High-precision digital technology Internet of Things ultrasonic gas meter

Abstract

The invention discloses a high-precision digital technology internet of things ultrasonic gas meter, and particularly relates to the field of gas meters, the ultrasonic gas meter comprises an upper shell and a lower shell which are connected with each other, and the upper end of the upper shell is provided with a gas inlet and a gas outlet; a protective cylinder is arranged in the upper shell and comprises an outer cylinder, an inner pipe is arranged on the inner side of the outer cylinder and communicated with the air inlet, an outer pipe is arranged on the outer side of the inner pipe, an air vent is formed in one side of the outer cylinder, a bottom pipe is arranged at the bottom of the inner pipe, and an elastic bag is arranged in the bottom pipe. According to the gas meter, the protective cylinder, the elastic bag and the plugging device are arranged, when water enters the gas pipeline and flows into the gas meter, the channel between the inner pipe and the outer pipe is triggered to be closed through deformation of the elastic bag, so that the water is prevented from continuously flowing, the upper shell and the lower shell do not need to be disassembled during maintenance, the water is directly poured out and aired or blow-dried, and the maintenance cost is reduced. The integrity of the gas meter is guaranteed, and the gas meter can be repeatedly used.

Description

Technical Field

[0001] The present invention relates to the technical field of gas meters, and more particularly to a high-precision digital technology Internet of Things ultrasonic gas meter. Background Art

[0002] Ultrasonic gas meters use ultrasonic technology to measure gas flow. They offer advantages such as high accuracy, high stability, and a wide measurement range. Their operating principle is based on the propagation characteristics of ultrasonic waves in fluids. When ultrasonic waves propagate through gas, their propagation speed is affected by the gas flow rate. By measuring the time difference between the propagation of ultrasonic waves in the gas flow and the propagation time in the gas flow, the gas flow rate can be calculated, and thus the gas flow rate.

[0003] The current ultrasonic gas meter structure includes a shell, a flow metering device, and a valve. The valve is in the open state by default, allowing gas to be transported to the gas appliance through the pipeline. However, under abnormal circumstances, such as arrears or leakage, the valve will close.

[0004] However, when encountering heavy rain, floods or long-term water accumulation around the pipeline, or when the user mistakenly connects the water pipeline to the gas pipeline, water may enter the pipeline and then enter the gas meter, causing the gas meter to be damaged and unusable. Since the two outer shells of the gas meter are installed together by metal edging, it is a non-detachable design. Therefore, if water enters, it cannot be disassembled and repaired and can only be scrapped. Summary of the Invention

[0005] The present invention provides a high-precision digital technology Internet of Things ultrasonic gas meter, which aims to solve the problem that water entering the gas meter will cause the gas meter to be damaged and unusable.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-precision digital technology Internet of Things ultrasonic gas meter, comprising an upper shell and a lower shell connected to each other, the upper end of the upper shell having an air inlet and an air outlet; a protective cylinder is provided inside the upper shell, the protective cylinder comprises an outer cylinder, the inner side of the outer cylinder has an inner tube, the inner tube is connected to the air inlet, an outer tube is provided on the outer side of the inner tube, a vent is provided on one side of the outer tube, the bottom of the inner tube has a bottom tube, an elastic bag is provided inside the bottom tube, and the upper end of the elastic bag is fixedly connected to the upper part of the bottom tube; a blocking device is provided for the channel between the inner tube and the outer tube, and after water enters from the inner tube and flows into the interior of the elastic bag, the blocking device blocks the channel between the inner tube and the outer tube.

[0007] In a preferred embodiment, the sealing device includes a fixed disk, the upper end of the fixed disk is fixedly connected to the bottom of the inner tube, the lower end of the fixed disk is fixedly connected to the side wall of the outer tube, a plurality of through openings are opened in the circumferential direction of the fixed disk, and a movable disk is provided at the upper end of the outer wall of the inner tube. Both the fixed disk and the movable disk are conical. When the passage between the inner tube and the outer tube is blocked, the movable disk moves downward and fits into the upper surface of the fixed disk.

[0008] In a preferred embodiment, the bottom of the elastic bag is fixedly connected to the base, both sides of the bottom of the movable disk are fixedly connected to connecting rods, the bottom ends of the connecting rods are fixedly connected to the base, sliders are provided on both sides of the base, and sliding grooves are provided on both sides of the bottom tube, and the sliders slide inside the sliding grooves.

