CR400AF type motor train unit air supply detection device

Abstract

The utility model provides a CR400AF type motor train unit air supply detection device, and relates to the technical field of motor train unit application maintenance tools. The device comprises a box body, an air source input interface, a filtering pressure reducing valve, a proportional valve, a pressure transmitter, an output interface, a power supply module, a touch screen, a PLC (Programmable Logic Controller), a USB (Universal Serial Bus) data interface, an air source air pipe, a power supply switch and a power supply connecting wire, an air source input interface, a filtering pressure reducing valve, a proportional valve, a pressure transmitter and an output interface are arranged in the box body and are sequentially mounted on an air source air pipe; the power supply device is connected with the power switch, the PLC, the touch screen, the proportional valve and the pressure transmitter through power lines; the PLC is connected with the touch screen, the pressure transmitter, the proportional valve and the data storage output interface through signal lines; precise control output of nine kinds of wind pressure is achieved through a proportional valve, wind pressure detection and display are achieved through a PLC and a touch screen, and reading output of detection data is achieved through a data interface.

Description

Technical Field

[0001] The present application relates to the technical field of EMU operation and maintenance tools, and specifically to a CR400AF EMU air supply detection device. Background Art

[0002] The EMU needs to provide air pressure during the braking test and the rescue conversion device function test. In particular, when doing the rescue conversion device test, 9 kinds of constant pressures such as 600kpa, 540kpa, 520kpa, 500kpa, 480kpa, 460kpa, 440kpa, 420kpa and 380kpa are required. However, the domestic EMU depot only provides 600kpa of air pressure, which cannot meet the test requirements. In the active rescue mode, it is necessary to detect whether the output pressure is normal. The original manual adjustment method using a pressure reducing valve and an air pressure gauge is inconvenient and time-consuming. Summary of the invention

[0003] The problem solved by the utility model is to filter and stabilize the input fixed wind pressure, automatically output 9 levels of fixed pressure, and perform pressure detection and display, while recording the detection data, thereby solving the inconvenience of use, the time-consuming manual adjustment, and the existence of a certain amount of error problems, and realizing the electronic output of the detection data.

[0004] The technical scheme adopted by the utility model is: a CR400AF type EMU air supply detection device, comprising a box body, in which an air source input interface, a filter pressure reducing valve, a proportional valve, a pressure transmitter, an output interface, a power module, a touch screen and a PLC programming controller, a USB data interface and an air source air duct are arranged; the air source input interface, the filter pressure reducing valve, the proportional valve, the pressure transmitter and the output interface are installed on the air source air duct in sequence; the proportional valve, the pressure transmitter and the USB data interface are connected to the touch screen and the PLC programming controller through a communication line; the proportional valve, the pressure transmitter, the touch screen and the PLC programming controller are connected to the power supply device through a power line.

[0005] The beneficial effects and features of the utility model are: 1. A CR400AF type EMU air supply detection device of the utility model controls the solenoid valve through PLC, accurately performs pressure control output, quickly provides 9 kinds of air sources required for the EMU rescue conversion device test and detects and displays its output air pressure.

[0006] 2. The utility model provides a CR400AF EMU air supply detection device, which can record detection data for tracing.

[0007] 3. The utility model of a CR400AF EMU air supply detection device can reduce labor and save maintenance and test time. The use of the device can reduce the operating time by 10 minutes per unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the principle of a preferred embodiment of the utility model; Figure 2 It is a schematic plan view of the overall structure of a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0009] The following is a clear and complete description of the technical solution of the utility model in conjunction with the accompanying drawings: Figure 1 to Figure 2 A CR400AF type EMU air supply detection device, wherein the box body 11 is provided with an air source input interface 1, a filter pressure reducing valve 2, a proportional valve 3, a pressure transmitter 4, an output interface 5, a power module 6, a touch screen and a PLC programming controller 7, a USB data interface 8 and an air source duct 9, and a power switch 10; the air source input interface 1, the filter pressure reducing valve 2, the proportional valve 3, the pressure transmitter 4, and the output interface 5 are sequentially installed on the air source duct 9; the proportional valve 3, the pressure transmitter 4, and the USB data interface 8 are connected to the touch screen and the PLC programming controller 7 through a communication line, and the proportional valve 3, the pressure transmitter 4, the touch screen and the PLC programming controller 7 are connected to the power supply device and the power switch through a power line.

[0010] The input interface 1 and the output interface 5 are quick connectors, which facilitate the connection and output of the wind source.

