CN219736782U - Circulation fatigue testing device for lubricating oil tank - Google Patents
Circulation fatigue testing device for lubricating oil tank Download PDFInfo
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- CN219736782U CN219736782U CN202320324629.6U CN202320324629U CN219736782U CN 219736782 U CN219736782 U CN 219736782U CN 202320324629 U CN202320324629 U CN 202320324629U CN 219736782 U CN219736782 U CN 219736782U
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- oil tank
- lubricating oil
- negative pressure
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 71
- 238000009661 fatigue test Methods 0.000 title claims abstract description 16
- 239000003921 oil Substances 0.000 claims abstract description 20
- 230000001012 protector Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 30
- 238000010438 heat treatment Methods 0.000 description 5
- 238000012356 Product development Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model discloses a circulation fatigue testing device for an oil tank, which comprises an oil system, a positive and negative pressure system and an environment bin, wherein an oil tank product to be tested is placed in the environment bin. The lubricating oil system is divided into an oiling loop and a lubricating oil tank closed circulation loop, and switching of the oiling loop and the lubricating oil tank closed circulation loop is realized through an electromagnetic valve and a one-way valve. The positive-negative pressure system comprises a positive pressure path and a negative pressure path, and the circulation switching of the positive pressure and the negative pressure in the lubricating oil tank is realized through the cooperation of the two electric valves and the vacuum pump between the positive pressure path and the negative pressure path. The utility model can test under the test condition, collect and record the parameters meeting the test requirement, and the test device is convenient for disassembly and assembly and accurate in test.
Description
Technical Field
The utility model belongs to the technical field of simulation tests, and particularly relates to a circulation fatigue testing device for an oil tank.
Background
The lubricating oil tank is an accessory matched with the lubricating system of the aircraft engine and is used for providing lubricating oil for all parts of the aircraft engine. In the initial stage of product development, the positive and negative pressure circulation of actual work cannot be simulated because of no related test technical support, so that the product development stage cannot be fully verified.
In recent years, the development speed of the engine is rapid, the engine is updated continuously, the test technology requirements on all aspects are higher and higher, and the service life requirements on all parts are prolonged, so that more reliable data are required to be provided for the development of the lubricating oil tank.
Based on the above-mentioned current situation, it is necessary to design a circulation fatigue testing device for the lubricating oil tank independently according to the working principle and the service life assessment requirement of the lubricating oil tank on the basis of carrying out detailed analysis and summary on the working principle of the lubricating oil tank on the engine.
Disclosure of Invention
The utility model aims to provide a circulating fatigue testing device for an oil tank, which can be used for testing under the required testing condition, and collecting and recording parameters meeting the testing requirement, and is convenient to assemble and disassemble and accurate in testing.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the device for testing the cycle fatigue of the lubricating oil tank comprises,
the lubricating oil system mainly comprises an oiling loop and a lubricating oil tank closed circulation loop, wherein:
the oiling loop mainly comprises an oil storage tank, a one-way valve, a lubricating oil pump, a heater, a flowmeter, a lubricating oil tank to be tested and an electromagnetic valve which are sequentially connected;
the closed circulation loop of the lubricating oil tank is mainly formed by sequentially connecting a lubricating oil pump, a heater, a flowmeter, a lubricating oil tank to be tested and an electromagnetic valve;
the oil injection loop and the closed circulation loop of the lubricating oil tank are switched back and forth through the coordination regulation and control between the electromagnetic valve and the one-way valve;
positive negative pressure system, positive negative pressure system includes positive pressure way and negative pressure way, wherein:
the positive pressure path mainly comprises an air source, a first electric valve and a first pressure sensor, and the output end of the first electric valve is connected to a lubricating oil tank to be tested;
the negative pressure path mainly comprises a second electric valve, a second pressure sensor and a vacuum pump, and the input end of the vacuum pump is connected to the lubricating oil tank to be tested through the second electric valve;
the positive pressure path and the negative pressure path are switched through the cooperation of the first electric valve, the second electric valve and the vacuum pump to realize the switching of the positive pressure and the negative pressure in the lubricating oil tank to be tested.
Alternatively, the device for testing the cycle fatigue of the lubricating oil tank further comprises an environment bin, wherein the lubricating oil tank to be tested is placed in the environment bin.
Alternatively, the solenoid valve is a two-position three-way solenoid valve.
