CN114278626A - Airborne emergency hydraulic system and method for electric pressurization energy storage flow compensation - Google Patents
Airborne emergency hydraulic system and method for electric pressurization energy storage flow compensation Download PDFInfo
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- 239000000203 mixture Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 87
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Abstract
The application belongs to the field of airplane hydraulic systems, and provides an onboard emergency hydraulic system and method for electric pressurization energy storage flow compensation, wherein the system comprises an energy accumulator, a motor and a high-pressure pump, an oil supply end of the onboard hydraulic system is communicated with the energy accumulator through an oil supply one-way valve, an oil return end of the onboard hydraulic system is connected with the energy accumulator through the high-pressure pump and the one-way valve, and the motor is connected with and controls the high-pressure pump; the accumulator is connected with an onboard hydraulic user through an electromagnetic valve. The invention can provide instantaneous high pressure and large flow for an onboard hydraulic user, reduce the installed power of an airplane hydraulic system, has higher efficiency than a motor supercharging energy storage scheme, has smaller size specification of the required power of a motor and a high-pressure pump, and is beneficial to reducing the weight of the hydraulic system; the system of the invention has simple composition, can still work when the main hydraulic system or the motor has faults, can be used as emergency hydraulic energy, and has higher reliability.
Description
Technical Field
The application belongs to the field of aircraft hydraulic systems, relates to an emergency hydraulic system, and particularly relates to an airborne emergency hydraulic system and method for electric supercharging energy storage flow compensation.
Background
The installed power of the hydraulic system of the airplane needs to comprehensively consider comprehensive factors such as functions, weight and efficiency, although hydraulic users such as an undercarriage, a front wheel turning part, a brake and a weapon cabin door do not work in a cruising stage which occupies most of the time of flight, in order to realize the operational function in the full envelope range of the airplane, the hydraulic system must be ensured to provide instantaneous flow meeting the flow requirements of all the hydraulic users, if the installed power of the hydraulic system is designed according to the maximum flow profile of the full envelope of the airplane, the requirements can be met, the engine load and the system heating power under the conventional working condition are inevitably increased, and the through-flow capacity of a pipeline is improved due to the increase of the system flow, so that the weight of the system is increased. Therefore, the flow provided by the distributed hydraulic system with the flow compensation capacity for the hydraulic users under the short-term high-power working condition is an effective method for reducing the installed power, the increase of the weight of the hydraulic system pipeline can be avoided, the layout difficulty of the engine room pipeline is reduced, an intermittent working mechanism can be adopted in a task-free stage occupying most flight time, and the efficiency of the hydraulic system is greatly improved.
In addition, in the flight process of the airplane, the situation that part of pump sources are out of power may occur, at the moment, the flight safety is guaranteed to be the highest priority, and in the situation, the onboard emergency hydraulic system can also meet the instant requirement of onboard hydraulic users on emergency energy.
Patents [ application No.: 201510958704.4, a transient cabin door actuating system based on accumulator flow compensation is proposed, which can only store the hydraulic oil at the current working pressure of the airborne system and has no supercharging capacity. Patents [ application No.: 201510959136.X discloses a warplane capsule door transient actuating system based on a quantitative motor principle, a hydraulic pump is driven by a hydraulic motor to boost and store energy, but the requirement of emergency energy cannot be met when a main hydraulic system fails. Patents [ application No.: 201710554477.8, the disclosure provides an electric supercharging energy storage cabin door actuating system, which is a fully electric supercharging energy storage solution, and once the motor fails, the cabin door actuating system cannot be used.
Disclosure of Invention
The invention provides an onboard emergency hydraulic system and method for electric supercharging energy storage flow compensation, which are used for realizing supercharging energy storage of an existing aircraft hydraulic system and can be used as an emergency hydraulic energy source.
The invention is realized by the following technical scheme:
an onboard emergency hydraulic system for electric supercharging energy storage flow compensation comprises an energy accumulator, a motor and a high-pressure pump, wherein an oil supply end of the onboard hydraulic system is communicated with the energy accumulator through an oil supply one-way valve, an oil return end of the onboard hydraulic system is connected with the energy accumulator through the high-pressure pump and the one-way valve, and the motor is connected with and controls the high-pressure pump; the accumulator is connected with an onboard hydraulic user through an electromagnetic valve.
