Air supply system flow measurement and control structure

Abstract

The utility model discloses a kind of air supply system flow measurement and control structure, including host computer, communication board card and the flow pressure transmitter of core. The transmitter is integrated in the same pipeline shell by pressure sensor and detachable flow sensor, cover body is integrated with pressure sensor and processor;The pressure sensing surface of pressure sensor is communicated with the pipeline inner cavity of shell;Maintenance interface is provided on cover body, flow sensor is detachably connected to the processor by the maintenance interface, and data is synchronously collected at the same measurement point, effectively solve the data misalignment problem caused by installation position separation of traditional discrete sensor, significantly improve monitoring accuracy;Its modular structure is more convenient for independent maintenance and replacement of flow sensor.

Description

Technical Field

[0001] This utility model relates to the field of safety equipment technology for locomotives and rolling stock, and specifically to a flow measurement and control structure for an air supply system. Background Technology

[0002] In the rail transit sector, the locomotive's air supply system is a crucial component ensuring the normal operation of train braking, door control, and other pneumatic equipment. The air supply system's flow measurement and control structure is primarily used to monitor the flow rate and pressure of compressed air supplied by the locomotive to the coupled vehicles in real time. By collecting and analyzing air source data, it enables intelligent control of the air compressor, operational status assessment, and fault warning, thereby improving driving safety and system energy efficiency.

[0003] Currently, common air supply monitoring systems typically consist of flow sensors, pressure transmitters, data acquisition units, and communication modules. In practical applications, transmitters often measure flow and pressure separately in a non-integrated manner. Because they are two independent physical components, they cannot be installed at the same point in the pipeline. Traditional air supply monitoring systems are heavy, and a pipeline distance is unavoidable between the flow sensor and the pressure transmitter. The asynchronous pressure and flow values ​​caused by flow resistance reduce the accuracy of status judgment. In addition, the separate flow and pressure transmitters typically require separate cables and connectors to transmit signals and power to the main unit, which also contributes to the complexity of vehicle wiring. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a flow measurement and control structure for an air supply system, thereby improving the problem of inaccurate monitoring caused by the installation of pressure transmitters and flow sensors.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows.

[0006] A flow measurement and control structure for an air supply system includes a main unit, a communication board, and a flow and pressure transmitter. The main unit is electrically connected to the flow and pressure transmitter via a measurement interface, and the main unit is also electrically connected to the communication board via a communication interface. The flow and pressure transmitter includes a housing configured as a pipe structure, with an installation cavity provided on the outer side of the pipe wall of the housing, and the installation cavity is closed by a removable cover. A pressure sensor and a processor are integrated on the cover. The pressure sensing surface of the pressure sensor communicates with the inner cavity of the pipe in the housing. A maintenance interface is provided on the cover, and a flow sensor is detachably connected to the processor through the maintenance interface, with the detection part of the flow sensor extending radially into the inner cavity of the pipe along the housing.

[0007] As a preferred technical solution, a snap-fit ​​sleeve and a snap-fit ​​socket are also provided between the maintenance interface and the flow sensor.

[0008] As a preferred technical solution, the end of the flow and pressure transmitter is provided with a threaded connection part, which is connected to the pipeline to be tested on the locomotive.

[0009] As a preferred technical solution, the cover and the housing are detachably connected by bolts and washers.

[0010] As a preferred technical solution, the host computer also includes a memory.

[0011] As a preferred technical solution, a sealing ring is attached to the edge of the pressure sensor via a groove.

[0012] As a preferred technical solution, the pressure sensor is a spring-type pressure sensor or a diaphragm-type pressure sensor.

[0013] As a preferred technical solution, the host computer is also equipped with a human-computer interaction panel.

[0014] As a preferred technical solution, the host is also equipped with an Ethernet interface, and the Ethernet structure domain locomotive Ethernet switch is electrically connected.

[0015] As a preferred technical solution, the host is also equipped with a data interface, and the data structure realizes data transmission and updating through a data storage medium.

[0016] The advantages and beneficial effects of this utility model are as follows: Integrating the flow sensor and pressure sensor into the same housing allows them to synchronously collect data at the same physical point in the pipeline. This eliminates the problems of airflow pressure drop and measurement asynchrony caused by differences in installation position in traditional discrete sensors, improving the accuracy and reliability of the correlation between flow and pressure data, and providing a more accurate data foundation for the intelligent control of locomotives. The removable cover enables modular packaging of the processor and sensor; the flow sensor can be independently replaced without disassembling the entire pipeline via a maintenance interface, simplifying the maintenance process and reducing the number of external connection points and cables. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the host of this utility model.

