Engine air compressor testing device and testing method

Abstract

The application particularly relates to a detection device and method of an air compressor for an engine, which comprises a main frame, a driving assembly, a gas storage part, a detection assembly and a control assembly. The main frame is provided with a clamping part for fixing the air compressor. The driving assembly is used for driving the air compressor to rotate and providing lubricating oil for the air compressor. The gas storage part is communicated with the air compressor. The detection assembly comprises a first detection part, a second detection part and a third detection part. The first detection part is used for detecting the gas pressure in the gas storage part. The second detection part is used for timing. The third detection part is used for detecting the oil discharge amount at the exhaust port of the air compressor. The control assembly is used for starting the driving assembly and controlling the opening and closing of the first detection part and the second detection part. The detection device of the air compressor for the engine simulates the working state of the air compressor mounted on the engine, so as to perform performance test, air tightness test and oil discharge amount test on the air compressor.

Description

Technical Field

[0001] This invention relates to the field of air compressor manufacturing technology, and specifically to a testing device and method for an air compressor used in engines. Background Technology

[0002] An air compressor is short for an air compressor. An air compressor is a device used to compress gas. Air compressors are similar in structure to water pumps. Most air compressors are reciprocating piston type, rotary vane type or rotary screw type. Centrifugal compressors are used in very large applications. Air compressors can be divided into three categories according to their working principle: positive displacement type, dynamic type (speed type or turbine type) and thermal type compressors.

[0003] During the production and processing of air compressors, it is necessary to test various components of the air compressor. Existing air compressor testing equipment includes variable frequency motors, air tanks, buffer tanks, pressure sensors, differential pressure sensors, flow sensors, humidity sensors, and torque meters.

[0004] However, the aforementioned air compressor testing device can only be used for testing industrial power air compressors, and its testing function is limited, either only testing the air tightness or only testing the performance of the air compressor. Using this testing device cannot meet the testing requirements of engine-mounted vehicle air compressors, and the testing efficiency is low. Summary of the Invention

[0005] The purpose of this invention is to at least solve the problem that existing air compressor testing devices cannot meet the testing requirements of engine-mounted vehicle air compressors. This purpose is achieved through the following technical solution:

[0006] A first aspect of the present invention provides a testing device for an air compressor for an engine, comprising:

[0007] The main frame is equipped with clamping components for fixing the air compressor.

[0008] A drive assembly for driving the air compressor to rotate and providing lubricating oil to the air compressor;

[0009] An air storage device, which is connected to the air compressor;

[0010] The detection component includes a first detection element, a second detection element, and a third detection element. The first detection element is used to detect the air pressure in the air storage component, the second detection element is used for timing, and the third detection element is used to detect the oil output at the exhaust port of the air compressor.

[0011] A control component is provided for activating the drive component and controlling the opening and closing of the first and second detection elements.

[0012] The testing device for an engine air compressor described in this invention uses clamping components mounted on a main frame to fix the air compressor, and includes a control component to activate the drive component to rotate the air compressor and provide lubricating oil to ensure lubrication. This simulates the working state of an air compressor mounted on an engine. Simultaneously, through the included air storage component and testing components, the device can effectively perform performance tests, airtightness tests, and oil discharge tests on the air compressor, thereby solving the problem that existing air compressor testing devices cannot meet the testing requirements of engine-mounted vehicle air compressors.

[0013] In addition, the testing device for an air compressor for an engine according to the present invention may also have the following additional technical features:

[0014] In some embodiments of the present invention, the driving component includes:

[0015] A driving component is mounted on the main frame and is connected to the central shaft of the air compressor via a transmission mechanism.

[0016] An oil supply component is connected to the air compressor and is used to supply lubricating oil to the air compressor;

[0017] A water supply component is connected to the air compressor and is used to supply coolant to the air compressor.

[0018] In some embodiments of the present invention, the transmission mechanism includes:

[0019] A drive shaft is rotatably mounted on the main frame, and the first end of the drive shaft is connected to the drive component via a conveyor belt;

[0020] A coupling is disposed at the second end of the drive shaft and is connected to the central shaft of the air compressor for transmission.

[0021] In some embodiments of the present invention, a protective cover is provided on the outer side of the coupling.

