Test bench pressure class sensor online metrology structure

Abstract

The application relates to the technical field of aviation accessory testing, in particular to an online metering structure of a pressure sensor of a test bench, which comprises a valve plate, a first test assembly is integrated on the valve plate, the first test assembly comprises a first stop valve, a pressure measuring connector, a metering connector and a pressure sensor; the first stop valve is provided with a first interface and a second interface, the first interface is connected with the pressure measuring connector, the second interface is connected with the metering connector, and the pressure sensor is connected between the second interface and the metering connector; wherein the pressure measuring connector is used for being connected with a pressure measuring point when the first stop valve is opened, and the metering connector is used for being connected with metering equipment when the first stop valve is closed. The application realizes online in-situ metering of the pressure sensor, avoids the cumbersome operation of repeatedly disassembling the sensor for metering in the traditional mode, significantly reduces the work burden of the operator, and effectively prevents the mechanical damage and sealing failure risk of the equipment caused by repeated disassembly and assembly.

Description

Technical Field

[0001] This application relates to the field of aviation accessory testing technology, and in particular to an online measurement structure for pressure sensors on a test bench. Background Technology

[0002] In the aerospace industry, to ensure flight safety and system reliability, all types of aerospace accessories must undergo rigorous performance testing before installation. Therefore, integrated testing equipment for aerospace accessories, incorporating multiple testing functions, is widely used. One of the core functions of such testing equipment is to accurately acquire and monitor the numerous pressure sensors within it. The pressure sensor metrology structure on the test bench, as a key component ensuring the measurement accuracy and long-term stability of these sensors, directly affects the accuracy of the test data and the efficiency of the testing process.

[0003] In existing technologies, the calibration of pressure sensors in test benches is typically performed offline. Specifically, when calibration of a pressure sensor is required, the operator must first remove the sensor from its operating test circuit and then connect it to standard metrology equipment to complete the calibration. After calibration, the sensor must be reinstalled in its original position on the test bench, and the piping and wiring must be reconnected to ensure the test bench can continue to operate normally.

[0004] The aforementioned traditional offline measurement method has significant drawbacks. The most prominent problem is that each measurement involves a repetitive cycle of "disassembly-measurement-installation," which not only greatly increases the workload of operators, but also easily causes mechanical damage to the sensor itself and its connecting pipelines. Furthermore, it may introduce new fault risks such as poor connection sealing, affecting the reliability of the measurement results. Utility Model Content

[0005] To address the technical problem that repeated disassembly and installation can easily cause mechanical damage to the sensor itself and its connecting pipes, and may also introduce new fault risks such as poor connection sealing, thus affecting the reliability of measurement results, this application provides an online measurement structure for pressure sensors on a test bench.

[0006] The online measurement structure for a pressure sensor on a test bench provided in this application adopts the following technical solution: An online metering structure for a pressure sensor on a test bench includes a valve plate, on which a first test component is integrated. The first test component includes a first shut-off valve, a pressure measuring connector, a metering connector, and a pressure sensor. The first shut-off valve is equipped with a first interface and a second interface. The first interface is connected to the pressure testing connector, and the second interface is connected to the metering connector. The pressure sensor is connected between the second interface and the metering connector. When the first shut-off valve is open, the pressure testing connector is used to connect to the pressure testing pilot. When the first shut-off valve is closed, the metering connector is used to connect to the metering device.

[0007] By adopting the above technical solution, the first test component is integrated onto the valve plate, and the opening and closing of the first shut-off valve is used to switch the circuit, changing the traditional offline measurement mode and realizing online measurement. Under normal operating conditions, the first shut-off valve is open, and the pressure sensor is connected to the test circuit through the pressure measuring connector for real-time monitoring without any modifications. When calibration is required, only the first shut-off valve needs to be closed to disconnect the test circuit, and the standard measurement equipment can be connected to the measurement connector, allowing the pressure sensor to be calibrated in almost the same working state. This completely avoids the cumbersome steps of disassembling it from the test bench, greatly reducing the workload of operators and effectively avoiding the risk of mechanical damage and sealing failure to the sensor and connecting pipelines during disassembly and installation, thereby ensuring the long-term reliability of measurement results and system security. At the same time, since the measurement process does not interrupt the overall structural integrity of the test bench, the waiting time for equipment downtime due to measurement is significantly shortened, greatly improving the continuity of testing tasks and overall work efficiency.

