Pot lid pressure release valve and vacuum valve opening threshold intelligent detection equipment

Abstract

The invention discloses intelligent detection equipment for opening threshold values of a pressure release valve and a vacuum valve of a kettle cover. The intelligent detection equipment comprises a rack, a plurality of test mounting holes, a human-computer interface and a test system, the test mounting hole is formed in the rack and is used for mounting a kettle cover to be detected; the test system is electrically connected with the test mounting holes and the human-computer interface, and can perform positive pressure and negative pressure integrated test on the kettle covers on the test mounting holes, accurately measure the opening threshold value of the pressure release valve and the opening threshold value of the vacuum valve, send test data to the human-computer interface, and synchronously detect the kettle covers on the plurality of test mounting holes at the same time; the intelligent detection equipment for the opening threshold values of the pressure release valve and the vacuum valve of the kettle cover is high in intelligent degree, can accurately detect the opening threshold value of the switch valve, avoids misjudgment caused by manual detection, can detect a plurality of products at the same time, greatly reduces manual labor, and is suitable for popularization and use.

Description

Technical Field

[0001] This invention relates to the field of airtightness testing equipment, and in particular to an intelligent testing device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve. Background Technology

[0002] The coolant reservoir cap is an important component of the car's cooling system. Because the liquid it carries passes through parts of the car that need to be heated, the pressure inside the coolant reservoir increases, creating negative pressure and affecting airtightness.

[0003] The current traditional testing method involves manual testing using an air compressor and vacuum pump. Workers set positive pressure test values, then ventilate the product to confirm whether the pressure relief valve is open. After the positive pressure test is completed, a negative pressure test value is set to confirm whether the vacuum valve is open. The low efficiency of this manual testing and the susceptibility to misjudgment due to manual confirmation is a significant problem. Furthermore, the specific threshold values ​​cannot be measured accurately, resulting in unsatisfactory measurement results. Summary of the Invention

[0004] The purpose of this invention is to solve the above problems by providing an intelligent detection device for the opening threshold of pressure relief valves and vacuum valves with a high degree of intelligence, which can accurately measure the opening threshold of the valve, eliminate misjudgments caused by manual detection, and can detect multiple products at the same time, greatly reducing manual labor.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: an intelligent detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve, comprising a frame, multiple test mounting holes, a human-machine interface, and a testing system; the test mounting holes are set on the frame for mounting the kettle lid to be tested; the testing system is electrically connected to the test mounting holes and the human-machine interface respectively, and can perform integrated positive and negative pressure tests on the kettle lid on the test mounting holes, accurately measure the opening threshold of the pressure relief valve and the opening threshold of the vacuum valve, and send the test data to the human-machine interface, while simultaneously detecting the kettle lids on multiple test mounting holes.

[0006] Preferably, the testing system includes a pressure sensor, a flow sensor, a pneumatic control module, and a data processing module; the pressure sensor and the flow sensor are respectively connected to the test mounting hole and are used to collect pressure data and flow data in the test chamber; the pneumatic control module is used to control the positive / negative pressure supply in the test chamber; the data processing module is electrically connected to the pressure sensor, the flow sensor, and the pneumatic control module, and can calculate the opening threshold based on the collected pressure data and flow data.

[0007] Preferably, the gas path control module includes a positive pressure gas path, a negative pressure gas path, and a switching valve; the positive pressure gas path is used to provide a positive pressure test gas source, and the negative pressure gas path is used to provide a negative pressure test gas source; the switching valve is connected to the positive pressure gas path, the negative pressure gas path, and the test mounting hole respectively, and can switch the connection state between the positive pressure gas path or the negative pressure gas path and the test mounting hole.

[0008] Preferably, the number of pressure sensors and flow sensors is consistent with the number of test mounting holes, with each test mounting hole corresponding to at least one pressure sensor and one flow sensor.

[0009] Preferably, the human-machine interface can display the valve opening pressure and vacuum pressure corresponding to each test mounting hole, receive test parameter setting instructions input by the user, and display alarm information when the test exceeds the tolerance.

[0010] Preferably, the testing system further includes a data storage module, which is electrically connected to the data processing module and can store test data corresponding to each test mounting hole, including valve opening pressure, test time, and judgment result.

[0011] Preferably, it also includes multiple indicator lights, with one indicator light corresponding to each test mounting hole; when the test is qualified, the corresponding indicator light displays green; when the test is unqualified, the corresponding indicator light displays red.

