High-precision digital technology internet of things ultrasonic gas meter

Abstract

The application discloses a high-precision digital technology Internet of Things ultrasonic gas meter, and particularly relates to the field of gas meters, which comprises an upper shell and a lower shell connected with each other, the upper end of the upper shell is provided with an air inlet and an air outlet; the inside of the upper shell is provided with a protection cylinder, the protection cylinder comprises an outer cylinder, the inner side of the outer cylinder is provided with an inner tube, the inner tube is communicated with the air inlet, the outer side of the inner tube is provided with an outer tube, one side of the outer cylinder is provided with an air vent, the bottom of the inner tube is provided with a bottom tube, and the inside of the bottom tube is provided with an elastic bag. The protection cylinder, the elastic bag and the plugging device are arranged, when water flows into the gas meter through the gas pipeline, the channel between the inner tube and the outer tube is closed by the deformation of the elastic bag, so that the water continues to flow is prevented, and when the maintenance is carried out, the upper shell and the lower shell do not need to be disassembled, the water can be directly poured out and dried, the integrity of the gas meter is ensured, and the gas meter can be repeatedly used.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas meters, more particularly, the present application relates to a high-precision digital internet-of-things ultrasonic gas meter. BACKGROUND

[0002] An ultrasonic gas meter is an instrument that measures gas flow using ultrasonic technology. It has advantages such as high precision, high stability, and wide measurement range. Its working principle is mainly based on the propagation characteristics of ultrasonic waves in a fluid. When ultrasonic waves propagate in gas, their propagation speed is affected by the flow rate of the gas. By measuring the time difference between the upstream and downstream propagation of ultrasonic waves in gas, the flow rate of gas can be calculated, and thus the flow rate of gas can be obtained.

[0003] The current structure of an ultrasonic gas meter includes a housing, a flow metering device, and a valve. The valve is in an open state by default, allowing gas to be transported through the pipeline to the gas appliance. However, in abnormal situations such as non-payment or leakage, the valve will be closed.

[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 damage to the gas meter and making it unusable. Since the two housings of the gas meter are installed together by metal edging and are not designed to be disassembled, if water enters, it cannot be disassembled for repair and can only be scrapped. SUMMARY

[0005] The present application provides a high-precision digital internet-of-things ultrasonic gas meter, which solves the problem of water entering the gas meter causing damage to the gas meter and making it unusable.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a high-precision digital internet-of-things ultrasonic gas meter, comprising an upper housing and a lower housing connected to each other, the upper housing having an air inlet and an air outlet at the upper end; the inside of the upper housing is provided with a protection cylinder, the protection cylinder comprises an outer cylinder, the inner side of the outer cylinder has an inner tube, the inner tube is in communication with the air inlet, the outer side of the inner tube is provided with an outer tube, one side of the outer cylinder is provided with an air vent, the bottom of the inner tube has a bottom tube, the inside of the bottom tube is provided with an elastic bag, the upper end of the elastic bag is fixedly connected with the upper end of the bottom tube; the channel between the inner tube and the outer tube is provided with a plugging device, after water enters the inner tube and flows into the inside of the elastic bag, the plugging device plugs the channel between the inner tube and the outer tube.

[0007] In a preferred implementation, the sealing device comprises a fixed disc, the upper end of the fixed disc is fixedly connected with the bottom of the inner tube, the lower end of the fixed disc is fixedly connected with the side wall of the outer tube, a plurality of through holes are arranged in the circumferential direction of the fixed disc, the upper end of the outer wall of the inner tube is provided with a movable disc, the fixed disc and the movable disc are both conical, and the movable disc is moved downward to be attached to the upper surface of the fixed disc when the passage between the inner tube and the outer tube is sealed.

