Railway three-phase alternating current point switch simulator

Abstract

The utility model relates to the technical field of rail transit signals, in particular to a railway three-phase alternating current point switch simulator which comprises an electronic relay, a three-phase alternating current asynchronous motor, a phase sequence detection unit, a resistance-capacitance plug-in, a non-self-resetting switch, a DC-DC adjustable boosting module and a TYPE-C port charging mobile power supply. The switch machine simulator comprises seven output terminals X1, X2, X3, X4, X5, X6 and X7, the output terminals corresponding to the electronic relay are X2, X3, X4, X5, X6 and X7, and the output terminal corresponding to the three-phase alternating current asynchronous motor is X1; the A phase, the B phase and the C phase of the three-phase alternating-current asynchronous motor are respectively connected with the phase sequence detection unit in parallel; the resistance-capacitance plug-in is respectively connected in parallel with the A phase, the B phase and the C phase of the three-phase alternating current asynchronous motor; the TYPE-C port charging mobile power supply is connected with the DC-DC adjustable voltage boosting module; and the DC-DC adjustable boosting module is connected with the electronic relay and the non-self-resetting switch respectively. The device can detect the problems of reverse rotation of the motor, wiring errors of the rectification box and the like, and improves the working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit signals, in particular to a railway three-phase AC switch simulator. Background Art

[0002] The existing three-phase AC turnout machine simulation device has five external terminals, X1, X2, X3, X4, and X5. The motor simulation unit consists of four 380V AC relays to simulate the rotation of the motor. Two delay relays are used to stop the motor, switch the position indication circuit, and switch the polarity of the rectifier diode. The turnout positioning and reverse position are displayed through indication.

[0003] The switch machine part of the existing railway three-phase AC switch machine simulator is realized by connecting AC relays and time-delay relays. During the construction process, it is impossible to detect the reversal of the motor on site, and it is impossible to find the wrong indoor combined phase sequence before the line is switched. It is also impossible to reflect whether the phase failure protector DBQ is working properly. It is also impossible to check whether the wiring of the outdoor terminal cable box and rectifier box is correct and intact. Summary of the Invention

[0004] The purpose of this utility model is to improve and innovate the shortcomings and problems existing in the background technology, and to provide a railway three-phase AC switch simulator. The technical solutions adopted are as follows:

[0005] An embodiment of the present invention provides a railway three-phase AC switch simulator, which specifically includes:

[0006] Electronic relay, three-phase AC asynchronous motor, phase sequence detection unit, resistor-capacitor plug-in, non-self-resetting switch, DC-DC adjustable boost module and TYPE-C port charging mobile power supply;

[0007] The switch machine simulator includes 7 output terminals, namely X1, X2, X3, X4, X5, X6 and X7. The output terminals corresponding to the electronic relay are X2, X3, X4, X5, X6 and X7, and the output terminal corresponding to the three-phase AC asynchronous motor is X1.

[0008] Phases A, B, and C of the three-phase AC asynchronous motor are connected in parallel with the phase sequence detection unit respectively; the resistor and capacitor plug-ins are connected in parallel with phases A, B, and C of the three-phase AC asynchronous motor respectively;

[0009] The TYPE-C port charging mobile power supply is connected to the DC-DC adjustable boost module; the DC-DC adjustable boost module is respectively connected to the electronic relay and the non-self-resetting switch.

[0010] Preferably, the switch machine simulator is connected to an outdoor terminal cable box through seven output terminals, namely X1, X2, X3, X4, X5, X6 and X7. The outdoor terminal cable box includes two parts, namely a switch machine control circuit and a rectifier box.

[0011] Preferably, the electronic relay is further connected to the rectifier box via output terminals X6 and X7.

[0012] Preferably, phase A of the three-phase AC asynchronous motor is connected to the outdoor terminal cable box through the output terminal X1, and phases B and C are connected to the electronic relay.