Alternatively, the output end of the vacuum pump is filtered by an air purifier and then discharged.
Alternatively, the heater is provided with a temperature overheat protector.
Compared with the prior art, the testing device provided by the utility model has the following characteristics:
(1) The lubricating oil system realizes stable circulation of lubricating oil in the lubricating oil tank to be tested, and ensures the lubricating oil working state of the simulated lubricating oil tank on the engine;
(2) The positive and negative pressure system realizes the back and forth switching of the positive pressure and the negative pressure in the lubricating oil tank to be tested, and realizes the simulation of the change of the inner cavity pressure under the working condition of the lubricating oil tank;
(3) The heater has a self-protection function (overheat alarm and circuit breaking function) to avoid the continuous heating of the lubricating oil and the safety accidents;
(4) Setting temperature, pressure and other sensors at each important position of the testing device, and monitoring the testing conditions and various parameters in real time so as to accurately control various testing condition parameters; and each sensor is matched with each sensor signal connector for use, so that the number of sensor lines is reduced or wiring of each sensor is standardized, and the line confusion of the device during testing is avoided.
Drawings
FIG. 1 is a schematic diagram of a cycle fatigue testing apparatus for a lubricating oil tank according to the present utility model;
in the figure: 1-air source, 2-first motorised valve, 3-first pressure sensor, 4-second pressure sensor, 5-vacuum pump, 6-air filter, 7-environmental chamber, 8-temperature sensor, 9-flowmeter, 10-heating pipe, 11-lubricating oil pump, 12-oil storage tank, 13-second motorised valve, 14-solenoid valve, 15-check valve.
Detailed Description
The present utility model will be further described with reference to the drawings and the specific embodiments, but it should not be construed that the scope of the subject matter of the present utility model is limited to the following embodiments, and various modifications, substitutions and alterations made according to the ordinary skill and familiar means of the art to which this utility model pertains are included within the scope of the present utility model without departing from the above technical idea of the utility model.
As shown in figure 1, the circulation fatigue testing device of the lubricating oil tank designed for the utility model comprises a lubricating oil system, a positive and negative pressure system and an environment bin 7, wherein the lubricating oil tank product to be tested is placed in the environment bin 7, so that the whole circulation fatigue testing device is formed.
The lubricating oil system is divided into an oiling loop and a lubricating oil tank closed circulation loop, wherein:
the oiling loop comprises an oil storage tank 12, a one-way valve 15, a lubricating oil pump 11, a heater 10, a flowmeter 9, a lubricating oil tank to be tested (the product in fig. 1) and a solenoid valve 14, wherein the components are sequentially connected through pipelines to form the oiling loop, and the oiling loop corresponds to a pipeline B of the solenoid valve 14 in fig. 1;
the closed circulation loop of the lubricating oil tank comprises a lubricating oil pump 11, a heater 10, a flowmeter 9, the lubricating oil tank to be tested (the product in fig. 1) and a solenoid valve 14, wherein the components are sequentially connected through pipelines to form the closed circulation loop of the lubricating oil tank, and the closed circulation loop corresponds to the pipeline A of the solenoid valve 14 in fig. 1;
the matching regulation and control between the power-on valve 14 and the one-way valve 15 between the two loops of the oiling loop and the lubricating oil tank closed circulation loop are realized so as to realize back and forth switching.
The positive and negative pressure system is divided into a positive pressure path and a negative pressure path, wherein:
the positive pressure path comprises a gas source 1, a first electric valve 2 and a first pressure sensor 3, wherein the output end of the first electric valve 2 is connected to a lubricating oil tank to be tested (the product in fig. 1);
the negative pressure path comprises a second electric valve 13, a second pressure sensor 4, a vacuum pump 5 and an air filter 6, wherein the input end of the vacuum pump 5 is connected to a lubricating oil tank (product in fig. 1) to be tested through the second electric valve 13;
the positive pressure path and the negative pressure path are switched through the cooperation of the first electric valve 2, the second electric valve 13 and the vacuum pump 5 to realize the switching of the positive pressure and the negative pressure in the lubricating oil tank to be tested.
Alternatively, the heater 10 is provided with a temperature overheat safety protection device, which avoids the continuous heating of the lubricating oil, causing a safety accident.
Before formally performing the cyclic fatigue test, a test product (an oil tank to be tested) can be pre-installed on a special test fixture to perform the test, the installation posture of the oil tank on an aircraft is simulated, and the connection with each pipeline is convenient and reliable.
