Testing device of electromagnetic valve

Abstract

The utility model relates to the technical field of solenoid valve detection, and discloses a solenoid valve testing device comprising an air pressure detection mechanism, the air pressure detection mechanism comprises a pressure switch and an air source pipe, and two sections of the air source pipe are respectively communicated with the pressure switch and an output port of a solenoid valve; the controller is electrically connected to the air pressure detection mechanism so as to receive information of the air pressure detection mechanism, and the controller is further electrically connected to the electromagnetic valve; and the warning mechanism is electrically connected to the controller. Automation of the electromagnetic valve detection process is achieved, the detection efficiency is improved by monitoring the change of the air pressure in the electromagnetic valve, faults can be found in time when the electromagnetic valve acts slowly or leaks air, an unqualified electromagnetic valve is prevented from being used on site, the accuracy of the detection result is improved, and the reliability of an instrument is further improved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve testing technology, and in particular to a testing device for electromagnetic valves. Background Technology

[0002] Currently, the solenoid valves in petrochemical companies' PSA and VPSA units can operate at a frequency of up to 1 million times per year. Furthermore, the sealing requirements for these solenoid valves are extremely high during operation; even a slight leak can cause the valve to time out, leading to reduced output or even shutdown of the unit. Therefore, before replacing a solenoid valve, an airtightness test must be performed to ensure its performance meets the requirements of long-term operation. Currently, this testing is generally conducted manually, which is inefficient and yields inaccurate results, failing to meet subsequent operational needs. Utility Model Content

[0003] The purpose of this invention is to provide a testing device for solenoid valves, which automates the solenoid valve testing process. By monitoring changes in the air pressure inside the solenoid valve, the testing efficiency is improved. Faults such as slow operation or air leakage can be detected promptly, preventing the use of substandard solenoid valves in the field, improving the accuracy of the test results, and further enhancing the reliability of the instrument.

[0004] To achieve the above objectives, this utility model provides a testing device for a solenoid valve, comprising:

[0005] A pressure detection mechanism, comprising a pressure switch and a gas source pipe, wherein the two ends of the gas source pipe are respectively connected to the output ports of the pressure switch and the solenoid valve;

[0006] A controller, electrically connected to the air pressure detection mechanism to receive information from the air pressure detection mechanism, and the controller is also electrically connected to the solenoid valve;

[0007] A warning mechanism is electrically connected to the controller.

[0008] Compared with existing technologies, the solenoid valve testing device of this utility model has the following advantages: During operation, gas is introduced into the solenoid valve. The air pressure detection mechanism is connected to the inside of the solenoid valve through an air source pipe, and the air pressure environment is synchronized to the pressure switch in real time through the air source pipe. If the pressure value detected by the pressure switch is lower than the air source pressure or the air pressure is not detected within a specified time, it is determined that the solenoid valve is leaking or acting slowly. The corresponding pressure switch contacts cannot flip, and a signal is sent to the controller. The controller determines that the airtightness of the solenoid valve is problematic based on the inconsistency between the signal from the pressure switch and the signal sent to the solenoid valve, and then sends a signal to the warning device to notify the test personnel. This application realizes the automation of the solenoid valve testing process. By monitoring the changes in air pressure inside the solenoid valve, the testing efficiency is improved. When the solenoid valve acts slowly or leaks, the fault can be detected in time, avoiding the use of unqualified solenoid valves in the field, improving the accuracy of the test results, and further improving the reliability of the instrument.

[0009] The testing device for the solenoid valve according to this utility model embodiment includes a pressure detection mechanism comprising at least two pressure switches, both of which are connected to the output port of the solenoid valve.

[0010] The testing device for the solenoid valve in this embodiment of the utility model also has at least two air supply pipes, each of which is connected to the output port of a separate solenoid valve and a pressure switch.

[0011] The solenoid valve testing device of this utility model embodiment has an input port of the solenoid valve connected to an air source, and the input air pressure of the air source corresponds to the action setting value of the pressure switch.

[0012] The solenoid valve testing device of this utility model embodiment includes a controller comprising a PLC, wherein the PLC is electrically connected to a relay and is connected to the solenoid valve and the warning mechanism through the relay.

[0013] The testing device for the solenoid valve according to this utility model embodiment includes a warning mechanism comprising a warning light or a warning horn.

[0014] The solenoid valve testing device of this utility model embodiment includes a controller that is sequentially connected to a terminal block and an air switch.

