Anti-freezing emptying electromagnetic valve check-out device for motor train unit

Abstract

The utility model relates to the field of motor train unit water supply sanitary equipment, in particular to a motor train unit anti-freezing emptying electromagnetic valve check-out device. Comprising a housing, an internal circuit and an electromagnetic joint. The internal circuit comprises a battery B1, a battery B2, a temperature switch S3, a switch S1, an inductor L1, a capacitor C1, a capacitor C2, an XL6019 chip, a diode D1, a resistor R1, a variable resistor RP1, a capacitor C3, a capacitor C4, a self-recovery resistor PTC, a voltage display module, a toggle switch S2 and an output interface. The working voltage of the electromagnetic valve can be detected, so that the health state of the electromagnetic valve can be pre-judged, and the maintenance efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of water supply and sanitary equipment for high-speed trains, and in particular to a diagnostic device for an antifreeze and venting solenoid valve for high-speed trains. Background Technology

[0002] The descriptions in this section provide background information related to this disclosure and do not constitute prior art. With prolonged use of the EMU water system, components such as solenoid valves and temperature control boxes experience localized heat generation. The raw water is hard; when oxygen levels are insufficient, water molecules become unstable, reducing the solubility of calcium and magnesium ions and intensifying sedimentation, resulting in the formation of large amounts of scale in the water pipes and solenoid valves. When scale falls into the sealing valve core, pressure, the valve core's sealing rubber, and foreign objects create gaps, leading to prolonged leakage and frequent pipe leakage reports from the train, thus degrading service quality. Simultaneously, the moving parts and return springs within the valve core are constantly wetted by water. The heat generated during solenoid valve operation causes scale buildup inside the valve core, leading to valve core jamming, insufficient sealing pressure, and pipe leakage. As a crucial component of the EMU water system, the condition of the solenoid valve directly determines the normal operation of the water system, causing water supply malfunctions in the carriages and significantly impacting the quality of service facilities. In related technologies, it is common practice to clean the entire set of solenoid valves periodically, which is inefficient and labor-intensive. Summary of the Invention

[0003] In view of this, this application provides a diagnostic device for the antifreeze venting solenoid valve of a high-speed train, which can detect the working voltage of the solenoid valve in order to predict the health status of the solenoid valve and improve maintenance efficiency.

[0004] To achieve the above objectives, this application employs the following technical solution:

[0005] A diagnostic device for an antifreeze and venting solenoid valve of a high-speed train, characterized in that it includes a shell, an internal circuit, and an electromagnetic connector for connecting to the solenoid valve.

[0006] The internal circuit includes battery B1, battery B2, temperature switch S3, switch S1, inductor L1, capacitor C1, capacitor C2, XL6019 chip, diode D1, resistor R1, variable resistor RP1, capacitor C3, capacitor C4, self-resetting resistor PTC, voltage display module, toggle switch S2 and output interface.

[0007] The negative terminal of battery B1 is connected to one end of temperature switch S3, and the other end of temperature switch S3 is connected to the positive terminal of battery B2. The positive terminal of battery B1 is connected to one end of switch S1. The other end of switch S1 is connected to one end of capacitor C1, one end of capacitor C2, pin 4 of XL6019 chip, and one end of inductor L1. The other ends of capacitor C1 and capacitor C2 are both connected to the negative terminal of battery B2 and grounded.

[0008] The other end of inductor L1 is connected to pin 3 of XL6019 chip and the cathode of diode D1. Pin 1 of XL6019 chip is grounded, pin 2 is left floating, pin 5 is connected to the moving plate pin of variable resistor RP1, the fixed plate pin of one end of variable resistor RP1 is connected to one end of resistor R1, and the fixed plate pin of the other end of variable resistor RP1 is connected to the cathode of battery B2. The anode of diode D1 is connected to the other end of resistor R1, one end of capacitor C3, one end of capacitor C4, and one end of self-resetting resistor PTC.

[0009] The other end of the self-resetting resistor PTC is connected to one end of the voltage display module and one end of the toggle switch S2, and the other end of the toggle switch S2 is connected to one end of the output interface;

[0010] The other end of capacitor C3, the other end of capacitor C4, the other end of voltage display module, and the other end of output interface are all connected to the negative terminal of battery B2. The knob of variable resistor RP1 is rotatably mounted on the outer casing. The electromagnetic connector is connected to the output interface.

[0011] in:

[0012] Power supply: The circuit power supply consists of batteries B1 and B2 connected in series.

[0013] Temperature switch S3: Used to monitor battery temperature and provide over-temperature protection.

[0014] Energy storage element: When switch S1 is on, inductor L1 stores energy and when switch S1 is off, it releases energy. In conjunction with capacitor C1, capacitor C2 and diode D1, it can increase or decrease the voltage.

