Novel fluid kinetic energy self-powered intelligent gas meter

Abstract

The invention discloses a novel fluid kinetic energy self-powered intelligent gas meter, and relates to the technical field of gas meters. Comprising an internet-of-things intelligent membrane type gas meter, cylindrical gas guide cylinders installed on gas inlet and outlet ports in the left side and the right side of the top end of the internet-of-things intelligent membrane type gas meter, upper gas guide covers installed at openings in the upper ends of the cylindrical gas guide cylinders in a bolted mode, and T-shaped hollow shaft shells integrally formed on one sides of the back faces of the cylindrical gas guide cylinders. A T-shaped flange plate is fixed to the end, away from the cylindrical air guide cylinder, of the T-shaped hollow shaft shell, and a micro generator is installed on the outer wall of one side of the T-shaped flange plate. Fluid kinetic energy of fuel gas is converted into rotation power which is transmitted to the off-axis gear speed-up transmission structure and the bevel gear reversing transmission structure, so that the micro generator works, electric power generated by the micro generator enters the power module and is supplied to the intelligent membrane type fuel gas meter of the internet of things, and the purpose of self-energy supply is achieved; the defect of traditional battery power supply is overcome.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas meters, in particular to a novel fluid kinetic energy self-powered intelligent gas meter. BACKGROUND

[0002] The Internet of Things intelligent diaphragm gas meter is an intelligent metering device integrating electronic sensing, microprocessors and wireless communication technology on the basis of a traditional mechanical diaphragm gas meter. Its core structure includes a mechanical metering base meter and an intelligent electronic module: the base meter uses gas pressure to drive the diaphragm to reciprocate, and through a slide valve switching and a connecting rod mechanism to drive a mechanical counter to display the cumulative gas volume; the intelligent module captures the pulse signals generated by the mechanical movement through a magnetic sensor, converts them into accurate gas consumption data by a microprocessor and stores them, and is equipped with a wireless communication module and an electrically controlled valve; this type of diaphragm gas meter completely replaces manual meter reading, uploads gas consumption, device status and safety alarm information to the management platform at regular intervals or event triggers through a wireless network, and receives remote instructions;

[0003] As disclosed in the authorized announcement No. CN114252121B, an intelligent gas meter includes an upper panel, a rotating groove and a lower panel arranged in sequence from top to bottom on the meter body; n-shaped pressure handles are slidably connected to the two sides of the upper panel, the two ends of the pressure handle are connected to downwardly extending piston rods, the end portions of the piston rods are movably connected to drive rods abutting against the end portions on the sliding grooves in the lower panel, the sliding plates between the two drive rods are located in the rotating groove, the sliding plates are slidably connected to the lower panel through the sliding rails provided on the lower panel, the directions of the sliding grooves and the sliding rails are along the inner and outer directions of the rotating groove, a rotating frame is provided on the sliding plate, the drive rods are driven to slide outwards along the sliding grooves by pressing the pressure handles, this step of pressing action makes the display screen slide out of the rotating groove, when the end portions of the piston rods are pressed into position, the pressure shafts sliding out of the sliding plate are displaced to below the pressure arms, the pressure arms are continuously pressed to drive the pressure shafts to press downwards, so that the display screen is flipped upwards around the pressure shafts and can trigger the switch in the process of pressing the pressure shafts, so that the sliding display screen is flipped upwards and lit up, however, the intelligent gas meter integrates various electronic components such as sensors, microprocessors and communication modules, these components need continuous and stable power supply to work normally, the traditional mechanical gas meter does not need external power supply, and relies on the mechanical energy of gas flow to complete metering, while the intelligent function of the intelligent gas meter must rely on the electrically driven electronic equipment to collect, process and transmit data, over time, the battery power will gradually decrease, and the final depletion of the battery means the complete loss of intelligent function, i.e. unable to meter, unable to communicate and valve out of control, the meter is essentially degraded to an ordinary mechanical meter or even completely disabled, losing its advantages of remote monitoring and gas management. SUMMARY