[0015] The solenoid valve testing device of this utility model embodiment has a pneumatic pressure detection mechanism electrically connected to the controller through the wiring terminal.

[0016] The testing device for the solenoid valve according to this utility model embodiment has a compression fitting between the air source pipe and the output port of the solenoid valve.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the testing device for the solenoid valve according to an embodiment of the present invention.

[0019] In the diagram, 1 is the air pressure detection mechanism; 11 is the pressure switch; 12 is the air supply pipe; 2 is the solenoid valve; 21 is the output port; 22 is the input port; 3 is the controller; 4 is the warning mechanism; 5 is the wiring terminal; and 6 is the air switch. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] like Figure 1As shown, a preferred embodiment of the present invention provides a testing device for a solenoid valve, comprising a pressure detection mechanism 1 connected to the solenoid valve 2 to be tested. The pressure detection mechanism 1 includes a pressure switch 11 and a gas supply pipe 12. The pressure switch 11 is used to detect the gas pressure inside the solenoid valve 2. The two ends of the gas supply pipe 12 are respectively connected to the pressure switch 11 and the output port 21 of the solenoid valve 2, providing a detection path for the pressure switch 11. The testing device for the solenoid valve 2 also includes a controller 3, which may be a PLC, a microcontroller, etc. The controller 3 is electrically connected to the pressure detection mechanism 1 to receive information from the pressure detection mechanism 1. The controller 3 is also electrically connected to the solenoid valve 2 to control the opening and closing of the solenoid valve 2 during the testing process, enabling automatic high-frequency operation of the solenoid valve 2. The testing device for the solenoid valve 2 also includes an alarm mechanism 4 electrically connected to the controller 3. After receiving a signal from the solenoid valve 2, the alarm mechanism 4 sends an alarm signal to notify the tester.

[0025] During operation, gas is introduced into solenoid valve 2. The air pressure detection mechanism 1 is connected to the inside of solenoid valve 2 via air source pipe 12, which then synchronizes the air pressure environment to pressure switch 11 in real time. If the pressure value detected by pressure switch 11 is lower than the air source pressure, or if the air pressure is not detected within a specified time, it is determined that solenoid valve 2 is leaking or operating slowly. Consequently, the contacts of pressure switch 11 cannot flip, sending a signal to controller 3. Controller 3, based on the inconsistency between the signal from pressure switch 11 and the signal sent to solenoid valve 2, determines that the airtightness of solenoid valve 2 is problematic and then sends a signal to an alarm device to notify the testing personnel. This application automates the detection process of solenoid valve 2. By monitoring changes in air pressure within solenoid valve 2, detection efficiency is improved. Faults can be detected promptly when solenoid valve 2 operates slowly or leaks, preventing the use of substandard solenoid valves in the field, improving the accuracy of test results, and further enhancing the reliability of the instrument.

[0026] In some embodiments of this utility model, the air pressure detection mechanism 1 includes at least two pressure switches 11. The two pressure switches 11 perform air pressure detection simultaneously, ensuring that accurate results can still be detected even if one of the pressure switches 11 fails. Both pressure switches 11 are connected to the output ports 21 of the solenoid valve 2, and are connected to different output ports 21 of the solenoid valve 2, ensuring that the detection process of the two pressure switches 11 is independent, preventing mutual interference during the detection process and causing inaccurate detection results.

[0027] In some embodiments of this utility model, at least two air source pipes 12 are provided. Each air source pipe 12 is connected to a separate output port 21 of the solenoid valve 2 and a pressure switch 11. Each pressure switch 11 corresponds to one air source pipe 12. The two air source pipes 12 are connected to two separate output ports 21, so that the two pressure switches 11 can ensure independent detection and ensure the accuracy of the detection results.

[0028] In some embodiments of this utility model, the input port 22 of the solenoid valve 2 is connected to an air source. The input air pressure of the air source corresponds to the action setting value of the pressure switch 11. The input air pressure of the air source to the solenoid valve 2 is a fixed value. If the air pressure received in the air switch is less than the input air pressure of the solenoid valve 2, there may be a leakage in the solenoid valve 2. It is also possible that the solenoid valve 2 is moving too slowly, affecting the air pressure. Both of these situations are quality problems of the solenoid valve 2 itself and should be excluded to prevent it from affecting the operation of other equipment in subsequent work.