[0012] Preferably, the gas path control module further includes a gas storage tank and multiple regulating valves, including a regulating valve 1 for regulating the maximum vacuum degree of the vacuum valve, a regulating valve 2 for regulating the vacuum flow rate, and a regulating valve 3 for regulating the gas flow rate during positive pressure measurement; the gas storage tank is connected to the positive pressure gas path, the negative pressure gas path, and the regulating valves respectively.

[0013] Preferably, it also includes an electrical system, which includes a 24V power supply and a USB-485 module; the 24V power supply powers the pressure sensor, flow sensor, and data processing module; the pressure sensor and flow sensor communicate with the data processing module through the USB-485 module.

[0014] Preferably, the data processing module can automatically determine whether the opening threshold obtained from the test is qualified according to the preset threshold range. When the opening threshold exceeds the preset range, it controls the human-machine interface and / or indicator lights to issue an alarm signal.

[0015] This invention discloses an intelligent detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve, comprising a frame, multiple test mounting holes, a human-machine interface, and a testing system. The test mounting holes are located on the frame for mounting kettle lids to be tested. The testing system is electrically connected to the test mounting holes and the human-machine interface, enabling integrated positive and negative pressure testing of the kettle lids at the test mounting holes. It accurately measures the opening threshold of the pressure relief valve and the vacuum valve, and sends the test data to the human-machine interface. Simultaneously, it can detect kettle lids at multiple test mounting holes. Compared with existing technologies, this intelligent detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve has a high degree of intelligence, accurately measures the opening threshold of the valves, eliminates misjudgments caused by manual testing, and can simultaneously test multiple products, greatly reducing manual labor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the entire machine of the intelligent detection device for the opening threshold of the kettle lid pressure relief valve and vacuum valve of the present invention.

[0017] Figure 2 This is a schematic diagram of the operating status of an intelligent detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve according to the present invention.

[0018] Figure 3 This is a schematic diagram illustrating the principle of an intelligent detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve, based on the present invention. Figure 1 .

[0019] Figure 4 This is a schematic diagram illustrating the principle of an intelligent detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve, based on the present invention. Figure 2 .

[0020] Figure 5 This is a schematic diagram illustrating the principle of an intelligent detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve, based on the present invention. Figure 3 .

[0021] Figure 6 This is a gas path diagram of the testing system in an intelligent detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve according to the present invention.

[0022] Figure 7 This is a schematic diagram of the electrical system in the intelligent detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve according to the present invention.

[0023] Figure 8 This is a flowchart illustrating the operation of an intelligent detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve according to the present invention.

[0024] Figure 9 The test data diagram for sample 1 is shown.

[0025] Figure 10The test data diagram for sample 2 is shown. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0027] Please refer to Figure 1-5 A smart detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve includes a frame, multiple test mounting holes, a human-machine interface, and a testing system. The test mounting holes are set on the frame for mounting the kettle lids to be tested. The testing system is electrically connected to the test mounting holes and the human-machine interface, and can perform integrated positive and negative pressure tests on the kettle lids on the test mounting holes, accurately measure the opening threshold of the pressure relief valve and the opening threshold of the vacuum valve, and send the test data to the human-machine interface. It can also perform synchronous detection on kettle lids on multiple test mounting holes.

[0028] The rack also includes multiple indicator lights, with one indicator light corresponding to each test mounting hole; when the test is passed, the corresponding indicator light displays green; when the test fails, the corresponding indicator light displays red.

[0029] Figure 3 In the diagram: K1 is the stop valve for station 1; K2 is the three-way valve for station 1; K3 is the stop valve for station 2; K4 is the three-way valve for station 2; K5 is the stop valve for station 3; K6 is the three-way valve for station 3; K7 is the stop valve for station 4; K8 is the three-way valve for station 4; K9 is the stop valve for station 5; K10 is the three-way valve for station 5; K11 is the stop valve for station 6; K12 is the three-way valve for station 6; K13 is the stop valve for station 7; K14 is the three-way valve for station 7; K15 is the stop valve for station 8; K16 is the three-way valve for station 8.

[0030] Please refer to Figure 6 In this invention, the testing system includes a pressure sensor, a flow sensor, a pneumatic control module, and a data processing module. The pressure sensor and flow sensor are respectively connected to the test mounting hole and are used to collect pressure data and flow data within the test chamber. The pneumatic control module is used to control the positive / negative pressure supply within the test chamber. The data processing module is electrically connected to the pressure sensor, flow sensor, and pneumatic control module, and can calculate the opening threshold based on the collected pressure data and flow data.