[0008] Optionally, there are multiple first test components, and the multiple first test components are arranged in a linear array.

[0009] By adopting the above technical solution, multiple first test components are arranged in a linear array, which can efficiently meet the testing requirements of multiple channels and multiple test points. At the same time, the overall structure is compact and regular, greatly optimizing the space utilization and making it easier to integrate more functions within the limited test bench space.

[0010] Optionally, the pressure testing connector and the metering connector are located on opposite sides of the valve plate.

[0011] By adopting the above technical solution, the pressure testing connector and the metering connector are placed on opposite sides of the valve plate, realizing the physical separation and functional zoning of the test pipeline and the metering pipeline. This makes the operating space clear and the connection operations do not interfere with each other, fundamentally and effectively preventing the risk of accidentally connecting the metering equipment or the test circuit during the testing process or the metering process.

[0012] Optionally, the pressure sensor and the first shut-off valve are located on opposite sides of the valve plate.

[0013] By adopting the above technical solution, the pressure sensor and the first shut-off valve are arranged on opposite sides of the valve plate, achieving a balanced distribution of mass and function. This not only improves the overall structural stability and reliability of the valve plate after installation, but also creates a clear, independent and non-interfering working interface for electrical connection, signal monitoring and valve operation, greatly facilitating daily operation and maintenance.

[0014] Optionally, the pressure sensor and the pressure measuring connector are located on the same side of the valve plate.

[0015] By adopting the above technical solution, the pressure sensor and pressure testing connector are set on the same side of the valve plate, establishing an intuitive visual and operational logic of "what you see is what you get". Operators can quickly identify the test interface and make connections, which significantly simplifies the operation process. At the same time, this layout enhances the functional uniformity of the test surface and improves error prevention capabilities and operational safety.

[0016] Optionally, the first test component is provided with multiple pressure testing connectors and multiple metering connectors arranged along a straight line, and the straight line where the multiple metering connectors are located is parallel to the straight line where the multiple pressure testing connectors are located.

[0017] By adopting the above technical solution, multiple pressure testing joints and metering joints are arranged in parallel linear arrays, enabling the laying of all external pipelines to proceed along a clear and orderly path. This greatly facilitates the centralized wiring, connection, and organization of pipelines, and improves the overall regularity, professionalism, and maintainability of the equipment.

[0018] Optionally, the pressure sensors are arranged in a straight line and are parallel to the straight line containing the plurality of pressure testing connectors.

[0019] By adopting the above technical solution, the pressure sensors are also arranged in a straight line and parallel to the pressure measuring connector array, which achieves a high degree of uniformity in the layout of all core components of the test circuit. This makes the routing of sensor cables neater and more orderly, which is convenient for centralized management and fixing, and reduces the chaos and potential interference caused by cable crossing and tangling.

[0020] Optionally, a connecting seat is connected to the valve plate; and / or The valve plate includes a detachably connected housing and a valve cover. The pressure sensor and the pressure measuring connector are inserted into the bottom wall of the housing, and the first shut-off valve and the metering connector are inserted into the valve cover.

[0021] By adopting the above technical solutions, the connector allows the entire metering structure to be quickly assembled and disassembled as a complete module, improving the convenience of equipment deployment and relocation; while the valve plate adopts a detachable design and inserts components on both sides, which greatly facilitates the initial assembly of the internal flow channels and components of the valve plate, as well as subsequent maintenance, repair and replacement operations, improving the maintainability of the structure.

[0022] Optionally, a second test assembly is integrated on the valve plate, the second test assembly including a differential pressure transmitter, a second shut-off valve and a connecting joint; The differential pressure transmitter is equipped with two interfaces, each of which is connected to a second shut-off valve. The second shut-off valve is also connected to a connecting connector, which is used to connect to the pressure measuring pilot or the metering equipment.

[0023] By adopting the above technical solution and integrating a second test component on the valve plate, the advantages of online metering are successfully extended to the field of differential pressure measurement. This enables the differential pressure transmitter to achieve in-situ calibration, avoids disassembly, ensures the long-term reliability and accuracy of differential pressure measurement, and enriches the functionality of the integrated structure.

