CN106762865A - Retractable oil receiving device test bench - Google Patents

Abstract

The retractable oil receiving device test bench includes a hydraulic system, the hydraulic system includes an oil tank, a hydraulic system connected to the oil tank, an oil return system, and at least one test connection system connected to the hydraulic system and the oil return system; The hydraulic system includes either a manual hydraulic system or an electro-hydraulic system or a manual hydraulic system and an electro-hydraulic system; the electro-hydraulic system is connected with an electric control system; there is a The switch valve controls the on-off of the hydraulic system, the oil return system and the test connection system. The invention solves the problem that the existing aviation test system does not have specially equipped testing equipment for the oil receiving device, and can be applied to various aviation tests relying on the fuel supply of the oil receiving device, such as the aircraft horizontal tail folding and unfolding system and the landing gear retracting system. , It is no longer necessary to rely on the support of the local aviation industry department to carry out the testing work. Therefore, the test environment and test efficiency can be greatly improved.

Description

Retractable oil receiving device test bench

technical field

The invention belongs to the technical field of aviation test systems, and relates to a retractable oil receiver test bench.

Background technique

Aircraft performance testing and inspection is an important task in aircraft design and research, and it is also a comprehensive work that requires the cooperation of multiple systems of the aircraft to complete the testing and inspection work.

Take the plane tail folding and unfolding system and the landing gear retracting system as examples. These two systems are relatively important systems of the aircraft, and their working performance directly affects the good rate of the aircraft. Therefore, when doing regular work and troubleshooting as required, it is necessary to check the ground-related performance of the aircraft's horizontal tail folding and unfolding system and landing gear retraction system to ensure its good performance and reliable operation, which is an important task for maintenance personnel. work. The test work of the above system needs to rely on the oil receiving device.

At present, the naval aviation unit is not equipped with retractable refueling device testing equipment, and cannot independently test the horizontal tail folding and unfolding system and the landing gear retracting system during routine maintenance, troubleshooting, and regular inspections, and must rely on the local aviation industry. The testing work can only be carried out with the support of the department.

In addition to the folding and unfolding system of the horizontal tail of the aircraft and the retracting and retracting system of the landing gear, the testing and testing of other systems that require the cooperation of the oil receiving system also require the application of oil receiving device test equipment.

Therefore, there is an urgent need for a reliable, fully functional, high-precision, easy-to-operate and easy-to-maintain retractable refueling device test bench, which will play an important role in ensuring that the aircraft completes performance testing, improves the good rate of the aircraft, and ensures flight safety. significance.

Contents of the invention

The object of the present invention is to provide a retractable refueling system test bench for aircraft performance testing.

To achieve the above object, the present invention provides the following technical solutions:

The retractable oil receiving device test bench includes the hydraulic system, the hydraulic system includes the oil tank, the hydraulic system connected to the oil tank, the oil return system, and at least one test connection system connected to the hydraulic system and the oil return system; the hydraulic system includes manual One of the hydraulic system and the electro-hydraulic system or including the manual hydraulic system and the electro-hydraulic system; the electro-hydraulic system is connected with an electric control system; a switch valve is set between the hydraulic system and the oil return system and the test connection system to control the hydraulic system On-off with the oil return system and the test connection system.

Further, the electrohydraulic system includes an electric pump, the oil outlet of the oil tank is connected to the oil inlet of the electric pump through the oil suction filter element, the oil supply valve of the electric pump; the oil outlet of the electric pump passes through the oil outlet filter element, the check valve and the oil outlet cut-off The valve is connected to the on-off valve; the oil outlet of the electric pump is also connected with the fuel tank through the safety valve; the oil outlet of the one-way valve is also connected with the oil tank through the pressure regulating stop valve; the oil outlet of the one-way valve is connected with the pressure gauge of the electrohydraulic system; An unloading overflow valve is installed between the valve and the oil outlet shut-off valve of the electric pump.

Furthermore, the electrohydraulic system also includes an accumulator branch connected to the oil inlet end of the electric pump oil outlet shut-off valve, and an accumulator and an energy storage pressure gauge are arranged on the accumulator branch.

Further, the manual hydraulic system includes a hand pump, the oil outlet of the oil tank is connected to the oil inlet of the hand pump through the oil suction filter element, the oil supply valve of the hand pump; the oil outlet of the hand pump is cut off through the oil outlet filter element, the check valve and the hand pump The valve is connected to the on-off valve; the oil outlet of the one-way valve is also connected with the fuel tank through the pressure regulating stop valve; the oil outlet of the one-way valve is also connected with a pressure gauge of the manual hydraulic system.

