Fuel valve pressure test bench

Abstract

The utility model relates to the test bench field, and discloses a fuel valve pressure test bench comprising a test bench body; the operation table is mounted on the test bed body; the oil supply mechanism is mounted at the bottom of the test bed body and used for supplying oil to the valve; the oil return mechanism is arranged on one side of the oil supply mechanism and used for recovering fuel oil; the operation table comprises an air source switch which is installed on the operation table and used for controlling an air source to be conveyed to the oil supply mechanism. According to the utility model, through the arrangement of the pressure regulating switch, the adjustment of different fuel supply pressures of the fuel valve is realized, so that the test bench can simulate the working environments of an airplane in different flight stages and under different climate conditions, the comprehensiveness and accuracy of the test are improved, and through the arrangement of the fuel return mechanism for collecting and storing the recovered fuel, the test efficiency is improved. Through the control of the reversing valve, the flexible switching between oil supply and oil return can be realized, and the recycling of fuel oil is ensured.

Description

Technical Field

[0001] The utility model relates to the field of test benches, in particular to a fuel valve pressure test bench. Background Art

[0002] The performance test of the fuel system is a key link to ensure the stability and safety of aircraft operation. Among them, the fuel valve is a key component in the fuel system, and its performance directly affects the stability of fuel supply and the working efficiency of the engine. Therefore, it is particularly important to conduct a strict pressure test on the fuel valve.

[0003] The existing fuel valve pressure test bench has great limitations in providing test conditions. The test bench can often only provide a single pressure condition, which makes it difficult to simulate the various complex pressure environments that the fuel valve of the vehicle is subjected to during actual operation. The comprehensiveness and accuracy of the test results are limited. During the test, the fuel is often discarded after a single use, which not only causes a waste of resources, but also increases the risk of environmental pollution. There is a lack of an effective recycling control mechanism. Utility Model Content

[0004] In order to solve the above-mentioned problems, the present invention is implemented through the following technical solutions:

[0005] A fuel valve pressure test bench comprises: a test bench body; an operating table installed on the test bench body; an oil supply mechanism installed at the bottom of the test bench body and used to supply oil to the valve; an oil return mechanism arranged on one side of the oil supply mechanism and used to recover fuel; the operating table comprises: an air source switch installed on the operating table and used to control the air source to be delivered to the oil supply mechanism; a pressure regulating switch installed on the operating table and connected to the air source switch, the pressure regulating switch being used to control the air source pressure; an air pressure display meter installed on the operating table and connected to the air source switch, the air pressure display meter being used to display the air source pressure value.

[0006] The operating table also includes: a first oil supply switch installed on the operating table and connected to the oil supply mechanism; a first oil supply interface installed on the operating table and connected to the first oil supply switch; a first test pressure gauge installed on the operating table, connected between the first oil supply switch and the first oil supply interface, and used to display the oil supply pressure.

[0007] The operating table also includes: a second oil supply switch installed on the operating table and connected to the oil supply mechanism; a second oil supply interface installed on the operating table and connected to the second oil supply switch; a second test pressure gauge installed on the operating table and arranged on one side of the first test pressure gauge, the second test pressure gauge is connected between the second oil supply switch and the second oil supply interface, and is used to display the oil supply pressure.

[0008] The oil supply mechanism includes: an oil supply tank, which is arranged below the test bench body, and two oil supply pipelines are arranged on the oil supply tank, and a first oil supply interface and a second oil supply interface are respectively arranged on the two oil supply pipelines; an oil filter, which is installed at the oil outlet of the oil supply tank and is used to filter impurities in the fuel; a liquid level gauge, which is installed on the oil supply tank and is used to monitor the fuel level in the oil supply tank; a first safety valve, which is installed on the oil supply tank and is used to control the pressure of the oil supply tank; a first oil drain switch, which is installed at the bottom of the oil supply tank and is used to control the oil supply tank to discharge fuel; a pressure reducing valve, which is installed on the oil supply tank, and the air source switch is connected to the pressure reducing valve through an air pressure display gauge.

