A multifunctional aeronautical valve testing device and method

Abstract

The application provides a multifunctional aviation valve test device and method, which comprises the following steps: connecting a device lubricating oil pump with an oil inlet of a valve through an oil inlet pipeline; setting a first valve, a first flowmeter, a connecting port and an eleventh valve on the oil inlet pipeline; connecting a high-position lubricating oil tank with the device lubricating oil pump; setting a tenth valve between the device lubricating oil pump and the high-position lubricating oil tank; connecting the high-position lubricating oil tank with the connecting port; setting a ninth valve between the high-position lubricating oil tank and the connecting port; connecting a high-temperature lubricating oil tank with the device lubricating oil pump, the connecting port and a pressure relief port of the valve; connecting a metering lubricating oil tank with the pressure relief port and the high-temperature lubricating oil tank; setting a fourth valve between the metering lubricating oil tank and the pressure relief port; and setting a third valve between the high-temperature lubricating oil tank and the metering lubricating oil tank. The application can be used for various valve tests.

Description

Technical Field

[0001] This application belongs to the field of aviation engine lubricating oil pump testing technology, and particularly relates to a multifunctional aviation valve testing device and method. Background Technology

[0002] Various valves are installed in the lubrication system of aircraft engines. Commonly used valves include pressure regulating valves (including differential pressure valves), one-way valves, safety valves, and pressure relief valves. Valves are classified into normally open valves and normally closed valves according to their working method. Pressure regulating valves and one-way valves are normally open valves, while safety valves and pressure relief valves are normally closed valves.

[0003] Before being put into service, aircraft valves need to undergo various tests, including: valve opening pressure test; valve flow test; valve life test; valve opening cycle test; valve leakage test; and differential pressure valve test. Currently, different types of valve tests require different testing devices, and there is no universal valve testing device. Summary of the Invention

[0004] The purpose of this invention is to provide a multifunctional aviation valve testing device and method that can perform the above-mentioned tests.

[0005] In a first aspect, this application provides a multifunctional aircraft valve testing device, the device comprising: The equipment's lubricating oil pump is connected to the oil inlet of a valve via an oil inlet pipeline; the oil inlet pipeline is equipped with a first valve, a first flow meter, a connection port, and an eleventh valve; A high-level lubricating oil tank is connected to the lubricating oil pump of the equipment. A tenth valve is provided between the lubricating oil pump of the equipment and the high-level lubricating oil tank. The high-level lubricating oil tank is also connected to the connection port. A ninth valve is provided between the high-level lubricating oil tank and the connection port. A high-temperature lubricating oil tank is connected to the lubricating oil pump of the equipment, the connection port, and the pressure relief port of the valve, respectively. A metering lubricating oil tank is connected to both the pressure relief port and the high-temperature lubricating oil tank. A fourth valve is provided between the metering lubricating oil tank and the pressure relief port, and a third valve is provided between the high-temperature lubricating oil tank and the metering lubricating oil tank.

[0006] Preferably, the first flow meter is located between the first valve and the eleventh valve, and the connection port is located between the first flow meter and the eleventh valve.

[0007] Preferably, the first valve is located near the lubricating oil pump of the equipment, and the eleventh valve is located near the valve.

[0008] Preferably, the high-level lubricating oil tank is equipped with a vent valve.

[0009] Preferably, the high-temperature lubricating oil tank is equipped with a thermometer and a vent valve.

[0010] Preferably, the high-temperature lubricating oil tank is connected to the connection port via a main pipeline and a first sub-pipeline; the first sub-pipeline is connected to the main pipeline, and a second valve and a first pressure gauge are installed on the main pipeline; a sixth valve and a second pressure gauge are installed on the first sub-pipeline. The high-temperature lubricating oil tank is connected to the pressure relief port via a main pipeline and a second sub-pipeline. The main pipeline is connected to the second sub-pipeline, and a seventh valve is installed on the second sub-pipeline. The high-temperature oil tank is connected to the pressure relief port through a third sub-pipeline, and a second flow meter and a fifth valve are installed on the third sub-pipeline; the high-temperature lubricating oil tank forms a loop with the main pipeline, the first sub-pipeline, the pressure relief port, and the second sub-pipeline.

[0011] Preferably, the device further includes: The third pressure gauge is connected to the pressure sensing port of the valve; wherein, the third pressure gauge is also connected to the pipeline between the ninth valve and the connection port through the eighth valve.

[0012] Secondly, this application also provides a multifunctional aviation valve testing method, the method comprising: using the aforementioned apparatus to perform valve opening pressure test, valve flow test, valve life test, valve opening number test, valve leakage test, and differential pressure valve test.