Furthermore, an oil supply control valve is arranged between an oil supply end of the airborne hydraulic system and the oil supply one-way valve.
Furthermore, two one-way valves, namely an oil suction one-way valve and a pressurization one-way valve, are arranged on an oil path of the oil return end of the airborne hydraulic system, which is connected with the energy accumulator, the oil suction one-way valve is arranged between the oil return end of the airborne hydraulic system and the oil inlet of the high-pressure pump, and the pressurization one-way valve is arranged between the oil outlet of the high-pressure pump and the energy accumulator.
Furthermore, the electromagnetic valve is specifically an electromagnetic directional valve, the energy accumulator is connected with the P end of the electromagnetic directional valve, the A end and the B end of the electromagnetic directional valve are respectively connected with different execution directions of the airborne hydraulic user, and the T end of the electromagnetic directional valve is connected with the oil return end of the airborne hydraulic system.
And the energy accumulator is connected with an oil return end of the airborne hydraulic system through the unloading control valve and the safety valve respectively.
An onboard emergency hydraulic system and method for electric supercharging energy storage flow compensation comprises a conventional energy storage method, an emergency energy storage method and an onboard user execution method, wherein the emergency energy storage method is an energy storage method when an oil supply end of the onboard hydraulic system fails, and the onboard user execution method is a method for controlling an onboard actuator by using the system.
Further, the conventional energy storage method comprises the following steps:
step one, a first energy storage state: opening the oil supply control valve, keeping the unloading control valve closed, keeping the electromagnetic valve in a closed state, and communicating the oil supply end of the airborne hydraulic system with the energy accumulator and supplying oil until the pressure of the energy accumulator is equal to the pressure of the oil supply end of the airborne hydraulic system;
step two; a supercharging energy storage state: the unloading control valve is kept closed continuously, the oil supply control valve is closed, the electromagnetic valve is in a closed state, the motor is started and drives the high-pressure pump to work, oil is absorbed from the oil return end of the slave carrier hydraulic system and is pumped to the energy accumulator through the pressurization one-way valve until the pressure of the energy accumulator reaches the required energy storage pressure.
Further, the emergency energy storage method specifically comprises the following steps:
the unloading control valve is kept closed continuously, the oil supply control valve is closed, the electromagnetic valve is in a closed state, the motor is started and drives the high-pressure pump to work, oil is absorbed from the oil return end of the slave carrier hydraulic system and is pumped to the energy accumulator through the pressurization one-way valve until the pressure of the energy accumulator reaches the required energy storage pressure.
Further, the onboard user execution method specifically comprises the following steps:
the unloading control valve is kept closed, the oil supply control valve is closed, the electromagnetic valve is opened, the energy accumulator and the airborne hydraulic user are communicated, instantaneous high pressure is provided for the airborne hydraulic user, and the airborne hydraulic user is driven to quickly complete required actions.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention can provide instantaneous high-pressure large flow for the airborne hydraulic users, and reduce the installed power of the airplane hydraulic system;
(2) the on-board hydraulic system charges liquid to the energy accumulator to the working pressure of the on-board hydraulic system, and then the motor drives the high-pressure pump to perform pressurization energy storage, so that the efficiency is higher than that of a motor pressurization energy storage scheme;
(3) the motor and the high-pressure pump only work during pressurization, the required power size is smaller than that of an electric pressurization energy storage scheme, and the weight of a hydraulic system is favorably reduced;
(4) the system of the invention has simple composition, can still work when the main hydraulic system or the motor has faults, can be used as emergency hydraulic energy, and has higher reliability.
Drawings
FIG. 1 is a schematic diagram of an onboard emergency hydraulic system based on electric supercharging energy storage flow compensation.
Wherein, the device comprises 1-an oil supply control valve, 2-an oil supply one-way valve, 3-a pressure-increasing one-way valve, 4-a direct current motor, 5-a high-pressure pump, 6-an oil absorption one-way valve, 7-an energy accumulator, 8-an unloading control valve, 9-a safety valve and 10-an electromagnetic directional valve.
Detailed Description
This section is an example of the present invention and is provided to explain and illustrate the technical solutions of the present invention.