[0004] The present application aims to provide a new fluid kinetic energy self-powered intelligent gas meter, which is characterized by that a cylindrical gas guide cylinder and an upper gas guide cover are installed at the gas inlet end and the gas outlet end of the Internet of Things intelligent diaphragm gas meter.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a new fluid kinetic energy self-powered intelligent gas meter, which comprises an Internet of Things intelligent diaphragm gas meter, a cylindrical gas guide cylinder installed on the left and right side gas inlet and outlet ports at the top end of the Internet of Things intelligent diaphragm gas meter, an upper gas guide cover bolted and installed at the opening position of the upper end of the cylindrical gas guide cylinder, and a T-shaped hollow shaft shell integrally formed on one side of the back of the cylindrical gas guide cylinder; a T-shaped flange is fixed to the end of the T-shaped hollow shaft shell away from the cylindrical gas guide cylinder, a micro generator is installed on the outer wall of one side of the T-shaped flange, the input shaft of the micro generator extends into the T-shaped hollow shaft shell and is provided with a bevel gear reversing transmission structure, a U-shaped double-layer shaft support is fixed to one end inside the cylindrical gas guide cylinder, a pair of turbine shafts are installed at the center position inside the U-shaped double-layer shaft support, an off-axis gear speed increasing transmission structure is installed at the right side position inside the cylindrical gas guide cylinder for power connection of the bevel gear reversing transmission structure and the pair of turbine shafts, a protective cover is fixed between the two T-shaped flanges, a power module electrically connected with the output end of the micro generator is installed on the back of the protective cover, and the output end of the power module is electrically connected with the input end of the Internet of Things intelligent diaphragm gas meter.

[0006] Preferably, a anti-drop ring is fixed to the lower end of the cylindrical gas guide cylinder, and an internal thread sleeve is rotatably installed inside the anti-drop ring.

[0007] Preferably, a diaphragm is installed at the joint between the upper end surface of the cylindrical gas guide cylinder and the lower end surface of the upper gas guide cover.

[0008] Preferably, a middle cavity and a lower chamber are respectively arranged at the upper and lower positions inside the cylindrical gas guide cylinder, the U-shaped double-layer shaft support is installed in the middle cavity, and an upper chamber is arranged inside the upper gas guide cover.

[0009] Preferably, the pair of turbine shafts comprises a middle shaft rotatably installed at the center position inside the U-shaped double-layer shaft support, and an upper turbine blade and a lower turbine blade fixedly installed at the upper end and the lower end of the middle shaft, respectively; the upper turbine blade is located in the upper chamber, and the lower turbine blade is located in the lower chamber.

[0010] Preferably, the off-axis gear speed increasing transmission structure comprises a speed increasing gear shaft installed on the outer wall of one side of the U-shaped double-layer shaft support through a bearing seat and a plurality of connecting arms fixed on the outer wall of the middle shaft in a radial and equidistant manner, and a gear ring is fixed on one end of the surface of the middle shaft through the connecting arms, and the gear ring and the speed increasing gear shaft are in meshing engagement.

[0011] Preferably, the top end of the U-shaped double-layer shaft support is fixed with a hollow tapered table, and a pulley is rotatably installed on one side of the bottom end of the lower turbine blade, and the pulley and the hollow tapered table are in contact with each other.

[0012] Preferably, the bevel gear reversing transmission structure comprises a support disc fixed on one side of the inner part of the T-shaped hollow shaft shell, a driven bevel gear shaft rotatably installed in the inner part of the support disc, and a driving bevel gear fixed on the lower end of the speed increasing gear shaft, the driving bevel gear and the driven bevel gear shaft are in meshing engagement, and one end of the driven bevel gear shaft away from the driving bevel gear penetrates to the outside of the support disc and is fixedly connected with the input shaft of the micro generator.

[0013] Preferably, a laminated shaft rotation support is installed in the inner part of the cylindrical air guide cylinder above the gear ring.

[0014] Preferably, the laminated shaft rotation support comprises a lower circular table fixed at the stepped position of the top end of the cylindrical air guide cylinder, a cross fixedly installed on the top end of the lower circular table, and an upper circular table fixedly installed on the upper end of the cross, and the top end of the middle shaft penetrates to the outside of the lower circular table, the cross and the upper circular table in sequence.