[0008] In a preferred implementation, the bottom of the elastic bag is fixedly connected with a base, the two sides of the bottom of the movable disc are both fixedly connected with connecting rods, the bottom end of the connecting rod is fixedly connected with the base, the two sides of the base are both provided with sliding blocks, the two sides of the bottom tube are both provided with sliding grooves, and the sliding blocks slide in the sliding grooves.

[0009] In a preferred implementation, the inside of the upper shell is provided with a flow meter and a control valve, the air vent is in communication with the air outlet through the flow meter and the control valve in sequence, the bottom of the bottom tube is provided with a switch, and the elastic bagged water is deformed downward to trigger the switch to make the control valve close the air outlet.

[0010] In a preferred implementation, the switch comprises a metal sheet one and a metal sheet two, the metal sheet one and the metal sheet two are respectively fixedly connected with the two sides of the bottom tube, and the base is in contact with the metal sheet one and the metal sheet two to make the control valve conduct electricity, so that the control valve closes the air outlet.

[0011] In a preferred implementation, the bottom of the base is fixedly connected with a metal block, the bottom inside of the bottom tube is fixedly connected with a magnet, and the elastic bagged water is deformed downward to make the metal block and the magnet mutually adsorb.

[0012] In a preferred implementation, the bottom of the bottom tube is provided with a release device, the release device comprises a fixed sleeve fixedly connected with the bottom of the bottom tube, a pressure rod is vertically inserted into the fixed sleeve, a spring is sleeved outside the pressure rod, the spring is used for resetting the pressure rod downward, the magnet is in a ring structure, and the upper end of the pressure rod extends to the middle position of the magnet through the bottom of the bottom tube.

[0013] In a preferred implementation, the flow meter comprises an air tube, a transducer one and a transducer two are arranged on the two sides of the upper end of the air tube, the bottom ends of the transducer one and the transducer two are obliquely arranged towards the middle part of the air tube, one end of the air tube is in communication with the air vent, and the other end of the air tube is in communication with the control valve.

[0014] In a preferred implementation, the control valve comprises a valve body, the valve body has a valve port one and a valve port two, the valve port one is in communication with one end of the air tube, the valve port two is in communication with the air outlet, a valve rod is movably inserted below the valve port two, a motor is installed at the bottom of the valve body, a lead screw is installed at the output end of the motor, and the lead screw is inserted into the valve rod and is in threaded connection with the valve rod.

[0015] In a preferred embodiment, the application comprises 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 for transmitting data collected by the perception layer to the platform layer, the platform layer stores and analyzes data, the application layer comprises a mobile terminal and a Web management system, users can check gas usage through the mobile terminal and make payments, and the Web management system manages users and analyzes data.

[0016] Technical effects and advantages of the application: the protective cylinder, elastic bag and plugging device are arranged, when water flows into the gas meter through the gas pipeline, the passage between the inner pipe and the outer pipe is closed by the deformation of the elastic bag, so that the water continues to flow, and when maintenance is performed, the upper shell and the lower shell do not need to be disassembled, water can be directly poured out and dried, the integrity of the gas meter is guaranteed, and the gas meter can be repeatedly used. BRIEF DESCRIPTION OF DRAWINGS

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

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

[0019] Figure 3 It is a sectional view of the application.

[0020] Figure 4 It is a schematic diagram of the structure of the protective cylinder of the application.

[0021] Figure 5 It is a sectional view of the application Figure 4 .

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

[0023] Figure 7 It is an enlarged view of the local structure at A in the application Figure 5 .

[0024] Figure 8 It is a schematic diagram of the structure of the flow meter and control valve of the application.

[0025] Figure 9 It is a sectional view of the control valve of the application.