An onboard emergency hydraulic system for electric supercharging energy storage flow compensation comprises an energy accumulator 7, a motor 4 and a high-pressure pump 5, wherein an oil supply end of the onboard hydraulic system is communicated with the energy accumulator 7 through an oil supply one-way valve 2, an oil return end of the onboard hydraulic system is connected with the energy accumulator 7 through the high-pressure pump 5 and the one-way valve, and the motor 4 is connected with and controls the high-pressure pump 5; the accumulator 7 is connected with an onboard hydraulic user through an electromagnetic valve.
An oil supply control valve 1 is arranged between an oil supply end of the airborne hydraulic system and the oil supply one-way valve 2.
An oil return end of the airborne hydraulic system is connected with an oil way of the energy accumulator 7, two one-way valves, namely an oil suction one-way valve 6 and a pressurization one-way valve 3 are arranged on the oil way, the oil suction one-way valve 6 is arranged between the oil return end of the airborne hydraulic system and an oil inlet of the high-pressure pump 5, and the pressurization one-way valve 3 is arranged between an oil outlet of the high-pressure pump 5 and the energy accumulator 7.
The electromagnetic valve is specifically an electromagnetic directional valve 10, the energy accumulator 7 is connected with the P end of the electromagnetic directional valve 10, the A end and the B end of the electromagnetic directional valve 10 are respectively connected with different execution directions of an airborne hydraulic user, and the T end of the electromagnetic directional valve 10 is connected with an oil return end of an airborne hydraulic system.
The energy accumulator 7 is connected with an oil return end of the airborne hydraulic system through the unloading control valve 8 and the safety valve 9 respectively.
An onboard emergency hydraulic system and method for electric supercharging energy storage flow compensation comprises a conventional energy storage method, an emergency energy storage method and an onboard user execution method, wherein the emergency energy storage method is an energy storage method when an oil supply end of the onboard hydraulic system fails, and the onboard user execution method is a method for controlling an onboard actuator by using the system.
The conventional energy storage method comprises the following steps:
step one, a first energy storage state: the oil supply control valve 1 is opened, the unloading control valve 8 is kept closed, the electromagnetic valve is in a closed state, and the oil supply end of the airborne hydraulic system is communicated with the energy accumulator 7 and supplies oil until the pressure of the energy accumulator 7 is equal to the pressure of the oil supply end of the airborne hydraulic system;
step two; a supercharging energy storage state: and the unloading control valve 8 is kept closed continuously, the oil supply control valve 1 is closed, the electromagnetic valve is in a closed state, the motor 4 is started and drives the high-pressure pump 5 to work, oil is absorbed from the oil return end of the machine-mounted hydraulic system and is pumped to the energy accumulator 7 through the pressurization one-way valve 3 until the pressure of the energy accumulator 7 reaches the required energy accumulation pressure.
The emergency energy storage method specifically comprises the following steps:
and the unloading control valve 8 is kept closed continuously, the oil supply control valve 1 is closed, the electromagnetic valve is in a closed state, the motor 4 is started and drives the high-pressure pump 5 to work, oil is absorbed from the oil return end of the machine-mounted hydraulic system and is pumped to the energy accumulator 7 through the pressurization one-way valve 3 until the pressure of the energy accumulator 7 reaches the required energy accumulation pressure.
The airborne user execution method specifically comprises the following steps:
the unloading control valve 8 is kept closed, the oil supply control valve 1 is closed, the electromagnetic valve is opened, the energy accumulator 7 and the airborne hydraulic user are communicated, instantaneous high pressure is provided for the airborne hydraulic user, and the airborne hydraulic user is driven to quickly complete required actions.
Another embodiment of the present invention is described below with reference to the drawings.
An oil supply control valve 1 and an oil supply one-way valve 2 are arranged between the onboard hydraulic system oil supply loop and the energy accumulator 7, the oil supply control valve 1 is used for controlling the on-off of the onboard hydraulic system oil supply loop and the energy storage loop, and the oil supply one-way valve 2 allows the onboard hydraulic system oil supply loop to supply hydraulic oil to the emergency hydraulic system in a one-way mode.
An oil suction one-way valve 6 is arranged between the oil return loop of the airborne hydraulic system and the high-pressure pump 5, so that hydraulic oil can be sucked in the oil return loop of the airborne hydraulic system in one way when the direct-current motor 4 drives the high-pressure pump 5 to rotate; a pressurization one-way valve 3 is arranged between the high-pressure pump 5 and the energy accumulator 7, and the pressurization one-way valve 3 allows the high-pressure pump 5 to generate pressure oil to supply the hydraulic oil to the emergency hydraulic system in a one-way mode.
