Lubricating oil filter to-be-bypassed sensor tester

Abstract

The utility model relates to a lubricating oil filter bypass sensor tester, which comprises a box body, an operation panel is arranged on the box body, a power supply, a test adapter, a temperature unit and a pressure unit are arranged in the box body, the operation panel is provided with a test interface, a temperature regulation panel and a pressure regulation knob, the temperature unit comprises a temperature platform, and the pressure unit comprises a gas source and a temperature platform. The test interface is arranged at the bottom of the box body, the test adapter is fixedly arranged above the test interface and is respectively connected with the power supply and the temperature regulation panel, the air source is fixed at the bottom of the box body and is respectively connected with the test adapter and the pressure regulation knob, and an input port of the test adapter is arranged in the test interface and is connected with a to-be-tested lubricating oil filter bypass sensor through the test interface; the temperature adjusting panel is used for setting the temperature of the temperature platform, the pressure adjusting knob is used for adjusting the output pressure of the air source, the output pressure is presented in the form of a portable function test box, the actual working temperature and the environment pressure of the sensor can be accurately simulated, and the test safety and accuracy are improved.

Description

Technical Field

[0001] This utility model relates to the field of sensor detection technology, and in particular to a tester for a lubricating oil filter bypass sensor. Background Technology

[0002] The engine oil filter bypass sensor is a crucial component indicating engine oil return blockage. In cases of severe oil return blockage, the crew shuts down the engine and performs a functional test on the oil filter bypass sensor according to the CRJ-700 aircraft AMM manual AMM-79-31-07-720-801. This test requires the simultaneous provision of two physical parameters: temperature and pressure. When the sensor detects both the corresponding temperature and pressure, it activates, and the test is complete.

[0003] Current testing methods typically use a hot air gun to heat the sensor's heat-sensing end. The manual requires a temperature range of 60-82℃, which is difficult to control and results in large temperature fluctuations, making operation challenging. In terms of pressure, an external air source is needed to adjust the pressure to 21-26psi, requiring external support to complete the test. This makes it difficult to simulate the actual operating temperature and environmental pressure of the sensor, resulting in poor operability and reduced test safety and accuracy. Summary of the Invention

[0004] Based on this, the present invention provides a lubricating oil filter bypass sensor tester to solve the technical problems of difficulty in simulating the actual working temperature and environmental pressure of the sensor, poor operability, and reduced test safety and accuracy.

[0005] Firstly, a bypass sensor tester for lubricating oil filters is provided, comprising:

[0006] The enclosure has an operation panel on top and contains a power supply, a test adapter, a temperature unit, and a pressure unit. The operation panel includes a test interface, a temperature control panel, and a pressure control knob. The temperature unit includes a temperature platform, and the pressure unit includes a gas source.

[0007] The temperature platform is located at the bottom of the chamber, with the test adapter fixed on top, which is connected to the power supply and the temperature control panel respectively.

[0008] The air source is fixed at the bottom of the chamber and connected to the test adapter and the pressure regulating knob respectively;

[0009] The input port of the test adapter is installed inside the test interface, and is connected to the sensing end of the bypass sensor of the oil filter to be tested through the test interface;

[0010] Temperature control panel, used to set the temperature of the temperature platform;

[0011] The pressure regulating knob is used to adjust the output pressure of the air source.

[0012] According to one possible embodiment of the present invention, the temperature unit further includes a temperature sensor. The sensing end of the temperature sensor is disposed on the test adapter, and the signal end of the temperature sensor is connected to the power supply to monitor the actual temperature of the test adapter in order to measure the true temperature of the bypass sensor of the lubricating oil filter under test.

[0013] According to one possible embodiment of the present invention, the pressure unit further includes an air tank, a pressure relief valve, and an overpressure valve. The air tank is connected to an air source, the air tank is connected to the pressure relief valve, the pressure relief valve is connected to the overpressure valve, and the overpressure valve is connected to a test adapter. The air tank, the pressure relief valve, and the overpressure valve are used together to adjust the pressure between the air source and the test adapter.

[0014] According to one possible embodiment of this utility model, thermal grease is provided between the temperature platform and the test adapter.

