An ultrasonic gas meter module dynamic detection device

Abstract

An ultrasonic gas meter module dynamic detection device is characterized in that: it comprises a sealing tool (1), the sealing tool (1) comprises an air inlet pipe (11), an air outlet pipe (12) and a sealing space (13) in the sealing tool (1); it comprises an ultrasonic gas meter module (2) in the sealing space (13), the ultrasonic gas meter module (2) comprises an ultrasonic gas meter shell (21) and a transducer module (22) installed on the ultrasonic gas meter shell (21), the ultrasonic gas meter shell (21) has an inlet (211) communicated with the air inlet pipe (11) and an outlet (212) communicated with the sealing space (13); the ultrasonic gas meter module can detect the values of the transducer before the ultrasonic gas meter is assembled, thereby reducing the production of unqualified ultrasonic gas meters, saving repair time and materials.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic gas meter testing technology, and in particular to a dynamic testing device for an ultrasonic gas meter module. Background Technology

[0002] Before assembly, it is generally impossible to test the sensitivity, frequency response, signal attenuation, and other values ​​of the transducer in the ultrasonic gas meter module. Consequently, it is also impossible to screen out unqualified ultrasonic gas meter modules in advance, which leads to the subsequent rework and disassembly of unqualified ultrasonic gas meters after assembly, wasting both repair time and repair materials.

[0003] Based on this, a dynamic testing device for ultrasonic gas meter modules is designed, which can detect various values ​​of the transducer in the ultrasonic gas meter module before the ultrasonic gas meter is assembled, thereby reducing the production of unqualified ultrasonic gas meters. Utility Model Content

[0004] The present invention aims to overcome the defects in the prior art by providing a dynamic testing device for ultrasonic gas meter modules. This device can detect various values ​​of the transducer in the ultrasonic gas meter module before the ultrasonic gas meter is assembled, thereby reducing the production of subsequent defective ultrasonic gas meters, saving both repair time and repair materials.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a dynamic detection device for an ultrasonic gas meter module, comprising a sealing fixture, the sealing fixture including an inlet pipe, an outlet pipe and a sealed space located inside the same end; an ultrasonic gas meter module located in the sealed space, the ultrasonic gas meter module including an ultrasonic gas meter housing and a transducer module installed on the ultrasonic gas meter housing, the ultrasonic gas meter housing having an inlet communicating with the inlet pipe and an outlet communicating with the sealed space; a sonic nozzle device, the sonic nozzle device including a first sonic nozzle communicating with the inlet pipe, a second sonic nozzle communicating with the outlet pipe, and a control board for controlling the gas flow rate of the first sonic nozzle and the second sonic nozzle; and a main control board, one end of the main control board being connected to the transducer module via a wire, and the other end of the main control board being connected to the control board via a wire.

[0006] As a preferred embodiment of this utility model, the transducer module includes a PCB board and transducers located on both sides of the PCB board. The transducers are disposed close to the interior of the ultrasonic gas meter housing, and a sealing ring is disposed around the transducers to isolate the interior of the ultrasonic gas meter housing from the external environment.

[0007] As a preferred embodiment of the present invention, the ultrasonic gas meter module includes a housing that covers the transducer module.

[0008] As a preferred embodiment of the present invention, the sealing fixture includes a base plate, a top plate, a short side plate, and a long side plate. The short side plate is located on the left and right sides of the base plate and is fixedly mounted on the base plate. The long side plate is located on the front and rear sides of the base plate and is fixedly mounted on the base plate. The top plate is arranged opposite to the base plate and is connected to the side of the short side plate and the long side plate away from the base plate.

[0009] In a preferred embodiment of this utility model, the inner wall of the base plate has a circumferential groove, through which bolts pass to connect the base plate and the short side plate, and through which bolts pass to connect the base plate and the long side plate; the short side plate has positioning grooves at the center of both sides, through which bolts pass to connect the long side plate and the short side plate; the inner wall of the top plate has a circumferential groove, through which bolts pass to connect the top plate and the short side plate, and through which bolts pass to connect the top plate and the long side plate.