[0013] The beneficial technical effects of this application are as follows: This application has a wide range of applications, and the maximum flow rate of the valve can reach 150L / min; it also has a wide range of test items, and can conduct various tests on various valves. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a multifunctional aviation valve testing device provided in an embodiment of this application; Figure 2 This is a schematic diagram illustrating the working principle of a multifunctional aviation valve testing device provided in this application embodiment. Detailed Implementation

[0015] Please see Figures 1-2 The present invention provides a multifunctional aviation valve testing device that can perform the above-mentioned tests.

[0016] The technical solution of the present invention includes four core components: a control system, three oil tanks, a worktable, and connecting pipelines and valves between the components.

[0017] The function of the control system is to control the operating conditions of various components in the testing apparatus: a) Control the start and stop of the lubricating oil pump and the speed of the lubricating oil pump to control the flow rate of the lubricating oil pump; b) Control the on / off state and opening degree of each valve to control the lubricating oil pressure; c) Control the temperature of the lubricating oil in the high-temperature oil tank; d) Control the amount of lubricating oil in the three oil tanks.

[0018] The functions of the three oil tanks are as follows: The elevated oil tank can provide lubricating oil for leakage tests. The tank has a volume of 5-10L, and its position can be raised or lowered according to the test requirements. The measuring oil tank can record the amount of lubricating oil leakage from the valve per unit time. The tank is made of a transparent material, with a scale marking every 10ml, and the maximum measuring scale is 1000ml. The high-temperature lubricating oil tank can provide room temperature and high-temperature lubricating oil for all tests except leakage tests. The tank has a volume of 100L and can heat the lubricating oil to 150℃.

[0019] The workbench is a 1000mm×1000mm×20mm aluminum alloy plate with 225 M6 threaded through holes evenly distributed on it. The test fixture can be fixed at any position on the workbench, and the valve is installed on the test fixture.

[0020] The purpose of connecting pipelines and valves is to ensure that each test item can complete the relevant test work according to the predetermined procedure.

[0021] The purpose of the test fixture is to install the valve and fix it on the workbench.

[0022] The equipment's lubricating oil pump is an electric pump that can provide a maximum flow rate of 150L / min. In addition, it can also transport some of the lubricating oil in the high-temperature lubricating oil tank to the high-level lubricating oil tank.

[0023] The function of the vent valve is to maintain the pressure balance inside and outside the high-temperature lubricating oil tank and the high-level lubricating oil tank.

[0024] In this embodiment of the application, a valve opening pressure test is provided. Step 1: Install the valve onto the test fixture; Step 2: Fix the test fixture on the workbench; Step 3: Heat the lubricating oil in the high-temperature lubricating oil tank to the temperature specified in the test document, and observe the temperature reading on the thermometer T. Step 4: Close all valves, then open valve 1, valve 2, valve 5, valve 6, and valve 11 in sequence. Step 5: Start the equipment's lubricating oil pump, observe the value of the first flow meter L1, and adjust the pump's flow rate according to the valve's operating conditions. Step 6: Gradually reduce the opening of the second valve 2 and observe the change in the first pressure gauge P1; Step 7: Record the value of the first pressure gauge P1 when the valve opens, which is the valve opening pressure.

[0025] Note: If the opening pressure meets the specifications in the technical documents, the test result is qualified. If it does not meet the specifications, the valve shall be adjusted according to the relevant technical requirements and the test shall be repeated until the test result is qualified, and then proceed to the next test item.

[0026] In this application embodiment, a valve flow test is provided. Step 8: Adjust the speed of the lubricating oil pump and the opening of the second valve 2 to make the value of the first flow meter L1 meet the requirements of the test document; Step 9: Record the value of the second flow meter L2, i.e., the flow rate of the valve. In this application embodiment, a valve life test is provided. Step 10: Maintain the equipment in working condition and operate it for the time specified in the test document.

[0027] In this application embodiment, a door opening count test is provided. Step 11: Increase the opening of the second valve 2 (or adjust the pressure of P1 to the value specified in the test document) to completely close the valve, then decrease the opening of the second valve 2 (or adjust the pressure of P1 to the value specified in the test document) to completely open the valve. Repeat this step up to the number of times specified in the test document.

[0028] Note: After completing step nine, you can skip step ten and proceed to this step.

[0029] In this application embodiment, a valve leakage test is provided. Step 1: Install the valve onto the test fixture; Step 2: Fix the test fixture on the workbench; Step 3: Heat the lubricating oil in the high-temperature lubricating oil tank to the temperature specified in the test document, and observe the temperature reading on the thermometer T. Step 4: Close all valves and open valve 10 (the tenth valve). Step 5: Start the equipment's lubricating oil pump and inject lubricating oil into the high-level lubricating oil tank to the maximum liquid level specified in the relevant documents. Then, close the equipment's lubricating oil pump and the tenth valve 10. Step 6: Adjust the position of the high-level lubricating oil tank so that the height difference between the lubricating oil level and the valve sealing surface meets the requirements of the test document; Step 7: Open valve 9, valve 11, and valve 4 in sequence; Step 8: When the lubricating oil level reaches the lowest mark of the measuring lubricating oil tank, start recording the relevant data according to the test document; Step 9: After the test is completed, open valve 6, valve 2 and valve 3, and close valve 11 to allow the lubricating oil in the high-level lubricating oil tank and the metering lubricating oil tank to flow back to the high-temperature lubricating oil tank.