[0009] The oil return mechanism includes: an oil return tank, which is arranged below the test bench body; a one-way valve, which is installed on the oil return tank, and the oil return tank is connected to the oil supply tank through the one-way valve; a second safety valve, which is installed on the oil return tank and is used to control the pressure of the oil return tank; a second oil drain switch, which is installed at the bottom of the oil return tank and is used to control the discharge of fuel from the oil return tank; a reversing valve, which is installed on the oil return tank, the oil supply tank is connected to the reversing valve, and the pressure reducing valve is connected to the reversing valve.

[0010] The operating table also includes: a pressure reducing indicator, which is installed on the operating table and connected between the pressure reducing valve and the reversing valve; an oil return pneumatic switch, which is installed on the operating table, and one end of the oil return pneumatic switch is connected between the air source switch and the pressure reducing valve; a reversing adjustment rod, which is installed on the operating table and connected to the reversing valve; and an air source interface, which is installed on the operating table and connected to the air source switch.

[0011] The test bench body includes: an oil return groove, which is opened in the test bench body and connected to the oil return tank for recovering the test oil. A pneumatic switch valve is connected between the oil return groove and the oil return tank, and the oil return pneumatic switch is connected to the pneumatic switch valve.

[0012] It also includes: a bottom frame, which is installed at the bottom of the test bench body, and the oil supply tank and the oil return tank are both installed on the bottom frame.

[0013] The utility model provides a fuel valve pressure test bench. Compared with the prior art, it has the following beneficial effects:

[0014] 1. By setting the pressure regulating switch, the fuel valve can be adjusted to different fuel supply pressures, so that the test bench can simulate the working environment of the aircraft in different flight stages and climatic conditions, improving the comprehensiveness and accuracy of the test.

[0015] 2. By setting up an oil return mechanism to collect and store the recovered fuel, the flexible switching of oil supply and oil return can be achieved through the control of the reversing valve to ensure the recycling of fuel. This not only reduces the waste of resources, but also reduces the risk of environmental pollution. The overall use of standardized interfaces allows different structures to be easily combined and reconstructed to meet the testing requirements of valves of different models of aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure proposed by the utility model.

[0017] Figure 2 This is a schematic diagram of the operating table structure proposed by the utility model.

[0018] Figure 3 This is a structural schematic diagram of the oil supply mechanism proposed by the utility model.

[0019] Figure 4 This is a schematic diagram of the oil return mechanism structure proposed by the utility model.

[0020] Figure 5 This is a circuit connection diagram of the operating table, oil supply mechanism and oil return mechanism proposed by the utility model.

[0021] The reference numerals in the figure are:

[0022] 1. Test bench body; 101. Oil return tank;

[0023] 2. Bottom frame;

[0024] 3. Operation table; 301. First test pressure gauge; 302. Second test pressure gauge; 303. Pressure reduction indicator; 304. Air pressure display; 305. First oil supply switch; 306. Second oil supply switch; 307. Pressure regulating switch; 308. Air source switch; 309. First oil supply interface; 310. Second oil supply interface; 311. Oil return pneumatic switch; 312. Reversing regulating rod; 313. Air source interface;

[0025] 4. Oil supply mechanism; 401. Oil supply tank; 402. First safety valve; 403. First oil drain switch; 404. Pressure reducing valve; 405. Oil filter; 406. Liquid level gauge;

[0026] 5. Oil return mechanism; 501. Oil return tank; 502. Second safety valve; 503. Second oil drain switch; 504. Check valve; 505. Pneumatic switch valve; 506. Reversing valve. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the protection scope of the present invention.

