Gas ultrasonic flowmeter with calibration function

Abstract

The utility model discloses a gas ultrasonic flowmeter with a calibration function, which relates to the technical field of gas ultrasonic flowmeters and comprises a base and a flowmeter body, a calibration cylinder is arranged at the top of the base, a boosting component is arranged on one side of the top of the base close to a piston, the boosting component comprises a disc, an annular rack is rotatably connected onto the disc, and the annular rack is connected with the calibration cylinder. A fixing seat is arranged on the side, close to the piston, of the disc, a first rotating shaft is rotationally connected to the fixing seat, a first gear is arranged on the first rotating shaft, the first gear is in meshed connection with the annular rack, a first connecting rod is connected to the first rotating shaft, a second rotating shaft is rotationally connected to the first connecting rod, and a second connecting rod is connected to the second rotating shaft; the side, away from the second rotating shaft, of the second connecting rod is rotationally connected with a third rotating shaft, a pushing block is arranged on the third rotating shaft, the boosting assembly is arranged, piston movement is conducted on the calibration barrel, the invisible gas volume amount is converted into the movement amount of the piston in the calibration barrel, and the accuracy of data measured by the flowmeter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas ultrasonic flowmeters, in particular to a gas ultrasonic flowmeter with a calibration function. Background Art

[0002] Gas ultrasonic flowmeter is a measuring instrument that uses the fluid flow rate information carried by ultrasonic signals when propagating in the pipeline to achieve the purpose of metering management after receiving, recording, calculating and analyzing. Gas ultrasonic flowmeter is a new type of gas metering instrument, which adopts ultrasonic measurement technology and consists of temperature, pressure sensors and surface mounted flow meters. It has the characteristics of high stability, accuracy and low starting flow.

[0003] An existing Chinese patent (publication number: CN219757420U) proposes an industrial gas ultrasonic flowmeter, including a joint pipe, both sides of the joint pipe are fixedly connected with connecting plates, the opposite sides of the two connecting plates are fixedly connected with fixing frames, the interior of the fixing frame is provided with a sealing assembly and a clamping mechanism, the outer surface of the joint pipe is fixedly connected with an insulation pipe, the top of the insulation pipe is fixedly connected with a flowmeter body, the bottom of the flowmeter body extends to the interior of the joint pipe, the inner wall of the insulation pipe is provided with multiple groups of electric heaters, and the outer surface of the joint pipe located inside the insulation pipe is provided with a constant temperature mechanism.

[0004] The above technical solution clamps and fixes pipes of different inner diameters through a clamping mechanism, and seals the fixing frame through a sealing assembly, so that the device can detect pipes of different inner diameters. However, the above device cannot calibrate the flow meter. A flow meter that cannot be calibrated may drift over time, resulting in inaccurate measurement data. Since calibration is impossible, once a fault occurs or performance deteriorates, maintenance and performance verification become more complicated. Therefore, we propose a gas ultrasonic flow meter with a calibration function. Utility Model Content

[0005] The purpose of the utility model is to provide a gas ultrasonic flow meter with a calibration function to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas ultrasonic flowmeter with a calibration function, comprising a base and a flowmeter body, a calibration cylinder is arranged on the top of the base, a piston is slidably connected in the calibration cylinder, a booster assembly is arranged on the side of the top of the base close to the piston, the booster assembly comprises a disc, an annular rack is rotatably connected to the disc, a fixed seat is arranged on the side of the disc close to the piston, a first rotating shaft is rotatably connected to the fixed seat, a first gear is arranged on the first rotating shaft, the first gear is meshed with the annular rack, a first connecting rod is connected to the first rotating shaft, a second rotating shaft is rotatably connected to the first connecting rod, a second connecting rod is connected to the second rotating shaft, a third rotating shaft is rotatably connected to the side of the second connecting rod away from the second rotating shaft, and a push block is arranged on the third rotating shaft.

[0007] As a preferred embodiment, a clamping assembly is provided on the side of the top of the base close to the calibration cylinder, and the clamping assembly includes a fixed plate, a screw is rotatably connected to the top of the fixed plate, a rocker is fixedly connected to the screw, a slider is threadedly connected to the screw, a splint is provided on the side of the slider away from the screw, and the flowmeter body is clamped in the splint.

[0008] The above technical solution is adopted: by setting the clamping rent, the flow meter body is fixed and can be adjusted according to flow meters of different sizes.

[0009] As a preferred embodiment, a power assembly is arranged on the side of the disc close to the piston, and the power assembly includes a support plate, a motor is arranged on the top of the support plate, an output end of the motor is fixedly connected to a fixed shaft, a second gear is arranged on the fixed shaft, and the second gear is meshed with an annular rack.