[0013] Preferably, the TYPE-C port charging mobile power supply provides a DC 24V working power supply to the electronic relay and the non-self-resetting switch simultaneously through a DC-DC adjustable boost module.

[0014] Preferably, the X1, X2, X3, X4 and X5 output terminals are also connected to the phase failure protector through indoor 1DQJF and 2DQJ relay circuits.

[0015] The advantages and beneficial effects of the present invention are as follows: the switch machine simulator in the present invention includes an electronic relay, a three-phase AC asynchronous motor, a phase sequence detection unit, a resistor-capacitor plug-in, a non-self-resetting switch, a DC-DC adjustable boost module and a TYPE-C port charging mobile power supply; the switch machine simulator includes 7 output terminals, namely X1, X2, X3, X4, X5, X6 and X7, the output terminals corresponding to the electronic relay are X2, X3, X4, X5, X6 and X7, and the output terminal corresponding to the three-phase AC asynchronous motor is X1; the A phase, B phase and C phase of the three-phase AC asynchronous motor are respectively connected in parallel with the phase sequence detection unit; the resistor-capacitor plug-in is respectively connected in parallel with the A phase, B phase and C phase of the three-phase AC asynchronous motor; the TYPE-C port charging mobile power supply is connected to the DC-DC adjustable boost module; the DC-DC adjustable boost module is respectively connected to the electronic relay and the non-self-resetting switch. It can detect on-site motor reversal problems, discover indoor combined phase sequence errors before switching, and reflect whether the phase-break protector DBQ is working normally. At the same time, it can check whether the wiring of the outdoor terminal cable box and rectifier box is correct and intact, and eliminate all wiring errors and faults other than the switch machine itself before switching, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the advantages of the embodiments of the present invention, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1The utility model provides a circuit design block diagram of a railway three-phase AC switch simulator. DETAILED DESCRIPTION

[0018] In order to further illustrate the solution of the present invention, a railway three-phase AC switch simulator proposed according to the present invention, its specific implementation method, structure, features and advantages are described in detail below with reference to the accompanying drawings.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0020] The specific scheme of a railway three-phase AC switch simulator provided by the present invention is described in detail below with reference to the accompanying drawings.

[0021] Example:

[0022] The primary application scenario for this utility model is that the railway three-phase AC switch simulator can comprehensively test the switch chamber's operation and display circuits, including the start, stop, and turn of the three-phase AC electric switch, as well as the accuracy and reliability of the switch display circuits. This helps identify and resolve potential faults and problems before the equipment is officially put into operation. The simulator can improve the utilization rate of existing railway line windows and enhance the overall operational efficiency of the railway system.

[0023] See also Figure 1 , which shows a circuit design block diagram of a railway three-phase AC switch simulator provided by the utility model in an embodiment of the utility model. The switch simulator in the utility model mainly includes an electronic relay, a three-phase AC asynchronous motor, a phase sequence detection unit, a resistor-capacitor plug-in, a non-self-resetting switch, a DC-DC adjustable boost module and a TYPE-C port charging mobile power supply.

[0024] Specifically, the electronic relay in the switch simulator uses a 6-channel 24V relay module with optocoupler isolation to support high and low level triggering of the microcontroller. Each channel of the microcontroller contains a set of front, middle and rear contacts. The two microcontrollers have a total of 12 sets of contacts, which can fully meet the wiring requirements of the real switch. The switch simulator is connected to the outdoor terminal cable box through 7 output terminals, namely X1, X2, X3, X4, X5, X6 and X7. The outdoor terminal cable box consists of two parts, namely the switch control circuit and the rectifier box. The output terminals used to connect the switch control circuit are X1, X2, X3, X4 and X5, the corresponding output terminals of the electronic relay are X2, X3, X4, X5, X6 and X7, and the corresponding output terminal of the three-phase AC asynchronous motor is X1; the electronic relay is also connected to the rectifier box through output terminals X6 and X7.