[0031] The gas path control module includes a positive pressure gas path, a negative pressure gas path, and a switching valve; the positive pressure gas path is used to provide a positive pressure test gas source, and the negative pressure gas path is used to provide a negative pressure test gas source; the switching valve is connected to the positive pressure gas path, the negative pressure gas path, and the test mounting hole respectively, and can switch the connection state between the positive pressure gas path or the negative pressure gas path and the test mounting hole.

[0032] It can be understood that the number of pressure sensors and flow sensors is consistent with the number of test mounting holes. Each test mounting hole is equipped with at least one pressure sensor and one flow sensor. The human-machine interface can display the valve opening pressure and vacuum pressure corresponding to each test mounting hole, receive test parameter setting instructions input by the user, and display alarm information when the test exceeds the tolerance.

[0033] Furthermore, the testing system also includes a data storage module, which is electrically connected to the data processing module and can store test data corresponding to each test mounting hole, including valve opening pressure, test time, and judgment result; the gas path control module also includes a gas storage tank and multiple regulating valves, including regulating valve 1 for regulating the maximum vacuum degree of the vacuum valve, regulating valve 2 for regulating the vacuum flow rate, and regulating valve 3 for regulating the gas flow rate during positive pressure measurement; the gas storage tank is connected to the positive pressure gas path, the negative pressure gas path, and the regulating valves respectively.

[0034] Please refer to Figure 7 It also includes an electrical system, which includes a 24V power supply and a USB-485 module; the 24V power supply powers the pressure sensor, flow sensor, and data processing module; the pressure sensor and flow sensor communicate with the data processing module through the USB-485 module; the data processing module can automatically determine whether the tested opening threshold is qualified according to a preset threshold range; when the opening threshold exceeds the preset range, it controls the human-machine interface and / or indicator lights to issue an alarm signal.

[0035] The operating procedure of the intelligent detection device for the opening threshold of the pressure relief valve and vacuum valve of the kettle lid is as follows: Figure 8 As shown, the first step is to design the action: by measuring the negative pressure first and then the positive pressure, the test cycle can be automatically started without having to press the start button again; Press the start button at the workstation during the first test. When the test ends, replace the test piece within the set time to automatically start a new test cycle. When the system loses power, the switching valve is designed to be in the negative pressure test position, and the shut-off valve can cut off the air supply to the vacuum valve when the power is off, so as to achieve no leakage of air pressure in the system when there is an unexpected power failure. In addition, it also has low power consumption in standby mode, minimizes the heating of the solenoid valve, and extends the service life of the solenoid valve. In addition, the software uses a database to store test data, which can record test data for each workstation, and can be queried and saved as a data table for analysis.

[0036] Based on measured data (such as) Figure 9-10 As can be seen, the pressure value corresponding to the inflection point of the curve at a flow rate of 0.5 liters / minute is the valve opening pressure value.

[0037] In actual production, precise control of regulating valves 2 and 3 is sufficient. Each valve is individually adjusted to ensure consistent values. It can be upgraded to an automatic valve for dynamic flow adjustment in the future.

[0038] In addition, indicator lights were added to show the test status during production. For each workstation, green indicates a pass and red indicates a fail.

[0039] The host computer displays the test results synchronously: green for qualified and red for unqualified.

[0040] When using this device, first install the lid to be tested onto the test mounting hole. After pressing the test start switch, the device automatically begins testing: the switching valve in the gas path control module switches the connection status between the positive or negative pressure gas path and the test mounting hole according to the test requirements. The positive or negative pressure gas path provides a stable test gas source through the gas tank and regulating valves. Regulating valve 1 adjusts the maximum vacuum level of the vacuum valve, regulating valve 2 adjusts the vacuum flow rate, and regulating valve 3 adjusts the gas flow rate during positive pressure measurement. Pressure and flow sensors collect pressure and flow data in the test chamber in real time and transmit the data to the data processing module via a USB-485 module. A 24V power supply provides stable power to all components. Based on the collected data and the pressure value corresponding to the inflection point of the flow rate of 0.5 liters / minute, the data processing module calculates the opening threshold of the pressure relief valve and the vacuum valve.

[0041] The human-machine interface (HMI) displays real-time data such as valve opening pressure and vacuum pressure for each test mounting hole. The data storage module synchronously stores test data, including valve opening pressure, test time, and judgment results. When the test is qualified, the green indicator light at the corresponding station illuminates; when the test fails, the red indicator light illuminates, and the HMI displays an alarm message indicating that the threshold has exceeded the tolerance.