Further, the oil return system includes an oil return cut-off valve, an oil return filter element, and an oil return valve sequentially connected from the end of the test connection system to the oil return port of the fuel tank; the oil outlet end of the oil return stop valve is connected to the switch valve.

Further, it includes a two-way test connection system, the on-off valve is a three-position four-way valve, its oil inlet is connected to the hydraulic system, its working oil port is respectively connected to the two-way test connection system, and its oil return port is connected to the oil return system.

Further, the one-way or two-way test connection system also divides the test connection branch.

Further, the test connection system and the test connection branch include interconnected high-pressure long hoses and extension nozzles, the end of the extension nozzle is connected to the switch valve, and the end of the high-pressure long hose is connected to the system under test.

Further, it includes the test bench box, which includes the main control panel and the component box; the hydraulic system, the oil return system and the test connection system are arranged inside and outside the component box; the hand pump is arranged on the outer wall of the component box, and the outer wall of the component box is also It is provided with an oil nozzle and a winch for winding a high-pressure long hose, wherein the oil nozzle communicates with the hydraulic system and the oil return system respectively.

Furthermore, there are multiple pressure gauges in the system on the main control panel, which are respectively connected to the pressure gauges of the electro-hydraulic system, the pressure gauges of the manual hydraulic system and the pressure gauges of the accumulator; Pump pressure regulating valve, electric pump oil supply valve and oil return switch valve.

The beneficial effects of the present invention are:

(1) The present invention provides a kind of refueling device test bench that can be applied to aircraft test, has solved the problem that existing aviation test system does not have the problem of specially equipped refueling device test equipment, can be applied to aircraft horizontal tail folding and unfolding system and Various aeronautical tests that depend on the oil supply of the oil receiving device, such as the retractable and retractable system of the landing gear, no longer need to rely on the support of the local aviation industry department to carry out the testing work. Therefore, the test environment and test efficiency can be greatly improved.

(2) The test system of the oil receiving device can be externally connected to multiple test pipelines, and each test pipeline can also be extended to set up a test branch, and the appropriate switch valve assembly can be replaced according to the test requirements to meet the test requirements.

(3) The test system configuration of the oil receiving device is designed with a manual hydraulic system and an electro-hydraulic system. One or two hydraulic systems can be used according to the needs. The structure is stable and flexible, and it is suitable for various application environments. The entire hydraulic system can output a hydraulic oil source with sufficient displacement, and can perform direction conversion and pressure adjustment.

(4) In terms of applicability and maintainability, a longer flexible conduit is used for long-distance connection with the aircraft, and after the test is completed, it is easy to store and store to ensure sufficient strength requirements.

Description of drawings

Figure 1 is a schematic diagram of the test bench structure of the retractable oil receiving device.

Figure 2 is a schematic diagram of the box structure of the test bench.

Figure 3 is a schematic diagram of the box structure of the test bench.

Figure 4 is a schematic diagram of the box structure of the test bench.

Figure 5 is a schematic diagram of the main control panel of the test bench.

Among them: 1-refueling port, 2-liquid level gauge, 3-oil tank, 4-oil suction filter element, 5-hand pump oil supply valve, 6-hand pump, 7-oil outlet filter element, 8-one-way valve, 9- Hand pump pressure regulating valve, 10-Manual hydraulic system pressure gauge, 11-Three-position four-way valve, 12-Protruding nozzle, 13-High pressure long hose, 14-Protruding nozzle, 15-High pressure long hose, 16-Extend nozzle, 17-High pressure long hose, 18-Extend nozzle, 19-High pressure long hose, 20-Oil return stop valve, 21-Oil return filter, 22-Oil return valve, 23-Hand Pump oil outlet stop valve, 24-oil suction filter element, 25-electric pump oil supply valve, 26-electric pump, 27-oil outlet filter element, 28-one-way valve, 29-unloading overflow valve, 30-safety valve, 31 - Electric pump pressure regulating cut-off valve, 32- Electrohydraulic system pressure gauge, 33- Accumulator, 34- Accumulator pressure gauge, 35- Electric pump oil outlet cut-off valve, 36- Test bench box, 37- Winding wheel , 38-main control panel, 39-oil nozzle, 40-oil drain ball valve

detailed description

The specific implementation manners of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the embodiments described in the specific implementation are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The retractable oil receiving device test bench includes an oil tank 3, a hydraulic system connected to the oil tank 3, an oil return system, and at least one test output system connected to the hydraulic system and the oil return system. Wherein, the test taking-out system can be configured according to the tests that need to be carried out. For example, in the present embodiment, the tests of the plane tail folding and unfolding system and the landing gear retracting system will be exemplified (because it can be applied to the landing gear retracting system). Release and other tests, so the test bench also becomes a retractable oil receiving device test bench), therefore, there are at least two routes for the test connection system.