[0026] The reference signs are: 1, upper shell; 11, air inlet; 12, air outlet; 2, lower shell; 3, protection cylinder; 31, outer cylinder; 311, air vent; 32, inner tube; 33, outer tube; 34, bottom tube; 341, sliding groove; 4, elastic bag; 41, base; 411, sliding block; 5, plugging device; 51, fixed disc; 52, movable disc; 53, through port; 6, connecting rod; 7, switch; 71, metal sheet one; 72, metal sheet two; 8, metal block; 81, magnet; 9, release device; 91, fixed sleeve; 92, pressing rod; 93, spring; 100, flowmeter; 101, air pipe; 102, transducer one; 103, transducer two; 110, control valve; 111, valve body; 1111, valve port one; 1112, valve port two; 112, valve rod; 113, motor; 114, screw rod. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] Referring to the drawings in the description Figures 1-9 A high-precision digital technology Internet of Things ultrasonic gas meter, comprising an upper shell 1 and a lower shell 2 connected to each other, the upper end of the upper shell 1 having an air inlet 11 and an air outlet 12; wherein the edges of the upper shell 1 and the lower shell 2 extend outwardly and are wrapped together by metal edge covering, being a non-detachable connection. The inside of the upper shell 1 is provided with a protection cylinder 3, the protection cylinder 3 comprising an outer cylinder 31, the inner side of the outer cylinder 31 having an inner tube 32, the inner tube 32 being in communication with the air inlet 11, the outer side of the inner tube 32 being provided with an outer tube 33, one side of the outer cylinder 31 being provided with an air vent 311, the bottom of the inner tube 32 having a bottom tube 34, the inside of the bottom tube 34 being provided with an elastic bag 4, the upper end of the elastic bag 4 being fixedly connected to the upper end of the bottom tube 34; wherein the elastic bag 4 is made of natural rubber. The passage between the inner tube 32 and the outer tube 33 is provided with a plugging device 5, after water enters from the inner tube 32 and flows into the inside of the elastic bag 4, the plugging device 5 blocks the passage between the inner tube 32 and the outer tube 33.

[0029] In this embodiment, as Figure 5 and Figure 6As shown, the blocking device 5 comprises a fixed disc 51, the upper end of which is fixedly connected with the bottom of the inner tube 32, the lower end of which is fixedly connected with the sidewall of the outer tube 33, and a plurality of through ports 53 are arranged in the circumferential direction of the fixed disc 51, and the upper end of the outer wall of the inner tube 32 is provided with a movable disc 52, and the fixed disc 51 and the movable disc 52 are both conical, and when the passage between the inner tube 32 and the outer tube 33 is blocked, the movable disc 52 is moved downward to be attached to the upper surface of the fixed disc 51.

[0030] It should be noted that, in the normal state, the movable disc 52 is sleeved on the uppermost end of the outer cylinder 31, and a magnet can be arranged on the outer wall of the inner tube 32 to attract the movable disc 52 to the inner tube 32.

[0031] Further, as shown in Figure 5 and Figure 6 , the bottom of the elastic bag 4 is fixedly connected with a base 41, and the two sides of the bottom of the movable disc 52 are both fixedly connected with a connecting rod 6, the bottom end of which is fixedly connected with the base 41, and the two sides of the base 41 are both provided with a sliding block 411, and the two sides of the bottom pipe 34 are both provided with a sliding groove 341, and the sliding block 411 slides in the sliding groove 341.

[0032] It should be noted that the connecting rod 6 passes through the fixed disc 51 and the through port 53 downward and is fixedly connected with the upper surface of the base 41, and the sliding block 411 slides in the sliding groove 341, so that the base 41 can only move vertically and cannot be inclined. In the case of water entering the gas meter, water enters the inner tube 32 from the air inlet 11, and enters the inside of the elastic bag 4 downward from the inner tube 32, and under the action of gravity, the elastic bag 4 deforms downward, so that the base 41 moves downward, and the base 41 drives the movable disc 52 to move downward through the connecting rod 6, so that the movable disc 52 is attached to the through port 53, thereby achieving the purpose of blocking.

[0033] Further, as shown in Figure 5 and Figure 7 , the bottom of the base 41 is fixedly connected with a metal block 8, and the bottom of the inner side of the bottom pipe 34 is fixedly connected with a magnet 81, and the metal block 8 and the magnet 81 are attracted to each other when the elastic bag 4 is filled with water and deformed downward.

