Coupling waterway pipeline emptying device for rail flaw detection car

Abstract

The utility model belongs to the technical field of rail flaw detection cars, and particularly relates to a rail flaw detection car coupling waterway pipeline emptying device which comprises a wind source device, the wind source device is connected with a PLC control module through a wire, and the PLC control module is connected with a waterway control box through a wire. One side of the waterway control box is provided with a water pipe, one side of the air source device is connected with an electromagnetic valve, the other end of the electromagnetic valve is connected with a through pipe, and the other end of the through pipe is connected with a one-way valve. In addition, the workload of an operator can be reduced, and the efficiency can be improved. And meanwhile, freezing blockage caused by untimely switching of the anti-freezing solution due to human subjective factors is reduced, the consumption of the anti-freezing solution is reduced, and the detection cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of rail flaw detection vehicles, specifically relating to a rail flaw detection vehicle coupled with a water pipeline emptying device. Background Technology

[0002] With the rapid development of railway transportation, the mileage of railway construction in my country is increasing daily. Consequently, the demand for railway transportation safety and rail inspection is also rising. Large ultrasonic rail flaw detectors, as the mainstream high-speed flaw detection equipment in China, play a crucial role in ensuring the safe operation of railways. Rail inspection equipment that uses ultrasonic transmission as its basic working principle requires the use of coupling water as a propagation medium to expel air from the probe wheel and the rail surface, allowing ultrasound to smoothly enter the rail's interior. Therefore, the state of the coupling water outlet is particularly important for the ultrasonic inspection results of the flaw detector.

[0003] The existing control coupling water spray system is responsible for uniformly spraying coupling water onto the rail surface during flaw detection, ensuring good coupling between the probe wheel and the rail. Wheel flange noise reduction nozzles uniformly spray coupling water onto the wheelset surface, reducing friction noise between the wheelset and the rail, and minimizing noise interference with ultrasonic flaw detection; this system is typically activated when traversing curves. Probe wheel monitoring cameras monitor the status of the probe wheels under the vehicle and the direction of travel, with monitoring positions for left front, left rear, right front, and right rear. Probe wheel monitoring cleaning nozzles clean the cameras to prevent mud buildup. The current technical solution involves installing an antifreeze tank; after detection stops, the system switches to antifreeze, and a water pump pumps antifreeze into the coupling water pipes to drain the coupling water and prevent freezing. Currently, there is no separate control function for the camera cleaning pipeline, antifreeze filling function for the wheel flange noise reduction pipeline, or pipeline liquid emptying function.

[0004] However, the existing coupling water pipeline of the flaw detection vehicle has the following problems due to the actual application environment and installation location:

[0005] The under-vehicle coupling water pipeline has many branches. To ensure proper installation, the pipeline is often fixed to the under-vehicle mechanical structure, resulting in tortuous lines and causing coupling water to deposit and form scale. In sub-zero winter conditions, under-vehicle insulation often fails to achieve ideal results, and coupling water freezing and clogging frequently occurs. Wheel flange water is sprayed onto the wheelsets to reduce noise when navigating curves. Frequent use and high consumption during inspections, coupled with the lack of a separate antifreeze switching system, mean that in winter, if the antifreeze is not switched in time, it often freezes due to the coupling water, rendering it ineffective. Furthermore, frequent antifreeze switching significantly increases the need for personnel awareness and antifreeze demand. Utility Model Content

[0006] The purpose of this invention is to provide a device for clearing the coupling water pipeline of a rail flaw detection vehicle, aiming to solve the problem of multiple branching of the coupling water pipeline under the vehicle in existing technologies. To ensure installation on the vehicle, the pipeline is often fixed to the mechanical structure under the vehicle, resulting in tortuous pipelines and causing coupling water to deposit and form scale. In sub-zero winter conditions, under-vehicle insulation often fails to achieve ideal results, and coupling water freezing and blockage frequently occurs. Wheel flange water is sprayed onto the wheelsets to reduce noise when navigating curves. Frequent use and high consumption of coupling water during inspections, coupled with the lack of a separate antifreeze switching mechanism, mean that in winter, if the antifreeze is not switched in time, it often freezes due to the coupling water, rendering it ineffective. Furthermore, frequent antifreeze switching exponentially increases the need for personnel awareness and antifreeze demand.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rail flaw detection vehicle coupled with a water pipeline emptying device, including a wind source device, wherein the wind source device is connected to a PLC control module via a wire, and the PLC control module is connected to a water circuit control box via a wire;

[0008] A water pipe is installed on one side of the water circuit control box, and a solenoid valve is connected to one side of the air source device. The other end of the solenoid valve is connected to a through pipe, and the other end of the through pipe is connected to a one-way valve.