[0022] In some embodiments of the present invention, the control component includes:

[0023] A controller having control buttons for inputting control commands;

[0024] The display is electrically connected to the controller and is used to display the test progress, operating status information and parameter information of the air compressor.

[0025] In some embodiments of the present invention, the main frame is provided with at least two clamping members, and each clamping member is correspondingly provided with one of the driving members.

[0026] In some embodiments of the invention, the clamping member is detachably mounted on the main frame.

[0027] Another aspect of the present invention provides a testing method for an engine air compressor, implemented using the testing apparatus for an engine air compressor according to the present invention, the testing method comprising:

[0028] The detection time when the air compressor rotates at its rated speed and the air pressure in the air storage device reaches the preset pressure is obtained;

[0029] If the detection time meets the first preset time, the performance test of the air compressor is determined to be qualified.

[0030] Based on the performance test results of the air compressor, the air compressor is controlled to rotate at the rated speed, and the rotation of the air compressor is stopped when the air pressure of the air storage device exceeds the preset pressure.

[0031] After the air compressor stops rotating, the pressure drop value of the air storage device within a second preset time period is obtained;

[0032] The air compressor is deemed to have passed the air tightness test if the pressure drop value is less than the second preset value.

[0033] If the air compressor passes the air tightness test, start the air compressor and make it rotate at the rated speed.

[0034] After the air compressor is started, the amount of oil discharged by the air compressor after a third preset operating time is obtained;

[0035] Based on the fact that the oil discharge volume meets the standard template, the oil discharge volume test of the air compressor is deemed qualified.

[0036] In some embodiments of the present invention, the time before the air pressure in the air storage device reaches a preset pressure when the air compressor is rotating at its rated speed includes:

[0037] The drive assembly and the first detection element are activated when the gas storage device is in the venting state.

[0038] When the running time of the drive component is the fourth preset time, the air compressor is started and the air compressor is controlled to operate under preset conditions.

[0039] After the air compressor operates under the preset conditions, the air storage device is controlled to be in an air storage state.

[0040] In some embodiments of the present invention, before activating the drive assembly and the first detection element, based on the gas storage device being in an exhaust state, the following steps are included:

[0041] Based on the model of the air compressor, the preset conditions are set, and the first preset time and the standard sample are determined. Attached Figure Description

[0042] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0043] Figure 1 This is a schematic diagram of the detection device for an air compressor for an engine, as shown in an embodiment of the present invention, from a certain perspective.

[0044] Figure 2 This is a schematic diagram of the detection device for an air compressor for an engine, as shown in an embodiment of the present invention, from another perspective.

[0045] Figure 3 This is a schematic diagram of the transmission mechanism shown in the embodiment of the present invention;

[0046] Figure 4 This is a schematic flowchart of the testing method for an air compressor for an engine, as shown in an embodiment of the present invention.

[0047] Figure 5 This is a partial flowchart illustrating the testing method for an air compressor for an engine according to an embodiment of the present invention.

[0048] Figure 6 This is a logical schematic diagram of the testing method for an air compressor for an engine as shown in an embodiment of the present invention.

[0049] The markings in the attached diagram are as follows:

[0050] 1. Main frame;

[0051] 2. Clamping components;

[0052] 3. Air compressor;

[0053] 4. Protective cover;

[0054] 5. Control buttons;

[0055] 6. Monitor;

[0056] 7. Subframe;

[0057] 8. Gas storage components;

[0058] 91. First support; 92. Second support;

[0059] 10. Hydraulic valves;

[0060] 11. Hydraulic station;

[0061] 12. Hydraulic pump;

[0062] 13. Water pump;

[0063] 14. Water tank;

[0064] 15. Alarm light;

[0065] 16. Electrical control cabinet;

[0066] 17. Return oil pipe;

[0067] 18. Vent valve;

[0068] 19. Pressure sensor;

[0069] 20. Oil inlet pipe;

[0070] 21. Water inlet pipe;

[0071] 22. Belt;

[0072] 23. Transmission mechanism; 231. Coupling; 232. Drive shaft;

[0073] 24. Return water pipe;

[0074] 25. Vent pipe;

[0075] 26. Drive motor. Detailed Implementation

[0076] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0077] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0078] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0079] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0080] Example 1

[0081] like Figure 1 As shown, according to an embodiment of the present invention, a testing device for an air compressor for an engine is proposed, which specifically includes a main frame 1, a drive assembly, an air storage component 8, a testing assembly, and a control assembly.

