Ultrasonic gas meter safety function detection platform

Abstract

The utility model relates to an ultrasonic gas meter safety function detection platform, including work table, detection mechanism and ultrasonic gas meter, detection mechanism, detection mechanism includes install cabinet, pressure controller, flow controller and gas outlet pipeline, install cabinet sets up on work table upside, pressure controller and flow controller all set up install cabinet one side, the number of gas outlet pipeline is several, install cabinet one side is provided with two detection connectors, one of detection connectors is connected with pressure controller and flow controller, another detection connector is connected with several gas outlet pipelines, and the input end and output end of ultrasonic gas meter are connected with two detection connectors respectively, the utility model discloses detection mechanism, through the high accuracy pressure controller of front end, cooperate low pressure loss pipeline design, can fast accurate regulation gas table internal pressure, realize multifunctional test, and through the back pressure generation pipeline of end, according to different flow range, intelligent selection end back pressure.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic gas meter testing technology, and in particular to an ultrasonic gas meter safety function testing platform. Background Technology

[0002] A gas meter is a device used to measure and record the amount of gas (such as natural gas, liquefied petroleum gas, etc.) used. An ultrasonic gas meter is a fully electronic instrument that uses ultrasonic sensing technology to measure gas flow. It calculates the flow rate by measuring the time difference of ultrasonic waves propagating in the gas. It features high accuracy, no mechanical wear, and a wide range. The principle of ultrasonic gas meters is to calculate the flow velocity based on the time difference of ultrasonic waves propagating in the gas in both upstream and downstream directions, and to determine the flow rate by measuring the product of the change in sound velocity and the cross-sectional area of ​​the pipe. This all-electronic structure avoids the wear and tear problems of traditional mechanical meters and can correct for the influence of environmental factors such as temperature and pressure on the metering in real time. With the popularization of smart gas meters with auxiliary functions, their core functions, such as overpressure protection and backflow detection, are directly related to gas safety and metering accuracy. Therefore, during production, ultrasonic gas meters need to undergo safety testing to ensure safe use.

[0003] In actual use, the following defects exist: Traditional testing equipment relies on manual operation, and no dedicated equipment has yet been found to directly test its safety functions such as overpressure protection and backflow detection. Its experiments mostly rely on equipment such as bell jars and sonic nozzles to conduct single-station, single-experiment tests, resulting in low testing efficiency. Utility Model Content

[0004] In view of the technical problems in the existing technology, traditional testing equipment relies on manual operation and there is no dedicated equipment for directly testing its safety functions such as overpressure protection and backflow detection. Its experiments mostly rely on equipment such as bell jar platform and sonic nozzle to carry out single-station single experiments, resulting in low testing efficiency. This utility model provides an ultrasonic gas meter safety function testing platform.

[0005] The technical solution adopted in this utility model is: an ultrasonic gas meter safety function testing platform, including a workbench, a testing mechanism, and an ultrasonic gas meter. The testing mechanism includes a mounting cabinet, a pressure controller, a flow controller, and an outlet pipeline. The mounting cabinet is located on the upper side of the workbench, and the pressure controller and the flow controller are both located on one side of the mounting cabinet. There are several outlet pipelines. Two testing connectors are provided on one side of the mounting cabinet. One testing connector is connected to the pressure controller and the flow controller, and the other testing connector is connected to several outlet pipelines. The input end and output end of the ultrasonic gas meter are respectively connected to the two testing connectors.

[0006] Furthermore, a float flow meter is installed at the output end of the air outlet pipeline, and a pressure sensor and a temperature sensor are installed at one end of each of the two detection connectors.

[0007] Furthermore, the pressure controller and the flow controller are connected in parallel, and the plurality of air outlet pipes are connected in parallel, with each of the plurality of air outlet pipes being connected to the pressure controller and the flow controller respectively.

[0008] Furthermore, a display module is provided on one side of the installation cabinet, and a control module is provided inside the installation cabinet, with the control module corresponding to the display module.

[0009] Furthermore, an installation tray is provided on one side of the installation cabinet, the installation tray corresponds to the two detection connectors, and the ultrasonic gas meter is arranged between the installation trays.

[0010] Furthermore, a limiting mechanism is provided on the lower side of the mounting tray. The limiting mechanism includes a sliding block, an L-shaped limiting plate, and a spring. A mounting cavity is opened on the lower side of the mounting tray. The sliding block is slidably installed in the mounting cavity. The L-shaped limiting plate is slidably disposed at the bottom of the inner wall of the mounting tray. The L-shaped limiting plate is fixedly connected to the sliding block. The spring is disposed between the sliding block and one side of the inner wall of the mounting cavity.

[0011] Furthermore, there are two sliding blocks and two L-shaped limiting plates. A toothed plate is fixedly installed on one side of each of the two sliding blocks. A rotating shaft is rotatably installed in the middle of the inner wall of the mounting cavity. A gear is fixedly installed on the periphery of the rotating shaft. Both toothed plates mesh with the gear.

