CN110259748B - Aircraft trailing edge flap folding and unfolding control combination valve - Google Patents
Aircraft trailing edge flap folding and unfolding control combination valve Download PDFInfo
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- CN110259748B CN110259748B CN201910540979.4A CN201910540979A CN110259748B CN 110259748 B CN110259748 B CN 110259748B CN 201910540979 A CN201910540979 A CN 201910540979A CN 110259748 B CN110259748 B CN 110259748B
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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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Abstract
The invention discloses a folding and unfolding control combination valve for a trailing edge flap of an airplane, which comprises a combination valve shell, a hydraulic change-over valve and a three-position four-way electromagnetic valve, wherein the combination valve shell is provided with a first valve seat and a second valve seat; the three-position four-way electromagnetic valve is arranged at the top of the combined valve shell, and the hydraulic change-over valve is arranged at one side of the combined valve shell; the three-position four-way electromagnetic valve is provided with a working oil port A, a working oil port B, an oil inlet and an oil return port; the working oil port A is connected with a working pipeline A; the working oil port B is connected with a working pipeline B; the working pipeline A and the working pipeline B are respectively connected with an execution device; the working oil port A and the working oil port B are also connected with a hydraulic change-over valve; the oil inlet is connected with a pressure supply pipeline, and the oil return port is connected with an oil return pipeline; the hydraulic change-over valve is connected with an unlocking pipeline which is connected with a brake device. According to the control combination valve, on the premise of ensuring the retraction pressure supply function of the trailing edge flap, a pure mechanical hydraulic valve is adopted to replace part of electromagnetic valves, so that the number of the electromagnetic valves is reduced, the control complexity is reduced, the integration level is high, the size and the weight are small, and the operation is reliable.
Description
Technical Field
The invention relates to the technical field of airplane system design, in particular to a combined valve for controlling retraction and release of a trailing edge flap of an airplane.
Background
The trailing edge flap retraction system is an important system of the airplane, has important influence on the takeoff and landing performance of the airplane, obviously increases the lift force of the airplane during takeoff, and greatly reduces the sliding distance of the airplane during landing. The hydraulic source pressure supply design directly influences the realization of the folding and unfolding functions of the trailing edge flap. At present, most of the hydraulic source pressure supply components of the airplane trailing edge flap retraction system comprise a two-position four-way electromagnetic lock, a three-position four-way flow servo valve, a two-position three-way electromagnetic change-over valve and a safety valve. The retraction pressure supply control is switched by controlling a two-position three-way electromagnetic switching valve through an electric signal, a two-position four-way electromagnetic lock is opened, and the retraction of the trailing edge flap is realized by controlling a three-position four-way flow servo valve through the electric signal. Due to the fact that the number of control objects is large, electromechanical control logic is complex, and the number of airplane cables needs to be increased.
Disclosure of Invention
In order to solve the problems, the invention provides a combined valve for controlling retraction and release of a trailing edge flap of an airplane.
The technical scheme adopted by the invention is as follows: a folding and unfolding control combination valve for a trailing edge flap of an airplane comprises a combination valve shell, a hydraulic change-over valve and a three-position four-way electromagnetic valve; the three-position four-way electromagnetic valve is arranged at the top of the combined valve shell, and the hydraulic change-over valve is arranged at one side of the combined valve shell; a connecting pipeline between the hydraulic change-over valve and the three-position four-way electromagnetic valve is arranged in the combined valve shell; the three-position four-way electromagnetic valve is provided with a working oil port A, a working oil port B, an oil inlet P and an oil return port T; the working oil port A is connected with a working pipeline A through a working nozzle A; the working oil port B is connected with a working pipeline B through a working nozzle B; the working pipeline A and the working pipeline B are respectively connected with an execution device; the working oil port A and the working oil port B are also connected with the hydraulic change-over valve; the oil inlet P is connected with a pressure supply pipeline through a pressure supply nozzle, and the oil return port T is connected with an oil return pipeline through an oil return nozzle; the hydraulic change-over valve is connected with an unlocking pipeline through an unlocking nozzle, and the unlocking pipeline is connected with a brake device.