[0010] In a preferred embodiment of this utility model, both the air inlet pipe and the air outlet pipe are located on the top plate.

[0011] As a preferred embodiment of this utility model, a main control board is provided on the long side plate, and the wires connecting the main control board and the transducer module pass through the long side plate. The wires have a sealing sleeve that isolates the sealed space from the external environment.

[0012] As a preferred embodiment of this utility model, a transfer pipe is also provided between the air intake pipe and the inlet.

[0013] In a preferred embodiment of this utility model, the main control board is also connected to the display screen via a wire.

[0014] As a preferred embodiment of this utility model, the air inlet pipe is provided with an air inlet contact portion that abuts against the front end of the first sonic nozzle after being pressed down, and the air outlet pipe is provided with an air outlet contact portion that abuts against the front end of the second sonic nozzle after being pressed down.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model uses an ultrasonic gas meter module embedded in a sealed fixture. Different flow rates of gas are introduced into the ultrasonic gas meter module. The sensitivity, frequency response, and signal attenuation values ​​fed back by the transducer inside the ultrasonic gas meter module are compared with the sensitivity, frequency response, and signal attenuation values ​​fed back by a qualified transducer to determine whether the ultrasonic gas meter module is qualified. This avoids the subsequent rework and disassembly of unqualified ultrasonic gas meters, saves rework time, and avoids the waste of rework materials.

[0017] 2. This utility model uses a sealing fixture to ensure that gas at different flow rates inside the sonic nozzle device does not leak out. It allows for multiple tests on the ultrasonic gas meter module using gas of varying flow rates, ensuring the accuracy of dynamic testing of the ultrasonic gas meter module and thus improving the accuracy of screening out unqualified ultrasonic gas meter modules. Secondly, the sealing fixture enables the sonic nozzle device to be adapted to different types of ultrasonic gas meter modules for dynamic testing, improving testing efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the sealing tool of this utility model;

[0020] Figure 3 This is an exploded view of the sealing fixture of this utility model;

[0021] Figure 4 This is a schematic diagram of the top plate of this utility model;

[0022] Figure 5 This is an installation diagram of the sealing fixture and ultrasonic gas meter module of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the ultrasonic gas meter module of this utility model;

[0024] Figure 7 This is a schematic diagram of the transducer module of this utility model;

[0025] The attached diagram shows the following labels: 1. Sealing fixture, 2. Ultrasonic gas meter module, 3. Sonic nozzle device, 4. Main control board, 5. Adaptor pipe, 6. Display screen, 11. Inlet pipe, 12. Outlet pipe, 13. Sealed space, 14. Base plate, 15. Top plate, 16. Short side plate, 17. Long side plate, 21. Ultrasonic gas meter housing, 22. Transducer module, 23. Housing, 31. First sonic nozzle, 32. Second sonic nozzle, 33. Control board, 111. Inlet contact part, 121. Outlet contact part, 141. Base plate groove, 151. Top plate groove, 161. Positioning groove, 171. Sealing sleeve, 211. Inlet, 212. Outlet, 221. PCB board, 222. Transducer, 2221. Sealing ring. Detailed Implementation

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figures 1-7As shown, a dynamic detection device for an ultrasonic gas meter module includes a sealing fixture 1, which includes an inlet pipe 11, an outlet pipe 12, and a sealed space 13 located inside the same end; an ultrasonic gas meter module 2 located in the sealed space 13, which includes an ultrasonic gas meter housing 21 and a transducer module 22 mounted on the ultrasonic gas meter housing 21, wherein the ultrasonic gas meter housing 21 has an inlet 211 communicating with the inlet pipe 11 and an outlet 212 communicating with the sealed space 13; a sonic nozzle device 3, which includes a first sonic nozzle 31 communicating with the inlet pipe 11, a second sonic nozzle 32 communicating with the outlet pipe 12, and a control board 33 for controlling the gas flow rate inside the first sonic nozzle 31 and the second sonic nozzle 32; and a main control board 4, one end of which is connected to the transducer module 22 via a wire, and the other end of which is connected to the control board 33 via a wire.