[0015] Diode D1: When the internal switching transistor of the XL6019 chip is turned off, diode D1 provides a freewheeling circuit for inductor L1, allowing the current in diode D1 to continue flowing, thereby maintaining the stability of the output voltage.

[0016] Voltage divider resistors; two resistors, resistor R1 and variable resistor RP1, are used to change the output voltage. The resistance of variable resistor RP1 can be changed by rotating the knob, which adjusts the feedback voltage and thus changes the output voltage of the XL6019 chip.

[0017] Input filter capacitors: Capacitors C1 and C2 are used to filter out ripple and noise in the input voltage, making the voltage input to the XL6019 chip more stable and improving the stability and anti-interference capability of the circuit.

[0018] Output filter capacitors: Capacitors C3 and C4 are used to filter out ripple in the output voltage, making the output voltage smoother and meeting the load's power quality requirements. This improves output voltage stability.

[0019] The XL6019 chip is a DC-DC converter.

[0020] Self-resetting resistors (PTCs) are used to automatically disconnect the circuit when an overcurrent occurs, protecting circuit components.

[0021] Toggle switch S2: Used to control the on / off state of the output circuit.

[0022] Output interface: The output port of the circuit, which provides converted and processed power.

[0023] The aforementioned application discloses a diagnostic device for an antifreeze venting solenoid valve in a high-speed train. By rotating a knob, the voltage supplied by batteries B1 and B2 is boosted to the required voltage via an XL6019 chip, and the corresponding voltage is displayed on a display module. Furthermore, a solenoid valve is connected via an electromagnetic connector, and the set voltage is output from the output interface. This determines whether the solenoid valve is activated, thereby obtaining the valve's operating voltage and thus assessing its health status, improving maintenance efficiency.

[0024] In some embodiments, the internal circuit further includes a charging port and a power display module, one end of which is connected to the positive terminal of battery B1, and the other end of which is connected to the negative terminal of battery B2.

[0025] The charging port is the circuit's input port, used to connect an external power source to charge the battery. The power display module is used to display the battery's status.

[0026] In some embodiments, capacitors C1 and C3 are both 220μF, capacitors C2 and C4 are both 150μF, resistor R1 has a resistance of 500Ω, variable resistor RP1 has a resistance range of 0-10kΩ, the maximum current of the self-resetting resistor PTC is 3A, the set temperature of temperature switch S3 is 45°C, and the voltage across the positive terminal of battery B1 and the negative terminal of battery B2 is 7.6V. Preferably, a lithium battery is used.

[0027] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0028] 1. Significantly improves the flexibility and compatibility of handling solenoid valve malfunctions in the water system. Normally, pipeline leaks require the train set to have sufficient high pressure to operate the water system, necessitating troubleshooting and status verification. This can impact other maintenance tasks and create inconvenience. With the solenoid valve inspection device, the train set only needs to supply power during troubleshooting, and the solenoid valve's installation status can be directly confirmed through this device, avoiding any conflict with other maintenance operations.

[0029] 2. Effectively reduces manpower and improves work efficiency. Cleaning solenoid valves requires additional personnel besides the operator to coordinate the main control. Cleaning the solenoid valves in one car's lower water tank typically takes about 2.2 hours. After cleaning, high pressure is needed to verify the solenoid valves and water system, a process that takes 3-4 hours. This device eliminates the need for additional manpower, stabilizes the work time at around 1.5 hours, alleviates working conditions, increases efficiency by 40%, and saves over 50% on labor costs.

[0030] 3. High practicality and speed. This device makes full use of electromagnetic principles. By controlling the output voltage and fault phenomena, it can quickly and accurately pinpoint solenoid valve malfunctions and provide a comprehensive understanding of the solenoid valve's health status. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0032] Figure 2 This is a circuit diagram of an embodiment of this application.

[0033] Labeling explanation: 1. Outer shell; 2. Electromagnetic connector; 3. Knob. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in further detail below with reference to the accompanying drawings. The terminology used in the embodiments section of this application is only for explaining specific embodiments and is not intended to limit the application.

[0035] See Figures 1 to 2 This application provides a device for inspecting the antifreeze and venting solenoid valve of a high-speed train, including a housing 1, an internal circuit and an electromagnetic connector 2 for connecting to the solenoid valve;

[0036] The internal circuitry includes battery B1, battery B2, temperature switch S3, switch S1, inductor L1, capacitor C1, capacitor C2, XL6019 chip, diode D1, resistor R1, variable resistor RP1, capacitor C3, capacitor C4, self-resetting resistor PTC, voltage display module, toggle switch S2, and output interface.

