A railway locomotive brake pipe anti-leakage detection device

Abstract

The utility model relates to railway locomotive technical field discloses a kind of railway locomotive brake pipe anti-leakage detection devices, including steel base and mounting piece, the steel base top two sides are respectively welded with mounting piece, the mounting piece top is all fixed with bottom foot, the bottom foot and mounting piece between screw have fastening nut, the bottom foot top is welded with device ontology, pipeline connector, pressure sampling sensor, AD conversion module, communication module, data record storage module, power module and MCU microprocessor are set in the device ontology backplate and are provided with wall groove. The utility model is provided with steel base, slot, rope hole, guide pillar and fixed sheet, brake pipe can be kept stable fixed state when installing, with movable space simultaneously, play buffering effect when vibration or thermal expansion and cold contraction occurs in locomotive operation process, reduce the damage caused by pulling, deviation or rigid connection fracture of pipe, play the function of protecting pipe.

Description

Technical Field

[0001] This utility model relates to the field of railway locomotive technology, specifically to a railway locomotive brake pipeline leak prevention detection device. Background Technology

[0002] The braking system of railway locomotives is driven by compressed air. The brake pipeline connects the main air cylinder to various valve bodies and braking devices. If the pipeline leaks, it will directly cause the pressure inside the pipeline to drop. This can result in a weakened braking effect or even brake failure, which is especially dangerous when the train is running at high speed or on long slopes, posing a serious safety risk.

[0003] Currently, there are two main methods for inspecting locomotive brake lines. One is to have maintenance personnel manually inspect the lines during maintenance or preparation work to determine if there is any leakage. This method is time-consuming and labor-intensive, and can only be carried out when the locomotive is stopped. The other method is to observe the pressure changes in the main pipeline or air cylinder using pressure gauges on the locomotive and rely on the operator's experience to determine if there is any leakage. This method can only reflect the overall pressure level and cannot detect localized minor leaks in a timely manner.

[0004] Because existing detection methods rely on manual experience or low-precision instruments, they generally have the drawback of not being able to sample pipeline pressure in real time and provide rapid alarms. When there is slow pressure relief or sudden pressure drop, it is often only detected when the problem worsens, lacking proactive early warning capabilities and making it difficult to ensure the safe operation of locomotives in a timely manner.

[0005] Therefore, a leak detection device for railway locomotive brake lines is needed to improve the reliability of railway locomotive braking systems. Utility Model Content

[0006] The purpose of this invention is to provide a leak detection device for railway locomotive brake pipelines, in order to solve the problem mentioned in the background art of not being able to sample pipeline pressure in real time and provide rapid alarm.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a railway locomotive brake pipeline leak prevention detection device, comprising a steel base and mounting plates. Mounting plates are welded to both sides of the top of the steel base, and base feet are fixed to the top of each mounting plate. Fastening nuts are screwed between the base feet and the mounting plates. A device body is welded to the top of the base feet. The device body contains a pipeline connector, a pressure sampling sensor, an AD conversion module, a communication module, a data recording and storage module, a power supply module, and an MCU microprocessor. A wall groove is formed on the back plate of the device body, and a fixing plate is embedded in the wall groove. A connecting bolt is fixedly connected between the fixing plate and the wall groove. A guide post is rotatably connected to the front end of the fixing plate. Through slots are formed on both sides of the steel base, and multiple sets of rope holes are arranged around the through slots.

[0008] As a further technical solution of this utility model, four sets of rope holes are respectively arranged around the groove, and the rope holes are arranged in a ring around the groove.

[0009] As a further technical solution of this utility model, the guide post has an "I" shaped structure, and the rotatable range of the guide post at the front end of the fixing plate is 360° in the vertical direction.

[0010] As a further technical solution of this utility model, a front panel is installed at the front end of the device body, and a waterproof screw is fixedly connected between the front panel and the device body.

[0011] As a further technical solution of this utility model, a liquid crystal display screen is provided on the front panel, and an instrument panel is provided on the left side of the liquid crystal display screen.