[0010] The above technical solution is adopted: by setting a power component, the annular rack is driven to rotate, thereby completing the boosting work.

[0011] As a preferred embodiment, a limiting assembly is provided on the piston, and the limiting assembly includes a fourth rotating shaft, and a torsion spring is provided on the fourth rotating shaft. A limiting plate is rotatably connected to the torsion spring, and the side of the limiting plate away from the piston is clamped on the push block.

[0012] The above technical solution is adopted: by setting a limit assembly, the push block and the piston are connected, which is convenient for the boosting work and can be easily disassembled.

[0013] As a preferred embodiment, support rods are provided on both sides of the top of the base close to the annular rack, and an arc-shaped slide rail is fixedly connected to the support rods. The annular rack is slidably connected to the arc-shaped slide rail, and a connecting piece is provided on the side of the disc away from the piston. A support leg is connected to the bottom of the connecting piece, and the support leg is fixed to the top of the base on the side away from the connecting piece.

[0014] The above technical solution is adopted: by setting an arc-shaped slide rail, the annular rack is limited to prevent shaking and deviation during rotation.

[0015] As a preferred embodiment, the top of the calibration cylinder is fixedly connected to an air inlet pipe, one end of the air inlet pipe away from the calibration cylinder is fixedly connected to the flowmeter body, an air inlet valve is provided on the air inlet pipe, and the side of the flowmeter body away from the air inlet pipe is fixedly connected to an exhaust pipe, and an exhaust valve is provided on the exhaust pipe.

[0016] The above technical solution is adopted: by setting an air inlet pipe, the gas in the calibration cylinder is conveniently transported to the flow meter, and the gas is discharged through the set exhaust pipe, so that the error is reduced.

[0017] Compared with the prior art, the advantages and positive effects of the utility model are:

[0018] 1. In the utility model, by setting a booster component, the calibration cylinder is subjected to piston movement so that the invisible gas volume is converted into the movement of the piston inside the calibration cylinder, thereby improving the accuracy of the flow meter measurement data and solving the problem that the flow meter cannot be calibrated in the above-mentioned device and the flow meter that cannot be calibrated may drift over time, resulting in inaccurate measurement data. By setting a power component, the annular rack is driven to rotate, thereby completing the boosting work. By setting a clamping rent, the flow meter body is fixed and can be adjusted according to flow meters of different sizes. By setting an air inlet pipe, the gas in the calibration cylinder is conveniently transported to the flow meter, and the gas is discharged through the exhaust pipe, thereby reducing the error.

[0019] 2. In the utility model, by setting a limit assembly, the push block and the piston are connected, which is convenient for boosting work and can be easily disassembled. By setting an arc-shaped slide rail, the annular rack is limited to prevent shaking and deviation during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a gas ultrasonic flow meter with calibration function.

[0021] Figure 2 The figure is a structural diagram of a booster component in a gas ultrasonic flow meter with calibration function.

[0022] Figure 3The figure is a structural diagram of a limiter assembly in a gas ultrasonic flow meter with a calibration function.

[0023] Figure 4 It is a side view of a gas ultrasonic flow meter with calibration function.

[0024] Numbers in the figure:

[0025] 1. Base; 2. Flow meter body; 3. Calibration cylinder; 4. Piston;

[0026] 5. booster assembly; 51. disc; 52. annular rack; 53. fixed seat; 54. first rotating shaft; 55. first gear; 56. first connecting rod; 57. second rotating shaft; 58. second connecting rod; 59. third rotating shaft;

[0027] 6. Clamping assembly; 61. Fixing plate; 62. Screw rod; 63. Rocker; 64. Slider; 65. Clamping plate;

[0028] 7. Limiting assembly; 71. Fourth rotating shaft; 72. Torsion spring; 73. Limiting plate;

[0029] 8. Power assembly; 81. Support plate; 82. Motor; 83. Fixed shaft; 84. Second gear;

