe (13) is connected to the inlet of the oil tank (1), and a return oil filter (28) is connected in series at the connection between the return oil pipe (13) and the oil tank (1). A water-cooled heat exchanger (18) is connected in series to the return oil pipe (13), and a pressure sensor (19) and a temperature sensor (20) are respectively provided at the inlet and outlet of the water-cooled heat exchanger (18).
2. The servo actuator power drive system according to claim 1, characterized in that: A liquid level gauge (21) is provided on one side of the oil tank (1), a liquid level sensor (22) is provided inside the oil tank (1), and an opening is provided at the upper end of the oil tank (1), to which an air filter (23) is connected.
3. The servo actuator power drive system according to claim 1, characterized in that: The oil supply assembly comprises a refueling pump (24), a one-way valve (25) and a refueling filter (26); the inlet of the refueling pump (24) is connected to an external oil source conduit; the outlet of the refueling pump (24) is connected to the inlet of the refueling filter (26) through the one-way valve (25); and the outlet of the refueling filter (26) is communicated with the interior of the fuel tank (1) through the conduit.
4. The servo actuator power drive system according to claim 1, characterized in that: The inlet and outlet of the new iron bird platform (16) and the old iron bird platform (17) are respectively connected in series with a switch (29) and a valve (30).
5. The servo actuator power drive system according to claim 1, characterized in that: The pressure regulating member (14) includes an electromagnetic overflow valve (141) and a proportional overflow valve (142), the electromagnetic overflow valve (141) and the proportional overflow valve (142) are connected in parallel, and the outlet of the one-way valve three (15) connected to the plunger pump (2) is connected to the inlet of the proportional overflow valve (142).