[0012] As a further technical solution of this utility model, the top left side and left side wall of the device body are respectively provided with an outlet and an inlet. The outlet and inlet penetrate the device body and are connected to the pipeline connector. Both the outlet and inlet are fitted with sealing sleeves.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by incorporating a pipeline connector, pressure sampling sensor, AD conversion module, communication module, data recording and storage module, power supply module, and MCU microprocessor, the system can perform high-frequency acquisition and real-time analysis of the pressure in the brake pipeline. When abnormal situations such as slow pressure loss or rapid pressure drop occur, the system will immediately judge and output an alarm signal, thereby effectively reducing the decrease in braking performance caused by leakage in the brake pipeline and improving the safety and reliability of railway locomotive operation. At the same time, the device body is provided with wiring space, which can keep the brake pipeline in a stable and fixed state during installation, while also providing room for movement. This acts as a buffer when vibration or thermal expansion and contraction occurs during locomotive operation, reducing damage to the pipeline caused by pulling, displacement, or rigid connection breakage, and protecting the pipeline. Attached Figure Description

[0014] Figure 1 This is a frontal three-dimensional structural diagram of the present invention; Figure 2 This is a front view cross-sectional structural diagram of the device body of this utility model; Figure 3 This is a schematic diagram of the rear view of the fixing plate structure of this utility model; Figure 4 This is a front view structural diagram of the steel base of this utility model.

[0015] In the diagram: 1. Device body; 2. Front panel; 3. LCD screen; 4. Waterproof screw; 5. Foot; 6. Outlet; 7. Sealing sleeve; 8. Inlet; 9. Instrument panel; 10. Fastening nut; 11. Mounting plate; 12. Rope hole; 13. Through groove; 14. Steel base; 15. Guide post; 16. Fixing plate; 17. Wall groove; 18. Connecting bolt; 101. Pipe connector; 102. Pressure sampling sensor; 103. AD conversion module; 104. Communication module; 105. Data recording and storage module; 106. Power supply module; 107. MCU microprocessor. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-4 This utility model provides an embodiment of a railway locomotive brake pipeline leak prevention detection device, comprising a steel base 14 and mounting plates 11. Mounting plates 11 are welded to both sides of the top of the steel base 14. Each mounting plate 11 has a base foot 5 fixed to its top. A fastening nut 10 is screwed between the base foot 5 and the mounting plate 11. A device body 1 is welded to the top of the base foot 5. The device body 1 contains a pipeline connector 101, a pressure sampling sensor 102, an AD conversion module 103, a communication module 104, a data recording and storage module 105, a power supply module 106, and an MC. U microprocessor 107; the back plate of the device body 1 has a wall groove 17, a fixing plate 16 is embedded in the wall groove 17, a connecting bolt 18 is fixedly connected between the fixing plate 16 and the wall groove 17, a guide post 15 is rotatably connected to the front end of the fixing plate 16, the steel base 14 has through grooves 13 on both sides, and multiple sets of rope holes 12 are arranged around the through grooves 13. There are four sets of rope holes 12 on the periphery of the through grooves 13, and the rope holes 12 are arranged in a ring around the through grooves 13. The guide post 15 has an "I" structure, and the rotatable range of the guide post 15 at the front end of the fixing plate 16 is 360° in the vertical direction. Specifically, such as Figure 1 , Figure 3 and Figure 4As shown, the entire testing device is installed on the locomotive chassis near the area where the brake lines are laid. The steel base 14 has through slots 13 on both sides to allow the brake lines to pass through and be fixed inside the device structure. Multiple sets of rope holes 12 are arranged in a ring around the through slots 13, with three in each set. Nylon strapping is used to wrap and fix the lines along the rope holes 12, keeping the arrangement stable during vehicle operation. During maintenance, the strapping can be quickly cut to release the lines, improving the convenience of maintenance. The through slots 13 and the guide post 15 form a movable guide space. The front end of the guide post 15 can rotate on the fixed plate 16, giving the lines passing through the through slots 13 a certain amount of room to move. When there is thermal expansion and contraction or vibration and displacement during locomotive operation, it can play a flexible buffering role, reducing the damage to the lines or the breakage of rigid connections.