[0030] 9. Support rod; 10. Arc slide rail; 11. Push block; 12. Intake pipe; 13. Intake valve; 14. Exhaust pipe; 15. Exhaust valve; 16. Connector; 17. Support leg. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] like Figure 1 and Figure 2As shown, a gas ultrasonic flowmeter with a calibration function comprises a base 1 and a flowmeter body 2, a calibration cylinder 3 is arranged on the top of the base 1, a piston 4 is slidably connected in the calibration cylinder 3, a booster assembly 5 is arranged on the side of the top of the base 1 close to the piston 4, the booster assembly 5 comprises a disc 51, an annular rack 52 is rotatably connected to the disc 51, a fixed seat 53 is arranged on the side of the disc 51 close to the piston 4, a first rotating shaft 54 ​​is rotatably connected to the fixed seat 53, a first gear 55 is arranged on the first rotating shaft 54, the first gear 55 is meshed with the annular rack 52, a first connecting rod 56 is connected to the first rotating shaft 54, a second rotating shaft 57 is rotatably connected to the first connecting rod 56, a second rotating shaft 58 is connected to the second rotating shaft 57, a third rotating shaft 59 is rotatably connected to the second connecting rod 58 away from the second rotating shaft 57, a push block 11 is arranged on the third rotating shaft 59, the disc 51 close to the piston 4 A power assembly 8 is arranged on one side, the power assembly 8 includes a support plate 81, a motor 82 is arranged on the top of the support plate 81, an output end of the motor 82 is fixedly connected with a fixed shaft 83, a second gear 84 is arranged on the fixed shaft 83, and the second gear 84 is meshed and connected with the annular rack 52. By setting the power assembly 8, the motor 82 is turned on to drive the fixed shaft 83 to rotate, the fixed shaft 83 drives the second gear 84 to rotate, the second gear 84 drives the annular rack 52 in the booster assembly 5 to rotate, the annular rack 52 rotates and drives the first gear 55 to rotate, the first gear 55 drives the first rotating shaft 54 ​​to rotate, the first rotating shaft 54 ​​drives the first connecting rod 56, the second rotating shaft 57 and the second connecting rod 58 to move, thereby driving the push block 11 and the piston 4 to move the piston 4 in the calibration cylinder 3, so that the invisible gas volume is converted into the movement of the piston 4 inside the calibration cylinder 3, and the accuracy of the flow meter measurement data is improved;

[0033] Furthermore, if Figure 1 As shown: a clamping assembly 6 is provided on one side of the top of the base 1 close to the calibration cylinder 3, and the clamping assembly 6 includes a fixing plate 61, a screw 62 is rotatably connected to the top of the fixing plate 61, a rocker 63 is fixedly connected to the screw 62, a slider 64 is threadedly connected to the screw 62, a clamping plate 65 is provided on the side of the slider 64 away from the screw 62, and the flow meter body 2 is clamped in the clamping plate 65. By setting the clamping assembly 6, the rocker 63 is shaken to drive the screw 62 to rotate, and the screw 62 drives the slider 64 to move, thereby driving the clamping plate 65 to clamp and fix flow meters of different sizes;

[0034] In the above solution, the push block 11 can drive the piston 4 to move into the calibration cylinder 3, but cannot bring the piston 4 out. Figure 3As shown: a limiting assembly 7 is provided on the piston 4, the limiting assembly 7 includes a fourth rotating shaft 71, a torsion spring 72 is provided on the fourth rotating shaft 71, a limiting plate 73 is rotatably connected to the torsion spring 72, and the side of the limiting plate 73 away from the piston 4 is clamped on the push block 11. By providing the limiting assembly 7, the push block 11 and the piston 4 are connected, which is convenient for boosting work and can be easily disassembled;

[0035] The above solution also has the problem that when the annular rack 52 rotates, it is easy to shake and deviate. Figure 2 As shown: support rods 9 are provided on both sides of the top of the base 1 near the annular rack 52, and an arc-shaped slide rail 10 is fixedly connected to the support rod 9. The annular rack 52 is slidably connected to the arc-shaped slide rail 10. A connecting piece 16 is provided on the side of the disc 51 away from the piston 4. A supporting leg 17 is connected to the bottom of the connecting piece 16. The side of the supporting leg 17 away from the connecting piece 16 is fixed to the top of the base 1. By providing the arc-shaped slide rail 10, the annular rack 52 is limited to prevent shaking and deviation during rotation;

[0036] Furthermore, if Figure 1 As shown: the top of the calibration cylinder 3 is fixedly connected with an air inlet pipe 12, one end of the air inlet pipe 12 away from the calibration cylinder 3 is fixedly connected to the flow meter body 2, an air inlet valve 13 is provided on the air inlet pipe 12, and the side of the flow meter body 2 away from the air inlet pipe 12 is fixedly connected with an exhaust pipe 14, and the exhaust pipe 14 is provided with an exhaust valve 15. By providing the air inlet pipe 12, it is convenient to transport the gas in the calibration cylinder 3 to the flow meter, and then the gas is discharged through the exhaust pipe 14, so that the error is reduced.