Furthermore, a hydraulic oil lock is arranged in the shell and arranged on a connecting pipeline between the working oil port A and the working oil port B and the executing device.
Furthermore, the hydraulic oil lock is provided with a way A one-way valve, a way A safety valve, a way B one-way valve and a way B safety valve; when the trailing edge flap is retracted, the working oil port B is communicated with the oil inlet P, the B-path one-way valve is opened, and the oil inlet P is communicated with the working pipeline B; the working oil port A is communicated with the oil return port T, the A-way one-way valve is opened, and the oil return port T is communicated with the working pipeline A.
Furthermore, the hydraulic oil lock is provided with a way A one-way valve, a way A safety valve, a way B one-way valve and a way B safety valve; when the trailing edge flap is put down, the working oil port B is communicated with the oil return port T, the B-path one-way valve is opened, and the oil return port T is communicated with the working pipeline B; the working oil port A is communicated with the oil inlet P, the one-way valve on the A path is opened, and the oil inlet P is communicated with the working pipeline A.
Furthermore, the hydraulic oil lock is provided with a way A one-way valve, a way A safety valve, a way B one-way valve and a way B safety valve; when the trailing edge flap is in a locking state, the A-way one-way valve, the A-way safety valve, the B-way one-way valve and the B-way safety valve are closed, and oil in the working pipeline A and the working pipeline B is latched, so that the purpose of locking the trailing edge flap is achieved; when the latch pressure is ultrahigh, the A-path safety valve or the B-path safety valve is opened and communicated with the oil return pipeline, so that the pressure relief of high-pressure oil is realized, and the system components are prevented from being damaged by the overpressure of the high-pressure oil.
Further, the actuating device is a structure for controlling the retracting, putting down or locking state of the trailing edge flap.
Further, when the trailing edge flap is folded, the working oil port B is communicated with the oil inlet P to provide high-pressure oil, and meanwhile, the working oil port B is communicated with the hydraulic change-over valve, so that the high-pressure oil enters the unlocking pipeline to relieve the friction torque of the brake device; when the trailing edge flap is put down, the working oil port A is communicated with the oil inlet P to provide high-pressure oil, meanwhile, the working oil port A is communicated with the hydraulic change-over valve, the high-pressure oil enters the unlocking pipeline, and the friction torque of the brake device is relieved; when the trailing edge flap is in a locking state, an unlocking pipeline connected with the hydraulic change-over valve is communicated with the low-pressure oil return port T through the three-position four-way electromagnetic valve, so that the brake braking device outputs friction torque to lock the trailing edge flap.
Furthermore, the pressure supply pipeline is connected with a hydraulic pump, and the oil return pipeline is connected with a hydraulic oil tank.
The invention has the beneficial effects that:
1. according to the airplane trailing edge flap folding and unfolding control system, on the premise that the trailing edge flap folding and unfolding pressure supply function is guaranteed, a pure mechanical hydraulic valve is adopted to replace part of electromagnetic valves, the number of the electromagnetic valves is reduced, the control complexity is reduced, the integration level is high, the size and the weight are small, and the operation is reliable.
2. In the aircraft trailing edge flap folding and unfolding control system, the control of the trailing edge flap folding and unfolding control combination valve is simple, the locking and unlocking of the trailing edge flap are automatically controlled in a mechanical mode, the integration level is high, all sub-functions are connected through pipelines inside the valve body, a large number of external connecting pipelines are reduced, and the reliability is high.