[0028] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0029] Reference Figure 1-Figure 5 A fuel valve pressure test bench, comprising: a test bench body 1; an operating table 3, mounted on the test bench body 1; an oil supply mechanism 4, mounted at the bottom of the test bench body 1, for supplying oil to the valve; an oil return mechanism 5, arranged at one side of the oil supply mechanism 4, for recovering fuel; the operating table 3 comprises: an air source switch 308, mounted on the operating table 3, for controlling the air source to be delivered to the oil supply mechanism 4; a pressure regulating switch 307, mounted on the operating table 3, connected to the air source switch 308, the pressure regulating switch 307 is used to control the air source pressure; an air pressure display meter 304, mounted on the operating table 3, connected to the air source switch 308, the air pressure display meter 304 is used to display the air source pressure value; a first oil supply switch 305, mounted on the operating table 3, connected to the oil supply mechanism 4; a first oil supply interface 309, mounted on the operating table 3, connected to the first oil supply switch The first test pressure gauge 301 is installed on the operating table 3, connected between the first fuel supply switch 305 and the first fuel supply interface 309, and is used to display the fuel supply pressure; the second fuel supply switch 306 is installed on the operating table 3 and is connected to the fuel supply mechanism 4; the second fuel supply interface 310 is installed on the operating table 3 and is connected to the second fuel supply switch 306; the second test pressure gauge 302 is installed on the operating table 3, set on one side of the first test pressure gauge 301, the second test pressure gauge 302 is connected between the second fuel supply switch 306 and the second fuel supply interface 310, and is used to display the fuel supply pressure. The first fuel supply switch 305 and the second fuel supply switch 306 respectively control the switches of the two fuel supply pipelines, thereby realizing the switching of different fuel supply modes or fuel supply pressures of the fuel valve, and meeting the diverse fuel supply needs in the test.

[0030] The oil supply mechanism 4 includes: an oil supply tank 401, which is arranged below the test bench body 1. Two oil supply pipelines are arranged on the oil supply tank 401. The first oil supply interface 309 and the second oil supply interface 310 are respectively arranged on the two oil supply pipelines. The oil supply tank 401 provides a fuel storage space to support continuous oil supply and ensure the continuous progress of the test; an oil filter 405, which is installed at the oil outlet of the oil supply tank 401 and is used to filter impurities in the fuel, protect subsequent equipment from contamination, and extend the service life of the equipment; a liquid level meter 406, which is installed on the oil supply tank 401 and is used to monitor the fuel level in the oil supply tank 401, so as to facilitate timely replenishment of fuel. , to avoid oil supply interruption; the first safety valve 402, installed on the oil supply tank 401, is used to control the pressure of the oil supply tank 401, and automatically releases the pressure when the pressure of the oil supply tank 401 is too high to ensure the safety of the equipment; the first oil drain switch 403, installed at the bottom of the oil supply tank 401, is used to control the oil supply tank 401 to discharge fuel, so as to quickly discharge the fuel in the oil supply tank 401 and facilitate maintenance and inspection; the pressure reducing valve 404, installed on the oil supply tank 401, the air source switch 308 is connected to the pressure reducing valve 404 through the air pressure display meter 304, and the pressure reducing valve 404 is used to adjust the oil supply pressure to ensure that the oil supply is stable and meets the test requirements.

[0031] The oil return mechanism 5 includes: an oil return tank 501, which is arranged below the test bench body 1, to collect and store the recovered fuel, reduce waste and reduce costs; a one-way valve 504, which is installed on the oil return tank 501, and the oil return tank 501 is connected to the fuel supply tank 401 through the one-way valve 504, to ensure that the fuel can only flow back to the fuel supply tank 401 in one direction to prevent backflow; a second safety valve 502, which is installed on the oil return tank 501, and is used to control the pressure of the oil return tank 501, and automatically release the pressure when the pressure of the oil return tank 501 is too high to ensure the safety of the equipment; a second oil drain switch 503, which is installed at the bottom of the oil return tank 501 , used to control the discharge of fuel from the return oil tank 501, which is convenient for rapid discharge of the fuel in the return oil tank 501 and convenient for maintenance and inspection; the reversing valve 506 is installed on the return oil tank 501, the oil supply tank 401 is connected to the reversing valve 506, the pressure reducing valve 404 is connected to the reversing valve 506, the reversing valve 506, the pressure reducing indicator 303, the pressure reducing valve 404 and the air source switch 308 are all located on the same pipeline, one end of the return oil pneumatic switch 311 is also connected to this pipeline, and the other end is connected to the pneumatic switch valve 505, the pressure reducing valve 404 is used to control the flow direction of the fuel to achieve flexible switching between oil supply and oil return.