[0015] According to one possible embodiment of the present utility model, the operation panel further includes a digital display screen and a heating switch;

[0016] The digital display screen is connected to the signal terminal of the temperature sensor and is used to display the actual temperature collected by the test adapter from the temperature sensor.

[0017] The heating switch, connected to the temperature platform, is used to control the opening and closing of the temperature platform.

[0018] According to one possible embodiment of the present invention, the operation panel further includes a gas source switch and a pressure display screen;

[0019] Gas source switch, connected to the gas source, is used to control the opening and closing of the gas source;

[0020] The pressure display screen, connected to the air source, is used to display the voltage output by the air source.

[0021] According to one possible embodiment of this utility model, the operation panel is further provided with a pressure relief indicator, a buzzer indicator, a conduction indicator, a power indicator, a fuse indicator, a signal interface, a power switch, and a power input interface.

[0022] The pressure relief indicator light is used to indicate the pressure relief process between the air source and the test adapter;

[0023] The buzzer indicator light is used to indicate that the bypass sensor of the oil filter under test is in the conducting state during the test;

[0024] The continuity indicator light is used to indicate that the test circuit of the bypass sensor of the oil filter under test is connected;

[0025] The power indicator light is used to indicate whether the power is on;

[0026] The safety indicator light is used to indicate whether there is an abnormality in the test circuit of the oil filter to be tested, which is about to bypass the sensor.

[0027] The signal interface is connected to the signal terminal of the oil filter bypass sensor under test, and together with the test adapter, it is used to connect the oil filter bypass sensor tester and the oil filter bypass sensor under test.

[0028] A power switch is connected to a power source and is used to control the power supply to be turned on and off.

[0029] Power input interface for connecting an external power supply.

[0030] According to one possible implementation method in this embodiment of the present invention, the temperature platform is an industrial digital constant temperature base plate.

[0031] According to one possible implementation method in this embodiment of the present invention, the gas source is a digitally adjustable gas source.

[0032] According to one embodiment of the present invention, the temperature sensor is a temperature control sensor, which includes a thermocouple resistor and is used to automatically cut off power when the actual temperature of the bypass sensor of the oil filter under test exceeds a preset threshold.

[0033] According to the technical content provided in this utility model embodiment, the oil filter bypass sensor tester includes: a housing with an operation panel on top, and an internal power supply, test adapter, temperature unit, and pressure unit. The operation panel includes a test interface, a temperature control panel, and a pressure adjustment knob. The temperature unit includes a temperature platform, and the pressure unit includes an air source. The temperature platform is located at the bottom of the housing, with the test adapter fixedly placed on top, connected to the power supply and temperature control panel respectively. The air source is fixed at the bottom of the housing and connected to the test adapter and pressure adjustment knob respectively. The input port of the test adapter is installed inside the test interface and connected to the sensing end of the oil filter bypass sensor under test through the test interface. The temperature control panel is used to set the temperature of the temperature platform, and the pressure adjustment knob is used to adjust the output pressure of the air source. Presented in the form of a portable functional test box, it can accurately simulate the actual working temperature and environmental pressure of the oil filter bypass sensor, creating a constant temperature and pressure test environment, simplifying operation, ensuring reliable performance, and improving test safety and accuracy. Attached Figure Description

[0034] Figure 1 This is a partial schematic diagram of the external structure of the oil filter bypass sensor tester along the AB direction in one embodiment;

[0035] Figure 2 This is a partial schematic diagram of the internal structure of the oil filter bypass sensor tester in one embodiment. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details are presented in the various embodiments of this application to facilitate a better understanding of the application. However, the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments. The division of the various embodiments below is for ease of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0037] The following description, in conjunction with the accompanying drawings, details a lubricating oil filter bypass sensor tester provided in this embodiment. Figure 1 This is a partial schematic diagram of the external structure of a bypass sensor tester for a lubricating oil filter along the AB direction, provided as an embodiment of the present invention. Figure 2 This is a partial schematic diagram of the internal structure of a bypass sensor tester for a lubricating oil filter, provided as an embodiment of this utility model. The AB direction represents the direction from top to bottom, from A to B.