[0037] Working principle: Figure 1 - Figure 4As shown, by setting the power assembly 8, turning on the motor 82, driving the fixed shaft 83 to rotate, the fixed shaft 83 drives the second gear 84 to rotate, the second gear 84 drives the annular rack 52 in the booster assembly 5 to rotate, the annular rack 52 rotates to drive the first gear 55 to rotate, the first gear 55 drives the first rotating shaft 54 ​​to rotate, the first rotating shaft 54 ​​drives the first connecting rod 56, the second rotating shaft 57 and the second connecting rod 58 to move, thereby driving the push block 11 and the piston 4 to move the piston 4 in the calibration cylinder 3, so that the invisible gas volume is converted into the movement of the piston 4 inside the calibration cylinder 3, thereby improving the flow meter measurement data. In order to ensure the accuracy of the data, a clamping assembly 6 is provided, and the rocker 63 is shaken to drive the screw 62 to rotate, and the screw 62 drives the slider 64 to move, thereby driving the clamping plate 65 to clamp and fix flow meters of different sizes. By providing a limit assembly 7, the push block 11 and the piston 4 are connected to facilitate the boosting work and can be easily disassembled. By providing an arc-shaped slide rail 10, the annular rack 52 is limited to prevent shaking and deviation during rotation. By providing an air inlet pipe 12, the gas in the calibration cylinder 3 is conveniently transported to the flow meter, and the gas is discharged through the exhaust pipe 14 to reduce the error.

[0038] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A gas ultrasonic flow meter with calibration function, comprising a base (1) and a flow meter body (2), characterized in that: A calibration cylinder (3) is arranged on the top of the base (1), a piston (4) is slidably connected inside the calibration cylinder (3), a booster assembly (5) is arranged on the side of the top of the base (1) close to the piston (4), the booster assembly (5) comprises a disc (51), an annular rack (52) is rotatably connected to the disc (51), a fixed seat (53) is arranged on the side of the disc (51) close to the piston (4), a first rotating shaft (54) is rotatably connected to the fixed seat (53), and the first rotating shaft (54) is rotatably connected to the first rotating shaft (54). 4) is provided with a first gear (55), the first gear (55) is meshed with the annular rack (52), the first rotating shaft (54) is connected with a first connecting rod (56), the first connecting rod (56) is rotatably connected with a second rotating shaft (57), the second rotating shaft (57) is connected with a second connecting rod (58), the second connecting rod (58) is rotatably connected with a third rotating shaft (59) at a side away from the second rotating shaft (57), and the third rotating shaft (59) is provided with a push block (11).

2. A gas ultrasonic flowmeter with calibration function according to claim 1, characterized in that: A clamping assembly (6) is provided on the top of the base (1) near the calibration cylinder (3), and the clamping assembly (6) includes a fixed plate (61), the top of the fixed plate (61) is rotatably connected to a screw rod (62), a rocker (63) is fixedly connected to the screw rod (62), a slider (64) is threadedly connected to the screw rod (62), a clamping plate (65) is provided on the side of the slider (64) away from the screw rod (62), and the flow meter body (2) is clamped in the clamping plate (65).

3. The gas ultrasonic flowmeter with calibration function according to claim 1, characterized in that: A power assembly (8) is arranged on one side of the disc (51) close to the piston (4), and the power assembly (8) comprises a support plate (81). A motor (82) is arranged on the top of the support plate (81). The output end of the motor (82) is fixedly connected to a fixed shaft (83). A second gear (84) is arranged on the fixed shaft (83), and the second gear (84) is meshedly connected to the annular rack (52).

4. The gas ultrasonic flowmeter with calibration function according to claim 1, characterized in that: A limit assembly (7) is arranged on the piston (4), and the limit assembly (7) comprises a fourth rotating shaft (71). A torsion spring (72) is arranged on the fourth rotating shaft (71), and a limit plate (73) is rotatably connected to the torsion spring (72). The side of the limit plate (73) away from the piston (4) is clamped on the push block (11).

5. The gas ultrasonic flowmeter with calibration function according to claim 1, characterized in that: Support rods (9) are provided on both sides of the top of the base (1) close to the annular rack (52), and an arc-shaped slide rail (10) is fixedly connected to the support rod (9). The annular rack (52) is slidably connected to the arc-shaped slide rail (10). A connecting piece (16) is provided on the side of the disc (51) away from the piston (4), and a supporting leg (17) is connected to the bottom of the connecting piece (16). The side of the supporting leg (17) away from the connecting piece (16) is fixed to the top of the base (1).

6. The gas ultrasonic flowmeter with calibration function according to claim 1, characterized in that: The top of the calibration cylinder (3) is fixedly connected to an air inlet pipe (12); one end of the air inlet pipe (12) away from the calibration cylinder (3) is fixedly connected to the flow meter body (2); an air inlet valve (13) is provided on the air inlet pipe (12); a side of the flow meter body (2) away from the air inlet pipe (12) is fixedly connected to an exhaust pipe (14); and an exhaust valve (15) is provided on the exhaust pipe (14).

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