[0015] Compared with the prior art, the new fluid kinetic energy self-powered intelligent gas meter has the beneficial effects that: through the cooperation of the cylindrical air guide cylinder, the upper air guide shell cover, the laminated shaft rotation support, the pair of turbine shafts, the off-axis gear speed increasing transmission structure and the bevel gear reversing transmission structure and other structures, when the gas enters and is discharged in the meter, the pair of turbine shafts in the cylindrical air guide cylinder and the upper air guide shell cover receive the fluid kinetic energy, and transmit the rotary power to the off-axis gear speed increasing transmission structure and the bevel gear reversing transmission structure, so that the micro generator works, the electric power generated by the micro generator enters the power module and is used by the Internet of Things intelligent diaphragm gas meter, the purpose of self-power supply is achieved, the shortcomings of traditional battery power supply are solved, the maintenance cost is reduced, and the reliability and safety of the gas meter in long-time work are improved.

[0016] Wherein the fluid kinetic energy is used to drive the micro generator, the flowing energy of the gas is converted into electric energy, the continuous and stable power supply is provided for the gas meter, the maintenance frequency and cost are greatly reduced, and since the gas flow is the inevitable condition for the normal work of the gas meter, it means that as long as the gas meter is in use, the electric energy can be continuously generated, the long time stable operation of the meter body is ensured, secondly, the mechanical energy of the gas flow is used to drive the generator, the problem of insufficient power caused by battery aging is avoided, the stability and safety performance of the equipment are significantly improved, the micro generator and the mechanical transmission structure are relatively simple and durable in the process, the working environment of the gas meter can be adapted, and the shutdown risk caused by power supply problem is reduced;

[0017] Finally, the off-axis gear speed increasing transmission and bevel gear reversing transmission structure are used to cooperate with the turbine shaft, mechanical energy is efficiently converted into electric energy, the kinetic energy in the gas flow can be fully utilized, the micro generator can stably generate electricity under different flow conditions, the continuous power support is provided for the gas meter, and even in the case of temporary interruption of external power and the like, the instrument can still maintain the core metering, valve driving and safety monitoring functions and continuously operate. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The three-dimensional structure of the present application is shown Figure 1 ;

[0019] Figure 2 The three-dimensional structure of the present application is shown Figure 2 ;

[0020] Figure 3 The side view of the present application is shown

[0021] Figure 4 The three-dimensional structure of the present application is shown Figure 1 ;

[0022] Figure 2 The three-dimensional structure of the present application is shown Figure 6 ;

[0023] Figure 7 The three-dimensional structure of the present application is shown

[0024] Figure 8 The three-dimensional structure of the present application is shown

[0025] Figure 7 The three-dimensional structure of the present application is shown Figure 9 The three-dimensional structure of the present application is shown

[0026] Figures 1 to 5This is a three-dimensional structural diagram of the stacked shaft rotation support of Embodiment 3 of the present invention.