The outlets of the oil supply one-way valve 2 and the pressure boost one-way valve 3 are connected, so that the oil supply of the airborne hydraulic system and the oil supply of the high-pressure pump 5 cannot interfere with each other.
An unloading control valve 8 is arranged between the energy accumulator 7 and an oil return loop of the airborne hydraulic system, and when the system stops working or is overhauled, oil liquid in the energy accumulator 7 can be released.
And a safety valve 9 is arranged between the energy accumulator 7 and the oil return loop of the airborne hydraulic system and is used for setting the highest working pressure of the emergency hydraulic system.
A port P of the electromagnetic directional valve 10 is connected with the energy accumulator 7, a port T is connected with an oil return loop of the airborne hydraulic system, a port A and a port B are respectively connected with an airborne hydraulic user, and when the airborne hydraulic user needing instantaneous high pressure and large flow rate works, high-pressure oil in the energy accumulator 7 is controlled to rapidly drive the airborne hydraulic user.
The energy storage process of the energy accumulator 7 in the emergency hydraulic system is divided into two stages: an oil supply stage of the onboard hydraulic system and an oil supply stage of a high-pressure pump 5 driven by a direct current motor 4.
The oil supply stage of the airborne hydraulic system comprises the following steps: the direct current motor 4 is not started, the unloading control valve 8 is located at a cut-off position, the electromagnetic directional valve 10 is located at a middle cut-off position, the oil supply control valve 1 is adjusted to a communication position, the onboard hydraulic system fills liquid into the accumulator 7 in the emergency hydraulic system until the pressure of the accumulator 7 reaches the working pressure of the onboard hydraulic system, and then the oil supply control valve 1 is adjusted to the cut-off position.
The direct current motor 4 drives the high-pressure pump 5 to supply oil: after the oil supply stage of the airborne hydraulic system is finished, the oil supply control valve 1 and the unloading control valve 8 are located at the cut-off position, the electromagnetic directional valve 10 is located at the middle cut-off position, the direct current motor 4 is started, the direct current motor 4 drives the high-pressure pump 5 to suck oil from the oil return loop of the airborne hydraulic system, high-pressure oil is pumped into the energy accumulator 7 in the emergency hydraulic system, when the pressure of the energy accumulator 7 reaches the energy storage pressure set by the system, the direct current motor 4 is closed, and the energy storage process is finished.
When the on-board hydraulic users including but not limited to airplane landing gear, weapon cabin door, etc. which need instantaneous large flow need to work, the electromagnetic directional valve 10 is controlled to act, and the hydraulic system of the invention provides the instantaneous large flow needed by the function actuation for the on-board hydraulic users.
The emergency energy source system has an emergency energy source function and comprises two working conditions:
under a first working condition, when the main hydraulic system has a fault, the high-pressure pump 5 can be directly driven by the direct-current motor 4, oil is absorbed from an oil return loop of the slave-machine hydraulic system, and the energy is stored by filling liquid into the energy accumulator 7, so that emergency energy is provided for hydraulic system users including but not limited to aircraft landing gears, front wheel turning, braking and the like, and the flight safety of the aircraft is ensured.
Under the second working condition, when the direct current motor 4 or the high-pressure pump 5 fails, the onboard hydraulic system directly charges liquid into the energy accumulator 7 in the emergency hydraulic system, so that energy is stored in the energy accumulator 7, and although the working pressure of the emergency hydraulic system is reduced, the work of users of the hydraulic systems including but not limited to an aircraft landing gear, a front wheel turning part, a brake and the like can be guaranteed, so that the flight safety of the aircraft is guaranteed.
In conclusion, the hydraulic system has the remarkable advantages of simple structure, high reliability and high efficiency, and can bring higher energy efficiency benefit, economic benefit and safety benefit for the airborne hydraulic system.