[0018] Figure 2 This is one of the structural schematic diagrams of the flow and pressure transmitter of this utility model.

[0019] Figure 3 This is the second schematic diagram of the flow and pressure transmitter of this utility model.

[0020] Figure label: 1-Main unit, 2-Communication board, 3-Measurement interface, 4-Communication interface, 5-Housing, 6-Cover, 7-Processor, 8-Flow sensor, 9-Pressure sensor, 10-Card sleeve, 11-Card socket, 12-Threaded connection, 13-Bolt, 14-Sealing ring, 15-Human machine interface panel, 16-Ethernet interface, 17-Data interface. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0022] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly or implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Please see Figures 1-3 This utility model provides a flow measurement and control structure for an air supply system. The main unit 1 is electrically connected to a flow and pressure transmitter via a measurement interface 3, and to a communication board 2 via a communication interface 4. The flow and pressure transmitter includes a housing 5 constructed as a pipe structure. A cover 6 is located on the outer side of the middle section of the housing. A processor 7 is housed in a cavity within the cover. A flow sensor 8 is detachably connected to the processor from the outer periphery of the cover via a maintenance interface. The flow sensor is radially inserted into the inner side of the pipe structure along the housing. A pressure sensor 9 is located on the side of the cavity that fits against the housing, and the pressure sensor is electrically connected to the processor. This structure integrates flow and pressure sensing in the same physical location, eliminating measurement delays caused by pipeline flow resistance, improving data synchronization and the accuracy of status judgment. Simultaneously, the modular design facilitates maintenance and replacement.

[0025] To optimize the installation stability and sealing performance of the flow sensor, the technical solution provided in this embodiment includes a snap-fit ​​sleeve 10 and a snap-fit ​​seat 11 between the maintenance interface and the flow sensor 8. The snap-fit ​​sleeve and the snap-fit ​​seat cooperate to form axial limiting and radial clamping, providing double fixation when the flow sensor is inserted into the inside of the pipe.

[0026] To achieve convenient connection and sealing between the flow and pressure transmitter and the locomotive pipeline, the technical solution provided in this embodiment includes a threaded connection part 12 at the end of the flow and pressure transmitter, which connects to the pipeline to be tested on the locomotive. The threaded connection part adopts metric or imperial thread specifications to adapt to different pipe diameters and standards; during installation, it is tightened with a wrench to form a mechanical fixation and airtight seal, preventing compressed air leakage; this design is compatible with existing locomotive pipeline systems, can be quickly deployed without modification, and reduces installation costs and time.

[0027] To facilitate the maintenance and troubleshooting of internal components, the technical solution provided in this embodiment includes a detachable connection between the cover 6 and the housing 5 via bolts 13 and gaskets. The bolts are evenly distributed around the circumference of the cover to provide uniform clamping force; the gaskets are made of rubber or metal to enhance sealing and vibration resistance; during disassembly, only the bolts need to be removed to open the cover, exposing the processor and sensor module for easy cleaning, calibration, or replacement.

[0028] To enhance data storage and historical retrieval capabilities, the technical solution provided in this embodiment includes a memory chip within the host 1. The memory chip utilizes non-volatile flash memory to continuously record data such as traffic, pressure, and timestamps. The host interacts with the memory via an internal bus to achieve data caching and batch transmission. This design supports operational status retrospection and fault analysis, providing data support for preventative maintenance.

[0029] Specifically, the data storage device includes, but is not limited to, USB flash drives, SD cards, or solid-state drives, and can be externally expanded through the data interface 17; the storage also supports a circular recording mode, which automatically overwrites the oldest data when storage space is insufficient, ensuring that the latest data is always retained; in addition, the storage can be pre-installed with diagnostic algorithms to mark abnormal traffic or pressure fluctuations, assisting maintenance personnel in quickly locating problems.

[0030] To ensure the sealing reliability of the pressure sensing area, the technical solution provided in this embodiment includes a sealing ring 14 that is snapped into the edge of the pressure sensor 9 via a groove. The sealing ring is made of nitrile rubber or fluororubber; during installation, it is pressed into the groove to form an annular sealing barrier to prevent the medium from entering the cavity.

[0031] To adapt to measurement requirements of different media and pressure ranges, the technical solution provided in this embodiment includes that the pressure sensor 9 adopts a spring-type pressure sensor or a diaphragm-type pressure sensor. Spring-type sensors are suitable for high-pressure steady-state environments, converting spring deformation into electrical signals; diaphragm-type sensors are suitable for dynamic pressure measurement, utilizing diaphragm flexure to respond to pressure changes. Users can select the appropriate type based on the characteristics of the locomotive's air supply system to improve measurement applicability and accuracy.