[0009] In a preferred embodiment, a flow meter and a control valve are provided inside the upper shell, and the air vent is connected to the air outlet through the flow meter and the control valve in turn. A switch is provided at the bottom of the bottom tube, and the elastic bag filled with water deforms downward to trigger the switch, causing the control valve to close the air outlet.

[0010] In a preferred embodiment, the switch includes metal sheet 1 and metal sheet 2, which are fixedly connected to the two sides of the bottom tube respectively. When the base contacts metal sheet 1 and metal sheet 2, the control valve becomes conductive, thereby causing the control valve to close the air outlet.

[0011] In a preferred embodiment, a metal block is fixedly connected to the bottom of the base, a magnet is fixedly connected to the bottom of the inner side of the bottom tube, and the elastic bag filled with water deforms downward so that the metal block and the magnet are attracted to each other.

[0012] In a preferred embodiment, a release device is provided at the bottom of the bottom tube, and the release device includes a fixed sleeve fixedly connected to the bottom of the bottom tube, a pressure rod is vertically inserted into the interior of the fixed sleeve, and a spring is provided on the outer sleeve of the pressure rod, which is used to reset the pressure rod downward, and the magnet is an annular structure, and the upper end of the pressure rod passes through the bottom of the bottom tube and extends to the middle position of the magnet.

[0013] In a preferred embodiment, the flow meter includes an trachea, and transducer 1 and transducer 2 are respectively provided on both sides of the upper end of the trachea, and the bottom ends of transducer 1 and transducer 2 are inclined toward the middle of the trachea, one end of the trachea is connected to the vent, and the other end of the trachea is connected to the control valve.

[0014] In a preferred embodiment, the control valve includes a valve body, which has valve port one and valve port two. Valve port one is connected to one end of the air pipe, and valve port two is connected to the air outlet. A valve stem is movably connected below valve port two. A motor is installed at the bottom of the valve body, and a screw rod is installed at the output end of the motor. The screw rod is inserted into the valve stem and is threadedly connected to the valve stem.

[0015] In a preferred embodiment, it includes a perception layer, a network layer, a platform layer, and an application layer. The perception layer monitors gas usage through a gas meter and uploads data to the network layer through a communication module. The network layer is used to transmit data collected by the perception layer to the platform layer. The platform layer performs data storage and analysis. The application layer includes a mobile terminal and a Web management system. Users can view gas usage through the mobile terminal and make payments. The Web management system performs user management and data analysis.

[0016] The technical effects and advantages of the present invention are as follows: the present invention provides a protective tube, an elastic bag and a sealing device. When water enters the gas pipeline and flows into the gas meter, the deformation of the elastic bag triggers the closure of the channel between the inner tube and the outer tube, thereby preventing the water from continuing to flow. Moreover, during maintenance, there is no need to disassemble the upper shell and the lower shell. The water can be directly poured out and dried or blown dry, thereby ensuring the integrity of the gas meter and allowing it to be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is an exploded view of the present invention.

[0019] Figure 3 It is a cross-sectional view of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the protection tube of the present invention.

[0021] Figure 5 For the present invention Figure 4 sectional view of .

[0022] Figure 6 It is a schematic diagram of the local structure of the present invention.

[0023] Figure 7 For the present invention Figure 5 A magnified view of the local structure at point A.

[0024] Figure 8 It is a structural schematic diagram of the flow meter and control valve of the present invention.

[0025] Figure 9 It is a cross-sectional view of the control valve of the present invention.