Drawings
FIG. 1 is a perspective view of a combined control valve for retracting and extending a trailing edge flap of an aircraft according to the present invention;
FIG. 2 is a top view of the aircraft trailing edge flap retraction control combination valve of the present invention;
FIG. 3 is a schematic diagram of the structure of a combination valve of the present invention with a trailing edge flap of an aircraft in a locked position;
FIG. 4 is a schematic diagram of the oil circuit of the hydraulic changeover valve and the hydraulic lock when the trailing edge flap of the aircraft is in a lowered state according to the present invention;
FIG. 5 is a schematic diagram of the oil circuit of a three-position four-way solenoid valve when the trailing edge flap of the aircraft is in a down state according to the present invention;
FIG. 6 is a schematic diagram of the oil circuit of the hydraulic changeover valve and the hydraulic lock when the trailing edge flap of the aircraft is in the stowed state according to the present invention;
FIG. 7 is a schematic diagram of an oil path of a three-position four-way solenoid valve when a trailing edge flap of an aircraft is in a stowed state according to the present invention;
FIG. 8 is a schematic diagram of a pressure relief circuit of a hydraulic lock of the aircraft trailing edge flap of the present invention in a locked condition.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
The invention relates to a novel multifunctional integrated hydraulic valve technology in a wing flap retraction system at the rear edge of an airplane, which relates to the design of pressure supply and control of a hydraulic source of the airplane and is put into use. The trailing edge flap retraction pressure supply function comprises a driving load pressure supply function, a brake device pressure supply unlocking/oil return braking function and an oil liquid latching and overpressure protection function.
The present invention will be described in further detail below.
Example 1
As shown in fig. 1 to 8 (in the figures, the thick lines indicate high-pressure oil paths), the folding and unfolding control combination valve for the trailing edge flap of the airplane comprises a combination valve shell 1, a hydraulic change-over valve 2 and a three-position four-way electromagnetic valve 3; the three-position four-way electromagnetic valve 3 is arranged at the top of the combined valve shell 1, and the hydraulic change-over valve 2 is arranged at one side of the combined valve shell 1; a connecting pipeline between the hydraulic change-over valve 2 and the three-position four-way electromagnetic valve 3 is arranged in the combined valve shell 1; the three-position four-way electromagnetic valve 3 is provided with a working oil port A, a working oil port B, an oil inlet P and an oil return port T; the working oil port A is connected with a working pipeline A through a working nozzle A31; the working oil port B is connected with a working pipeline B through a working nozzle B32; the working pipeline A and the working pipeline B are respectively connected with an executing device, and the executing device is a structure for controlling the retraction, the putting down or the locking state of the trailing edge flap; the working oil port A and the working oil port B are also connected with a hydraulic change-over valve 2; the oil inlet P is connected with a pressure supply pipeline through a pressure supply nozzle 33, the pressure supply pipeline is connected with a hydraulic pump, an oil return port T is connected with an oil return pipeline through an oil return nozzle 34, and the oil return pipeline is connected with a hydraulic oil tank; the hydraulic switch valve 2 is connected to an unlocking line connected to a brake device through an unlocking nozzle 21.
When the trailing edge flap is in a locking state, an unlocking pipeline connected with the hydraulic change-over valve is communicated with the low-pressure oil return port T through the three-position four-way electromagnetic valve, so that the brake device outputs friction torque to lock the trailing edge flap.
Meanwhile, in order to improve the locking reliability of the trailing edge flap, a hydraulic oil lock 4 is further arranged in the shell, and the hydraulic oil lock is provided with an A-way one-way valve, an A-way safety valve, a B-way one-way valve and a B-way safety valve. And closing the A-way one-way valve, the A-way safety valve, the B-way one-way valve and the B-way safety valve to seal oil in the working pipeline. The hydraulic oil lock is arranged on a connecting pipeline between the working oil port A and the working oil port B and the executing device, and the trailing edge flap is prevented from moving by utilizing the characteristic of small oil liquid compression amount. In order to prevent the system components from being damaged by overpressure of the sealed oil, the hydraulic oil lock is designed to have an overpressure protection function, namely, the oil is released to release pressure after the pressure of the oil rises to a certain value. The A-way one-way valve and the B-way one-way valve are closed, and the A-way safety valve or the B-way safety valve is opened and communicated with an oil return pipeline, so that pressure relief of high-pressure oil is realized, and system components are prevented from being damaged by overpressure of the high-pressure oil.