[0024] Optionally, a plurality of the first test components and the second test components are arranged in a linear array.

[0025] By adopting the above technical solution, the first test component and the second test component are uniformly planned as a linear array, forming a highly integrated metrology module with complete functions, rigorous layout, and unified style. This not only further optimizes space utilization, but also makes the overall equipment appear more regular, significantly improving the comprehensive efficiency and overall aesthetics of the test platform.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By integrating the first test component into the valve plate and using the opening and closing of the shut-off valve to switch the flow path, online in-situ measurement of the pressure sensor is realized, avoiding the cumbersome operation of repeatedly disassembling the sensor for measurement in the traditional method. This not only significantly reduces the workload of operators, but also effectively prevents the risk of mechanical damage to equipment and seal failure caused by repeated disassembly and assembly. Thus, while improving measurement efficiency, it ensures the long-term measurement reliability and safety of the test system.

[0027] 2. By placing the pressure testing connector and the metering connector on opposite sides of the valve plate, physical isolation and functional zoning of the test circuit and the metering circuit are achieved. This makes the connection work space between the test gas source or liquid source pipeline and the metering equipment pipeline clear and free from interference. It fundamentally prevents the operational risks of accidentally connecting the metering equipment or the test circuit during the testing process, and significantly improves the accuracy of operation and the inherent safety of the system.

[0028] 3. By adopting a linear array arrangement including multiple first and second test components, a highly integrated and well-organized metrology module is constructed, which greatly optimizes space utilization, makes the overall structure compact, and facilitates the centralized layout and management of external pipelines and cables. This not only improves the functional density of the equipment in a limited space, but also enhances its regularity, maintainability, and overall aesthetics, meeting the stringent requirements of modern integrated testing equipment for high efficiency and compact layout. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the online measurement structure of the pressure sensor on the test bench in the embodiments of this application from one perspective; Figure 2 This is a schematic diagram of the online measurement structure of the pressure sensor on the test bench from another perspective in the embodiments of this application; Figure 3 This is a schematic diagram of the connection of the online metering structure of the pressure sensor on the test bench in the embodiments of this application.

[0030] Explanation of reference numerals in the attached figures: 1. Valve plate; 11. Housing; 12. Valve cover; 2. First test assembly; 21. First shut-off valve; 22. Pressure measuring connector; 23. Metering connector; 24. Pressure sensor; 3. Second test assembly; 31. Differential pressure transmitter; 32. Second shut-off valve; 33. Connecting connector; 4. Connecting seat. Detailed Implementation

[0031] The following will be combined with the appendix Figure 1-3 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0032] like Figure 1 As shown in the figure, this application discloses an online measurement structure for a pressure sensor on a test bench, including a valve plate 1, a first test component 2, and a second test component 3.

[0033] The valve plate 1 includes a detachably connected housing 11 and a valve cover 12. The first test component 2 and the second test component 3 are mounted on the valve plate 1. The valve plate 1 is hollow inside and the housing 11 and the valve cover 12 are detachably connected, which facilitates the assembly of the first test component 2 and the second test component 3 inside the valve plate 1.

[0034] The housing 11 and the valve cover 12 can be connected by bolts or snaps, which facilitates the convenient installation and debugging of various test components within the internal space of the valve plate 1 during assembly or subsequent maintenance. The valve plate 1 is also equipped with a connecting seat 4, which allows the entire metering structure to be quickly installed on or removed from the test bench as a single module.

[0035] The valve plate 1 integrates at least one first test component 2, which includes a first shut-off valve 21, a pressure measuring connector 22, a metering connector 23, and a pressure sensor 24, forming a functional unit through a specific flow path connection relationship. For example... Figure 3 As shown, the first shut-off valve 21 is equipped with a first interface and a second interface. The first interface is connected to the pressure measuring connector 22 for connecting the pressure measuring pilot of the test bench, and the second interface is connected to the standard measuring equipment through the metering connector 23. The pressure sensor 24 to be measured is set on the pipeline between the second interface and the metering connector 23.