[0082] The main frame 1 is equipped with a clamping component 2 for fixing the air compressor 3. The drive assembly drives the air compressor 3 to rotate and provides lubricating oil to it. An air storage unit 8 is connected to the air compressor 3. The detection assembly includes a first detection element, a second detection element, and a third detection element. The first detection element detects the air pressure in the air storage unit 8, the second detection element is used for timing, and the third detection element detects the oil output at the exhaust port of the air compressor 3. The control assembly starts the drive assembly and controls the opening and closing of the first and second detection elements.

[0083] The testing device for an engine air compressor of the present invention uses a clamping component 2 to fix an air compressor 3 on a main frame 1, and a control component to start the drive component to make the air compressor 3 rotate, and provides lubricating oil to the air compressor 3 to ensure its lubrication, thereby simulating the working state of the air compressor 3 mounted on an engine. At the same time, through the air storage component 8 and the testing component, the air compressor 3 can be effectively tested for performance, air tightness and oil discharge, thereby solving the problem that the existing air compressor 3 testing device cannot meet the testing requirements of engine vehicle air compressor 3.

[0084] Specifically, the testing device for the engine air compressor includes a main frame 1, a secondary frame 7, and an electrical control cabinet 16. The main frame 1 is equipped with a clamping component 2 and a drive component from the drive assembly. In this embodiment, the drive component is a drive motor 26. Figure 1 As shown, the number of clamping members 2 is at least two, that is, at least two clamping members 2 are provided on the main frame 1, and each clamping member 2 is correspondingly provided with a driving member. By setting multiple clamping members 2 in conjunction with their corresponding driving members, and in conjunction with the above-mentioned control components, multiple air compressors 3 can be detected simultaneously, and different speeds can be detected, which helps to improve the detection efficiency of air compressors 3. In this embodiment, the number of clamping members 2 is two, and they are spaced apart on the upper surface of the top plate of the main frame 1. Correspondingly, two drive motors 26 are provided on the main frame 1, and each drive motor 26 is used to drive one air compressor 3.

[0085] At this time, the clamping member 2 is detachably mounted on the main frame 1. In this embodiment, the clamping member 2 is a fixture, and the fixture is a replaceable structure, that is, the clamping member 2 is a detachable fixture. This configuration allows the main frame 1 to fix different types of air compressors 3, and in conjunction with the control and detection components described below, it is possible to detect different types of air compressors 3. As a preferred implementation, the fixture is provided with a positioning pin and a pressure plate. Fixing the air compressor 3 by the cooperation of the positioning pin and the pressure plate helps to reduce the difficulty of fixing the air compressor 3 and improve the efficiency of disassembly and assembly of the air compressor 3.

[0086] like Figure 1 and Figure 2As shown, a transmission mechanism 23 is also provided on the main frame 1. The aforementioned driving component is connected to the central shaft of the air compressor 3 via the transmission mechanism 23, thereby driving the air compressor 3 to rotate. Specifically, the transmission mechanism 23 includes a transmission shaft 232 and a coupling 231. The transmission shaft 232 is rotatably mounted on the main frame 1, and its first end is connected to the driving component via a conveyor belt. In this embodiment, the transmission shaft 232 is fixed to the main frame 1 by bearings, and the conveyor belt is a belt 22. The first end of the transmission shaft 232 is connected to the driving component via the belt 22, and the second end of the transmission shaft 232 is provided with a coupling 231. The transmission shaft 232 is connected to the central shaft of the air compressor 3 via the coupling 231. When the air compressor 3 is fixed on the fixture, the drive motor 26 drives the transmission shaft 232 of the transmission mechanism 23 to rotate via the belt 22. At this time, the torque of the transmission shaft 232 drives the central shaft of the air compressor 3 to rotate via the coupling 231, thereby performing air compressor 3 testing. By incorporating coupling 231, torsional vibration can be reduced, thereby contributing to improved safety and accuracy of the testing device.