[0038] Reference Figure 1 and Figure 2 As shown, the oil filter bypass sensor tester 100 includes: a housing 110 with an operation panel 120 on top, and internally housing a power supply 130, a test adapter 140, a temperature unit 150, and a pressure unit 160. The operation panel 120 includes a test interface 121, a temperature control panel 122, and a pressure control knob 123. The temperature unit 150 includes a temperature platform 151, and the pressure unit 160 includes an air source 161. The housing is also equipped with a cover. Figure 1 As not shown in the diagram, when the oil filter bypass sensor tester is not in use or needs to be carried away, simply close the cover.

[0039] Temperature platform 151 is located at the bottom of chamber 110, specifically in direction B. A test adapter 140 is fixedly placed on top of temperature platform 151, connecting to power supply 130 and temperature control panel 122. Temperature control panel 122 is used to set the temperature of temperature platform 151, allowing for temperature adjustments. Temperature platform 151 can be an industrial digital thermostatic base plate. An industrial digital thermostatic base plate is an electric heating device with advantages such as high-precision temperature control, intuitive display, durability, and reliability. It includes heating elements and a heating plate surface. The temperature of the heating plate is controlled by adjusting the power output of the heating elements, maintaining it within a preset constant temperature range. Temperature platform 151 uses an industrial digital thermostatic base plate, eliminating the need for an external heat source; testing can be completed with just a few switches.

[0040] The gas source 161 is fixed to the bottom of the housing 110 and connected to both the test adapter 140 and the pressure regulating knob 123. The pressure regulating knob 123 is used to adjust the output pressure of the gas source 161, which is adjusted by turning the knob clockwise or counterclockwise. The gas source 161 is integrated inside the tester, eliminating the need for external gas cylinders or special connectors. Its pressure is digitally adjustable, and a target pressure can be set. The gas source 161 provides gas, which can be air, nitrogen, oxygen, carbon dioxide, etc., and can be selected according to specific needs and characteristics.

[0041] The input port 141 of the test adapter 140 is installed in the test interface 121 and is connected to the sensing end of the bypass sensor of the oil filter to be tested through the test interface 121.

[0042] By presenting the various control sources required for testing the oil filter bypass sensor, such as power supply, air supply, and temperature platform, in the form of a portable functional test box, it can accurately simulate the actual operating temperature and environmental pressure of the oil filter bypass sensor, create a constant temperature and pressure test environment, simplify operation, ensure reliable performance, and improve test safety and accuracy.

[0043] As one possible approach, the temperature unit 150 also includes a temperature sensor 152, with the sensing end a of the temperature sensor 152 disposed on the test adapter and the signal end b of the temperature sensor 152 connected to the power supply 130 for monitoring the actual temperature of the test adapter 140, thereby measuring the true temperature of the bypass sensor of the lubricating oil filter under test.

[0044] The temperature sensor can be a high-precision temperature control sensor, including a thermocouple resistor. When the actual temperature of the bypass sensor of the oil filter under test exceeds a preset threshold, it automatically cuts off power. The high-precision temperature control sensor collects the temperature of the test adapter and incorporates temperature compensation to accurately measure the actual temperature of the bypass sensor of the oil filter under test. After the bypass sensor of the oil filter under test is turned on, the temperature parameters are recorded.

[0045] As one possible implementation, the pressure unit 160 also includes an air tank 162, a pressure relief valve 163, and an overpressure valve 164. The air tank 162 is connected to the air source 161, the air tank 162 is connected to the pressure relief valve 163, the pressure relief valve 163 is connected to the overpressure valve 164, and the overpressure valve 164 is connected to the test adapter 140. The air tank 162, the pressure relief valve 163, and the overpressure valve 164 are used together to adjust the pressure between the air source 161 and the test adapter 140.

[0046] The air source 161 can be a digitally adjustable air source. It is connected to the test adapter 140 via an air tank 162, a pressure relief valve 163, and an overpressure valve 164. The air tank 162 smooths the pressure rise curve and prevents abrupt pressure changes. The pressure relief valve 163 automatically opens to relieve pressure when the pressure in the equipment or pipeline exceeds a set value. The overpressure valve 164 automatically opens to release pressure when the pressure exceeds a set value.