[0042] In addition, users can input test parameter setting instructions through the human-machine interface, and the data processing module will automatically determine whether the threshold is qualified according to the preset threshold range. The whole process does not require manual intervention, realizing intelligent, efficient and accurate detection.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A smart detection device for the opening threshold of a kettle lid pressure relief valve and a vacuum valve, characterized in that, The device includes a frame, multiple test mounting holes, a human-machine interface (HMI), and a testing system. The test mounting holes are located on the frame and are used to mount the kettle lids to be tested. The testing system is electrically connected to the test mounting holes and the HMI, and can perform integrated positive and negative pressure tests on the kettle lids on the test mounting holes, accurately measure the opening threshold of the pressure relief valve and the opening threshold of the vacuum valve, and send the test data to the HMI. It can also perform simultaneous testing on kettle lids on multiple test mounting holes.

2. The intelligent detection device for the opening threshold of the pressure relief valve and vacuum valve of the kettle lid according to claim 1, characterized in that, The testing system includes a pressure sensor, a flow sensor, a pneumatic control module, and a data processing module. The pressure sensor and flow sensor are respectively connected to the test mounting hole and are used to collect pressure data and flow data within the test chamber. The pneumatic control module is used to control the positive / negative pressure supply within the test chamber. The data processing module is electrically connected to the pressure sensor, flow sensor, and pneumatic control module, and can calculate the opening threshold based on the collected pressure data and flow data.

3. The intelligent detection device for the opening threshold of the pressure relief valve and vacuum valve of the kettle lid according to claim 2, characterized in that, The gas path control module includes a positive pressure gas path, a negative pressure gas path, and a switching valve; the positive pressure gas path is used to provide a positive pressure test gas source, and the negative pressure gas path is used to provide a negative pressure test gas source; the switching valve is connected to the positive pressure gas path, the negative pressure gas path, and the test mounting hole respectively, and can switch the connection state between the positive pressure gas path or the negative pressure gas path and the test mounting hole.

4. The intelligent detection device for the opening threshold of the pressure relief valve and vacuum valve of the kettle lid according to claim 2, characterized in that, The number of pressure sensors and flow sensors is consistent with the number of test mounting holes, and each test mounting hole is equipped with at least one pressure sensor and one flow sensor.

5. The intelligent detection device for the opening threshold of the pressure relief valve and vacuum valve of the kettle lid according to claim 1, characterized in that, The human-machine interface can display the valve opening pressure and vacuum pressure corresponding to each test mounting hole, receive test parameter setting instructions input by the user, and display alarm information when the test exceeds the tolerance.

6. The intelligent detection device for the opening threshold of the pressure relief valve and vacuum valve of the kettle lid according to claim 2, characterized in that, The testing system also includes a data storage module, which is electrically connected to the data processing module and can store the test data corresponding to each test mounting hole, including valve opening pressure, test time, and judgment result.

7. The intelligent detection device for the opening threshold of the pressure relief valve and vacuum valve of the kettle lid according to claim 1, characterized in that, It also includes multiple indicator lights, with one indicator light corresponding to each test mounting hole; when the test is passed, the corresponding indicator light displays green; when the test fails, the corresponding indicator light displays red.

8. The intelligent detection device for the opening threshold of the pressure relief valve and vacuum valve of the kettle lid according to claim 3, characterized in that, The gas path control module also includes a gas storage tank and multiple regulating valves. The regulating valves include a regulating valve 1 for adjusting the maximum vacuum level of the vacuum valve, a regulating valve 2 for adjusting the vacuum flow rate, and a regulating valve 3 for adjusting the gas flow rate during positive pressure measurement. The gas storage tank is connected to the positive pressure gas path, the negative pressure gas path, and the regulating valves, respectively.

9. The intelligent detection device for the opening threshold of the kettle lid pressure relief valve and vacuum valve according to claim 2, characterized in that, It also includes an electrical system, which includes a 24V power supply and a USB-485 module; the 24V power supply powers the pressure sensor, flow sensor, and data processing module; the pressure sensor and flow sensor communicate with the data processing module via the USB-485 module.

10. The intelligent detection device for the opening threshold of the pressure relief valve and vacuum valve of the kettle lid according to claim 2, characterized in that, The data processing module can automatically determine whether the tested opening threshold is qualified according to the preset threshold range. When the opening threshold exceeds the preset range, it controls the human-machine interface and / or indicator lights to issue an alarm signal.

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