[0032] The operating table 3 also includes: a pressure reduction indicator 303, which is installed on the operating table 3 and connected between the pressure reducing valve 404 and the reversing valve 506, and intuitively displays the air pressure after the pressure reducing valve 404, so that the operator can accurately adjust the air source pressure; an oil return pneumatic switch 311, which is installed on the operating table 3, and one end of the oil return pneumatic switch 311 is connected between the air source switch 308 and the pressure reducing valve 404, and controls the pneumatic switch valve 505 between the oil return groove 101 and the oil return tank 501 to realize automatic control of the oil return; a reversing adjustment rod 312, which is installed on the operating table 3 and connected to the reversing valve 506, so that the operator can manually switch the fuel flow direction; an air source interface 313, which is installed on the operating table 3 and connected to the air source switch 308.

[0033] The test bench body 1 includes: an oil return groove 101, which is opened in the test bench body 1 and connected to the oil return tank 501 for recovering the test oil. A pneumatic switch valve 505 is connected between the oil return groove 101 and the oil return tank 501, and the oil return pneumatic switch 311 is connected to the pneumatic switch valve 505.

[0034] The bottom frame 2 is installed at the bottom of the test bench body 1 , and the oil supply tank 401 and the oil return tank 501 are both installed on the bottom frame 2 .

[0035] During use, turn on the gas source switch 308, observe the pressure value of the air pressure display 304, adjust the pressure reducing valve 404 to the required pressure, turn on the first oil supply switch 305 or the second oil supply switch 306, and after stabilization, observe whether the pressure value of the first test pressure gauge 301 or the second test pressure gauge 302 reaches the required pressure. If it does not reach the required pressure, adjust the pressure reducing valve 404 to the required pressure, and record the test data after stabilization. After the test is completed, first open the oil return pneumatic switch 311 to return oil, and then adjust the reversing valve 506 to return oil, and wait for the test pressure to reach the required pressure. After the pressure value of the pressure gauge is zero, close the oil supply switch, open the oil return pneumatic switch 311 to work, adjust the reversing valve 506 to supply oil, and then remove the test piece. Repeat the above actions for the next test piece, adjust the reversing valve 506 to the oil return state to allow the accumulated oil in the return oil tank to enter the oil supply tank, observe the oil mark after the oil return is completed, adjust the reversing valve 506 to the oil supply state, if the oil return is slow, adjust the pressure reducing valve 404 to increase the oil return speed, close the air source switch 308 after completing the work, adjust the reversing valve 506 to the oil supply state after the pressure value of the pressure gauge is zero.

[0036] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0037] By setting the pressure regulating switch 307, the fuel valve can be adjusted to different fuel supply pressures, so that the test bench can simulate the working environment of the aircraft under different flight stages and climatic conditions, thereby improving the comprehensiveness and accuracy of the test.

[0038] By setting up an oil return mechanism 5 for collecting and storing recovered fuel, and through the control of the reversing valve 506, flexible switching between oil supply and oil return can be achieved to ensure the recycling of fuel, which not only reduces the waste of resources, but also reduces the risk of environmental pollution. In addition, the overall use of standardized interfaces allows different structures to be easily combined and reconstructed to meet the testing requirements of valves of different models of aircraft.

[0039] Thus, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the above disclosure, and it should be understood that in some cases, some features of the present invention will be adopted without corresponding use of other features without departing from the scope and spirit of the proposed utility model. Therefore, many modifications can be made to adapt specific environments or materials to the essential scope and spirit of the present utility model. The present utility model is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode for carrying out the present utility model, but the present utility model will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present utility model will be determined solely by the appended claims.

Claims

1. A fuel valve pressure test bench, characterized in that: include: Test bench body (1); An operating table (3) mounted on the test bench body (1); An oil supply mechanism (4) is installed at the bottom of the test bench body (1) and is used to supply oil to the valve; An oil return mechanism (5) is arranged on one side of the oil supply mechanism (4) and is used to recover the fuel oil; The operating table (3) comprises: An air source switch (308) is installed on the operating table (3) and is used to control the air source to be delivered to the oil supply mechanism (4); A pressure regulating switch (307) is installed on the operating table (3) and connected to the gas source switch (308). The pressure regulating switch (307) is used to control the gas source pressure; The air pressure display meter (304) is installed on the operating table (3) and connected to the air source switch (308). The air pressure display meter (304) is used to display the air source pressure value.