[0018] The device body 1 has an outlet 6 and an inlet 8 on the top left side and left side wall, respectively. The outlet 6 and inlet 8 pass through the device body 1 and are connected to the pipeline connector 101. Both the outlet 6 and inlet 8 are fitted with sealing sleeves 7. Furthermore, the pressure sampling sensor 102 is a KELLER 21Y, the AD conversion module 103 is an ADS1115 with 16-bit resolution and a communication interface, capable of stably converting the analog signal output by the sensor into a digital signal, the communication module 104 is an RS485 bus communication module with anti-interference design, capable of stable communication with the locomotive main control system, the data recording and storage module 105 uses an industrial-grade MicroSD memory card module with a capacity of 8GB, supports power failure protection, and is suitable for long-term recording of operating data, the power supply module 106 is an LM2596 DC-DC step-down module with an input range of 12~36V and a stable output of 5V, which powers the MCU and sensors and can be connected to the locomotive battery or photovoltaic power supply, and the MCU microprocessor 107 is an STM32F407 with a main frequency of 168MHz, built-in multi-channel ADC interface and communication interface, capable of high-speed signal processing, logic judgment and data storage control; Specifically, such as Figure 1 and Figure 2As shown, the pipe connector 101 is connected to the upper outlet 6 and the side wall inlet 8 for connecting to the main air cylinder pipe of the railway locomotive brake. The pipe openings are all fitted with sealing sleeves 7 to isolate dust and rainwater. During the operation of the device, the pressure sampling sensor 102 samples the air pressure of the connected pipe at high frequency and outputs an analog signal to the AD conversion module 103. This module converts the analog signal into a digital signal and sends it to the MCU microprocessor 107. The MCU microprocessor 107 has multiple sets of alarm judgment logic written in it. When it detects that the pressure value changes in a unit time that does not conform to the normal braking curve, such as slow descent or rapid drop, it will trigger the communication module 104 to send an alarm signal, upload it to the locomotive main control system, and simultaneously write the event data to the data recording and storage module 105 for subsequent maintenance analysis and operation diagnosis. The power supply module 106 can be connected to a photovoltaic panel for power supply or be powered by the locomotive battery to ensure that the device still has short-term operation and data retention capabilities in the event of power failure or shunting standby state.

[0019] A front panel 2 is installed at the front end of the device body 1. Waterproof screws 4 are fixedly connected between the front panel 2 and the device body 1. An LCD screen 3 is installed on the front panel 2. An instrument panel 9 is installed on the left side of the LCD screen 3. Specifically, such as Figure 1 and Figure 3 As shown, the upper end of the device body 1 is connected to the mounting plate 11 via the base 5. The mounting plate 11 is welded to the steel base 14. The base 5 and the mounting plate 11 are connected by fastening nuts 10, which is convenient for disassembly and assembly. A front panel 2 is provided at the front of the device. The front panel 2 is fixed to the device body 1 with waterproof screws 4, which plays a role in sealing and protection. An LCD screen 3 and an instrument panel 9 are provided on the surface of the front panel 2 to display information such as the current pipeline air pressure, historical pressure curve, and data recording status, which is convenient for operators to quickly interpret in outdoor environments. A wall groove 17 is provided on the back of the device. A rotatable fixing plate 16 is embedded in the wall groove 17. The fixing plate 16 is connected to the device body 1 via connecting bolts 18, without the need to remove the steel base 14, saving labor and time and improving the daily maintenance efficiency of the locomotive depot.

[0020] Furthermore, the computer software involved in the hardware carriers such as the pipe connector 101, pressure sampling sensor 102, AD conversion module 103, communication module 104, data recording and storage module 105, power supply module 106, and MCU microprocessor 107 in the technical solution is software technology known to those skilled in the art. It is merely applied to the aforementioned hardware carriers. In other words, the computer software involved in this technical solution is an indispensable technical feature for solving the aforementioned technical problem, constituting a necessary technical feature for solving the technical problem of this application, but it is not a differentiating technical feature for solving the technical problem, nor is it a point of technical improvement. The applicant has not made any technical improvements to the computer software involved in the aforementioned related hardware carriers, nor is it a key technical point of the invention.