[0032] To enhance human-machine interaction and real-time monitoring capabilities, the technical solution provided in this embodiment includes a human-machine interaction panel 15 on the host unit 1. The human-machine interaction panel integrates an LCD display and buttons, and can display information such as flow rate, pressure, and alarm status in real time; it supports parameter setting and manual calibration, allowing operators to complete configuration without external equipment; this design improves on-site operational convenience.

[0033] To achieve high-speed data communication and system integration, the technical solution provided in this embodiment includes a host 1 further having a pre-installed Ethernet interface 16, which is electrically connected to the locomotive's Ethernet switch. The Ethernet interface supports the TCP / IP protocol, enabling real-time data exchange with the train control network; the host can receive control commands or upload monitoring data via the network, supporting remote monitoring and centralized management.

[0034] To support offline data export and software updates, the technical solution provided in this embodiment includes a pre-set data interface 17 for the host 1. The data interface enables data transmission and updates through a data storage medium. The data interface can be a USB, RS-232, or SD card slot, adapting to various external devices. Maintenance personnel can export historical data or inject new firmware via USB flash drive to achieve data management in offline environments. This design enhances the applicability of the device in remote or mobile environments.

[0035] The working principle of this utility model is as follows: When the locomotive air supply system is running, compressed air flows through the pipeline structure of the flow and pressure transmitter. The flow sensor 8 is inserted radially into the inner side of the pipeline to directly sense the fluid velocity and convert it into an electrical signal. At the same time, the pressure sensor 9 senses the medium pressure through the inner wall of the housing 5 and transmits the signal to the processor 7. The processor synchronously collects and preliminarily processes the flow and pressure data and sends it to the host 1 through the measurement interface 3. The host's internal memory records the data and displays it in real time through the human-machine interface panel 15. At the same time, the data is uploaded to the locomotive network through the communication board 2 and the Ethernet interface 16. When the monitored value exceeds the threshold, the host triggers an alarm and records the event, supporting maintenance personnel to export the data for analysis through the data interface 17. The entire device eliminates the flow resistance error between traditional separate sensors through integrated design, realizing high-precision synchronous monitoring and providing reliable data for the intelligent control and fault early warning of the locomotive air supply system.

[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A flow measurement and control structure for an air supply system, comprising a main unit (1), a communication board (2), and a flow and pressure transmitter, wherein the main unit (1) is electrically connected to the flow and pressure transmitter via a measurement interface, and the main unit (1) is electrically connected to the communication board (2) via a communication interface; characterized in that: The flow and pressure transmitter includes a housing (5) configured as a pipe structure, with an installation cavity provided on the outer side of the pipe wall of the housing (5), the installation cavity being closed by a removable cover (6); a pressure sensor (9) and a processor (7) are integrated on the cover (6); the pressure sensing surface of the pressure sensor (9) is in communication with the inner cavity of the pipe of the housing (5); a maintenance interface is provided on the cover (6), and a flow sensor (8) is detachably connected to the processor (7) through the maintenance interface, and the detection part of the flow sensor (8) extends radially into the inner cavity of the pipe along the housing (5).

2. The air supply system flow measurement and control structure according to claim 1, characterized in that, The maintenance interface and the flow sensor (8) are provided with a matching snap sleeve (10) and a snap seat (11).

3. The air supply system flow measurement and control structure according to claim 1 or 2, characterized in that, The end of the housing (5) is provided with a threaded connection part (12) for connecting to the locomotive pipeline to be tested.

4. The air supply system flow measurement and control structure according to claim 1 or 2, characterized in that, The cover (6) and the housing (5) are detachably fixed together by bolts (13) and gaskets.

5. The air supply system flow measurement and control structure according to claim 1 or 2, characterized in that, The host (1) is equipped with a memory.

6. The air supply system flow measurement and control structure according to claim 1, characterized in that, The pressure sensor (9) is provided with a sealing ring (14) on its edge.

7. The air supply system flow measurement and control structure according to claim 1 or 6, characterized in that, The pressure sensor (9) is a spring-type pressure sensor or a diaphragm-type pressure sensor.

8. The air supply system flow measurement and control structure according to claim 1, characterized in that, The surface of the host (1) is provided with a human-machine interaction panel (15).

9. The air supply system flow measurement and control structure according to claim 1, characterized in that, The host (1) is also equipped with an Ethernet interface (16) for connecting to the locomotive Ethernet switch.

10. The air supply system flow measurement and control structure according to claim 1, characterized in that, The host (1) is also equipped with a data interface (17) for connecting to an external data storage medium.

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