When the trailing edge flap is retracted, the oil inlet P is communicated with the working oil port B to provide high-pressure oil, the working oil port B is communicated with the hydraulic change-over valve, and the high-pressure oil enters the unlocking pipeline to release the friction torque of the brake device; meanwhile, a B-path one-way valve of the hydraulic oil lock is opened, the oil inlet P is communicated with a working oil port B, and the working oil port B is communicated with a working pipeline B; the A way one-way valve of the hydraulic oil lock is opened, the working pipeline A is communicated with the working oil port A, and the working oil port A is communicated with the oil return port T.
When the trailing edge flap is put down, the oil inlet P is communicated with the working oil port A to provide high-pressure oil, the working oil port A is communicated with the hydraulic change-over valve, and the high-pressure oil enters the unlocking pipeline to release the friction torque of the brake device; meanwhile, an A-way one-way valve of the hydraulic oil lock is opened, an oil inlet P is communicated with a working oil port A, and the working oil port A is communicated with a working pipeline A; a B-path one-way valve of the hydraulic oil lock is opened, a working pipeline B is communicated with a working oil port B, and the working oil port B is communicated with an oil return port T.
The working principle is as follows: the trailing edge flap is folded and unfolded to have three working states, so that the three-position four-way electromagnetic valve is integrated, three working positions can be switched according to control requirements, meanwhile, the application of the two-position four-way electromagnetic lock is reduced, and the weight of the system is reduced.
The trailing edge flap is normally in a locking state, and the three-position four-way electromagnetic valve is in a neutral position at the moment, namely in a power-off state. In order to lock the trailing edge flap, an unlocking pipeline connected with the hydraulic change-over valve is communicated with low-pressure oil return through a three-position four-way electromagnetic valve, so that the brake braking device outputs friction torque to lock the trailing edge flap; meanwhile, in order to improve the locking reliability of the trailing edge flap, a hydraulic oil lock is designed to seal oil in a working pipeline, and the trailing edge flap is prevented from moving by utilizing the characteristic of small oil compression amount, so that the double-redundancy locking effect is realized on the trailing edge flap. In order to avoid the damage to system components caused by the overpressure of the sealed oil, the hydraulic oil lock is designed to have an overpressure protection function, namely, the hydraulic oil lock has an automatic pressure relief function when the pressure of the oil rises to a limit pressure due to the temperature and the like.
And the trailing edge flap is controlled to be put down in the takeoff and landing stages of the airplane, namely the trailing edge flap is in a put-down pressure supply state, and the lower end of the three-position four-way electromagnetic valve is controlled to supply power at the moment. In order to reduce control signals, simplify logic and reduce system weight, a purely mechanical hydraulic change-over valve is adopted, high-pressure oil at the lower end of a three-position four-way electromagnetic valve is automatically led into an unlocking pipeline by high-pressure oil, and therefore friction torque of a brake device is relieved. Meanwhile, high-pressure oil at the lower end of the electromagnetic valve is communicated with the working pipeline A through a hydraulic oil lock, and a rear end execution component of the high-pressure oil driving system lowers the trailing edge flap. In order to realize the simultaneous communication between the working pipeline A and the working pipeline B when pressure is supplied to any pipeline, the hydraulic oil lock is designed to have a bidirectional opening function, namely two channels of the hydraulic oil lock are opened simultaneously when the working pipeline A (or B) is supplied with pressure, the working pipeline A (or B) is communicated with the pressure supply pipeline P, and the working pipeline B (or A) is communicated with the oil return pipeline T.
And after the aircraft finishes the take-off or landing task, the trailing edge flap is controlled to be folded, namely the trailing edge flap is in a folded upper pressure supply state, and the upper end of the three-position four-way electromagnetic valve is controlled to supply power at the moment. The high-pressure oil liquid enters an unlocking pipeline through automatic switching of a hydraulic change-over valve, and the friction torque of the brake device is relieved. Meanwhile, high-pressure oil at the upper end of the electromagnetic valve is communicated with a working pipeline B through a hydraulic oil lock, and the high-pressure oil drives a rear end execution component of the system to fold the trailing edge flap.