[0047] The temperature platform 151 can be an industrial digital thermostatic base plate, which is adjustable and allows setting a target temperature. The test adapter 140 connects to the temperature sensor 152, allowing the sensor to be mounted on the adapter to monitor its actual temperature. In case of abnormal overheating, the heating circuit can be cut off for protection. When the temperature and pressure meet the requirements, the oil filter will bypass the sensor, and the changes can be observed using a multimeter, indicating the test is complete.

[0048] As one possible implementation, the operation panel 120 also includes a digital display screen 124 and a heating switch 125. The digital display screen 124 is connected to the temperature sensor 152 and is used to display the actual temperature of the test adapter 140 collected by the temperature sensor. The digital display screen 124 is a high-precision digital display screen. The heating switch 125 is connected to the temperature platform 151 and is used to control the opening and closing of the temperature platform.

[0049] Meanwhile, the operation panel 120 also includes a gas source switch 127 and a pressure display screen 126. The gas source switch 127 is connected to the gas source 161 and is used to control the opening and closing of the gas source 161. The pressure display screen 126 is connected to the gas source 161 and is used to display the voltage output by the gas source 161.

[0050] Thermal grease 170 can also be placed between the temperature platform 151 and the test adapter 140. The thermal grease is connected to the test adapter to improve the thermal diffusivity, thereby shortening the heating rate of the oil filter under test that is about to bypass the sensor and improving the test efficiency.

[0051] As one possible implementation, the operation panel 120 is also equipped with a pressure relief indicator D1, a buzzer indicator D2, a continuity indicator D3, a power indicator D4, a fuse indicator D5, a signal interface 128, a power switch S1, and a power input interface 129.

[0052] The system includes: a pressure relief indicator D1 to indicate the pressure relief process between the air source and the test adapter; a buzzer indicator D2 to indicate that the oil filter bypass sensor under test is in a conductive state during testing; a continuity indicator D3 to indicate that the test circuit of the oil filter bypass sensor under test is conductive; a power indicator D4 to indicate whether the power is on; a fuse indicator D5 to indicate whether the test circuit of the oil filter bypass sensor under test is abnormal; a signal interface 128 connected to the signal terminal of the oil filter bypass sensor under test, and together with the test adapter 140, used to connect the oil filter bypass sensor tester to the oil filter bypass sensor under test; a power switch S1 connected to the power supply to control the power on and off; and a power input interface 129 for connecting an external power supply. These indicator lights assist in the testing of the oil filter bypass sensor, ensuring device safety and the accuracy of test data.

[0053] When testing the oil filter bypass sensor, first connect the oil filter bypass sensor to the test interface 121. Then, turn on the air source switch 127 and the heating switch 125. Set the temperature of the temperature platform 151 using the temperature control panel 122 to simulate the actual operating temperature of the oil filter bypass sensor. Adjust the pressure output of the air source 161 using the pressure adjustment knob 123 to simulate the actual operating pressure of the oil filter bypass sensor. When the temperature and pressure meet the requirements, the oil filter bypass sensor will conduct, and the buzzer indicator D2 will produce an audible and visual indication. The multi-channel output recorder monitors the temperature and pressure of the oil filter bypass sensor in real time, generating a change curve to prevent sudden parameter changes from damaging the oil filter bypass sensor.

[0054] During the test, the temperature sensor 152 collects the temperature of the test adapter 140 in real time and displays it on the digital display screen 124. The temperature control sensor 152 uses a thermocouple resistor and automatically cuts off the power when the temperature exceeds the limit to prevent the device from burning out.

[0055] If the pressure value displayed on the pressure display screen 126 changes abruptly during the test, the air tank 162, the pressure relief valve 163, and the overpressure valve 164 will be opened simultaneously to release a portion of the pressure through the pressure relief valve 163 and the overpressure valve 164, while the remaining pressure will be discharged into the air tank 162 to prevent overpressure.