[0027] In the diagram: 1. IoT smart diaphragm gas meter; 2. Cylindrical gas guide tube; 201. Lower chamber; 202. Middle chamber; 203. Anti-detachment ring; 204. Internal threaded sleeve; 3. Upper gas guide cover; 301. Diaphragm; 302. Upper chamber; 4. T-shaped hollow shaft housing; 5. T-shaped flange; 6. Protective cover; 7. Micro generator; 8. Power module; 9. U-shaped double-layer shaft frame; 901. Hollow conical stage; 10. Opposite turbine shaft; 1001. Middle shaft; 1 002. Upper turbine blade; 1003. Lower turbine blade; 11. Off-axis gear speed-increasing transmission structure; 1101. Speed-increasing gear shaft; 1102. Gear ring; 1103. Connecting arm; 1104. Pulley; 12. Bevel gear reversing transmission structure; 1201. Support plate; 1202. Driven bevel gear shaft; 1203. Driving bevel gear; 13. Stacked shaft rotation support; 1301. Upper truncated cone; 1302. Lower truncated cone; 1303. Cross. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] Example 1, by Figure 6 The present invention comprises an IoT smart diaphragm gas meter 1, a cylindrical air guide 2 installed on the left and right inlet and outlet ports at the top of the IoT smart diaphragm gas meter 1, an upper air guide cover 3 bolted to the upper opening of the cylindrical air guide 2, and a T-shaped hollow shaft housing 4 integrally formed on one side of the back of the cylindrical air guide 2. A T-shaped flange 5 is fixed to one end of the T-shaped hollow shaft housing 4 away from the cylindrical air guide 2, and a micro generator 7 is installed on one outer wall of the T-shaped flange 5. The input shaft of the micro generator 7 extends into the interior of the T-shaped hollow shaft housing 4 and is equipped with a bevel gear reversing transmission structure 12. A U-shaped double-layer shaft frame 9 is fixed at one end inside the cylindrical air guide tube 2, and a pair of turbine shafts 10 is installed at the center of the U-shaped double-layer shaft frame 9. An off-axis gear speed-increasing transmission structure 11 is installed on the right side of the cylindrical air guide tube 2 to enable the bevel gear reversing transmission structure 12 and the pair of turbine shafts 10 to connect power. A protective cover 6 is fixed between the two T-shaped flanges 5, and a power module 8 that is electrically connected to the output end of the micro generator 7 is installed on the back of the protective cover 6. The output end of the power module 8 is electrically connected to the input end of the IoT smart diaphragm gas meter 1.

[0030] The power module 8 is composed of a rectifier unit, an energy storage unit, a voltage regulation unit and a protection circuit. Since the micro generator 7 usually outputs an alternating current signal, and the internal electronic equipment of the Internet of Things smart diaphragm gas meter 1 needs a stable direct current power supply, the rectifier circuit adopts a bridge rectifier or synchronous rectification technology to ensure high power conversion efficiency and low loss. The direct current after rectification is filtered to remove voltage fluctuations and provide stable input for subsequent voltage regulation.

[0031] The energy storage unit is usually composed of a lithium battery, which is used to store the rectified power and buffer the unstable output of the micro generator 7 and the power changes caused by gas flow fluctuations. The voltage regulation unit is responsible for adjusting the voltage output by the energy storage unit to the stable voltage range required by the electronic equipment of the gas meter. This unit can use a low-dropout linear regulator to ensure constant output voltage and avoid abnormal operation of sensors, microprocessors or communication modules inside the meter body due to voltage fluctuations. The protection circuit prevents circuit damage caused by external environmental changes or internal faults, improving the reliability and service life of the gas meter.

[0032] In terms of connection, the output end of the micro generator 7 is connected to the input end of the rectifier unit of the power module 8 through a wire, ensuring smooth input of alternating current power into the energy storage unit. The output end of the energy storage unit is connected to various electronic components of the Internet of Things smart diaphragm gas meter 1, such as sensors, microprocessors and communication modules, through a stable direct current power line, ensuring that the meter body receives continuous and stable power support.

[0033] The lower end of the cylindrical air guide cylinder 2 is fixed with a anti-dropping ring 203, and the inside of the anti-dropping ring 203 is rotatably installed with an internal threaded sleeve 204. The lower end of the cylindrical air guide cylinder 2 is fixed with the anti-dropping ring 203, so that the anti-dropping ring 203 rotatably installs an internal threaded sleeve 204. At this time, the internal threaded sleeve 204 can be screwed with the inlet and outlet ports of the Internet of Things smart diaphragm gas meter 1, so that the cylindrical air guide cylinder 2, the upper air guide cover 3 and the Internet of Things smart diaphragm gas meter 1 can be quickly assembled.

[0034] The upper end surface of the cylindrical air guide cylinder 2 and the lower end surface of the upper air guide cover 3 are combined with a diaphragm 301. Since the end surfaces of the cylindrical air guide cylinder 2 and the upper air guide cover 3 are combined with the diaphragm 301, the connection and sealing performance of the end surfaces of the cylindrical air guide cylinder 2 and the upper air guide cover 3 can be improved by the diaphragm 301.

[0035] The upper and lower positions inside the cylindrical air guide cylinder 2 are respectively provided with a middle cavity 202 and a lower cavity 201. The U-shaped double-layer shaft support 9 is installed in the middle cavity 202. The inside of the upper air guide cover 3 is provided with an upper cavity 302.