[0025] Among them, the X1, X2, X3, X4 and X5 output terminals are also connected to the indoor 1DQJF and 2DQJ relay circuits, and the indoor 1DQJF and 2DQJ relay circuits are connected to the phase failure protector DBQ, that is, the X1, X2, X3, X4 and X5 output terminals are connected to the phase failure protector DBQ through the indoor 1DQJF and 2DQJ relay circuits.

[0026] The three-phase AC asynchronous motor uses a reversible control motor with a rated voltage of 380V and a rated power of 6W. The motor does not require voltage conversion. Phase A of the three-phase AC asynchronous motor is connected to the outdoor terminal cable box through output terminal X1, and phases B and C are connected to the electronic relay. During the indoor single-operation test, the rotation direction of the three-phase AC asynchronous motor is combined with the left-hand or right-hand installation of the on-site switch device to determine whether the motor is reversed. If reversed, the three-phase output phase sequence needs to be modified indoors at the phase-break protector DBQ.

[0027] This simulator connects phase sequence detection units in parallel at the A, B and C phases of the three-phase AC asynchronous motor 380V power input port. The phase sequence detection unit uses the HHD11-B / -C / D three-phase 380V motor overvoltage, undervoltage and phase loss protection relay, which plays the role of phase sequence inspection and judgment, and assists in judging whether the indoor output is correct without affecting the normal rotation of the motor.

[0028] The RC plugs are connected in parallel to the input terminals of each phase, A, B, and C, of the three-phase AC asynchronous motor. The three-phase RC plugs are connected in a star configuration, allowing a DC current of 1-2A to flow through the current coil of the phase-failure protector DBQ in the indoor control circuit, maintaining the activation of the BHJ protective relay. The RC plugs use a 14UF film capacitor with a rated voltage of 450V and a 220Ω resistor with a rated voltage of 450V, connected in parallel.

[0029] The TYPE-C rechargeable power bank uses a 5V 10000mAh rechargeable power bank connected to a DC-DC adjustable boost module. This module uses an MT360 2A boost board DC-DC adjustable boost regulated power supply module. The DC-DC adjustable boost module is connected to an electronic relay and a non-self-resetting switch. The non-self-resetting switch uses a 19mm waterproof metal pushbutton switch with a self-resetting, self-locking 24V voltage and an LED indicator. It has two operating modes: self-resetting and self-locking, allowing for flexible switching. In self-resetting mode, the circuit is connected when the button is pressed and automatically disconnected when released. In self-locking mode, the circuit is connected and locked when the button is first pressed, and disconnected and unlocked when the button is pressed again. The power bank provides 24V DC operating power to the electronic relay and the non-self-resetting switch via the DC-DC adjustable boost module. The utility model operates in self-locking mode.

[0030] The non-self-resetting switch provides a trigger level to the electronic relay through the front and rear contacts, changing the on-off state of the electronic relay contacts, thereby truly reflecting the existing connection state of the fixed and reverse position group contacts inside the switch machine. At the same time, the rectifier box included in the outdoor terminal cable box is incorporated into the overall circuit through the X6 and X7 output terminal wiring to check whether the polarity of the rectifier box wiring is incorrect.

[0031] A three-phase AC asynchronous motor is used to verify the correct phase sequence of the output power of the indoor phase-failure protector DBQ. The phase sequence is then reversed based on the on-site switch installation location. The functioning of the indoor combined phase-failure protector DBQ is determined by observing the continuous operation time of the switch. The simulator, using a three-phase AC motor and electronic relays, allows for accurate wiring according to the design drawings. It provides seven output terminals that can be connected to the rectifier box installed in the terminal cable box to verify reverse installation. This allows for correct wiring errors, material, and equipment failures other than those in the switch itself to be eliminated before switching. This is crucial for improving skylight utilization, increasing labor productivity, and reducing costs and increasing efficiency.