[0087] In addition, a protective cover 4 is provided on the main frame 1. The protective cover 4 is placed on the outside of the coupling 231. By providing the protective cover 4 to protect the coupling 231, the influence of the external environment on the transmission mechanism 23 is reduced, thereby ensuring the accuracy of driving the air compressor 3.

[0088] In the specific embodiment described above, a control component is also provided on the main frame 1, which includes a controller and a display 6. The controller can be used to activate the drive component and control the opening and closing of the first and second detection elements. By providing the controller, the detection device can achieve automated detection. Specifically, the controller has a control button 5 for inputting control commands. In this embodiment, a first bracket 91 is provided on the main frame 1, and the controller and the display 6 are mounted on the first bracket 91. By providing the control button 5 on the controller, the operator can input control commands to regulate the entire testing process. This also helps the operator to make adaptive adjustments according to different models of the air compressor 3, such as adjusting the speed of the drive motor 26 and the detection time, thereby improving the applicability of the detection device and ensuring its accuracy.

[0089] At this time, the aforementioned display 6 is electrically connected to the controller, and the display 6 can be used to display the testing progress, operating condition information, and parameter information of the air compressor 3. In this embodiment, the display 6 is located above the control button 5 for easy viewing and use by the operator. Simultaneously, the display 6 is electrically connected to the controller, the first detection element, and the second detection element. By setting up the display 6 to cooperate with the use of the detection components, it helps to monitor the testing of the air compressor 3, improve the adjustment of the operating condition of the air compressor 3, and detect various parameters, thereby further improving the scope and accuracy of the detection. Furthermore, the display 6 can also be used to display information such as the detection time and the number of detections, thereby improving the effectiveness of the detection device.

[0090] It should be noted that the aforementioned control components also include other electrical components, such as circuit breakers, relays, switches, and power supplies, to complete the electrical control system of the detection device and thus improve its performance. In this embodiment, the circuit breakers, relays, switches, and power supplies are all housed in the electrical control cabinet 16, which is spaced apart from the main frame 1. Of course, the electrical control cabinet 16 can also be mounted on the main frame 1 or the auxiliary frame 7; however, placing the electrical control cabinet 16 separately facilitates the standardized arrangement of the wiring harness, thereby improving the safety of the detection device.

[0091] Still Figure 1 As shown, the drive assembly includes the aforementioned drive component, oil supply component, and water supply component. The oil supply component is connected to the air compressor 3 and is used to supply lubricating oil to the air compressor 3. Specifically, the oil supply component includes a hydraulic station 11, a hydraulic pump 12, a hydraulic valve 10, an oil inlet pipe 20, and an oil return pipe 17. The hydraulic station 11 is mounted on the subframe 7, and the hydraulic pump 12 and hydraulic valve 10 are mounted on the hydraulic station 11. The output end of the hydraulic valve 10 is connected to the air compressor 3 via the oil inlet pipe 20, and the input end of the hydraulic valve 10 is connected to the air compressor 3 via the oil return pipe 17. The hydraulic station 11 stores lubricating oil, and the lubricating oil is drawn from the hydraulic station 11 to the hydraulic valve 10 by the hydraulic pump 12. At this time, the hydraulic valve 10 controls the lubrication of both air compressors 3. The lubricating oil is delivered to the air compressor 3 via the oil inlet pipe 20 for cooling and lubrication, and the lubricated oil is returned to the hydraulic station 11 via the oil return pipe 17.

[0092] At this time, the aforementioned water supply component is mounted on the subframe 7 and is connected to the air compressor 3, serving to supply coolant to the air compressor 3. Specifically, the water supply component includes a water tank 14, a water pump 13, an inlet pipe 21, and a return pipe 24. The water tank 14 is fixed to the subframe 7 and is used to store cooling water. Multiple water pumps 13 are mounted on the water tank 14. In this embodiment, two water pumps 13 are used, and each water pump 13 corresponds to one air compressor 3. The output end of the water pump 13 is connected to the air compressor 3 via the inlet pipe 21, and the air compressor 3 is connected to the water tank 14 via the return pipe 24. Cooling water in the water tank 14 is drawn out by the water pump 13, transported to the air compressor 3 via the inlet pipe 21, thereby cooling the air compressor 3. The cooling water is then transported back to the water tank 14 via the return pipe 24.