[0036] Seamless switching between operating mode and metering mode is achieved by operating the first shut-off valve 21. When the first shut-off valve 21 is open, the pressure sensor 24 is connected to the test circuit through the pressure measuring connector 22 to perform normal pressure monitoring. When calibration is required, simply close the first shut-off valve 21 to disconnect from the test circuit, and connect the standard metering equipment to the metering connector 23. This creates a closed and independent calibration circuit without disassembling the pressure sensor 24, solving the problems of high workload, low efficiency, and easily damaged components caused by repeated sensor disassembly, and realizing online, in-situ metering.

[0037] To optimize spatial layout and accommodate multi-channel testing requirements, in this embodiment, multiple first test components 2 are provided and arranged in a linear array on the valve plate 1. Specifically, as shown... Figure 1 As shown, the pressure testing connector 22 and the metering connector 23 are arranged on two opposite sides of the valve plate 1. The separate layout ensures that the connection between the test gas source or liquid source pipeline and the metering equipment pipeline does not interfere with each other, and the operating space is clear.

[0038] The pressure sensor 24 and the first shut-off valve 21 are arranged on opposite sides of the valve plate 1, which avoids problems such as the overall center of gravity of the valve plate 1 shifting and additional bending moment generated during installation that may be caused by the mass being concentrated on one side of the valve plate 1. This ensures that the entire metering structure is more stable after being installed on the test bench, and reduces vibration or stress caused by its own structural imbalance. This provides a more stable and reliable measurement environment for the pressure sensor 24, and indirectly ensures the accuracy of its long-term measurement.

[0039] By placing the pressure sensor 24 and the first shut-off valve 21 on opposite sides, a clear and non-interfering working interface is created for the operator. On one side, the electrical connections, signal readings, and daily status monitoring of all pressure sensors 24 can be centrally managed; on the other side, the manual or automatic operation and mode switching of all first shut-off valves 21 can be centrally managed. When maintenance is required, the partitioned setup provides more operating space and easier tool use; for example, disassembling one shut-off valve will not affect the cables of the sensors on the other side.

[0040] The pressure sensor 24 and the pressure testing connector 22 are located on the same side of the valve plate 1. In this embodiment, the pressure sensor 24 and the pressure testing connector 22 are inserted into the bottom of the housing 11. This arrangement establishes a clear and direct visual and operational logical association. When the operator sees the pressure sensor 24, it means that this side is the "test surface." The pressure sensor 24 acts as a self-evident "identifier," making it easy for the operator to remember the location of the pressure testing connector 22. This ensures that the direction is clear when connecting the pressure testing connector 22 to the pressure testing test point, greatly simplifying the operation process of the initial installation and subsequent daily testing, and effectively avoiding the possibility of mistakenly connecting it to the metering connector 23 on the other side.

[0041] Furthermore, when performing wiring connections, inspections, or troubleshooting, operators only need to focus on the side of the valve plate 1 where the pressure sensor 24 is located to complete all pressure measurement work, reducing movement and turning during operation, and lowering operational complexity and time costs. Simultaneously, it physically isolates the test circuit interface (pressure measurement connector 22) from the metering circuit interface (metering connector 23, located on the other side), forming a natural error-proof barrier. This spatial isolation fundamentally prevents the risk of accidentally touching the metering equipment interface during normal testing or misoperating the test circuit during metering calibration, enhancing the inherent safety of the entire system.

[0042] Combination Figure 1 and Figure 2 In the multiple first test components 2, multiple pressure testing connectors 22 and multiple metering connectors 23 form two parallel straight lines, and the straight line of arrangement of all pressure sensors 24 is also parallel to the straight line of the pressure testing connectors 22. This regular linear array arrangement not only makes the structure compact and occupies little space, but also greatly facilitates the centralized layout and connection of external pipelines, and improves the overall regularity and maintainability of the equipment.

[0043] In addition, at least one second test component 3 is integrated on the valve plate 1 for online measurement to extend the differential pressure measurement function. Figure 1 and Figure 3The second test component 3 includes a differential pressure transmitter 31, whose two pressure ports are respectively connected to a second shut-off valve 32, and each second shut-off valve 32 is further connected to a connection joint 33 for docking with a pressure testing pilot or metering equipment.