[0028] The transducer module 22 includes a PCB board 221 and transducers 222 located on both sides of the PCB board 221. The transducers 222 are located close to the interior of the ultrasonic gas meter housing 21. A sealing ring 2221 is arranged around the transducers 222 to isolate the interior of the ultrasonic gas meter housing 21 from the external environment, so that the gas introduced by the first sonic nozzle 31 enters only from the inlet 211 and exits only from the outlet 212.

[0029] The main control board 4 is also connected to the display screen 6 via wires.

[0030] Specifically, the first sonic nozzle 31 of the sonic nozzle device 3 is connected to the air inlet pipe 11, and the second sonic nozzle 32 of the sonic nozzle device 3 is connected to the air outlet pipe 12. The control board 33 controls the gas flow rate of the first sonic nozzle 31 to be introduced. The gas enters the inlet 211 of the ultrasonic gas meter module 2 through the air inlet pipe 11 of the sealing fixture 1, and then is discharged into the sealed space 13 through the outlet 212 of the ultrasonic gas meter module 2. Finally, it is discharged from the air outlet pipe 12 and into the second sonic nozzle 32.

[0031] The transducer module 22 located in the ultrasonic gas meter module 2 will transmit a series of electrical signals to the main control board 4 under the action of different flow rates of gas. The main control board 4 will process the signals and display them on the display screen 6. On the other hand, the main control board 4 will feed back the electrical signals transmitted by the transducer module 22 to the control board 33, which will control the change of gas flow inside the first sonic nozzle 31.

[0032] In the ultrasonic gas meter module 2, the transducer 222 located in the ultrasonic gas meter module 2 will change its sensitivity, frequency response, signal attenuation and other values ​​under the action of different flow rates of gas. By comparing the values ​​with those of the transducer 222 in the qualified ultrasonic gas meter, unqualified ultrasonic gas meter modules 2 can be screened out.

[0033] This invention determines whether the ultrasonic gas meter module 2 is qualified by embedding an ultrasonic gas meter module 2 inside a sealed fixture 1 and introducing gas of different flow rates into the ultrasonic gas meter module 2. The values ​​of sensitivity, frequency response, and signal attenuation fed back by the transducer 222 inside the ultrasonic gas meter module 2 are compared with the values ​​of sensitivity, frequency response, and signal attenuation fed back by a qualified transducer 222. This avoids the need for subsequent repair and disassembly of unqualified ultrasonic gas meters, saves repair time, and avoids the waste of repair materials.

[0034] Furthermore, the intake pipe 11 is provided with an intake contact portion 111 that abuts against the front end of the first sonic nozzle 31 after being pressed down, and the exhaust pipe 12 is provided with an exhaust contact portion 121 that abuts against the front end of the second sonic nozzle 32 after being pressed down.

[0035] It should be noted that the first sonic nozzle 31 will only enter the intake pipe 11 after being pressed down, and the gas in the first sonic nozzle 31 will only enter the sealing device 1 from the intake pipe 11 after the front end of the first sonic nozzle 31 abuts against the intake contact part 111 of the intake pipe 11. Similarly, the second sonic nozzle 32 will only enter the exhaust pipe 12 after being pressed down, and the gas in the sealing device 1 will only be discharged from the exhaust pipe 12 and reach the second sonic nozzle 32 after the front end of the second sonic nozzle 32 abuts against the exhaust contact part 121 of the exhaust pipe 12.

[0036] The sealing fixture 1 includes a base plate 14, a top plate 15, a short side plate 16, and a long side plate 17. The short side plate 16 is located on the left and right sides of the base plate 14 and is fixedly mounted on the base plate 14. The long side plate 17 is located on the front and rear sides of the base plate 14 and is fixedly mounted on the base plate 14. The top plate 15 is arranged opposite to the base plate 14 and is connected to the side of the short side plate 16 and the long side plate 17 away from the base plate 14.