[0012] The beneficial effects of this utility model are: 1. The testing mechanism of this utility model adopts a high-precision pressure controller at the front end and is designed with low pressure loss pipeline. It can quickly and accurately adjust the internal pressure of the gas meter to achieve multi-functional testing. Furthermore, it is equipped with a back pressure generating pipeline at the end. According to different flow ranges, the back pressure at the end is intelligently selected to ensure the pressure stability of the gas meter during flow-related tests, thereby improving the testing efficiency of the gas meter.

[0013] 2. Secondly, through the limiting mechanism, this utility model facilitates the fixed limiting of the gas meter by the staff during the testing of the gas meter. This not only improves the convenience of connecting the gas meter with the testing mechanism, but also ensures the stability of the gas meter during testing after being connected to the testing mechanism. Attached Figure Description

[0014] Figure 1 This is a frontal perspective view of the installation of this utility model; Figure 2This is a top-view perspective view of the mounting cabinet of this utility model; Figure 3 This is a pipe connection view of this utility model; Figure 4 This is a cross-sectional view of the mounting tray of this utility model.

[0015] The following are labeled in the diagram: 1. Workbench; 2. Detection mechanism; 4. Display module; 5. Mounting cabinet; 6. Pressure controller; 7. Flow controller; 9. Pressure sensor; 10. Temperature sensor; 11. Mounting tray; 12. Detection connector; 13. Air outlet pipe; 14. Ultrasonic air meter; 16. Float flow meter; 17. Mounting chamber; 18. Rotating shaft; 19. Gear; 20. Sliding block; 21. Toothed plate; 22. L-shaped limit plate; 24. Spring; 25. Limiting mechanism. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The following is in conjunction with the appendix Figures 1-4 The present invention will be further described below.

[0019] To address the problems existing in the background technology, this application proposes the following technical solution: an ultrasonic gas meter safety function testing station.

[0020] The specific technical solution includes a workbench 1, a testing mechanism 2, and an ultrasonic gas meter 14. The testing mechanism 2 includes a mounting cabinet 5, a pressure controller 6, a flow controller 7, and outlet pipes 13. The mounting cabinet 5 is located on the upper side of the workbench 1. The pressure controller 6 and flow controller 7 are both located on one side of the mounting cabinet 5. There are several outlet pipes 13. Two testing connectors 12 are located on one side of the mounting cabinet 5. One testing connector 12 is connected to the pressure controller 6 and flow controller 7, and the other testing connector 12 is connected to several outlet pipes 13. The ultrasonic gas meter 14 has an input and an output... The end is connected to two detection connectors 12 respectively. A float flow meter 16 is installed at the output end of the air outlet pipe 13. A pressure sensor 9 and a temperature sensor 10 are installed at one end of each of the two detection connectors 12. The pressure controller 6 and the flow controller 7 are connected in parallel. Several air outlet pipes 13 are connected in parallel. Several air outlet pipes 13 are connected to the pressure controller 6 and the flow controller 7 respectively. A display module 4 is installed on one side of the mounting cabinet 5. A control module is installed inside the mounting cabinet 5. The control module corresponds to the display module 4. The device uses a factory air source or a pressure stabilizing tank as the air source and can accurately control the pressure and flow of the pipeline loop.

[0021] Reference Figure 4 An installation tray 11 is provided on one side of the installation cabinet 5. The installation tray 11 corresponds to two detection connectors 12. An ultrasonic gas meter 14 is placed between the installation trays 11. A limit mechanism 25 is provided on the lower side of the installation tray 11. The limit mechanism 25 includes a sliding block 20, an L-shaped limit plate 22, and a spring 24. An installation cavity 17 is opened on the lower side of the installation tray 11. The sliding block 20 is slidably installed in the installation cavity 17. The L-shaped limit plate 22 is slidably placed at the bottom of the inner wall of the installation tray 11. The L-shaped limit plate 22 is fixedly connected to the sliding block 20. The spring 24 is placed between the sliding block 20 and one side of the inner wall of the installation cavity 17. There are two sliding blocks 20 and two L-shaped limit plates 22. A toothed plate 21 is fixedly installed on one side of each of the two sliding blocks 20. A rotating shaft 1 is rotatably installed in the middle of the inner wall of the installation cavity 17. 8. A gear 19 is fixedly installed around the rotating shaft 18. Two toothed plates 21 mesh with the gear 19. By pulling one of the L-shaped limiting plates 22, the L-shaped limiting plate 22 drives the connected sliding block 20 and toothed plate 21 to move. The movement of toothed plate 21 can drive the other toothed plate 21 to move through the gear 19. The movement of the other toothed plate 21 can drive the other sliding block 20 and L-shaped limiting plate 22 connected to it to move. Then, the ultrasonic gas meter 14 is installed between the mounting trays 11. After installation, the L-shaped limiting plate 22 is released, so that the sliding block 20 and L-shaped limiting plate 22 can move towards the ultrasonic gas meter 14 by the elastic force of the spring 24, thereby clamping and fixing the edge of the ultrasonic gas meter 14, so that the ultrasonic gas meter 14 is stably installed between the mounting trays 11.