[0093] In this embodiment, the subframe 7 is also equipped with two air storage components 8, and each air storage component 8 is connected to an air compressor 3. Since the air compressor 3 is driven by an engine and compresses and stores air in an air storage tank for use as the air source power for car brakes or bus door opening, the air outlet in this application is an air storage tank, which is used to store the compressed air from the air compressor 3. Specifically, the subframe 7 is equipped with two second supports 92, and each second support 92 has an air storage component 8 fixed on it. The air compressor 3 is equipped with a first detection element to detect the pressure inside the air storage tank. A vent valve 18 is provided on one side of the air storage tank. When the pressure in the air storage tank exceeds the limit, the vent valve 18 is opened to release air for pressure relief protection, which helps improve the performance of the air storage component 8. At the same time, a drain port is provided at the bottom of the air storage tank to drain condensate or dirt accumulated in the tank over a long period. In addition, one end of the aforementioned air outlet pipe 25 is connected to the air storage tank, while the other end is connected to the air outlet of the air compressor 3.

[0094] In this embodiment, the aforementioned detection component includes a first detection element, a second detection element, and a third detection element. The first detection element is mounted on the air tank and is used to detect the air pressure within the tank. The second detection element is a timing device, which can be mounted on the controller or electrically connected to it. During performance testing, when the air compressor 3 operates at the engine's rated speed, the timing device records the time it takes for the air tank to reach the calibrated pressure. During airtightness testing, the timing device records five minutes after the air compressor 3 stops when the air tank exceeds the calibrated pressure. During oil discharge testing, when the air compressor 3 operates at the engine's rated speed, the timing device records the engine's operating time. The third detection element includes test strips and a standard template. The test strips are used to check the oil discharge from the air compressor 3's exhaust port, and the result is compared with the standard template to determine if the requirements are met.

[0095] In addition to the above, the testing device for the vehicle air compressor 3 also includes an alarm system. Specifically, the alarm system has an alarm device. In this embodiment, the alarm device is set as an alarm light 15, and the alarm light 15 is installed on the electrical control cabinet 16. When an abnormality occurs during the testing process, the alarm light 15 will sound an alarm in the form of photoelectric signal. Of course, the alarm device can also be set as a buzzer or other alarm device. As a preferred implementation, the above-mentioned alarm system is electrically connected to the controller and can display fault information on the display 6. This setting helps to further improve the effectiveness of the testing device.

[0096] The detection device in this embodiment can be used to detect whether a newly manufactured air compressor 3 for a vehicle meets the design requirements. By installing the air compressor 3 on a fixture and driving it to rotate through a drive motor 26 and a transmission mechanism 23, lubricating oil is supplied to the air compressor 3 through an oil supply component to ensure lubrication, and cooling water is supplied to the air compressor 3 through a water supply component to ensure cooling. This can simulate the working state of the air compressor 3 mounted on an engine. That is, on an engine, the air compressor 3 is driven by the engine to circulate various water and oil circuits. During this process, the detection device can regulate the operation of the drive components and detection components, thereby realizing the operation of the air compressor 3 on the engine and monitoring the operating parameters of the air compressor 3. This helps to ensure the feasibility of the detection device and the accuracy of its detection.

[0097] Example 2

[0098] This embodiment relates to a testing method for an air compressor 3 for an engine. This testing method is implemented based on the testing device for an air compressor for an engine described in Embodiment 1. Figure 3 As shown, the detection method specifically includes:

[0099] The detection time when the air pressure in the air storage device 8 reaches the preset pressure when the air compressor 3 rotates at the rated speed is obtained;

[0100] Based on the fact that the detection time meets the first preset time, the performance test of air compressor 3 is determined to be qualified.

[0101] Based on the performance test results of air compressor 3, control air compressor 3 to rotate at rated speed, and stop air compressor 3 when the air pressure in air storage 8 exceeds the preset pressure;

[0102] After the air compressor 3 stops rotating, the pressure drop value of the air compressor 3 within a second preset time period is obtained;

[0103] Based on the pressure drop value being less than the second preset value, the air tightness test of air compressor 3 is deemed qualified;

[0104] If the air compressor 3 passes the air tightness test, start the air compressor 3 and make it rotate at the rated speed.