[0029] In some embodiments of this utility model, the controller 3 includes a PLC, which is electrically connected to a relay and connected to the solenoid valve 2 and the warning mechanism 4 through the relay. The PLC can directly control the warning mechanism 4 and the solenoid valve 2. When a fault is detected in the solenoid valve 2, a signal can be directly sent to the warning mechanism 4. When a test needs to be started, a signal is sent to the solenoid valve 2 to open the solenoid valve 2 to perform internal air pressure detection.

[0030] In some embodiments of this utility model, the warning mechanism 4 includes a warning light or a warning horn, which can emit acoustic or optical signals to notify the testing personnel, so that the testing personnel can mark and pick out the solenoid valves 2 with quality problems in a timely manner.

[0031] In some embodiments of this utility model, the controller 3 is also connected in sequence to a terminal block 5 and an air switch 6. The air switch 6 is connected to various positions of the detection device. The air switch 6 can prevent short circuits in the detection circuit during the detection process, thus ensuring the overall safety of the detection device.

[0032] In some embodiments of this utility model, the air pressure detection mechanism 1 is electrically connected to the controller 3 through the terminal block 5. A set of terminal blocks 5 simultaneously connects the air switch 6 and the air pressure detection mechanism 1 to the controller 3, saving parts and reducing detection costs.

[0033] In some embodiments of this utility model, a compression fitting is provided between the gas source pipe 12 and the output port 21 of the solenoid valve 2 to prevent air leakage between the gas source pipe 12 and the input port 22, thereby preventing any impact on the accuracy of the detection and ensuring that the detection results are accurate.

[0034] The working process of this utility model is as follows: Gas is introduced into the solenoid valve 2. The air pressure detection mechanism 1 is connected to the inside of the solenoid valve 2 through the air source pipe 12, and then the air pressure environment is synchronized to the pressure switch 11 in real time through the air source pipe 12. If the pressure value detected by the pressure switch 11 is lower than the air source pressure or the air pressure is not detected within a specified time, it is judged that the solenoid valve 2 is leaking or acting slowly. The corresponding contact of the pressure switch 11 cannot flip, and a signal is sent to the controller 3. The controller 3 judges that the air tightness of the solenoid valve 2 is problematic based on the inconsistency between the signal from the pressure switch 11 and the signal sent to the solenoid valve 2, and then sends the signal to the warning device to notify the test personnel.

[0035] In summary, this utility model embodiment provides a testing device for a solenoid valve 2, which automates the testing process of the solenoid valve 2. By monitoring the changes in air pressure inside the solenoid valve 2, the testing efficiency is improved. When the solenoid valve 2 operates slowly or leaks air, the fault can be detected in time, preventing unqualified solenoid valves 2 from being used on site, improving the accuracy of the test results, and further improving the reliability of the instrument.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A testing device for a solenoid valve, characterized by comprising: The utility model relates to a kind of air pressure detection device, including: Air pressure detection mechanism, the air pressure detection mechanism includes pressure switch and air source pipe, the air source pipe two sections are communicated pressure switch and the output port of electromagnetic valve respectively; Controller, the controller is electrically connected to the air pressure detection mechanism to receive the information of the air pressure detection mechanism, and the controller is also electrically connected to the electromagnetic valve; Warning mechanism, the warning mechanism is electrically connected to the controller.

2. The electromagnetic valve testing device according to claim 1, characterized by: The air pressure detection mechanism includes at least two pressure switches, and the two pressure switches are connected to the output port of the electromagnetic valve.

3. The electromagnetic valve testing device according to claim 2, characterized by: The air source pipe is also provided with at least two, and each air source pipe is connected to the output port of a single electromagnetic valve and a pressure switch respectively.

4. The electromagnetic valve testing device according to claim 1, characterized by: The input port of the electromagnetic valve is connected to the air source, and the input air pressure of the air source corresponds to the action set value of the pressure switch.

5. The electromagnetic valve testing device according to claim 1, characterized by: The controller includes PLC, and the PLC is electrically connected to relay and connects the electromagnetic valve and the warning mechanism through the relay.

6. The electromagnetic valve testing device according to claim 1, characterized by: The warning mechanism includes warning light or warning horn.

7. The electromagnetic valve testing device according to claim 1, characterized by: The controller is also connected to terminal and air switch in sequence.

8. The electromagnetic valve testing device according to claim 7, characterized by: The air pressure detection mechanism is electrically connected to the controller through the terminal.

9. The electromagnetic valve testing device according to claim 1, characterized by: A sleeve joint is provided between the air source pipe and the output port of the electromagnetic valve.

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