[0026] The accompanying drawings are marked as follows: 1. Upper shell; 11. Air inlet; 12. Air outlet; 2. Lower shell; 3. Protective tube; 31. Outer tube; 311. Vent; 32. Inner tube; 33. Outer tube; 34. Bottom tube; 341. Slide; 4. Elastic bag; 41. Base; 411. Slider; 5. Blocking device; 51. Fixed disk; 52. Movable disk; 53. Through port; 6. Connecting rod; 7. Switch; 71. Metal sheet 1; 72. Metal sheet 2; 8. Metal block; 81. Magnet; 9. Release device; 91. Fixing sleeve; 92. Pressure rod; 93. Spring; 100. Flow meter; 101. Air pipe; 102. Transducer 1; 103. Transducer 2; 110. Control valve; 111. Valve body; 1111. Valve port 1; 1112. Valve port 2; 112. Valve stem; 113. Motor; 114. Screw. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Refer to the instruction manual Figures 1-9 A high-precision digital technology Internet of Things ultrasonic gas meter comprises an interconnected upper shell 1 and a lower shell 2. The upper end of the upper shell 1 has an air inlet 11 and an air outlet 12. The edges of the upper shell 1 and the lower shell 2 extend outward and are bound together by a metal edging, forming a non-detachable connection. A protective tube 3 is disposed within the upper shell 1. The protective tube 3 comprises an outer tube 31, within which an inner tube 32 is disposed. The inner tube 32 communicates with the air inlet 11. An outer tube 33 is disposed outside the inner tube 32. A vent 311 is disposed on one side of the outer tube 31. The bottom of the inner tube 32 has a bottom tube 34, within which an elastic bag 4 is disposed. The upper end of the elastic bag 4 is fixedly connected to the upper end of the bottom tube 34. The elastic bag 4 is made of natural rubber. A blocking device 5 is provided in the passage between the inner tube 32 and the outer tube 33. When water enters the inner tube 32 and flows into the elastic bag 4, the blocking device 5 blocks the passage between the inner tube 32 and the outer tube 33.

[0029] In this embodiment, if Figure 5 and Figure 6As shown, the blocking device 5 includes a fixed disk 51, the upper end of the fixed disk 51 is fixedly connected to the bottom of the inner tube 32, and the lower end of the fixed disk 51 is fixedly connected to the side wall of the outer tube 33. A plurality of through openings 53 are opened in the circumferential direction of the fixed disk 51, and a movable disk 52 is provided at the upper end of the outer wall of the inner tube 32. Both the fixed disk 51 and the movable disk 52 are conical. When blocking the channel between the inner tube 32 and the outer tube 33, the movable disk 52 moves downward and fits into the upper surface of the fixed disk 51.

[0030] It should be noted that, in a normal state, the movable disk 52 is sleeved on the uppermost end of the outer tube 31 , and a magnet may be provided on the outer wall of the inner tube 32 to adsorb the movable disk 52 on the inner tube 32 .

[0031] Further, if Figure 5 and Figure 6 As shown, the bottom of the elastic bag 4 is fixedly connected to the base 41, and the two sides of the bottom of the movable disk 52 are fixedly connected to the connecting rod 6. The bottom end of the connecting rod 6 is fixedly connected to the base 41, and sliders 411 are provided on both sides of the base 41. Slide grooves 341 are opened on both sides of the bottom tube 34, and the sliders 411 slide inside the slide grooves 341.

[0032] It should be noted that the connecting rod 6 passes downward through the fixed disk 51 and the through-hole 53, and is fixedly connected to the upper surface of the base 41. The slider 411 slides within the chute 341, so that the base 41 can only move vertically without deflection. If water enters the gas meter, water enters the inner tube 32 through the air inlet 11 and then flows downward from the inner tube 32 into the elastic bag 4. Under the action of gravity, the elastic bag 4 deforms downward, causing the base 41 to move downward. The base 41 then drives the movable disk 52 downward via the connecting rod 6, causing the movable disk 52 to mate with the through-hole 53, thereby achieving the purpose of blocking the gas meter.

[0033] Further, if Figure 5 and Figure 7 As shown, a metal block 8 is fixedly connected to the bottom of the base 41, and a magnet 81 is fixedly connected to the bottom inside the bottom tube 34. The elastic bag 4 is filled with water and deforms downward, causing the metal block 8 and the magnet 81 to attract each other.

[0034] It should be noted that, when the base 41 moves to the lowest point, the metal block 8 and the magnet 81 are attracted to each other, and at this time, the movable plate 52 and the fixed plate 51 are completely in close contact.