The hydraulic system includes either the manual hydraulic system or the electro-hydraulic system or the manual hydraulic system and the electro-hydraulic system; the electro-hydraulic system is connected with an electric control system; a switch valve is set between the hydraulic system and the oil return system and the test connection system , control the on-off of the hydraulic system, the oil return system and the test connection system. The switch valve can be selected according to the test requirements. For example, in this embodiment, in order to cooperate with the test of the plane tail folding and unfolding system and the landing gear retraction system, the switch valve is a three-position four-way valve.

Among them, the manual hydraulic system relies on manual oil supply, and the electrohydraulic system relies on the electric control system to control the oil supply. According to the needs, the oil receiving device test bench can be equipped with a manual hydraulic system, or an electro-hydraulic system, or a manual and electric hydraulic system. The function of the switch valve is to control the opening and closing between the oil supply pipeline of the hydraulic system and the oil receiving pipeline of the test system, and provide an oil return branch at the same time.

Hereinafter, the specific configuration and principles of oil supply and oil return of the manual hydraulic system, electrohydraulic system and oil return system will be described in detail.

The electrohydraulic system includes an electric pump 26, the oil outlet of the fuel tank is connected to the oil inlet of the electric pump 26 through the oil suction filter element 24, the oil supply valve 25 of the electric pump; the oil outlet of the electric pump 26 passes through the oil outlet filter element 27, the one-way valve 28 and the The oil outlet stop valve 35 of the electric pump is connected to the on-off valve; the oil outlet of the electric pump 26 is also communicated with the fuel tank 1 through the safety valve 30; An electro-hydraulic system pressure gauge 32 is connected to the oil outlet; an unloading overflow valve 29 is installed between the one-way valve 28 and the oil outlet stop valve 35 of the electric pump.

Further, the electrohydraulic system also includes an accumulator branch connected to the oil inlet end of the electric pump oil outlet shut-off valve 35 , and an accumulator 33 and an accumulator pressure gauge 34 are arranged on the accumulator branch. The function of the accumulator branch is to stabilize and maintain the pressure, which makes the system work safer and more reliable.

The manual hydraulic system includes a hand pump 6, the oil outlet of the oil tank 3 passes through the oil suction filter element 4, the hand pump oil supply valve 5 is connected to the oil inlet of the hand pump 6; the oil outlet of the hand pump 6 passes through the oil outlet filter element 7, one-way Valve 8 and hand pump oil outlet cut-off valve 23 are connected to the switch valve; the oil outlet of check valve 8 is also communicated with fuel tank 3 through manual valve 9; the oil outlet of check valve 8 is also connected with manual hydraulic system pressure gauge 10.

The working medium in the oil tank 3 adopts No. YH-15 hydraulic oil, and the function of the oil tank 3 is to provide hydraulic oil for the static pressure test. As an auxiliary design, an oil filling port 1 for adding hydraulic oil and a liquid level gauge 3 for displaying the liquid level of the hydraulic oil in the oil tank 3 are also arranged in the oil tank 3 .

When the electrohydraulic system is used, the electric pump 26 is the pressure source of the electrohydraulic system, and the electric control system is connected to supply power for the electric pump 26 of the electrohydraulic system. Put the oil outlet shut-off valve 35 of the electric pump in the fully open position. When the power supply is connected and the start button of the electric pump 26 is pressed, the electric pump 26 works, and the hydraulic oil in the oil tank 3 enters the electric pump 26 through the oil suction filter 24 and the electric pump oil supply valve 25, and after being pressurized by the electric pump 26, the high-pressure The oil liquid reaches the on-off valve after passing through the oil outlet filter element 27, the one-way valve 28, the unloading overflow valve 29, and the oil outlet shut-off valve 35 of the power supply pump.