[0044] By operating the two second shut-off valves 32, the differential pressure transmitter 31 can seamlessly switch between normal operation mode and online metering mode. During normal pressure measurement, both second shut-off valves 32 are open. At this time, the two connection joints 33 are connected to two different pressure testing points on the test bench via pipelines. The differential pressure transmitter 31 monitors the pressure difference between these two points in real time and outputs the signal to the test system; this is its normal measurement function. When calibration of the differential pressure transmitter 31 is required, it enters metering mode. In this mode, the operator disconnects the two connection joints 33 from the pressure testing points and connects them to a standard metering device. Subsequently, by applying precise standard pressure to the two channels through the metering device, the measurement accuracy, linearity, and other performance parameters of the differential pressure transmitter 31 can be calibrated.

[0045] When switching to calibration, there is no need to remove the second test component 3 from the test bench, completely avoiding physical damage to the precision sensor, wear on the sealing surfaces of the connecting pipes, and orientation errors introduced by reinstallation that may be caused by repeated disassembly and installation. This greatly ensures the long-term reliability and repeatability of the measurement results. The calibration process is simplified to simply switching the connection connector 33 and operating the shut-off valve. The process is standardized, time-saving, and significantly reduces the downtime of the equipment due to calibration, thus improving the overall efficiency of the testing task.

[0046] Multiple first test components 2 and second test components 3 together form a neat linear array on the valve plate 1, forming a fully functional, rationally laid out, and conveniently maintained integrated online metering module, which significantly improves the overall efficiency and reliability of the testing equipment.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An online measurement structure for a pressure sensor on a test bench, characterized in that, It includes a valve plate (1), on which a first test component (2) is integrated. The first test component (2) includes a first shut-off valve (21), a pressure measuring connector (22), a metering connector (23), and a pressure sensor (24). The first shut-off valve (21) is equipped with a first interface and a second interface. The first interface is connected to the pressure measuring connector (22), and the second interface is connected to the metering connector (23). The pressure sensor (24) is connected between the second interface and the metering connector (23). When the first shut-off valve (21) is open, the pressure measuring connector (22) is used to connect to the pressure measuring pilot. When the first shut-off valve (21) is closed, the metering connector (23) is used to connect to the metering device.

2. The online measurement structure for pressure sensors on a test bench according to claim 1, characterized in that, The first test component (2) is provided in multiple ways, and the multiple first test components (2) are arranged in a linear array.

3. The online measurement structure for pressure sensors on a test bench according to claim 1 or 2, characterized in that, The pressure testing connector (22) and the metering connector (23) are located on opposite sides of the valve plate (1).

4. The online measurement structure for pressure sensors on a test bench according to claim 3, characterized in that, The pressure sensor (24) and the first shut-off valve (21) are located on opposite sides of the valve plate (1).

5. The online measurement structure for pressure sensors on a test bench according to claim 4, characterized in that, The pressure sensor (24) and the pressure measuring connector (22) are located on the same side of the valve plate (1).

6. The online measurement structure for pressure sensors on a test bench according to claim 3, characterized in that, The first test component (2) is provided with multiple pressure testing connectors (22) and multiple metering connectors (23) arranged along a straight line, and the straight line where the multiple metering connectors (23) are located is parallel to the straight line where the multiple pressure testing connectors (22) are located.

7. The online measurement structure for pressure sensors on a test bench according to claim 6, characterized in that, The pressure sensors (24) are arranged in a straight line and are parallel to the straight line containing the plurality of pressure measuring connectors (22).

8. The online measurement structure for pressure sensors on a test bench according to claim 1, characterized in that, The valve plate (1) is integrated with a second test component (3), which includes a differential pressure transmitter (31), a second shut-off valve (32), and a connecting joint (33). The differential pressure transmitter (31) is equipped with two interfaces, each of which is connected to a second shut-off valve (32). The second shut-off valve (32) is also connected to a connecting joint (33), which is used to connect to the pressure measuring pilot or the metering equipment.

9. The online measurement structure for pressure sensors on a test bench according to claim 8, characterized in that, Multiple first test components (2) and second test components (3) are arranged in a linear array.

10. The online measurement structure for pressure sensors on a test bench according to claim 1, characterized in that, A connecting seat (4) is connected to the valve plate (1); and / or The valve plate (1) includes a detachably connected housing (11) and valve cover (12). The pressure sensor (24) and the pressure measuring connector (22) are inserted into the bottom wall of the housing (11). The first shut-off valve (21) and the metering connector (23) are inserted into the valve cover (12).

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