[0037] The inner wall of the base plate 14 has a circumferential groove 141. Bolts pass through the groove 141 and the short side plate 16 to connect the base plate 14 and the short side plate 16. Bolts also pass through the groove 141 and the long side plate 17 to connect the base plate 14 and the long side plate 17. The short side plate 16 has positioning grooves 161 at the center of both sides. Bolts pass through the long side plate 17 and the positioning grooves 161 to connect the long side plate 17 and the short side plate 16. The inner wall of the top plate 15 has a circumferential groove 151. Bolts pass through the groove 151 and the short side plate 16 to connect the top plate 15 and the short side plate 16. Bolts also pass through the groove 151 and the long side plate 17 to connect the top plate 15 and the long side plate 17.

[0038] The air inlet pipe 11 and the air outlet pipe 12 are both located on the top plate 15, and the top plate 15 is also provided with a round hole for installing a handle.

[0039] On the one hand, the base plate groove 141, top plate groove 151, and positioning groove 161 facilitate bolt positioning and further tightening, enabling quick connection between the base plate 14, top plate 15, short side plate 16, and long side plate 17. On the other hand, the base plate 14, top plate 15, short side plate 16, and long side plate 17 are relatively thick, and the base plate groove 141 and top plate groove 151 are located on the outer ring of the base plate 14 and top plate 15, while the positioning groove 161 is located in the middle position on both sides of the short side plate 16. The inner wall of the sealing fixture 1 is not damaged, thus improving the sealing performance inside the sealing fixture 1.

[0040] A main control board 4 is provided on the long side plate 17. The wires connecting the main control board 4 and the transducer module 22 pass through the long side plate 17. The wires have a sealing sleeve 171 that isolates the sealed space 13 from the external environment, so that the sealed space 13 is sealed and the gas supplied by the sonic nozzle device 3 does not leak out.

[0041] In order to make the sealing fixture 1 applicable to different models of ultrasonic gas meter modules 2, an adapter pipe 5 is also provided between the air inlet pipe 11 and the inlet 211. The adapter pipe 5 can connect the sealing fixture 1 to the inlet 211 of different models of ultrasonic gas meter modules 2, thereby improving the compatibility of the sealing fixture 1.

[0042] The ultrasonic gas meter module 2 includes a housing 23 that covers the transducer module 22. The housing 23 is used to protect the transducer module 22 from damage by external forces and extend the service life of the transducer module 22.

[0043] This invention uses a sealing fixture 1 to ensure that gases of different flow rates inside the sonic nozzle device 3 do not leak out. It can perform multiple tests on the ultrasonic gas meter module 2 using gases of different flow rates, ensuring the accuracy of dynamic testing of the ultrasonic gas meter module 2 and thus improving the accuracy of screening out unqualified ultrasonic gas meter modules 2. Secondly, the sealing fixture 1 enables the sonic nozzle device 3 to be adapted to different types of ultrasonic gas meter modules 2 for dynamic testing, improving the efficiency of testing.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0045] Although this paper uses many reference numerals from the figures: 1. Sealing fixture, 2. Ultrasonic gas meter module, 3. Sonic nozzle device, 4. Main control board, 5. Adaptor pipe, 6. Display screen, 11. Inlet pipe, 12. Outlet pipe, 13. Sealed space, 14. Base plate, 15. Top plate, 16. Short side plate, 17. Long side plate, 21. Ultrasonic gas meter housing, 22. Transducer module, 23. Housing, 31. First sonic nozzle, 32. Second sonic nozzle, 33. Control board, 111. Inlet contact part, 121. Outlet contact part, 141. Base plate groove, 151. Top plate groove, 161. Positioning groove, 171. Sealing sleeve, 211. Inlet, 212. Outlet, 221. PCB board, 222. Transducer. The terms 2221, sealing ring, etc. are used, but the possibility of using other terms is not excluded; these terms are used only for the purpose of more conveniently describing and explaining the nature of this utility model; interpreting them as any kind of additional limitation is contrary to the spirit of this utility model.