[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 disc 52 and the fixed disc 51 are completely attached.

[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 Figures 4-7 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, the bottom of the bottom pipe 34 is provided with a release device 9, the release device 9 comprises a fixed sleeve 91 fixedly connected with the bottom of the bottom pipe 34, a pressing rod 92 is vertically inserted into the fixed sleeve 91, a spring 93 is sleeved outside the pressing rod 92 and used for resetting the pressing rod 92 downward, the magnet 81 is annular structure, and the upper end of the pressing rod 92 extends to the middle position of the magnet 81 through the bottom of the bottom pipe 34.

[0040] It should be noted that when it is needed to reset the elastic bag 4 and the movable disc 52, the gas meter is downward, then the pressing rod 92 is pressed, the spring 93 is compressed, the pressing rod 92 penetrates the middle of the magnet 81 and pushes 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 disc 52 move downward until the movable disc 52 is fixedly adsorbed with the magnet on the side wall of the inner pipe 32.

[0041] Referring to the drawings accompanying the specification Figures 2-3 , Figure 8 and Figure 9 , the flow meter 100 comprises a gas pipe 101, transducer one 102 and transducer two 103 are arranged on both sides of the upper end of the gas pipe 101, the bottom ends of the transducer one 102 and the transducer two 103 are inclinedly arranged towards the middle of the gas pipe 101, one end of the gas pipe 101 is in communication with the air inlet 311, and the other end of the gas pipe 101 is in communication with the control valve 110.

[0042] It should be noted that the flow meter 100 measures the gas flow by using the time difference method, utilizes the characteristics that the propagation speed of sound waves in fluid is different due to different gas flow directions, measures the difference between the downstream propagation time and the upstream propagation time, and thus calculates the speed and flow of the gas flow. For example, the transducer two 103 receives the ultrasonic wave emitted by the transducer one 102, and the transducer one 102 receives the ultrasonic wave emitted by the transducer two 103, the former is the downstream propagation time, and the latter is the upstream propagation time, after the gas flow rate is obtained, the cross-sectional area of the gas pipe 101 can be used to obtain the gas use volume. The use of the ultrasonic wave method to measure the gas use volume has high precision.

[0043] Referring to the drawings accompanying the specification Figure 5 and Figures 8-9 , the inside of the upper shell 1 is provided with the flow meter 100 and the control valve 110, the air inlet 311 is in communication with the gas outlet 12 through the flow meter 100 and the control valve 110 in sequence, the bottom of the bottom pipe 34 is provided with the switch 7, and the elastic bag 4 is deformed downward to trigger the switch 7, so that the control valve 110 closes the gas 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 only for the preferred embodiments of the present application, and not for limiting the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

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). 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), 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 provided 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 passage between the inner tube (32) and the outer tube (33), the movable disk (52) moves downward to fit the upper surface of the fixed disk (51); 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 ends of the connecting rods (6) are fixedly connected to the base (41), both sides of the base (41) are provided with sliders (411), both sides of the bottom tube (34) are provided with sliding grooves (341), and the sliders (411) slide inside the sliding grooves (341); Water enters the inner tube (32) from the air inlet (11), and flows downward from the inner tube (32) into the interior of the elastic bag (4). Under the action of gravity, the elastic bag (4) deforms downward, thereby causing the base (41) to move downward. The base (41) drives the movable disk (52) to move downward through the connecting rod (6), so that the movable disk (52) fits with the through hole (53), thereby achieving the purpose of blocking.

2. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 1 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).

3. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 2, characterized in that: 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).

4. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 3 is characterized by: 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.

5. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 4 is characterized by: 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).

6. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 5, 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).

7. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 6, 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).

8. The high-precision digital technology Internet of Things ultrasonic gas meter according to claim 7, 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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