[0105] After the air compressor 3 starts, obtain the oil discharge amount of the air compressor 3 after running for the third preset time;

[0106] Determine that the oil discharge amount test of the air compressor 3 is qualified according to that the oil discharge amount conforms to the standard sample.

[0107] Specifically, after the air compressor 3 finishes running-in, start the air compressor 3 and make the air compressor 3 rotate at the rated speed. At the same time, start timing and the detection time when the air pressure of the air storage component 8 reaches the preset pressure. Then judge whether the detection time meets the first preset time. Since the models of the air compressor 3 are different, the first preset time is set corresponding to the model of the air compressor 3. When the detection time meets the first preset time, it can be determined that the performance test of the air compressor 3 is qualified. Since the above air compressor 3 is applicable to the highest working speed required by the supporting vehicle engine. It can be understood that the engine has a maximum speed value that allows long-term operation. The engine drives the air compressor 3 to rotate through a transmission speed ratio, and the air compressor 3 operates at the speed transmitted through the speed ratio at this speed. Therefore, using the rated speed as the detection standard can more accurately detect the performance of the air compressor 3.

[0108] At this time, when the air storage tank exceeds the preset pressure, stop the operation of the air compressor 3, start recording time, and at the same time record the air pressure in the air storage tank. When the recorded time reaches the second preset time, record the air pressure of the air compressor 3 at this time. In this embodiment, the second preset time is five minutes. When the pressure drop value within five minutes is less than the calibrated value, the airtightness test of the air compressor 3 is qualified. When the pressure drop value within five minutes exceeds the calibrated value, the airtightness test of the air compressor 3 is unqualified.

[0109] Here, it should be noted that the above-mentioned preset pressure is a pressure limit value of the air storage tank, that is, the air storage tank is safe when the pressure is lower than this threshold value, but there may be a risk of explosion of the air storage device when the pressure in the tank exceeds this value. When the air storage tank reaches the threshold value, the air compressor 3 stops working. Due to structural reasons, air leakage will inevitably occur in the entire air circuit. Therefore, there is a standard value for the pressure drop within 5 minutes. When the detected pressure drop value is lower than this standard value, it can be considered that the air compressor 3 is normal. However, when the pressure drop value is higher than the standard value, it can be considered that the air compressor 3 may have poor internal sealing and leaks gas too fast.

[0110] After completing the airtightness test, start the air compressor 3 and make the air compressor 3 rotate at the rated speed. When the air compressor 3 runs for the third preset time, collect the oil discharged from the air compressor 3 through the third detection component to obtain the oil discharge amount within the specified time, and then judge whether the oil discharge amount conforms to the standard sample. If it conforms, it can be determined that the oil discharge amount test of the air compressor 3 is qualified. If it does not conform, it is determined that the oil discharge amount test of the air compressor 3 is unqualified.

[0111] During operation, air compressor 3 requires lubrication of its internal moving parts. This lubricating oil is carried out as oil vapor or tiny particles by the compressed airflow and discharged through the air compressor 3's exhaust port. Similarly, there is a standard value for this oil output under normal circumstances. Therefore, by measuring the oil output and comparing it with the standard value, it is possible to further determine whether the internal seals of air compressor 3 are up to standard, whether there is abnormal wear leading to excessive oil discharge, or whether there is oil passage blockage or insufficient lubrication. The aforementioned standard sample is obtained through big data statistics, and different air compressor 3 models have different standard samples.

[0112] like Figure 4 As shown, the detection time before the air pressure in the air storage unit 8 reaches the preset pressure when the air compressor 3 is rotating at its rated speed includes:

[0113] Based on the fact that the gas storage device 8 is in the venting state, the drive assembly and the first detection device are activated;

[0114] When the running time of the drive component is the fourth preset time, start the air compressor 3 and control the air compressor 3 to operate under preset conditions;

[0115] After the air compressor 3 operates under preset conditions, the air storage component 8 is controlled to be in the air storage state.