2. A fuel valve pressure test bench according to claim 1, characterized in that: The operating table (3) also includes: A first oil supply switch (305) is installed on the operating table (3) and connected to the oil supply mechanism (4); A first oil supply interface (309) is installed on the operating table (3) and is connected to the first oil supply switch (305); The first test pressure gauge (301) is installed on the operating table (3), connected between the first oil supply switch (305) and the first oil supply interface (309), and is used to display the oil supply pressure.

3. A fuel valve pressure test bench according to claim 2, characterized in that: The operating table (3) also includes: A second oil supply switch (306) is installed on the operating table (3) and connected to the oil supply mechanism (4); A second oil supply interface (310) is installed on the operating table (3) and is connected to the second oil supply switch (306); The second test pressure gauge (302) is installed on the operating table (3) and is arranged on one side of the first test pressure gauge (301). The second test pressure gauge (302) is connected between the second oil supply switch (306) and the second oil supply interface (310) and is used to display the oil supply pressure.

4. A fuel valve pressure test bench according to claim 3, characterized in that: The oil supply mechanism (4) comprises: An oil supply tank (401) is arranged below the test bench body (1), and two oil supply pipelines are arranged on the oil supply tank (401), and a first oil supply interface (309) and a second oil supply interface (310) are respectively arranged on the two oil supply pipelines; An oil filter (405) is installed at the oil outlet of the oil supply tank (401) and is used to filter impurities in the fuel; A liquid level meter (406) is installed on the fuel supply tank (401) and is used to monitor the fuel liquid level in the fuel supply tank (401); A first safety valve (402), installed on the oil supply tank (401), and used to control the pressure of the oil supply tank (401); A first oil drain switch (403) is installed at the bottom of the oil supply tank (401) and is used to control the oil supply tank (401) to drain fuel; The pressure reducing valve (404) is installed on the oil supply tank (401), and the gas source switch (308) is connected to the pressure reducing valve (404) via the gas pressure display meter (304).

5. A fuel valve pressure test bench according to claim 4, characterized in that: The oil return mechanism (5) comprises: An oil return tank (501) is arranged below the test bench body (1); A one-way valve (504) is installed on the oil return tank (501), and the oil return tank (501) is connected to the oil supply tank (401) via the one-way valve (504); A second safety valve (502) is installed on the oil return tank (501) and is used to control the pressure of the oil return tank (501); A second oil drain switch (503) is installed at the bottom of the oil return tank (501) and is used to control the oil return tank (501) to drain fuel; The reversing valve (506) is installed on the oil return tank (501), the oil supply tank (401) is connected to the reversing valve (506), and the pressure reducing valve (404) is connected to the reversing valve (506).

6. A fuel valve pressure test bench according to claim 5, characterized in that: The operating table (3) also includes: A pressure reducing indicator (303) is installed on the operating table (3) and connected between the pressure reducing valve (404) and the reversing valve (506); An oil return pneumatic switch (311) is installed on the operating table (3), and one end of the oil return pneumatic switch (311) is connected between the air source switch (308) and the pressure reducing valve (404); A reversing regulating rod (312) is mounted on the operating table (3) and connected to the reversing valve (506); An air source interface (313) is installed on the operating table (3) and is connected to the air source switch (308).

7. A fuel valve pressure test bench according to claim 6, characterized in that: The test bench body (1) comprises: The oil return groove (101) is provided in the test bench body (1) and is connected to the oil return tank (501) for recovering the test oil. A pneumatic switch valve (505) is connected between the oil return groove (101) and the oil return tank (501), and the oil return pneumatic switch (311) is connected to the pneumatic switch valve (505).

8. A fuel valve pressure test bench according to claim 5, characterized in that: Also includes: A bottom frame (2) is mounted on the bottom of the test bench body (1); the oil supply tank (401) and the oil return tank (501) are both mounted on the bottom frame (2).

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