[0032] Through the coordination of two indoor relays, 1DQJF and 2DQJ, power is supplied to X1, X2, and X5 during positioning control, causing the switch to rotate forward. Power is supplied to X1, X3, and X4 during reverse control, causing the switch to rotate reversely. The indoor control circuit supplies three-phase power to the simulator via the phase-failure protector DBQ, driving the simulator. If the indoor output voltages of phases A, B, and C differ by 120 degrees in the forward direction, the simulator's miniature three-phase AC asynchronous motor will rotate. Based on the signal plan's turnout position and the actual installation of the turnout switch mechanism (left- or right-hand), the simulator determines whether the current motor rotation direction will cause the switch to switch to the control position. If the opposite direction is achieved, the turnout will reverse. The indoor system will modify the phase sequence of the three-phase power supply at the output of the phase-failure protector DBQ in the turnout control circuit. If the motor rotation direction is sufficient to cause the turnout switch mechanism to switch, the indoor phase-failure protector DBQ will cease output after 13 seconds, connecting the turnout indication circuit. The simulator then connects the rectifier box to the indication circuit at the terminal cable box via X6 and X7. If the indoor positioning indicates that the relay is on or the reverse position indicates that the relay is energized (depending on the operation), it proves that the circuit is normal and the rectifier box is working properly. If the indoor positioning indicates that the relay is on or the reverse position indicates that the relay is energized, measure the voltage across the relay coil. If there is a DC voltage with opposite polarity, it proves that the rectifier box is installed in reverse and the wiring needs to be modified. If the indoor positioning indicates that the relay is not on or the reverse position indicates that the relay is not energized, measure the voltage across the relay coil. If there is only AC voltage and no DC voltage, it proves that the rectifier box is broken down.

[0033] It should be noted that the order of the above-mentioned embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. The above-mentioned embodiments of the present invention are described. The embodiments of the present invention are described in a progressive manner. The same and similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A railway three-phase AC switch simulator, characterized in that: The simulator includes: electronic relay, three-phase AC asynchronous motor, phase sequence detection unit, resistor and capacitor plug-in, non-self-resetting switch, DC-DC adjustable boost module and TYPE-C port charging mobile power supply; The switch machine simulator includes 7 output terminals, namely X1, X2, X3, X4, X5, X6 and X7. The output terminals corresponding to the electronic relay are X2, X3, X4, X5, X6 and X7, and the output terminal corresponding to the three-phase AC asynchronous motor is X1. Phases A, B, and C of the three-phase AC asynchronous motor are connected in parallel with the phase sequence detection unit respectively; the resistor and capacitor plug-ins are connected in parallel with phases A, B, and C of the three-phase AC asynchronous motor respectively; The TYPE-C port charging mobile power supply is connected to the DC-DC adjustable boost module; the DC-DC adjustable boost module is respectively connected to the electronic relay and the non-self-resetting switch.

2. A railway three-phase AC switch simulator according to claim 1, characterized in that: The switch machine simulator is connected to the outdoor terminal cable box through a total of 7 output terminals X1, X2, X3, X4, X5, X6 and X7. The outdoor terminal cable box includes two parts, namely the switch machine control circuit and the rectifier box.

3. A railway three-phase AC switch simulator according to claim 2, characterized in that: The electronic relay is also connected to the rectifier box via output terminals X6 and X7.

4. A railway three-phase AC switch simulator according to claim 1, characterized in that: Phase A of the three-phase AC asynchronous motor is connected to the outdoor terminal cable box via the output terminal X1, and phases B and C are connected to the electronic relay.

5. A railway three-phase AC switch simulator according to claim 1, characterized in that: The TYPE-C port charging mobile power supply provides a DC 24V working power supply to the electronic relay and the non-self-resetting switch simultaneously through a DC-DC adjustable boost module.

6. A railway three-phase AC switch simulator according to claim 1, characterized in that: The X1, X2, X3, X4 and X5 output terminals are also connected to the phase failure protector through indoor 1DQJF and 2DQJ relay circuits.

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