Claims

1. A dynamic detection device for an ultrasonic gas meter module, characterized in that: It includes a sealing fixture (1), which includes an air inlet pipe (11), an air outlet pipe (12) disposed at the same end, and a sealing space (13) located inside therein. The ultrasonic gas meter module (2) is located in a sealed space (13). The ultrasonic gas meter module (2) includes an ultrasonic gas meter housing (21) and a transducer module (22) mounted on the ultrasonic gas meter housing (21). The ultrasonic gas meter housing (21) has an inlet (211) communicating with an air inlet pipe (11) and an outlet (212) communicating with the sealed space (13). The device includes a sonic nozzle device (3), which includes a first sonic nozzle (31) connected to the air inlet pipe (11), a second sonic nozzle (32) connected to the air outlet pipe (12), and a control plate (33) for controlling the gas flow rate of the first sonic nozzle (31) and the second sonic nozzle (32). Includes a main control board (4), one end of which is connected to the transducer module (22) via a wire, and the other end of which is connected to the control board (33) via a wire.

2. The ultrasonic gas meter module dynamic detection device according to claim 1, characterized in that: The transducer module (22) includes a PCB board (221) and transducers (222) located on both sides of the PCB board (221). The transducers (222) are located close to the interior of the ultrasonic gas meter housing (21). A sealing ring (2221) is provided around the transducers (222) to isolate the interior of the ultrasonic gas meter housing (21) from the external environment.

3. The ultrasonic gas meter module dynamic detection device according to claim 2, characterized in that: The ultrasonic gas meter module (2) includes a housing (23) covering the transducer module (22).

4. The ultrasonic gas meter module dynamic detection device according to claim 1, characterized in that: The sealing fixture (1) includes a base plate (14), a top plate (15), a short side plate (16), and a long side plate (17). The short side plate (16) is located on the left and right sides of the base plate (14) and is fixedly mounted on the base plate (14). The long side plate (17) is located on the front and rear sides of the base plate (14) and is fixedly mounted on the base plate (14). The top plate (15) is arranged opposite to the base plate (14) and is connected to the side of the short side plate (16) and the long side plate (17) away from the base plate (14).

5. The ultrasonic gas meter module dynamic detection device according to claim 4, characterized in that: The inner wall of the base plate (14) has a base plate groove (141) around it. Bolts pass through the base plate groove (141) and the short side plate (16) to connect the base plate (14) and the short side plate (16). Bolts pass through the base plate groove (141) and the long side plate (17) to connect the base plate (14) and the long side plate (17). The short side plate (16) has a positioning groove (161) at the center of both sides. Bolts pass through the long side plate (17) and the positioning groove (161) to connect the long side plate (17) and the short side plate (16). The inner wall of the top plate (15) has a top plate groove (151) around it. Bolts pass through the top plate groove (151) and the short side plate (16) to connect the top plate (15) and the short side plate (16). Bolts pass through the top plate groove (151) and the long side plate (17) to connect the top plate (15) and the long side plate (17).

6. The ultrasonic gas meter module dynamic detection device according to claim 5, characterized in that: The air inlet pipe (11) and air outlet pipe (12) are both located on the top plate (15).

7. The ultrasonic gas meter module dynamic detection device according to claim 6, characterized in that: The long side plate (17) is provided with a main control board (4), and the wires connecting the main control board (4) and the transducer module (22) pass through the long side plate (17). The wires have a sealing sleeve (171) that isolates the sealed space (13) from the external environment.

8. The ultrasonic gas meter module dynamic detection device according to claim 1, characterized in that: A transfer pipe (5) is also provided between the air intake pipe (11) and the inlet (211).

9. The ultrasonic gas meter module dynamic detection device according to claim 1, characterized in that: The main control board (4) is also connected to the display screen (6) via wires.

10. The ultrasonic gas meter module dynamic detection device according to claim 1, characterized in that: The air inlet pipe (11) is provided with an air inlet contact part (111) that abuts against the front end of the first sonic nozzle (31) after being pressed down, and the air outlet pipe (12) is provided with an air outlet contact part (121) that abuts against the front end of the second sonic nozzle (32) after being pressed down.

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