[0021] Working principle: The main brake cylinder pipeline is connected to the device body 1 through outlet 6 and inlet 8. Pipe connector 101 forms a sealed connection with the external sealing sleeve 7, isolating external dust and rainwater and ensuring the stability of the sampling environment. Pressure sampling sensor 102 performs high-frequency sampling of the air pressure in the pipeline. The analog signal output by the sensor is sent to AD conversion module 103, and after digital processing, it is input to MCU microprocessor 107. MCU microprocessor 107 has a preset normal pressure curve and judgment logic for the braking system. When a pipeline pressure change is detected that does not match the standard curve, such as slow pressure loss in non-braking state or abnormal rapid drop during braking, it can be determined that there may be a leak in the pipeline. When the above-mentioned abnormal situation occurs, the MCU microprocessor 107 immediately outputs control commands, driving the communication module 104 to upload the alarm signal to the locomotive main control system. At the same time, it triggers the LCD display 3 and the instrument panel 9 to provide information prompts, enabling operators to know the pipeline operating status in a timely manner. The relevant data is also stored in the data recording and storage module 105 for subsequent maintenance analysis and operation diagnosis. The power supply module 106 provides a stable power supply to ensure that the device can maintain monitoring and recording functions in the locomotive operation, shunting, or power outage states. During locomotive operation, the brake pipeline pressure is detected in real time to detect potential leakage hazards in a timely manner, reduce the risk of brake performance degradation or failure due to air leakage, and improve the operational safety and reliability of railway locomotives.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A leak detection device for railway locomotive brake lines, comprising a steel base (14) and a mounting plate (11), characterized in that: The steel base (14) has mounting plates (11) welded to both sides of its top end. Each mounting plate (11) has a base foot (5) fixed to its top end. A fastening nut (10) is screwed between the base foot (5) and the mounting plate (11). The device body (1) is welded to the top of the base foot (5). The device body (1) is provided with a pipeline connector (101), a pressure sampling sensor (102), an AD conversion module (103), a communication module (104), a data recording and storage module (105), a power supply module (106), and an MCU microprocessor (107). The back plate of the device body (1) has a wall groove (17), a fixing plate (16) is embedded in the wall groove (17), a connecting bolt (18) is fixedly connected between the fixing plate (16) and the wall groove (17), a guide post (15) is rotatably connected to the front end of the fixing plate (16), and through grooves (13) are respectively opened on both sides of the steel base (14), and multiple sets of rope holes (12) are arranged around the through grooves (13).

2. The railway locomotive brake pipeline leak prevention detection device according to claim 1, characterized in that: The rope holes (12) are arranged in four sets around the groove (13), and the rope holes (12) are arranged in a ring around the groove (13).

3. The railway locomotive brake pipeline leak prevention detection device according to claim 1, characterized in that: The guide post (15) has an "I" shape and the rotatable range of the guide post (15) at the front end of the fixing plate (16) is 360° in the vertical direction.

4. The railway locomotive brake pipeline leak prevention detection device according to claim 1, characterized in that: The front panel (2) is installed at the front end of the device body (1), and a waterproof screw (4) is fixedly connected between the front panel (2) and the device body (1).

5. A railway locomotive brake pipeline leak prevention detection device according to claim 4, characterized in that: A liquid crystal display screen (3) is provided on the front panel (2), and an instrument panel (9) is provided on the left side of the liquid crystal display screen (3).

6. The railway locomotive brake pipeline leak prevention detection device according to claim 1, characterized in that: The device body (1) has an outlet (6) and an inlet (8) on the top left side and left side wall, respectively. The outlet (6) and inlet (8) penetrate the device body (1) and are connected to the pipeline connector (101). The outlet (6) and inlet (8) are both fitted with sealing sleeves (7).

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