[0116] Specifically, before conducting the simulated test of air compressor 3, it is necessary to perform a break-in process. Specifically, air compressor 3 is installed, and the vent valve 18 of the air tank is opened. Then, hydraulic pump 12, water pump 13, and the first testing component are started. Hydraulic pump 12 begins oil lubrication, the vent valve 18 of the air tank is opened to release air, water pump 13 begins supplying cooling water to air compressor 3, and pressure sensor 19 detects the air pressure inside the air tank. At this time, all operating parameters are displayed on display 6. After the drive components and air compressor 3 have run for the fourth preset time, drive motor 26 is started to drive air compressor 3 to begin operation. At this time, according to the process specifications, it runs at speed n1 for b seconds, then at speed n2 for c seconds, and so on. After completion, vent valve 18 is closed, thus completing the break-in process of air compressor 3.

[0117] In this embodiment, the break-in process of the air compressor 3 requires it to operate under different conditions to ensure that subsequent testing and verification can proceed, guaranteeing that the performance parameters of the air compressor 3 meet design requirements, reliability requirements, and pass quality inspection. Specifically, the air compressor 3 can be controlled to run at 600 r / min for 10 seconds, and then at 1000 r / min for 15 seconds, etc. Since the operating conditions differ for different models of air compressor 3, the specific data mentioned above will not be detailed further.

[0118] In some embodiments of the present invention, before starting the drive assembly and the first detection component according to the exhaust state of the gas storage component 8, it includes:

[0119] Set preset conditions according to the model of the air compressor 3, and determine the first preset time and the standard sample.

[0120] Specifically, when starting the running-in of the air compressor 3, it is necessary to first adjust the control parameters to ensure the accuracy of the detection. In this embodiment, after determining the model of the air compressor 3, the operator needs to adjust the first preset time and the standard sample of the oil discharge amount of the air compressor 3 according to data such as the rated speed of the air compressor 3. And judge the performance of the air compressor 3 with the adjusted first preset time, and judge whether the oil discharge amount of the air compressor 3 meets the standard with the adjusted standard sample.

[0121] In actual use, as Figure 5 shown, first, determine the model of the air compressor 3, determine the first detection time and the standard sample according to the model of the air compressor 3, and adjust the first detection time and the preset conditions through the control button 5. Then install the air compressor 3 to be detected, start the hydraulic pump 12 through the control button 5 to supply oil to the air compressor 3; open the air release valve 18 to keep the air storage tank in the exhaust state; start the water pump 13 to provide cooling water for the air compressor 3; start the first detection component to detect the air pressure of the air storage tank; and at this time, various operating parameters are displayed on the display 6. Then after running for the fourth preset time, start the drive motor 26.

[0122] After the drive motor 26 is started, the drive motor 26 starts to run under the preset conditions, and at this time, the air compressor 3 runs at the speed of n1 for b seconds, then runs at the speed of n2 for c seconds,..., and then after the preset conditions are executed, close the air release valve 18 of the air storage tank to make the air storage tank in the air storage state. And at this time, the running-in of the air compressor 3 is completed.

[0123] Then, start the test. First, the controller controls the air compressor 3 to perform a performance test at the speed corresponding to the rated speed of the engine, and at this time, record the detection time when the air storage tank reaches the preset pressure, and stop the rotation of the air compressor 3 when the air storage tank reaches the preset pressure. By comparing whether the detection time meets the requirements of the first preset time, if it meets, the performance test of the air compressor 3 is qualified, if not, the performance test of the air compressor 3 is unqualified, and the test is stopped. When the performance test of the air compressor 3 is qualified, the controller controls the air compressor 3 to continue to rotate at the rated speed, and when the air pressure in the air storage tank exceeds the preset pressure, control the air compressor 3 to stop rotating, and then record the pressure drop value of the air storage tank within the second preset time, that is, the pressure drop value within five minutes. When the pressure drop value is less than the standard value, it can be determined that the air compressor 3 has qualified airtightness, and when the pressure drop value is greater than or equal to the standard value, it can be determined that the air compressor 3 has unqualified airtightness.

[0124] After the air compressor 3 completes the sealing test, the controller starts the drive motor 26 and makes the air compressor 3 run at its rated speed. After the air compressor 3 has been running for a third preset time, the oil discharge volume of the air compressor 3 is obtained at this time, and then compared with the standard sample. If the oil discharge volume of the air compressor 3 meets the requirements of the standard sample, the oil discharge volume test of the air compressor 3 is qualified; if it does not meet the requirements, it means that the oil discharge volume test of the air compressor 3 has failed.