[0036] In example two, based on example one, Figure 7 , Figure 8 and Figure 9The turbine shaft 10 comprises a middle shaft 1001 rotatably installed at the inner center position of the U-shaped double-layer shaft support 9, and an upper turbine blade 1002 and a lower turbine blade 1003 fixedly installed at the upper end and the lower end of the middle shaft 1001 respectively. The upper turbine blade 1002 is located in the upper chamber 302, and the lower turbine blade 1003 is located in the lower chamber 201. The middle shaft 1001 is coaxially rotatably installed with the cylindrical air guide cylinder 2 and the upper air guide cover 3 through the laminated shaft rotating support 13. At this time, the upper turbine blade 1002 is located in the upper chamber 302 of the upper air guide cover 3, and the middle shaft 1001 is located in the lower chamber 201 of the cylindrical air guide cylinder 2. The upper turbine blade 1002 and the lower turbine blade 1003 at both ends of the middle shaft 1001 can accept the fluid kinetic energy generated in the inlet and outlet process of the Internet of Things smart membrane gas meter 1, enhance the stability and efficiency of power acquisition, and provide stable power for subsequent gear transmission and power generation.

[0037] The off-axis gear speed increasing transmission structure 11 comprises a speed increasing gear shaft 1101 installed on the outer wall of one side of the U-shaped double-layer shaft support 9 through a bearing seat, and a plurality of connecting arms 1103 fixed on the outer wall of the middle shaft 1001 in a radial and equidistant manner. A gear ring 1102 is fixed to one end of the surface of the middle shaft 1001 through a plurality of connecting arms 1103. The gear ring 1102 and the speed increasing gear shaft 1101 are in meshing relationship with each other. The top end of the U-shaped double-layer shaft support 9 is fixedly connected with a hollow conical table 901. The lower end of the lower turbine blade 1003 is rotatably installed with a pulley 1104. The pulley 1104 and the hollow conical table 901 are in contact with each other.

[0038] After the middle shaft 1001 obtains fluid power and is driven to rotate, the middle shaft 1001 drives the gear ring 1102 to rotate through the connecting arms 1103. In turn, the gear ring 1102 drives the speed increasing gear shaft 1101 on the right side wall of the U-shaped double-layer shaft support 9 to rotate, so as to effectively increase the low speed of the middle shaft 1001 to the high speed range required by the micro generator 7. Through the precise meshing of the gears, the speed increasing transmission structure ensures the stable increase of the rotating speed, and provides protection for the efficient operation of the subsequent generator.

[0039] The bevel gear reversing transmission structure 12 includes a support disc 1201 fixed on one side inside the T-shaped hollow shaft housing 4, a driven bevel gear shaft 1202 rotatably installed inside the support disc 1201, and a driving bevel gear 1203 fixed on the lower end of the speed-increasing gear shaft 1101. The driving bevel gear 1203 and the driven bevel gear shaft 1202 are in mesh with each other. The end of the driven bevel gear shaft 1202 away from the driving bevel gear 1203 penetrates to the outside of the support disc 1201 and is fixedly connected with the input shaft of the micro generator 7. The lower end of the speed-increasing gear shaft 1101 enters the lower chamber 201, and then the lower end of the speed-increasing gear shaft 1101 drives the driven bevel gear shaft 1202 to rotate through the driving bevel gear 1203, so that the input shaft of the micro generator 7 can rotate. The bevel gear reversing transmission structure 12 solves the problem of rotation direction caused by the change of gas flow direction, ensures that the micro generator 7 always rotates in a unified direction, and avoids the problems of unstable power generation or damage caused by rotation direction change.