[0009] As a preferred embodiment of the rail flaw detection vehicle coupling water pipeline emptying device of this utility model, the air source device includes a first quick connector, a switch valve, an overflow valve, an air cylinder, a pressure switch, a pressure reducing valve, and a second quick connector, with the air cylinder located at the center of the air source device.

[0010] As a preferred embodiment of the rail flaw detection vehicle coupling water pipeline emptying device of this utility model, one end of the air cylinder is connected to an overflow valve, the other side of the overflow valve is connected to a switch valve, and the other side of the switch valve is connected to a first quick connector.

[0011] As a preferred embodiment of the rail flaw detection vehicle coupling water pipeline emptying device of this utility model, the air cylinder is connected to a pressure switch on one side relative to the overflow valve, the pressure switch is connected to a pressure reducing valve on the other side, and the pressure reducing valve is connected to a second quick connector on the other side.

[0012] As a preferred embodiment of the rail flaw detection vehicle coupling water pipeline emptying device of this utility model, a nozzle is connected to the other side of the one-way valve, and one end of the water pipe relative to the water control box is connected to the through pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention enables automatic gas-liquid switching within pipelines, promptly draining coupled water and preventing freezing and scale buildup. It also reduces operator workload and improves efficiency. Furthermore, it minimizes the risk of freezing and blockage caused by delayed antifreeze switching due to human error, reducing antifreeze consumption and lowering testing costs. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of the coupling water pipeline emptying device of this utility model;

[0017] Figure 2 This is a schematic diagram of the water pipe connection structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the device flow structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the principle structure of the air source device of this utility model;

[0020] Figure 5 This is a schematic diagram of the gas-liquid switching principle structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the PLC control principle structure of this utility model.

[0022] In the diagram: 1. Air source device; 2. PLC control module; 3. Water circuit control box; 31. Water pipe; 4. Check valve; 5. Nozzle; 6. Solenoid valve; 7. Through pipe; T1. First quick connector; P2. Switch valve; 12. Overflow valve; P1. Air cylinder; S1. Pressure switch; 11. Pressure reducing valve; T2. Second quick connector. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6The present invention provides the following technical solution: a rail flaw detection vehicle coupled with a water pipeline emptying device, including a wind source device 1, a PLC control module 2 connected to the wind source device 1 by a wire, and a water control box 3 connected to the PLC control module 2 by a wire.

[0025] A water pipe 31 is installed on one side of the water circuit control box 3, and a solenoid valve 6 is connected to one side of the air source device 1. The solenoid valve 6 receives the control signal from the PLC to open and close the solenoid valve 6. The other end of the solenoid valve 6 is connected to a through pipe 7, and the other end of the through pipe 7 is connected to a one-way valve 4. The one-way valve 4 is used to prevent backflow, thereby realizing the normal switching between coupling water and compressed air.

[0026] Preferably, the air source device 1 includes a first quick connector T1, a switching valve P2, an overflow valve 12, an air cylinder P1, a pressure switch S1, a pressure reducing valve 11, and a second quick connector T2, with the air cylinder P1 located at the center of the air source device 1.

[0027] It is worth noting that the air source device 1 mainly provides compressed air, with the air source preferentially supplied by the compressed air on the train. The impact on the train can be reduced through the overflow valve 12 and the switching valve P2 structure to ensure a reliable compressed air source. Alternatively, an air compressor can be selected. The pressure regulating valve and pressure switch enable controllable compressed air supply. In addition, the PLC control module 2 collects pressure signals to confirm whether the cleaning device can be started normally. By receiving the stop signals from the coupling water pump, the wheel flange water solenoid valve, and the camera cleaning, it automatically controls the opening of the relevant pipeline solenoid valves to achieve pipeline purging.

[0028] Preferably, one end of the air cylinder P1 is connected to an overflow valve 12, the other side of the overflow valve 12 is connected to a switching valve P2, and the other side of the switching valve P2 is connected to a first quick connector T1.

[0029] It is worth noting that: both the first quick connector T1 and the second quick connector T2 are quick connectors for convenient connection and disconnection with the existing pipelines of the train, achieving convenient and selective installation; through the use of the switch valve P2, the air source of the train to the air cylinder P1 can be cut off and opened. In addition, the overflow valve 12 maintains the train within a stable range to prevent the train pressure from changing due to the operation of the cleaning device, thereby affecting the normal operation of the train. The air cylinder P1 stores compressed air for use in the cleaning device to discharge coupling water.

[0030] Preferably, the air cylinder P1 is connected to a pressure switch S1 on one side relative to the overflow valve 12, the pressure switch S1 is connected to a pressure reducing valve 11 on the other side, and the pressure reducing valve 11 is connected to a second quick connector T2 on the other side.

[0031] It is worth noting that the pressure reducing valve 11 can adjust the pressure entering the cleaning device.