[0035] In this embodiment, the specific implementation is as follows: Under normal circumstances, gas enters the interior of the inner tube 32 through the air inlet 11. The gas then passes through the inner tube 32, the passage between the outer tube 33 and the inner tube 32, the outer cylinder 31, and the vent 311 before being discharged from the air outlet 12. When water enters the gas pipeline, water enters the inner tube 32 through the air inlet 11 and flows downward along the inner tube 32 into the elastic bag 4. Under the action of gravity, the elastic bag 4 deforms downward, causing the base 41 to move downward. The slider 411 slides within the slide groove 341. The base 41 drives the movable plate 52 downward via the connecting rod 6, so that the lower surface of the movable plate 52 contacts the upper surface of the fixed plate 51, thereby sealing the passage between the inner tube 32 and the outer tube 33. The metal block 8 and the magnet 81 are attracted to each other. At this point, the water cannot continue to flow through the passage between the inner tube 32 and the outer tube 33 and is instead confined within the inner tube 32 and the elastic bag 4. During maintenance, the gas meter is directly removed from the gas pipeline, that is, the gas pipe is removed from the air inlet 11 and the air outlet 12. After removing the gas meter, the gas meter is turned upside down. At this time, the air inlet 11 is facing downward, and the water inside the inner tube 32 and the elastic bag 4 will flow out along the conical surface of the fixing plate 51 and the inner tube 32, and the remaining water can be dried or blown dry with a hair dryer.

[0036] The above technical solution provides a protective tube 3, an elastic bag 4 and a sealing device 5. When water enters the gas pipeline and flows into the gas meter, the deformation of the elastic bag 4 triggers the closure of the channel between the inner tube 32 and the outer tube 33, thereby preventing the water from continuing to flow. Moreover, during maintenance, there is no need to disassemble the upper shell 1 and the lower shell 2. The water can be directly poured out and dried or blown dry, thereby ensuring the integrity of the gas meter and allowing it to be reused.

[0037] Furthermore, if the metal block 8 and magnet 81 are not provided, the base 41 will move downward under the action of gravity when pouring water, causing the elastic bag 4 to have many wrinkles. A large amount of water will be trapped in the wrinkles, resulting in incomplete pouring of the water and making it difficult to subsequently dry it in air or by airing. However, when the metal block 8 and magnet 81 are provided, the elastic bag 4 remains in a stretched state during pouring due to the mutual attraction between the metal block 8 and magnet 81, and thus does not wrinkle, thereby allowing the water to be poured out more completely.

[0038] Refer to the instruction manual Figure 4-Figure 7 After the gas meter is overhauled, the elastic bag 4 needs to be reset, that is, the elastic bag 4 needs to be restored to its original shape so that the movable disk 52 moves upward to the uppermost end of the inner tube 32. Therefore, the following technical solution is proposed.

[0039] Specifically, a release device 9 is provided at the bottom of the bottom tube 34, and the release device 9 includes a fixing sleeve 91 fixedly connected to the bottom of the bottom tube 34. A pressure rod 92 is vertically inserted into the interior of the fixing sleeve 91, and a spring 93 is provided on the outer side of the pressure rod 92. The spring 93 is used to reset the pressure rod 92 downward. The magnet 81 is a ring structure, and the upper end of the pressure rod 92 passes through the bottom of the bottom tube 34 and extends to the middle position of the magnet 81.

[0040] It should be noted that when the elastic bag 4 and the movable disk 52 need to be reset, the gas meter is turned downward, and then the pressure rod 92 is pressed. The spring 93 is compressed, and the pressure rod 92 passes through the middle of the magnet 81 to push the metal block 8 upward, so that the metal block 8 is separated from the magnet 81. Under the action of gravity, the base 41, the connecting rod 6 and the movable disk 52 move downward until the movable disk 52 is adsorbed and fixed to the magnet on the side wall of the inner tube 32.

[0041] Refer to the instruction manual Figure 2-Figure 3 , Figure 8 and Figure 9 The flow meter 100 includes an air pipe 101, and transducer 102 and transducer 2 103 are respectively arranged on both sides of the upper end of the air pipe 101. The bottom ends of transducer 102 and transducer 2 103 are inclined toward the middle of the air pipe 101. One end of the air pipe 101 is connected to the vent 311, and the other end of the air pipe 101 is connected to the control valve 110.