According to the combined valve for controlling the retraction and the supply of pressure of the trailing edge flap, only the three-position four-way electromagnetic valve needs to be controlled externally in the working process of the retraction and the extension of the trailing edge flap, and other processes are all in a purely mechanical control mode, so that the valve is easy to realize and high in working reliability. The multifunctional integrated water heater has the advantages of multifunction integration, light weight, simple structure and control and high reliability.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (6)
1. A folding and unfolding control combination valve for a trailing edge flap of an airplane is characterized by comprising a combination valve shell, a hydraulic change-over valve and a three-position four-way electromagnetic valve; the three-position four-way electromagnetic valve is arranged at the top of the combined valve shell, and the hydraulic change-over valve is arranged at one side of the combined valve shell; a connecting pipeline between the hydraulic change-over valve and the three-position four-way electromagnetic valve is arranged in the combined valve shell;
the three-position four-way electromagnetic valve is provided with a working oil port A, a working oil port B, an oil inlet P and an oil return port T;
the working oil port A is connected with a working pipeline A through a working nozzle A; the working oil port B is connected with a working pipeline B through a working nozzle B; the working pipeline A and the working pipeline B are respectively connected with an execution device; the working oil port A and the working oil port B are also connected with the hydraulic change-over valve; the oil inlet P is connected with a pressure supply pipeline through a pressure supply nozzle, and the oil return port T is connected with an oil return pipeline through an oil return nozzle;
the hydraulic oil lock is arranged on a connecting pipeline between the working oil port A and the working oil port B and the actuating device, and the motion of the trailing edge flap is prevented by utilizing the characteristic of small oil compression amount, so that the double-redundancy locking effect on the trailing edge flap is realized; the hydraulic oil lock is provided with a path A one-way valve, a path A safety valve, a path B one-way valve and a path B safety valve; closing the A-path one-way valve, the A-path safety valve, the B-path one-way valve and the B-path safety valve, and sealing oil in the working pipeline; in order to prevent the system components from being damaged by overpressure of the sealed oil, the hydraulic oil lock is designed to have an overpressure protection function, namely, the oil is released to release pressure after the pressure of the oil rises to a certain value; the A-path one-way valve and the B-path one-way valve are closed, and the A-path safety valve or the B-path safety valve is opened and communicated with an oil return pipeline, so that pressure relief of high-pressure oil is realized, and the system components are prevented from being damaged by overpressure of the high-pressure oil;
the hydraulic change-over valve is connected with an unlocking pipeline through an unlocking nozzle, and the unlocking pipeline is connected with a brake device;
when the trailing edge flap is retracted, the working oil port B is communicated with the oil inlet P to provide high-pressure oil, the working oil port B is communicated with the hydraulic change-over valve, the high-pressure oil enters the unlocking pipeline to release the friction torque of the brake braking device, the B-path one-way valve of the hydraulic oil lock is opened at the same time, the oil inlet P is communicated with the working oil port B, the working oil port B is communicated with the working pipeline B, the A-path one-way valve of the hydraulic oil lock is opened, the working pipeline A is communicated with the working oil port A, and the working oil port A is communicated with the oil return port T; when the trailing edge flap is put down, the working oil port A is communicated with the oil inlet P to provide high-pressure oil, the working oil port A is communicated with the hydraulic change-over valve, the high-pressure oil enters the unlocking pipeline to release the friction torque of the brake braking device, the A-way one-way valve of the hydraulic oil lock is opened, the oil inlet P is communicated with the working oil port A, and the working oil port A is communicated with the working pipeline A; a B-path one-way valve of the hydraulic oil lock is opened, a working pipeline B is communicated with a working oil port B, and the working oil port B is communicated with an oil return port T; when the trailing edge flap is in a locking state, an unlocking pipeline connected with the hydraulic change-over valve is communicated with the low-pressure oil return port T through a three-position four-way electromagnetic valve, so that the brake braking device outputs friction torque to lock the trailing edge flap, and in order to prevent the system components from being damaged by overpressure of sealed oil, the hydraulic oil lock is designed with an overpressure protection function, namely, the hydraulic oil lock has an automatic pressure relief function when the pressure of the oil rises to a limit pressure due to temperature.