Claims (9)
1. An onboard emergency hydraulic system for electric supercharging energy storage flow compensation is characterized by comprising an energy accumulator (7), a motor (4) and a high-pressure pump (5), wherein an oil supply end of the onboard hydraulic system is communicated with the energy accumulator (7) through an oil supply one-way valve (2), an oil return end of the onboard hydraulic system is connected with the energy accumulator (7) through the high-pressure pump (5) and the one-way valve, and the motor (4) is connected with and controls the high-pressure pump (5); the energy accumulator (7) is connected with an onboard hydraulic user through an electromagnetic valve.
2. The onboard emergency hydraulic system for flow compensation of electric supercharging and energy storage according to claim 1, characterized in that an oil supply control valve (1) is provided between the oil supply end of the onboard hydraulic system and the oil supply check valve (2).
3. The onboard emergency hydraulic system for flow compensation of electric supercharging and stored energy according to claim 1, wherein two check valves, namely an oil suction check valve (6) and a supercharging check valve (3), are arranged on an oil path connecting an oil return end of the onboard hydraulic system with the energy accumulator (7), the oil suction check valve (6) is arranged between the oil return end of the onboard hydraulic system and an oil inlet of the high-pressure pump (5), and the supercharging check valve (3) is arranged between an oil outlet of the high-pressure pump (5) and the energy accumulator (7).
4. The onboard emergency hydraulic system for electric pressurization energy storage flow compensation according to claim 1, wherein the electromagnetic valve is specifically an electromagnetic directional valve (10), the energy accumulator (7) is connected with the P end of the electromagnetic directional valve (10), the A end and the B end of the electromagnetic directional valve (10) are respectively connected with different execution directions of an onboard hydraulic user, and the T end of the electromagnetic directional valve (10) is connected with an oil return end of the onboard hydraulic system.
5. The onboard emergency hydraulic system for electric supercharging and energy storage flow compensation according to claim 1, further comprising an unloading control valve (8) and a safety valve (9), wherein the energy accumulator (7) is connected with an oil return end of the onboard hydraulic system through the unloading control valve (8) and the safety valve (9), respectively.
6. An onboard emergency hydraulic system and method for electric supercharging energy storage flow compensation, wherein the onboard emergency hydraulic system for electric supercharging energy storage flow compensation as claimed in any one of claims 1 to 5 is used, and is characterized by comprising a conventional energy storage method, an emergency energy storage method and an onboard user execution method, wherein the emergency energy storage method is an energy storage method when an oil supply end of the onboard emergency hydraulic system fails, and the onboard user execution method is a method for controlling an onboard actuator by using the system.
7. The onboard emergency hydraulic system and method for electric boost stored energy flow compensation according to claim 6, wherein the conventional energy storage method comprises the following steps:
step one, a first energy storage state: the oil supply control valve (1) is opened, the unloading control valve (8) is kept closed, the electromagnetic valve is in a closed state, and the oil supply end of the airborne hydraulic system is communicated with the energy accumulator (7) and supplies oil until the pressure of the energy accumulator (7) is equal to the pressure of the oil supply end of the airborne hydraulic system;
step two; a supercharging energy storage state: the unloading control valve (8) is kept closed continuously, the oil supply control valve (1) is closed, the electromagnetic valve is in a closed state, the motor (4) is started and drives the high-pressure pump (5) to work, oil is absorbed from the oil return end of the hydraulic system of the slave machine and is pumped to the energy accumulator (7) through the pressurization one-way valve (3) until the pressure of the energy accumulator (7) reaches the required energy accumulation pressure.
8. The onboard emergency hydraulic system and method for flow compensation of electric supercharging and energy storage according to claim 6, wherein the emergency energy storage method specifically comprises:
the unloading control valve (8) is kept closed continuously, the oil supply control valve (1) is closed, the electromagnetic valve is in a closed state, the motor (4) is started and drives the high-pressure pump (5) to work, oil is absorbed from the oil return end of the hydraulic system of the slave machine and is pumped to the energy accumulator (7) through the pressurization one-way valve (3) until the pressure of the energy accumulator (7) reaches the required energy accumulation pressure.
9. The onboard emergency hydraulic system and method for electric supercharging and energy storage flow compensation according to claim 6, wherein the onboard user-implemented method specifically comprises:
the unloading control valve (8) is kept closed, the oil supply control valve (1) is closed, the electromagnetic valve is opened, the energy accumulator (7) and the airborne hydraulic user are communicated, instantaneous high pressure is provided for the airborne hydraulic user, and the airborne hydraulic user is driven to quickly complete required actions.
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