[0056] The oil filter bypass sensor tester integrates various components required for testing oil filter bypass sensors into a single equipment box, eliminating the need for external heat and air sources. This facilitates maintenance and storage, and also meets the needs of emergency transport. Furthermore, it accurately simulates the actual operating temperature and environmental pressure of the oil filter bypass sensor, creating a constant temperature and pressure testing environment. This simplifies operation, ensures reliable performance, and effectively improves testing safety and accuracy.

Claims

1. An oil filter bypass sensor tester, comprising: The utility model relates to a kind of test instrument for lubricating oil filter bypass sensor, including: Box, which is provided with an operation panel on the top and has a power supply, a test adapter, a temperature unit and a pressure unit inside, wherein the operation panel is provided with a test interface, a temperature adjusting panel and a pressure adjusting knob, the temperature unit includes a temperature platform, and the pressure unit includes an air source; The temperature platform is arranged at the bottom of the box, and the test adapter is fixedly placed above the temperature platform and connected with the power supply and the temperature adjusting panel respectively; The air source is fixed at the bottom of the box and connected with the test adapter and the pressure adjusting knob respectively; The input port of the test adapter is installed in the test interface and connected with the sensing end of the lubricating oil filter bypass sensor to be tested through the test interface; The temperature adjusting panel is used to set the temperature of the temperature platform; The pressure adjusting knob is used to adjust the output pressure of the air source.

2. The bypass sensor tester of claim 1, wherein, The temperature unit further includes a temperature sensor, the sensing end of the temperature sensor is arranged on the test adapter, and the signal end of the temperature sensor is connected with the power supply to monitor the actual temperature of the test adapter and measure the real temperature of the lubricating oil filter bypass sensor to be tested.

3. The bypass sensor tester of claim 1, wherein, The pressure unit further includes an air tank, a pressure relief valve and an overpressure valve, the air tank is connected with the air source, the air tank is connected with the pressure relief valve, the pressure relief valve is connected with the overpressure valve, the overpressure valve is connected with the test adapter, and the air tank, the pressure relief valve and the overpressure valve are used together to adjust the pressure between the air source and the test adapter.

4. The bypass sensor tester of claim 1, wherein, Thermal silicone grease is arranged between the temperature platform and the test adapter.

5. The bypass sensor tester for an oil filter according to claim 2, wherein The operation panel further includes a digital display screen and a heating switch; The digital display screen is connected with the signal end of the temperature sensor and used to display the actual temperature of the test adapter collected by the temperature sensor; The heating switch is connected with the temperature platform and used to control the opening and closing of the temperature platform.

6. The bypass sensor tester of claim 3, wherein, The operation panel further includes an air source switch and a pressure display screen; The air source switch is connected with the air source and used to control the opening and closing of the air source; The pressure display screen is connected with the air source and used to display the voltage output by the air source.

7. The bypass sensor tester of claim 1, wherein, The operation panel further includes a pressure relief indicator, a buzzer indicator, a conduction indicator, a power indicator, a fuse indicator, a signal interface, a power switch and a power input interface; The pressure relief indicator is used to indicate the pressure relief process between the air source and the test adapter; The buzzer indicator is used to indicate that the lubricating oil filter bypass sensor to be tested is in a conduction state during the test process; The conduction indicator is used to indicate that the test circuit of the lubricating oil filter bypass sensor to be tested is in a conduction state; The power indicator is used to indicate whether the power is turned on; The fuse indicator is used to indicate whether the test circuit of the lubricating oil filter bypass sensor to be tested is abnormal; The signal interface is connected with the signal end of the lubricating oil filter bypass sensor to be tested and used together with the test adapter to connect the lubricating oil filter bypass sensor tester with the lubricating oil filter bypass sensor to be tested. The power switch is connected with the power supply and used for controlling the on and off of the power supply. The power input interface is used for external power supply.

8. The bypass sensor tester of claim 1, wherein, The temperature platform is an industrial digital constant temperature bottom plate.

9. The bypass sensor tester of claim 1, wherein, The air source is a digital adjustable air source.

10. The bypass sensor tester for an oil filter according to claim 2, wherein The temperature sensor is a temperature control sensor, which includes a thermocouple resistance, and is used for automatically cutting off power when the real temperature of the bypass sensor of the to-be-tested lubricating oil filter exceeds a preset threshold value.

Images