[0030] In this application embodiment, a differential pressure valve test is provided ( Figure 2 (This is a schematic diagram of the working principle) Step 1: Install the valve onto the test fixture; Step 2: Fix the test fixture on the workbench; Step 3: Heat the lubricating oil in the high-temperature lubricating oil tank to the temperature specified in the test document, and observe the temperature reading on the thermometer T. Step 4: Close all valves, and open valve 1, valve 2, and valve 6. Step 5: Start the equipment lubricating oil pump, adjust the flow rate of the lubricating oil pump and the opening of the second valve 2 and the sixth valve 6, so that the first flow metering L1, the first pressure gauge P1 and the second pressure gauge P2 meet the requirements of the test document; Step 6: Keep the second valve 2 and the sixth valve 6 open, open the eleventh valve 11, the fifth valve 5, the seventh valve 7 and the eighth valve 8, turn the valve adjusting screw back to the highest position, and adjust the flow rate of the lubricating oil pump so that the flow rate of the lubricating oil pump and the pressure difference between the third pressure gauge P3 and the first pressure gauge P1 meet the requirements of the test document. Step 7: Adjust the adjusting screw until the flow rate reaches the range specified in the test document. The pressure difference between the third pressure gauge P3 and the first pressure gauge P1 should meet the requirements of the test document.

[0031] For example, the multifunctional aviation valve testing device provided by the present invention, through the combined use of a high-level lubricating oil tank and a metering lubricating oil tank, can check whether there is lubricating oil leakage and the amount of lubricating oil leakage under static working conditions.

[0032] For example, the multifunctional aviation valve testing device provided by the present invention can perform various tests on valves frequently used in aircraft engines.

Claims

1. A multifunctional aviation valve testing device, characterized in that, The device includes: The equipment's lubricating oil pump is connected to the oil inlet of a valve via an oil inlet pipeline; the oil inlet pipeline is equipped with a first valve, a first flow meter, a connection port, and an eleventh valve; A high-level lubricating oil tank is connected to the lubricating oil pump of the equipment. A tenth valve is provided between the lubricating oil pump of the equipment and the high-level lubricating oil tank. The high-level lubricating oil tank is also connected to the connection port. A ninth valve is provided between the high-level lubricating oil tank and the connection port. A high-temperature lubricating oil tank is connected to the lubricating oil pump of the equipment, the connection port, and the pressure relief port of the valve, respectively. A metering lubricating oil tank is connected to both the pressure relief port and the high-temperature lubricating oil tank. A fourth valve is provided between the metering lubricating oil tank and the pressure relief port, and a third valve is provided between the high-temperature lubricating oil tank and the metering lubricating oil tank.

2. The apparatus according to claim 1, characterized in that, The first flow meter is located between the first valve and the eleventh valve, and the connection port is located between the first flow meter and the eleventh valve.

3. The apparatus according to claim 2, characterized in that, The first valve is located near the lubricating oil pump of the equipment, and the eleventh valve is located near the valve.

4. The apparatus according to claim 1, characterized in that, The high-level lubricating oil tank is equipped with a vent valve.

5. The apparatus according to claim 1, characterized in that, The high-temperature lubricating oil tank is equipped with a thermometer and a vent valve.

6. The apparatus according to claim 5, characterized in that, The high-temperature lubricating oil tank is connected to the connection port via a main pipeline and a first sub-pipeline; the first sub-pipeline is connected to the main pipeline, and a second valve and a first pressure gauge are installed on the main pipeline; a sixth valve and a second pressure gauge are installed on the first sub-pipeline. The high-temperature lubricating oil tank is connected to the pressure relief port via a main pipeline and a second sub-pipeline. The main pipeline is connected to the second sub-pipeline, and a seventh valve is installed on the second sub-pipeline. The high-temperature oil tank is connected to the pressure relief port through a third sub-pipeline, and a second flow meter and a fifth valve are installed on the third sub-pipeline; the high-temperature lubricating oil tank forms a loop with the main pipeline, the first sub-pipeline, the pressure relief port, and the second sub-pipeline.

7. The apparatus according to claim 1, characterized in that, The device further includes: The third pressure gauge is connected to the pressure sensing port of the valve; wherein, the third pressure gauge is also connected to the pipeline between the ninth valve and the connection port through the eighth valve.

8. A multifunctional aircraft valve testing method, characterized in that, The method includes: using the apparatus as described in claim 7 to perform valve opening pressure test, valve flow test, valve life test, valve opening number test, valve leakage test, and differential pressure valve test.

Images