[0022] To ensure that those skilled in the art can fully understand the technical solution, this application provides the following overall overview: In use, both the pressure controller 6 and the flow controller 7 are connected to the factory's air source or pressure stabilizing tank, and the ultrasonic gas meter 14 is installed between the mounting trays 11. Then, the two detection connectors 12 are connected to the input and output terminals of the ultrasonic gas meter 14, respectively. The pressure controller 6 and flow controller 7 combine to generate the target flow rate in two separate paths: the pressure controller 6 branch generates a small flow rate, while the flow controller 7 branch generates a large flow rate. This replaces traditional flow generation devices such as bell stands and sonic nozzles, significantly reducing BOM costs. When supplying air to the ultrasonic gas meter 14, the pressure sensor 9 and pressure controller 6 combine to provide feedback on the ultrasonic gas meter 14's flow rate. The pressure is reduced, thus eliminating pipeline pressure loss between the pressure controller 6 and the ultrasonic gas meter 14, making the pressure of the ultrasonic gas meter 14 more accurate. The gas outlet is divided into five branches, which allows the selection of pipelines with different pressure losses according to different flow rates. This ensures that the ultrasonic gas meter 14 will not alarm due to insufficient pressure at low flow rates, and will not alarm due to excessive pressure at high flow rates. The display module 4 can display the detection status in real time. After the operator configures the mode through the control module, the equipment can automatically realize fully automatic detection of safety functions such as gas meter overpressure, underpressure, overcurrent, micro-leakage, constant flow, and reverse flow without manual intervention.

[0023] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0024] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. An ultrasonic gas meter safety function testing platform, characterized in that, The device includes a workbench (1), a testing mechanism (2), and an ultrasonic gas meter (14). The testing mechanism (2) includes a mounting cabinet (5), a pressure controller (6), a flow controller (7), and an outlet pipe (13). The mounting cabinet (5) is located on the upper side of the workbench (1). The pressure controller (6) and the flow controller (7) are both located on one side of the mounting cabinet (5). There are several outlet pipes (13). Two testing connectors (12) are provided on one side of the mounting cabinet (5). One of the testing connectors (12) is connected to the pressure controller (6) and the flow controller (7), and the other testing connector (12) is connected to several outlet pipes (13). The input and output ends of the ultrasonic gas meter (14) are respectively connected to the two testing connectors (12).

2. The ultrasonic gas meter safety function testing platform according to claim 1, characterized in that, The outlet pipe (13) is equipped with a float flow meter (16) at its output end, and each of the two detection connectors (12) is equipped with a pressure sensor (9) and a temperature sensor (10) at one end.

3. The ultrasonic gas meter safety function testing platform according to claim 2, characterized in that, The pressure controller (6) and the flow controller (7) are connected in parallel, and the plurality of air outlet pipes (13) are connected in parallel. The plurality of air outlet pipes (13) are respectively connected to the pressure controller (6) and the flow controller (7).

4. The ultrasonic gas meter safety function testing platform according to claim 3, characterized in that, A display module (4) is provided on one side of the mounting cabinet (5), and a control module is provided inside the mounting cabinet (5). The control module corresponds to the display module (4).

5. The ultrasonic gas meter safety function testing platform according to claim 1, characterized in that, The mounting cabinet (5) is provided with a mounting tray (11) on one side, the mounting tray (11) corresponds to the two detection connectors (12), and the ultrasonic gas meter (14) is arranged between the mounting trays (11).

6. The ultrasonic gas meter safety function testing platform according to claim 5, characterized in that, A limiting mechanism (25) is provided on the lower side of the mounting tray (11). The limiting mechanism (25) includes a sliding block (20), an L-shaped limiting plate (22), and a spring (24). A mounting cavity (17) is opened on the lower side of the mounting tray (11). The sliding block (20) is slidably installed in the mounting cavity (17). The L-shaped limiting plate (22) is slidably disposed at the bottom of the inner wall of the mounting tray (11). The L-shaped limiting plate (22) is fixedly connected to the sliding block (20). The spring (24) is disposed between the sliding block (20) and one side of the inner wall of the mounting cavity (17).

7. The ultrasonic gas meter safety function testing station according to claim 6, characterized in that, The number of the sliding block (20) and the L-shaped limiting plate (22) are both two. A toothed plate (21) is fixedly installed on one side of each of the two sliding blocks (20). A rotating shaft (18) is rotatably installed in the middle of the inner wall of the mounting cavity (17). A gear (19) is fixedly installed on the periphery of the rotating shaft (18). Both toothed plates (21) mesh with the gear (19).

Images