[0011] The filter pressure reducing valve 2 is composed of a filter, a valve seat, a valve plate, a diaphragm, and a 600kpa given spring. The filter is provided with a filter screen and a water accumulation device, and a pressure relief hole is provided for overpressure protection. It is used for input air filtration and pressure stabilization. The pressure reducing valve reduces the inlet pressure to a certain required outlet pressure by adjustment, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. The pressure reducing valve is a throttling element with variable local resistance, that is, by changing the throttling area, the flow rate and the kinetic energy of the fluid are changed, resulting in different pressure losses, thereby achieving the purpose of pressure reduction. Relying on the adjustment of the control and regulation system, the fluctuation of the pressure behind the valve is balanced with the spring force, so that the pressure behind the valve is kept constant within a certain error range.

[0012] The proportional valve 3 is an electromagnetic proportional valve. The proportional electromagnet converts the input current signal into a force and displacement mechanical signal output, thereby controlling parameters such as pressure, flow and direction. The proportional valve controls the 600Kpa wind pressure to achieve rapid changes through the input analog signal, outputs the corresponding level of wind pressure to the EMU, and applies the corresponding level of braking force.

[0013] The pressure transmitter 4 detects the pressure value and converts it into an electrical signal which is input to the PLC controller for storage and display.

[0014] The power module 6 includes a power line, a lithium battery (preferably 5200mA), and a power switch.

[0015] The touch screen and PLC programming controller integrate program setting, data processing and display; the internal program of the integrated programmable controller performs the corresponding analog output according to the preset value of the touch screen, and sends the analog signal to the proportional valve 3 through the wire, and reads the pressure value of the pressure transmitter 4 for data storage and display. Since the touch screen and programmable controller are integrated, the touch screen and the programmable controller do not need additional communication lines and protocols, and communication can be achieved only by internal settings.

[0016] The box body 11 is also provided with a box cover, which is hingedly mounted on the edge of the box body to protect the equipment inside the box body. Example

[0017] Rescue mode: According to the instructions for use, connect the device wind source input interface 1 to the wind source, and connect the output interface 5 to the EMU rescue conversion device. Through the setting of relevant modes on the touch screen, when the level control page is selected, enter the corresponding level mode (running position, B1-B7 position, fast position, UB position), click the level, and output the corresponding wind pressure to the EMU rescue conversion device. The EMU rescue conversion device converts the wind pressure signal into an electrical signal and applies the corresponding level of braking force. According to the input wind pressure and braking level, it is judged whether the EMU BP rescue device functions well. Example

[0018] Rescue mode: According to the instructions for use, connect the device output interface 5 to the EMU rescue conversion device, and output the corresponding level of braking by operating the EMU operating handle. The EMU BP rescue device converts the electrical signal into a wind pressure signal, applies the corresponding wind pressure, and detects and displays the wind pressure value through the pressure transmitter 4 to determine whether the EMU BP rescue device functions well.

[0019] Application Effect

[0020] This achievement has been used to good effect in the operation and maintenance process of CR400AF EMUs. It solves the problem of rapid provision of air sources with different constant values, reduces pressure regulating valves and pressure gauges, reduces labor intensity, saves test time, and saves about 25 minutes of inspection time for each standard train.

[0021] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A CR400AF EMU air supply detection device, used to provide a 380kpa-600kpa detection air source for CR400AF EMU test, characterized by: An air source input interface (1), a filter pressure reducing valve (2), a proportional valve (3), a pressure transmitter (4), an output interface (5), a power module (6), a touch screen and a PLC programming controller (7), a USB data interface (8), an air source air duct (9), and a power switch (10) are arranged in the box body (11); the air source input interface (1), the filter pressure reducing valve (2), the proportional valve (3), the pressure transmitter (4), and the output interface (5) are sequentially mounted on the air source air duct (9); the proportional valve (3), the pressure transmitter (4), and the USB data interface (8) are connected to the touch screen and the PLC programming controller (7) via a communication line; the proportional valve (3), the pressure transmitter (4), the touch screen and the PLC programming controller (7) are connected to the power module (6) and the power switch (10) via a power line.

2. A CR400AF EMU air supply detection device according to claim 1, characterized in that: The wind source input interface (1) and the output interface (5) are quick connectors.

3. A CR400AF EMU air supply detection device according to claim 1, characterized in that: The filter pressure reducing valve (2) is composed of a filter, a valve seat, a valve plate, a diaphragm, and a 600 kPa given spring. The filter is provided with a filter screen and a water accumulation device, and a pressure relief hole is provided for overpressure protection.

4. The CR400AF EMU air supply detection device according to claim 1, characterized in that: The proportional valve (3) is an electromagnetic proportional valve, which can output 9 types of air pressure according to the settings of the PLC control machine.

5. The CR400AF EMU air supply detection device according to claim 1, characterized in that: The touch screen and PLC programming controller (7) are integrated with display, control, programming, data storage and output.

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