[0037] The negative terminal of battery B1 is connected to one end of temperature switch S3, and the other end of temperature switch S3 is connected to the positive terminal of battery B2. The positive terminal of battery B1 is connected to one end of switch S1, and the other end of switch S1 is connected to one end of capacitor C1, one end of capacitor C2, pin 4 of XL6019 chip, and one end of inductor L1. The other ends of capacitor C1 and capacitor C2 are both connected to the negative terminal of battery B2 and grounded.

[0038] The other end of inductor L1 is connected to pin 3 of XL6019 chip and the cathode of diode D1. Pin 1 of XL6019 chip is grounded, pin 2 is left floating, pin 5 is connected to the moving plate pin of variable resistor RP1, the fixed plate pin of one end of variable resistor RP1 is connected to one end of resistor R1, the fixed plate pin of the other end of variable resistor RP1 is connected to the cathode of battery B2, and the anode of diode D1 is connected to the other end of resistor R1, one end of capacitor C3, one end of capacitor C4, and one end of self-resetting resistor PTC.

[0039] The other end of the self-resetting resistor PTC is connected to one end of the voltage display module and one end of the toggle switch S2, and the other end of the toggle switch S2 is connected to one end of the output interface.

[0040] The other end of capacitor C3, the other end of capacitor C4, the other end of voltage display module, and the other end of output interface are all connected to the negative terminal of battery B2. The knob of variable resistor RP1 is rotatably mounted on the outer casing, and the electromagnetic connector is connected to the output interface.

[0041] in:

[0042] Power supply: The circuit power supply consists of batteries B1 and B2 connected in series.

[0043] Temperature switch S3: Used to monitor battery temperature and provide over-temperature protection.

[0044] Energy storage element: When switch S1 is on, inductor L1 stores energy and when switch S1 is off, it releases energy. In conjunction with capacitor C1, capacitor C2 and diode D1, it can increase or decrease the voltage.

[0045] Diode D1: When the internal switching transistor of the XL6019 chip is turned off, diode D1 provides a freewheeling circuit for inductor L1, allowing the current in diode D1 to continue flowing, thereby maintaining the stability of the output voltage.

[0046] Voltage divider resistors; two resistors, resistor R1 and variable resistor RP1, are used to change the output voltage. The resistance of variable resistor RP1 can be changed by rotating the knob, which adjusts the feedback voltage and thus changes the output voltage of the XL6019 chip.

[0047] Input filter capacitors: Capacitors C1 and C2 are used to filter out ripple and noise in the input voltage, making the voltage input to the XL6019 chip more stable and improving the stability and anti-interference capability of the circuit.

[0048] Output filter capacitors: Capacitors C3 and C4 are used to filter out ripple in the output voltage, making the output voltage smoother and meeting the load's power quality requirements. This improves output voltage stability.

[0049] The XL6019 chip is a DC-DC converter.

[0050] Self-resetting resistors (PTCs) are used to automatically disconnect the circuit when an overcurrent occurs, protecting circuit components.

[0051] Toggle switch S2: Used to control the on / off state of the output circuit.

[0052] Output interface: The output port of the circuit, which provides converted and processed power.

[0053] This high-speed train's antifreeze venting solenoid valve inspection device involves rotating a knob and using an XL6019 chip to boost the voltage supplied by batteries B1 and B2 to the required level. The corresponding voltage is then displayed on a display module. Furthermore, it connects to the corresponding solenoid valve via an electromagnetic connector and outputs the set voltage from the output interface. This process determines whether the solenoid valve is activated, thus obtaining the valve's operating voltage and assessing its health status, thereby improving maintenance efficiency.

[0054] The internal circuit also includes a charging port and a power display module. One end of the charging port and the power display module are connected to the positive terminal of battery B1, and the other end of the charging port and the power display module are connected to the negative terminal of battery B2.

[0055] The charging port is the circuit's input port, used to connect an external power source to charge the battery. The power display module is used to display the battery's status.

[0056] Capacitors C1 and C3 are both 220μF, capacitors C2 and C4 are both 150μF, resistor R1 has a resistance of 500Ω, variable resistor RP1 has a resistance range of 0-10kΩ, the self-resetting resistor PTC has a maximum current of 3A, the temperature switch S3 is set to 45℃, and the voltage across the positive terminal of battery B1 and the negative terminal of battery B2 is 7.6V. A lithium battery is preferred.

[0057] The following is a brief description of the working process and usage of the antifreeze venting solenoid valve inspection device for high-speed trains according to the above embodiments:

[0058] Working principle:

[0059] Power is supplied by a lithium battery, and the 7.6V DC voltage is boosted by the XL6019 chip, with the boost voltage continuously adjustable from 7.6V to 25.5V. The health status of the solenoid valve is assessed by judging its operating voltage. Through long-term practical application and analysis of a large amount of data, it was found that solenoid valves in different health states have different operating voltage characteristics.