[0042] It should be noted that flow meter 100 uses the time-difference method to measure gas flow. This method exploits the fact that sound waves propagate at different speeds in a fluid depending on the direction of gas flow. The difference between the downstream and upstream propagation times is measured to calculate the gas flow velocity and flow rate. For example, transducer 102 transmits an ultrasonic wave, which is then received by transducer 2 103, and vice versa. The upstream propagation time is the downstream propagation time, while the downstream propagation time is the upstream propagation time. Once the gas flow velocity is determined, the cross-sectional area of ​​gas pipe 101 is used to calculate the gas volume. Using ultrasonic methods to measure gas usage offers high accuracy.

[0043] Refer to the instruction manual Figure 5 and Figure 8-Figure 9 A flow meter 100 and a control valve 110 are provided inside the upper shell 1. The vent 311 is connected to the air outlet 12 through the flow meter 100 and the control valve 110 in sequence. A switch 7 is provided at the bottom of the bottom tube 34. The elastic bag 4 is filled with water and deforms downward, triggering the switch 7, so that the control valve 110 closes the air outlet 12.

[0044] Furthermore, the switch 7 includes a metal sheet 1 71 and a metal sheet 2 72 , which are fixedly connected to both sides of the bottom tube 34 , respectively. When the base 41 contacts the metal sheet 1 71 and the metal sheet 2 72 , the control valve 110 becomes conductive, thereby causing the control valve 110 to close the air outlet 12 .

[0045] Furthermore, the control valve 110 includes a valve body 111, which has a valve port 1 1111 and a valve port 2 1112. The valve port 1 1111 is connected to one end of the air pipe 101, and the valve port 2 1112 is connected to the air outlet 12. A valve stem 112 is movably connected below the valve port 2 1112. A motor 113 is installed at the bottom of the valve body 111, and a screw rod 114 is installed at the output end of the motor 113. The screw rod 114 is inserted into the valve stem 112 and is threadedly connected to the valve stem 112.

[0046] It should be noted that one pole of motor 113 is connected to a power source, and the other pole is connected to the power source through metal sheet 1 71 and metal sheet 2 72. The power source is, in fact, a dry cell battery installed in the gas meter. When base 41 moves to its lowest point, base 41 contacts metal sheet 1 71 and metal sheet 2 72, creating electrical conduction between metal sheet 1 71 and metal sheet 2 72 at base 41. This causes motor 113 to rotate screw rod 114, which in turn drives valve stem 112 upward, closing valve port 2 1112. The lower end of valve stem 112 is elliptical and interlocks with valve body 111, preventing it from rotating and only allowing vertical movement.

[0047] In this embodiment, a perception layer, a network layer, a platform layer, and an application layer are also provided. The perception layer monitors gas usage through a gas meter and uploads the data to the network layer through a communication module. The network layer is used to transmit the data collected by the perception layer to the platform layer. The platform layer performs data storage and analysis. The application layer includes a mobile terminal and a Web management system. Users can view gas usage through the mobile terminal and make payments. The Web management system performs user management and data analysis.

[0048] It should be noted that the perception layer, as the front end for data collection, monitors users' gas usage in real time through gas meters and, relying on the built-in communication module, accurately uploads the collected metering data to the network layer. The network layer securely and efficiently transmits the gas usage data collected by the perception layer to the platform layer, ensuring the smooth flow of the data link. The platform layer reliably stores the transmitted data. The application layer provides diversified services for different user groups: the mobile terminal focuses on user convenience, allowing users to view their gas usage details and consumption trends at any time and complete payment operations directly online; the web management system serves the operator, implementing back-end management functions such as full lifecycle management of user information and multi-dimensional statistical analysis of gas usage data, helping to improve operational efficiency.

[0049] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-precision digital technology Internet of Things ultrasonic gas meter, characterized by: It comprises an upper shell (1) and a lower shell (2) connected to each other, wherein the upper end of the upper shell (1) has an air inlet (11) and an air outlet (12); A protective tube (3) is provided inside the upper shell (1), and the protective tube (3) includes an outer tube (31), an inner tube (32) is provided on the inner side of the outer tube (31), and the inner tube (32) is communicated with the air inlet (11). An outer tube (33) is provided on the outer side of the inner tube (32), and a vent (311) is provided on one side of the outer tube (31). The bottom of the inner tube (32) is provided with a bottom tube (34), and an elastic bag (4) is provided inside the bottom tube (34), and the upper end of the elastic bag (4) is fixedly connected to the upper end of the bottom tube (34); The passage between the inner tube (32) and the outer tube (33) is provided with a blocking device (5). After water enters the inner tube (32) and flows into the elastic bag (4), the blocking device (5) blocks the passage between the inner tube (32) and the outer tube (33).

2. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 1 is characterized by: The blocking device (5) includes a fixed disk (51), the upper end of the fixed disk (51) is fixedly connected to the bottom of the inner tube (32), and the lower end of the fixed disk (51) is fixedly connected to the side wall of the outer tube (33). The fixed disk (51) is provided with a plurality of through openings (53) in the circumferential direction, and a movable disk (52) is provided at the upper end of the outer wall of the inner tube (32). Both the fixed disk (51) and the movable disk (52) are conical. When blocking the passage between the inner tube (32) and the outer tube (33), the movable disk (52) moves downward and fits the upper surface of the fixed disk (51).

3. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 2, characterized in that: The bottom of the elastic bag (4) is fixedly connected to a base (41), both sides of the bottom of the movable plate (52) are fixedly connected to connecting rods (6), the bottom end of the connecting rod (6) is fixedly connected to the base (41), and both sides of the base (41) are provided with sliders (411), and both sides of the bottom tube (34) are provided with sliding grooves (341), and the sliders (411) slide inside the sliding grooves (341).

4. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 3 is characterized by: A flow meter (100) and a control valve (110) are provided inside the upper shell (1); the vent (311) is connected to the air outlet (12) via the flow meter (100) and the control valve (110) in sequence; a switch (7) is provided at the bottom of the bottom tube (34); the elastic bag (4) is filled with water and deforms downward, triggering the switch (7), causing the control valve (110) to close the air outlet (12).

5. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 4 is characterized by: The switch (7) comprises a first metal sheet (71) and a second metal sheet (72), wherein the first metal sheet (71) and the second metal sheet (72) are fixedly connected to two sides of the bottom tube (34), respectively. When the base (41) contacts the first metal sheet (71) and the second metal sheet (72), the control valve (110) becomes conductive, thereby causing the control valve (110) to close the air outlet (12).

6. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 5, characterized in that: A metal block (8) is fixedly connected to the bottom of the base (41), a magnet (81) is fixedly connected to the bottom of the inner side of the bottom tube (34), and the elastic bag (4) is deformed downward when filled with water, so that the metal block (8) and the magnet (81) are attracted to each other.

7. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 6, characterized in that: A release device (9) is provided at the bottom of the bottom tube (34), and the release device (9) includes a fixing sleeve (91) fixedly connected to the bottom of the bottom tube (34), a pressure rod (92) is vertically inserted into the interior of the fixing sleeve (91), and a spring (93) is provided on the outer sleeve of the pressure rod (92), and the spring (93) is used to reset the pressure rod (92) downward. The magnet (81) is an annular structure, and the upper end of the pressure rod (92) passes through the bottom of the bottom tube (34) and extends to the middle position of the magnet (81).

8. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 7, characterized in that: The flow meter (100) includes an air pipe (101), and transducer 1 (102) and transducer 2 (103) are respectively provided on both sides of the upper end of the air pipe (101), and the bottom ends of transducer 1 (102) and transducer 2 (103) are arranged obliquely toward the middle of the air pipe (101), one end of the air pipe (101) is connected to the vent (311), and the other end of the air pipe (101) is connected to the control valve (110).

9. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 8, characterized in that: The control valve (110) includes a valve body (111), the valve body (111) having a valve port 1 (1111) and a valve port 2 (1112), the valve port 1 (1111) being connected to one end of the air pipe (101), the valve port 2 (1112) being connected to the air outlet (12), a valve stem (112) being movably connected below the valve port 2 (1112), a motor (113) being installed at the bottom of the valve body (111), a screw rod (114) being installed at the output end of the motor (113), the screw rod (114) being inserted into the valve stem (112) and being threadedly connected to the valve stem (112).

10. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 9, characterized in that: It includes perception layer, network layer, platform layer and application layer. The perception layer monitors gas usage through gas meter and uploads data to network layer through communication module. The network layer is used to transmit data collected by perception layer to platform layer. The platform layer performs data storage and analysis. The application layer includes mobile terminal and Web management system. Users can view gas usage through mobile terminal and make payment. The Web management system performs user management and data analysis.

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