[0032] Preferably, a nozzle 5 is connected to the other side of the one-way valve 4, and one end of the water pipe 31 relative to the water circuit control box 3 is connected to the through pipe 7.

[0033] The working principle of this utility model is as follows: S1 is a normally open mechanical pressure switch. When the compressed air pressure reaches the set pressure, the pressure switch closes. After receiving the signal, the PLC control unit can start working to ensure that the device works normally and prevent the coupling water from not being discharged in time due to insufficient air pressure. Figure 4 The following is an introduction to PLC automatic control: Under the condition that the air pressure meets the working requirements, an output signal is sent to the PLC control unit. The PLC control module can then control the operation of the solenoid valve. When the solenoid valve inside the water circuit control box is energized, it outputs a 24V voltage signal to the PLC control module. Figure 4 In the design, X1 energizes the rim solenoid valve and simultaneously outputs a 24V voltage signal to the PLC control module. When the control module receives the output signal, it resets the time relay T1 and controls the internal relay M1 to close. When the X1 rim solenoid valve stops working, the internal relay M1 and the time relay T1 open, and the output signals from Y1 and Y2 control the relays to close. Figure 3 It is known that compressed air flows through solenoid valves Y1 and Y2, check valve F1, and nozzle P3, thereby expelling coupled water from the pipeline along the way. Simultaneously, time relay T1 starts timing; after the set time is reached, T1 closes, Y1 and Y2 stop outputting signals, solenoid valves Y1 and Y2 open, and the operation ends. This achieves pipeline antifreeze and prevents scale buildup.

[0034] It is worth noting that, under the same control principle, the coupling water of the camera cleaning pipeline and the probe coupling pipeline is discharged respectively.

[0035] Under manual control of pipeline purging, ensure that the relevant solenoid valves in the water circuit control box are not energized, force X2 to close and output a control signal to the PLC control module, control the solenoid valve of the cleaning device to close, and perform a manual purging test.

[0036] The following annotations are also provided:

[0037] P3 - Ball valve, Y1 - Normally closed solenoid valve, Y2 to Y5 - Normally closed air valve switching valve group, F1 to F12 - Check valve, T5 to T10 - Coupling water quick connector, P3 to P8 - Nozzle.

[0038] When certain conditions are met, the Y1 pilot solenoid valve opens to supply compressed air to the downstream.

[0039] The Y2-Y5 solenoid valve assembly, under the control of the PLC control module, realizes the opening and closing of the valve assembly and realizes the connection and disconnection of the wheel flange pipeline, cleaning pipeline, probe coupling pipeline and air circuit.

[0040] The F1-F12 check valves prevent reverse flow of gas and liquid from damaging the solenoid valve and water pump.

[0041] P3-P8 can represent the front, middle, and rear probe wheel coupling water nozzles, the wheel rim noise reduction coupling water nozzles, and the camera cleaning nozzles, respectively.

[0042] The T5-T10 quick-connect coupling water connector enables rapid connection and disconnection with existing ultrasonic coupling devices, making it suitable for various ultrasonic coupling water devices used in rail flaw detection.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water pipeline emptying device coupled to a rail flaw detection vehicle, including an air source device (1), characterized in that: The air source device (1) is connected to a PLC control module (2) via a wire, and the PLC control module (2) is connected to a water circuit control box (3) via a wire. A water pipe (31) is installed on one side of the water circuit control box (3), a solenoid valve (6) is connected to one side of the air source device (1), a through pipe (7) is connected to the other end of the solenoid valve (6), and a one-way valve (4) is connected to the other end of the through pipe (7).

2. The rail flaw detection vehicle coupled water pipeline emptying device according to claim 1, characterized in that: The air source device (1) includes a first quick connector (T1), a switch valve (P2), an overflow valve (12), an air cylinder (P1), a pressure switch (S1), a pressure reducing valve (11), and a second quick connector (T2). The air cylinder (P1) is located at the center of the air source device (1).

3. The rail flaw detection vehicle coupled water pipeline emptying device according to claim 2, characterized in that: One end of the air cylinder (P1) is connected to an overflow valve (12), the other side of the overflow valve (12) is connected to a switch valve (P2), and the other side of the switch valve (P2) is connected to a first quick connector (T1).

4. The rail flaw detection vehicle coupled water pipeline emptying device according to claim 2, characterized in that: The air cylinder (P1) is connected to a pressure switch (S1) on one side relative to the overflow valve (12), and a pressure reducing valve (11) is connected to the other side of the pressure switch (S1). A second quick connector (T2) is connected to the other side of the pressure reducing valve (11).

5. The rail flaw detection vehicle coupled water pipeline emptying device according to claim 1, characterized in that: The other side of the one-way valve (4) is connected to a nozzle (5), and one end of the water pipe (31) relative to the water circuit control box (3) is connected to the through pipe (7).

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