System pressure is controlled by unloading overflow valve 29 and pressure regulating cut-off valve 31. The unloading overflow valve 29 is mainly used for oil pump unloading and safety overflow in the system. Generally, the maximum pressure of the unloading overflow valve 29 (that is, the maximum working pressure of the system) is adjusted to 21MPa. When the pump source pressure and system pressure rise to 21MPa (the unloading pressure of the unloading overflow valve 29), the unloading overflow valve 29 works, the oil pressure at the pump outlet is zero, the oil pump is unloaded, and the system pressure is between 18-21MPa When the system oil pressure drops to 18MPa, the oil pump stops unloading and supplies pressure to the system to 21MPa.

When the manual hydraulic system is used, the hand pump 6 pumps the hydraulic oil in the oil tank 3 through the hand pump oil supply valve 5, and then pressurizes it out. The pump pressure regulating valve 9 and the hand pump oil outlet cut-off valve 23 are then sent to the power test connection system. The working pressure of the supplied pressurized oil source is 0-28MPa, which is indicated by the high pressure gauge 10;

If an oil receiving device test bench is equipped with an electrohydraulic system and a manual hydraulic system at the same time, in order to prevent the two hydraulic systems from interfering, when using one hydraulic system, the pipeline of the other hydraulic system needs to be closed first. Specifically, when the electrohydraulic system is working, it is necessary to close the oil outlet valve 23 of the hand pump, and close the oil circuit between the manual hydraulic system and the test pipeline; The oil cut-off valve 35 closes the oil circuit of the electrohydraulic system and the test system.

The oil return system includes an oil return cut-off valve 20, an oil return filter element 21 and an oil return valve 22 connected in sequence from the end of the test connection system to the oil return port of the oil tank. Wherein, the oil outlet end of the oil return cut-off valve 20 is connected to the switch valve.

The function of the oil return part mainly imports the oil return of the test part into the oil tank 3 smoothly through the oil return filter element 21 and the oil return valve 22 . The liquid level in the fuel tank 3 is indicated by the liquid level gauge 2, and the fuel tank 3 is released to open the oil release ball valve 40, and the fuel tank 3 can be refueled through the filler port 1.

Further provide a kind of installation structure of the test bench of the oil receiving device, including the test bench body 26, the test bench body 26 includes the main control panel 38, the component box; the hydraulic system, the oil return system and the test connection system are arranged inside and outside the component box , wherein various valve components are set inside the component box; the hand pump 6 is set on the outer wall of the component box, and the outer wall of the component box is also provided with an oil nozzle and a winch for winding a high-pressure long hose, wherein the oil nozzle is separated from the hydraulic system. , The oil return system is connected.

Further, the main control panel 38 is provided with a plurality of system pressure gauges, which are divided into system pressure gauges, electric pump outlet pressure gauges and hand pump outlet pressure gauges, which are respectively connected to the electrohydraulic accumulator pressure gauge 34 and the manual hydraulic system pressure gauge 10. And electrohydraulic system pressure gauge 32; Also be provided with hand pump pressure regulating valve 9, hand pump oil outlet cut-off valve 23, electric pump pressure regulating valve 31, electric pump oil supply cut-off valve 35 and oil return valve cut-off valve 20 control keys.

The structure of the test bench box 36 integrates the structure of the functional components of the entire oil receiving device test bench.

As mentioned above, the test system of the oil receiving device can be used for the test of the aircraft horizontal tail folding and unfolding system and the landing gear retraction system. The oil port is connected to the hydraulic system, the working oil port is respectively connected to the two test outlet systems, and the oil return port is connected to the oil return system.

Two-way test connection system is designed, one is the branch where the extension nozzle 12 and the high-pressure long hose 13 are located, and is connected to the plane tail folding and unfolding system, in which the end of the extension nozzle 12 is connected to the three-position four-way valve 11 ; All the way is the branch where the nozzle 14 and the high-pressure long hose 15 are located, connected to the retractable system of the landing gear, wherein the end of the nozzle 14 is connected with the three-position four-way valve 11; the above two branches can be used for The two systems described above were tested separately. At the same time, the branch where the nozzle 14 and the long high-pressure hose 15 are located also extends another test branch, that is, the branch where the nozzle 16 and the long high-pressure hose 17 are located, wherein the end of the nozzle 16 It is connected with the three-position four-way valve 11.