2. The aircraft trailing edge flap retraction control combination valve as claimed in claim 1, wherein the hydraulic oil lock is provided with a way a one-way valve, a way a safety valve, a way B one-way valve and a way B safety valve; when the trailing edge flap is retracted, the working oil port B is communicated with the oil inlet P, the B-path one-way valve is opened, and the oil inlet P is communicated with the working pipeline B; the working oil port A is communicated with the oil return port T, the A-way one-way valve is opened, and the oil return port T is communicated with the working pipeline A.
3. The aircraft trailing edge flap retraction control combination valve as claimed in claim 1, wherein the hydraulic oil lock is provided with a way a one-way valve, a way a safety valve, a way B one-way valve and a way B safety valve; when the trailing edge flap is put down, the working oil port B is communicated with the oil return port T, the B-path one-way valve is opened, and the oil return port T is communicated with the working pipeline B; the working oil port A is communicated with the oil inlet P, the one-way valve on the A path is opened, and the oil inlet P is communicated with the working pipeline A.
4. The aircraft trailing edge flap retraction control combination valve as claimed in claim 1, wherein the hydraulic oil lock is provided with a way a one-way valve, a way a safety valve, a way B one-way valve and a way B safety valve; when the trailing edge flap is in a locking state, the A-way one-way valve, the A-way safety valve, the B-way one-way valve and the B-way safety valve are closed, and oil in the working pipeline A and the working pipeline B is latched, so that the purpose of locking the trailing edge flap is achieved; when the latch pressure is ultrahigh, the A-path safety valve or the B-path safety valve is opened and communicated with the oil return pipeline, so that the pressure relief of high-pressure oil is realized, and the system components are prevented from being damaged by the overpressure of the high-pressure oil.
5. The aircraft trailing edge flap retraction control combination valve according to claim 1 wherein the actuator is configured to control the stowed, deployed or latched condition of the trailing edge flap.
6. The aircraft trailing edge flap retraction control combination valve according to claim 1, wherein the pressure supply line is connected with a hydraulic pump, and the oil return line is connected with a hydraulic oil tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910540979.4A CN110259748B (en) | 2019-06-21 | 2019-06-21 | Aircraft trailing edge flap folding and unfolding control combination valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910540979.4A CN110259748B (en) | 2019-06-21 | 2019-06-21 | Aircraft trailing edge flap folding and unfolding control combination valve |
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| CN110259748A CN110259748A (en) | 2019-09-20 |
| CN110259748B true CN110259748B (en) | 2021-08-06 |
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| CN201910540979.4A Active CN110259748B (en) | 2019-06-21 | 2019-06-21 | Aircraft trailing edge flap folding and unfolding control combination valve |
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| CN111071432B (en) * | 2019-12-06 | 2023-06-20 | 江西洪都航空工业集团有限责任公司 | Flap retraction control circuit for flight coach machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2907335B1 (en) * | 1998-03-24 | 1999-06-21 | 株式会社コミュータヘリコプタ先進技術研究所 | Flap drive for rotor blades |
| CN2412117Y (en) * | 2000-03-17 | 2000-12-27 | 杨耀庚 | High precision synchronous valve |
| US7338018B2 (en) * | 2005-02-04 | 2008-03-04 | The Boeing Company | Systems and methods for controlling aircraft flaps and spoilers |
| CN201220749Y (en) * | 2008-05-28 | 2009-04-15 | 江西洪都航空工业集团有限责任公司 | Hydraulic control system for folding and unfolding undercarriage |
| CN202510458U (en) * | 2012-03-06 | 2012-10-31 | 三一汽车起重机械有限公司 | Counterweight locking hydraulic system and engineering machinery |
| CN207361654U (en) * | 2017-10-18 | 2018-05-15 | 三峡大学 | Marine tow winch hydraulic system |
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