[0040] In example three, on the basis of example two, by ​ It is given that the cylindrical air guide cylinder 2 inside the upper tooth ring 1102 is installed with a laminated shaft rotation support 13. The laminated shaft rotation support 13 includes a lower circular platform 1302 fixed at the stepped position at the top end of the cylindrical air guide cylinder 2, a cross 1303 bolted and installed at the top end of the lower circular platform 1302, and an upper circular platform 1301 bolted and installed at the upper end of the cross 1303. The top end of the middle shaft 1001 penetrates to the outside of the lower circular platform 1302, the cross 1303, and the upper circular platform 1301 in sequence;

[0041] The upper circular platform 1301 is arranged inside the upper chamber 302 below the upper turbine blade 1002 and is bolted with the cross 1303, while the lower circular platform 1302 is fixed at the stepped position of the opening at the top end of the cylindrical air guide cylinder 2. The cross 1303 is fixed between the upper circular platform 1301 and the lower circular platform 1302. At this time, the middle shaft 1001 is coaxial with the cross 1303. Through the laminated shaft rotation support 13, the opposed turbine shaft 10 can be kept accurately positioned in long-time high-speed rotation. The bearings inside the cross 1303 at the upper and lower positions are used to disperse mechanical stress, reduce wear and vibration, and prolong the working life of the opposed turbine shaft 10.

[0042] In use, the embodiment of the application first, when the gas enters the gas inlet end and the gas outlet end of the Internet of Things smart diaphragm gas meter 1, must pass through the cylindrical gas guide cylinder 2 and the upper gas guide cover 3, both of which not only play a role in guiding the flow of gas, but also bear the role of the pair of turbine shaft 10, the off-axis gear speed increasing transmission structure 11 and the bevel gear reversing transmission structure 12. In this process, the cylindrical gas guide cylinder 2 is designed reasonably, which can effectively guide the flow of gas, so that the kinetic energy of the gas is concentrated and transmitted to the turbine shaft. The upper gas guide cover 3 and the laminated shaft rotating support 13 provide protection and support for the pair of turbine shaft 10, ensuring that it remains stable when rotating at high speed. Taking the cylindrical gas guide cylinder 2 and the upper gas guide cover 3 on the right side of the Internet of Things smart diaphragm gas meter 1 as an example, the gas passes through the upper gas guide cover 3 and the cylindrical gas guide cylinder 2 into the meter body, the gas flow impacts the blades of the pair of turbine shaft 10, and forces the pair of turbine shaft 10 to rotate. The laminated shaft rotating support 13 not only ensures low friction rotation, but also bears axial and radial loads, ensuring the stable operation of the pair of turbine shaft 10 under the pulsation of the gas flow. The rotary power of the pair of turbine shaft 10 is transmitted to the off-axis gear speed increasing transmission structure 11, which gradually amplifies the low-speed rotation of the pair of turbine shaft 10 to high-speed rotation. The power after speed increasing is input to the bevel gear reversing transmission structure 12, which changes the direction of power transmission and connects the input shaft of the micro generator 7. After receiving high-speed mechanical energy, the rotor of the micro generator 7 cuts the stator magnetic field to generate three-phase alternating current. This current is input to the power supply module 8, which is converted into direct current and supplied to the Internet of Things smart diaphragm gas meter 1 for use, to meet the needs of the internal electronic equipment of the gas meter.

[0043] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0044] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous modifications and changes can be made to the embodiments without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A novel fluid kinetic energy self-powered smart gas meter, characterized in that: The device includes an IoT smart diaphragm gas meter (1), a cylindrical air guide cylinder (2) installed on the left and right inlet and outlet ports at the top of the IoT smart diaphragm gas meter (1), an upper air guide cover (3) bolted to the opening at the top of the cylindrical air guide cylinder (2), and a T-shaped hollow shaft housing (4) integrally formed on one side of the back of the cylindrical air guide cylinder (2). A T-shaped flange (5) is fixed to the end of the T-shaped hollow shaft housing (4) away from the cylindrical air guide cylinder (2), and a micro generator (7) is installed on the outer wall of one side of the T-shaped flange (5). The input shaft of the micro generator (7) extends into the interior of the T-shaped hollow shaft housing (4) and is equipped with a bevel gear reversing transmission structure (12). The cylindrical air guide cylinder... A U-shaped double-layer shaft frame (9) is fixed at one end inside the cylinder (2), and a pair of turbine shafts (10) is installed at the center of the U-shaped double-layer shaft frame (9). An off-axis gear speed-increasing transmission structure (11) for power connection between the bevel gear reversing transmission structure (12) and the pair of turbine shafts (10) is installed at the right side of the cylindrical air guide cylinder (2). A protective cover (6) is fixed between the two T-shaped flanges (5), and a power module (8) electrically connected to the output end of the micro generator (7) is installed on the back of the protective cover (6). The output end of the power module (8) is electrically connected to the input end of the IoT smart diaphragm gas meter (1).