The three-position four-way retractable valve 11 has three working positions: stowed, neutral, and flattened. The corresponding position can realize the direction conversion of the retractable pipeline. Since the position of the nozzle on the aircraft is relatively far away from the test bench casing 26, it is advisable that the high-pressure long hose needs to be provided with a length of 8-10 meters.

Claims (10)

1. extendible oil-receiving device testing stand, it is characterised in that：Including hydraulic system, the hydraulic system includes fuel tank and oil Case connection hydraulic system, oil return system, and be connected with hydraulic system and oil return system at least all the way test pick out system；

The hydraulic system includes hand-hydraulic system and electro-hydraulic system alternative one or including hand-hydraulic system and electricity Hydrodynamic pressure system；

Electro-hydraulic system is connected with electric-control system；

The hydraulic system and oil return system, experiment are provided with switch valve, control hydraulic system and oil return system between picking out system System and experiment pick out the break-make of system.

2. extendible oil-receiving device testing stand as claimed in claim 1, it is characterised in that：The electro-hydraulic system includes electricity Dynamic pump, fuel tank oil-out connects electrodynamic pump oiler through oil suction filter core, electric pump delivery valve；Electrodynamic pump oil-out is sequentially through fuel-displaced filter Core, check valve and electric pump go out oil cut-off valve and connect switch valve；Electrodynamic pump oil outlet end is also connected through safety valve with fuel tank；Check valve is fuel-displaced End also connects through pressure regulation stop valve with fuel tank；Check valve oil outlet end is connected with electro-hydraulic system pressure gauge；Check valve and electric pump Go out between oil cut-off valve and unloading overflow valve is installed.

3. extendible oil-receiving device testing stand as claimed in claim 2, it is characterised in that：Electro-hydraulic system also includes by electricity The accumulator branch road that the oil-inlet end of oil cut-off valve is picked out is pumped out, accumulator and energy-storage pressure are provided with the accumulator branch road Table.

4. extendible oil-receiving device testing stand as claimed in claim 1, it is characterised in that：The hand-hydraulic system includes hand Pump is shaken, fuel tank oil-out shakes and pump into hydraulic fluid port through oil suction filter core, hand pump delivery valve catcher；Hand pump oil-out is sequentially through fuel-displaced filter Core, check valve and hand pump stop valve connect switch valve；Check valve oil outlet end is also connected through pressure regulation stop valve with fuel tank；Check valve is fuel-displaced End is further connected with hand-hydraulic system pressure table.

5. extendible oil-receiving device testing stand as claimed in claim 1, it is characterised in that：The oil return system is included by testing Pick out oil return stop valve, oil return filter core and oil return valve that system end is sequentially connected with to tank drainback mouthful end；Oil return stop valve goes out Oily end is connected to switch valve.

6. the extendible oil-receiving device testing stand as described in any one in claim 1 to 6, it is characterised in that：Including two-way Experiment picks out system, and the switch valve is three-position four-way valve, and its oil inlet connects hydraulic system, and its actuator port connects two the examination of road respectively The system of picking out is tested, its oil return opening takes back oil system.

7. extendible oil-receiving device testing stand as claimed in claim 6, it is characterised in that：All the way or two-way experiment pick out system Also separate experiment and pick out branch road.

8. extendible oil-receiving device testing stand as claimed in claims 6 or 7, it is characterised in that：Experiment picks out system and experiment Pick out branch road include interconnection high pressure long soft-pipe and stretch out mouth, stretch out mouth end and connect with switch valve, high pressure long soft-pipe end be tested Test system connects.

9. the extendible oil-receiving device testing stand as described in any one in claim 1 to 6,8, it is characterised in that：Including examination Platform casing is tested, the testing stand casing includes main control surface plate, module case；The hydraulic system, oil return system and experiment are picked out System is arranged on inside and outside module case；The hand pump is arranged on component box outer wall, and component box outer wall is additionally provided with oil pipe mouth and use In the reel of winding high pressure long soft-pipe, wherein oil pipe mouth is connected respectively at hydraulic system, oil return system.

10. extendible oil-receiving device testing stand as claimed in claim 8, it is characterised in that：Set on the main control surface plate There is system multiple pressure gauge, electro-hydraulic system pressure gauge, hand-hydraulic system pressure table and energy storage pressure table are connected respectively； It is additionally provided with hand pump pressure regulator valve, hand pump delivery valve, electric pump pressure regulator valve, electric pump delivery valve and oil return switch valve.