During testing, the test product is arranged on the test fixture and is correspondingly connected with the inlet pipeline and the outlet pipeline, and the lubricating oil tank to be tested is filled with lubricating oil with the required test amount. Before the test starts, whether the valves of all pipelines are normally opened or not and whether leakage exists or not is checked.
According to the cycle fatigue test requirement, firstly, opening the lubricating oil pump 11, opening the B path (oiling loop) of the electromagnetic valve 14, closing the A path (lubricating oil tank closed circulation loop), feeding quantitative lubricating oil into the lubricating oil tank to be tested through the lubricating oil flow feedback control of the flowmeter 9 when the set test flow is reached, closing the B path of the electromagnetic valve 14 after the quantitative lubricating oil is reached, opening the A path of the electromagnetic valve 14, starting the heating pipe 10, stopping heating after the temperature of the temperature sensor 8 reaches the test temperature requirement, starting the positive and negative pressure system, firstly opening the first electric valve 2, closing the second electric valve 13, pressurizing the lubricating oil tank to be tested through the air source 1, after the first pressure sensor 3 reaches the set positive pressure value, maintaining the pressure at fixed time, closing the first electric valve 2, opening the second electric valve 13, starting the vacuum pump 5, pumping the inner cavity pressure of the lubricating oil tank to be tested to be negative pressure, and after the value of the second pressure sensor 4 meets the set negative pressure value, maintaining the air through the air filter 6, filtering the pumped air, so that the cycle times can be automatically set according to the test requirement.
Claims (5)
1. Lubricating oil tank circulation fatigue testing arrangement, its characterized in that: comprising the steps of (a) a step of,
the lubricating oil system mainly comprises an oiling loop and a lubricating oil tank closed circulation loop, wherein:
the oiling loop mainly comprises an oil storage tank (12), a one-way valve (15), an oil pump (11), a heater (10), a flowmeter (9), an oil tank to be tested and an electromagnetic valve (14) which are sequentially connected;
the closed circulation loop of the lubricating oil tank is mainly formed by sequentially connecting a lubricating oil pump (11), a heater (10), a flowmeter (9), a lubricating oil tank to be tested and an electromagnetic valve (14);
the oiling loop and the closed circulation loop of the lubricating oil tank are switched back and forth through the cooperation regulation and control between the electromagnetic valve (14) and the one-way valve (15);
positive negative pressure system, positive negative pressure system includes positive pressure way and negative pressure way, wherein:
the positive pressure path mainly comprises an air source (1), a first electric valve (2) and a first pressure sensor (3), and the output end of the first electric valve (2) is connected to an oil tank to be tested;
the negative pressure path mainly comprises a second electric valve (13), a second pressure sensor (4) and a vacuum pump (5), and the input end of the vacuum pump (5) is connected to the lubricating oil tank to be tested through the second electric valve (13);
the positive pressure path and the negative pressure path are switched through the cooperation of the first electric valve (2), the second electric valve (13) and the vacuum pump (5), so that the positive pressure and the negative pressure in the lubricating oil tank to be tested are switched.
2. The circulation fatigue testing device for an oil tank according to claim 1, wherein: the environment bin (7) is further included, and an oil tank to be tested is placed in the environment bin (7).
3. The circulation fatigue testing device for an oil tank according to claim 1, wherein: the electromagnetic valve (14) is a two-position three-way electromagnetic valve.
4. The circulation fatigue testing device for an oil tank according to claim 1, wherein: the output end of the vacuum pump (5) is discharged after being filtered by an air filter (6).
5. The circulation fatigue testing device for an oil tank according to claim 1, wherein: the heater (10) is provided with a temperature overheat protector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320324629.6U CN219736782U (en) | 2023-02-27 | 2023-02-27 | Circulation fatigue testing device for lubricating oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320324629.6U CN219736782U (en) | 2023-02-27 | 2023-02-27 | Circulation fatigue testing device for lubricating oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219736782U true CN219736782U (en) | 2023-09-22 |
Family
ID=88059050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320324629.6U Active CN219736782U (en) | 2023-02-27 | 2023-02-27 | Circulation fatigue testing device for lubricating oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219736782U (en) |
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2023
- 2023-02-27 CN CN202320324629.6U patent/CN219736782U/en active Active
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