2. The novel fluid kinetic energy self-powered smart gas meter according to claim 1, characterized in that: The lower end of the cylindrical air guide tube (2) is fixed with an anti-detachment ring (203), and an internal threaded sleeve (204) is rotatably installed inside the anti-detachment ring (203).

3. A novel fluid kinetic energy self-powered smart gas meter according to claim 2, characterized in that: A diaphragm (301) is installed at the junction of the upper end face of the cylindrical air guide tube (2) and the lower end face of the upper air guide cover (3).

4. A novel fluid kinetic energy self-powered smart gas meter according to claim 3, characterized in that: The cylindrical air guide tube (2) has a middle cavity (202) and a lower cavity (201) at the upper and lower positions respectively. The U-shaped double-layer shaft frame (9) is installed in the middle cavity (202). The upper air guide cover (3) has an upper cavity (302) inside.

5. A novel fluid kinetic energy self-powered smart gas meter according to claim 4, characterized in that: The paired turbine shaft (10) includes a central shaft (1001) rotatably mounted at the center of the U-shaped double-layer shaft frame (9), and an upper turbine blade (1002) and a lower turbine blade (1003) fixedly mounted at the upper and lower ends of the central shaft (1001), respectively. The upper turbine blade (1002) is located in the upper chamber (302), and the lower turbine blade (1003) is located in the lower chamber (201).

6. A novel fluid kinetic energy self-powered smart gas meter according to claim 5, characterized in that: The off-axis gear speed-increasing transmission structure (11) includes a speed-increasing gear shaft (1101) mounted on the outer wall of one side of a U-shaped double-layer shaft frame (9) via a bearing seat, and multiple connecting arms (1103) fixed radially and at equal intervals on the outer wall of the central shaft (1001). One end of the surface of the central shaft (1001) is fixed with a gear ring (1102) via several connecting arms (1103), and the gear ring (1102) and the speed-increasing gear shaft (1101) mesh with each other.

7. A novel fluid kinetic energy self-powered smart gas meter according to claim 6, characterized in that: The top of the U-shaped double-layer shaft frame (9) is fixed with a hollow conical platform (901), and a pulley (1104) is rotatably installed on one side of the bottom end of the lower turbine blade (1003). The pulley (1104) and the hollow conical platform (901) are in contact with each other.

8. A novel fluid kinetic energy self-powered smart gas meter according to claim 6, characterized in that: The bevel gear reversing transmission structure (12) includes a support disk (1201) fixed inside one side of the T-shaped hollow shaft housing (4), a driven bevel gear shaft (1202) rotatably mounted inside the support disk (1201), and a driving bevel gear (1203) fixed at the lower end of the speed-increasing gear shaft (1101). The driving bevel gear (1203) and the driven bevel gear shaft (1202) mesh with each other. The end of the driven bevel gear shaft (1202) away from the driving bevel gear (1203) extends through to the outside of the support disk (1201) and is fixedly connected to the input shaft of the micro generator (7).

9. A novel fluid kinetic energy self-powered smart gas meter according to claim 6, characterized in that: A stacked shaft support (13) is installed inside the cylindrical air guide tube (2) above the toothed ring (1102).

10. A novel fluid kinetic energy self-powered smart gas meter according to claim 9, characterized in that: The stacked shaft support (13) includes a lower truncated cone (1302) fixed at the top stepped position of the cylindrical air guide (2), a cross (1303) bolted to the top of the lower truncated cone (1302), and an upper truncated cone (1301) bolted to the upper end of the cross (1303). The top of the central shaft (1001) extends sequentially to the outside of the lower truncated cone (1302), the cross (1303), and the upper truncated cone (1301).

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