[0060] For high-performance solenoid valves, a voltage of 16V-20V is sufficient for proper operation. These valves function normally at relatively low voltages, with their internal structure and performance in an ideal state. For healthy solenoid valves in use, they typically operate normally within a voltage range of 20V-22V. This operating voltage range indicates that while the solenoid valve may experience some wear and tear during use, it remains in good overall condition and can reliably complete its tasks.

[0061] When the operating voltage of a solenoid valve is between 22V and 24V, it often indicates a problem with the valve. In this case, it's usually due to scale buildup on the valve core housing. The presence of scale increases the internal resistance of the solenoid valve, requiring a higher voltage to operate. This suggests that the solenoid valve's health has been compromised, necessitating further inspection and maintenance.

[0062] Operation process:

[0063] Connect the electromagnetic connector to the antifreeze venting solenoid valve;

[0064] Touch the outer surface of the stainless steel corrugated water pipe behind the solenoid valve with your right hand (the temperature gradually warms up when there is no water flowing and cools down when water flows through it).

[0065] Make sure the toggle switch S3 is facing down, i.e., in the off position;

[0066] Use your left thumb to turn the knob and adjust the voltage to around 17V;

[0067] Turn the switch upwards to the open position, at which point the solenoid valve is energized;

[0068] If the solenoid valve does not operate, adjust the voltage adjustment knob to approximately 17V, 20V, 22V, and 24V. Determine if the solenoid valve is operating properly by touching the valve body with your right hand and listening to the sound of its operation. When adjusted to the "almost operating" state, you need to continuously toggle the toggle switch three times. If it operates normally twice, it meets the health standard; if it fails to operate twice, it does not meet the health standard.

[0069] The solenoid valve is cleaned or replaced by assessing its health status.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A kind of EMU anti-freezing emptying electromagnetic valve body inspection device, it is characterized in that: It comprises a shell, an internal circuit and an electromagnetic joint for connecting with an electromagnetic valve; The internal circuit comprises a battery B1, a battery B2, a temperature switch S3, a switch S1, an inductor L1, a capacitor C1, a capacitor C2, an XL6019 chip, a diode D1, a resistor R1, a variable resistor RP1, a capacitor C3, a capacitor C4, a self-recovery resistor PTC, a voltage display module, a toggle switch S2 and an output interface. A negative pole of the battery B1 is connected with one end of the temperature switch S3, another end of the temperature switch S3 is connected with a positive pole of the battery B2, a positive pole of the battery B1 is connected with one end of the switch S1, another end of the switch S1 is connected with one end of the capacitor C1, one end of the capacitor C2, No.4 pin of the XL6019 chip and one end of the inductor L1 respectively, another end of the capacitor C1 and another end of the capacitor C2 are both connected with a negative pole of the battery B2 and grounded. Another end of the inductor L1 is connected with No.3 pin of the XL6019 chip and a cathode end of the diode D1 respectively, No.1 pin of the XL6019 chip is grounded, No.2 pin is suspended, No.5 pin is connected with a moving piece pin of the variable resistor RP1, a fixed piece pin of one end of the variable resistor RP1 is connected with one end of the resistor R1, a fixed piece pin of another end of the variable resistor RP1 is connected with a negative pole of the battery B2, an anode end of the diode D1 is connected with another end of the resistor R1, one end of the capacitor C3, one end of the capacitor C4 and one end of the self-recovery resistor PTC respectively. Another end of the self-recovery resistor PTC is connected with one end of the voltage display module and one end of the toggle switch S2 respectively, another end of the toggle switch S2 is connected with one end of the output interface. Another end of the capacitor C3, another end of the capacitor C4, another end of the voltage display module and another end of the output interface are all connected with a negative pole of the battery B2, a knob of the variable resistor RP1 is rotatably arranged on the shell, the electromagnetic joint is connected with the output interface.

2. The device according to claim 1, characterized in that: The internal circuit further comprises a charging port and a power display module, one end of the charging port and the power display module is connected with a positive pole of the battery B1, another end of the charging port and the power display module is connected with a negative pole of the battery B2.

3. The device according to claim 1, characterized in that: The capacitor C1 and the capacitor C3 are both 220μF, the capacitor C2 and the capacitor C4 are both 150μF, the resistor R1 is 500Ω, the variable resistor RP1 is 0-10kΩ, the maximum current of the self-recovery resistor PTC is 3A, the setting temperature of the temperature switch S3 is 45℃, the voltage between the positive pole of the battery B1 and the negative pole of the battery B2 is 7.6V.

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