[0125] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A testing device for an air compressor used in an engine, characterized in that, include: The main frame is equipped with clamping components for fixing the air compressor. A drive assembly for driving the air compressor to rotate and providing lubricating oil to the air compressor; An air storage device, which is connected to the air compressor; The detection component includes a first detection element, a second detection element, and a third detection element. The first detection element is used to detect the air pressure in the air storage component. The second detection element is used for timing. The third detection element includes test paper and a standard sample. The third detection element is used to detect the oil output at the exhaust port of the air compressor. A control component, which is used to start the drive component and control the opening and closing of the first detection element and the second detection element; During performance testing, when the air compressor is running at its rated speed, the second detection element is used to record the detection time when the air pressure of the air storage device reaches the preset pressure; during air tightness testing, the second detection element is used to record the time after the air compressor stops when the air pressure of the air storage device exceeds the preset pressure. During the oil discharge test, when the air compressor is running at its rated speed, the second testing element is used to record the operating time of the air compressor. The driving component includes: A driving component is mounted on the main frame and is connected to the central shaft of the air compressor via a transmission mechanism. An oil supply component is connected to the air compressor and is used to supply lubricating oil to the air compressor; A water supply unit, which is connected to the air compressor and is used to supply coolant to the air compressor; The main frame is provided with two clamping members, and each clamping member is provided with a corresponding driving member. There are two air storage units, and each air storage unit is used to communicate with one of the air compressors.

2. The testing device for an engine air compressor according to claim 1, characterized in that, The transmission mechanism includes: A drive shaft is rotatably mounted on the main frame, and the first end of the drive shaft is connected to the drive component via a conveyor belt; A coupling is disposed at the second end of the drive shaft and is connected to the central shaft of the air compressor for transmission.

3. The testing device for an engine air compressor according to claim 2, characterized in that, The coupling is provided with a protective cover on its outer side.

4. The testing device for an engine air compressor according to claim 1, characterized in that, The control component includes: A controller for controlling the drive assembly, the first detection element, and the second detection element, the controller having control buttons for inputting control commands; The display is electrically connected to the controller and is used to display the test progress, operating status information and parameter information of the air compressor.

5. The testing device for an engine air compressor according to any one of claims 1 to 4, characterized in that, The clamping element is detachably mounted on the main frame.

6. A method for testing an air compressor for an engine, characterized in that, The testing method is implemented using a testing device for an engine air compressor according to any one of claims 1 to 5, and includes: The detection time when the air compressor rotates at its rated speed and the air pressure in the air storage device reaches the preset pressure is obtained; If the detection time meets the first preset time, the performance test of the air compressor is determined to be qualified. Based on the performance test results of the air compressor, the air compressor is controlled to rotate at the rated speed, and the rotation of the air compressor is stopped when the air pressure of the air storage device exceeds the preset pressure. After the air compressor stops rotating, the pressure drop value of the air storage device within a second preset time period is obtained; The air compressor is deemed to have passed the air tightness test if the pressure drop value is less than the second preset value. If the air compressor passes the air tightness test, start the air compressor and make it rotate at the rated speed. After the air compressor is started, the amount of oil discharged by the air compressor after a third preset operating time is obtained; Based on the fact that the oil discharge volume meets the standard template, the oil discharge volume test of the air compressor is deemed qualified.

7. The testing method for an engine air compressor according to claim 6, characterized in that, Before the detection time for obtaining the air pressure in the air storage device to reach the preset pressure when the air compressor is rotating at its rated speed, the following includes: The drive assembly and the first detection element are activated when the gas storage device is in the venting state. When the running time of the drive component is the fourth preset time, the air compressor is started and the air compressor is controlled to operate under preset conditions. After the air compressor operates under the preset conditions, the air storage device is controlled to be in an air storage state.

8. The testing method for an engine air compressor according to claim 7, characterized in that, Before activating the drive assembly and the first detection element, assuming the gas storage device is in an exhaust state, the following steps are included: Based on the model of the air compressor, determine the preset conditions, the first preset time, and the standard sample.

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