A spin vortex flow meter

Abstract

The utility model relates to flowmeter device technical field discloses a kind of swirl flowmeters, including measuring tube, the both ends of measuring tube are fixedly connected with flange, the outside of measuring tube is provided with steady flow component, the inside fixedly connected with racemizer in the one end of measuring tube far from steady flow component, the inside of measuring tube is provided with fairing, the inside of fairing is provided with bevel gear one, the outside of bevel gear one is all engaged with bevel gear two in four corners, the outside fixedly connected with connecting shaft of bevel gear two. In the utility model, by the cooperation of knob, connecting shaft, bevel gear two and bevel gear one, when measuring low flow gas, the flow condition of gas in pipeline can be adjusted by adjusting the force area of fan blade, to ensure the measurement accuracy of flowmeter, and the quick method of knob adjustment makes the device can be quickly adjusted when measuring different gas, improves the measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of flow meter technology, and in particular to a vortex flow meter. Background Technology

[0002] Vortex flow meters are mainly used to measure the volumetric flow rate or mass flow rate of fluids such as gas and liquid in closed pipes. They utilize the vortex generated when the fluid flows through the vortex generator, detect the vortex frequency through a flow sensor, and calculate the flow rate by combining the fluid characteristics. They have the characteristics of high accuracy, wide range, and strong anti-interference ability, and are widely used in petroleum, chemical, gas and other fields.

[0003] The main components of a vortex flow meter include a vortex generator, a flow sensor, and a signal processing unit. When in use, after the fluid enters the flow meter, it generates a vortex through the vortex generator. The vortex rotates forward along the axis, and the frequency is proportional to the flow rate. The flow sensor detects this frequency, and the signal processing unit combines the fluid parameters to calculate the volumetric or mass flow rate.

[0004] However, traditional vortex flow meters suffer from accuracy drift, excessive error at low flow rates, decreased accuracy after long-term use, large accuracy fluctuations under different gases, weak anti-interference ability, and mismeasurement due to pipeline vibration and medium pulsation.

[0005] Therefore, a vortex flow meter is provided to solve the problems mentioned in the background art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a vortex flow meter, which aims to improve the problems of metering accuracy drift, excessive error at low flow rates, decreased accuracy after long-term use, large accuracy fluctuation under different gases, and weak anti-interference ability in the existing technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a vortex flow meter, comprising a measuring tube, flanges fixedly connected to both ends of the measuring tube, a flow stabilizing component disposed outside the measuring tube, an anti-vortex device fixedly connected inside the end of the measuring tube away from the flow stabilizing component, a flow guide shroud disposed inside the measuring tube, a bevel gear I disposed inside the flow guide shroud, bevel gear II meshing with the four corners of the bevel gear I, a coupling fixedly connected to the outside of the bevel gear II, a fan blade fixedly connected to the end of the coupling away from the bevel gear II, an adjusting rod fixedly connected to the outside of the fan blade, a knob fixedly connected to the end of the adjusting rod away from the fan blade, a shock-absorbing component disposed outside the measuring tube, a flow meter fixedly connected to the top of the shock-absorbing component, and a flow sensor fixedly connected to the bottom of the flow meter.

[0008] Furthermore, the flow stabilizing assembly includes a flow stabilizing tube, which is installed outside the measuring tube via a flange. A flow rectifier plate is fixedly connected inside the flow stabilizing tube, and an expansion cavity is formed inside the flow stabilizing tube.

[0009] Furthermore, the shock absorption assembly includes a base, a sleeve is fixedly connected to the top of the base, a shock absorption spring is provided inside the sleeve, a support rod is fixedly connected to the top of the shock absorption spring, a shock-absorbing pad is fixedly connected to the end of the support rod away from the shock absorption spring, and a flow meter is fixedly connected to the top of the shock-absorbing pad.

[0010] Furthermore, the support rod is slidably connected inside the sleeve.

[0011] Furthermore, the end of the flow sensor furthest from the flow meter extends through the interior of the shock-absorbing pad, the base, and the measuring tube.

[0012] Furthermore, the first bevel gear and the second bevel gear are rotatably connected inside the flow guide.

[0013] Furthermore, the adjusting rod is rotatably connected inside the measuring tube, and the knob is rotatably connected to the top of the measuring tube.

[0014] Furthermore, the inner diameter of the expansion cavity is smaller than the inner diameter of the flow stabilizing tube, and the end of the expansion cavity near the measuring tube has a smoothly transitioning tapered constriction structure.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, by cooperating with the knob, the connecting shaft, the second bevel gear and the first bevel gear, the flow of gas in the pipeline can be adjusted by adjusting the force-bearing area of ​​the fan blade when measuring low flow gas, thus ensuring the measurement accuracy of the flow meter. Moreover, the quick adjustment method of the knob allows the device to be quickly adjusted when measuring different gases, thereby improving the measurement accuracy.

[0017] 2. In this utility model, the design of the flow stabilizing component eliminates the pulsation of the medium before the airflow enters the device, allowing the gas to enter the device more stably. The design of the shock absorption component reduces the vibration of the pipeline layer by layer and is eventually absorbed by the shock absorption pad, preventing it from being transmitted to the flow meter and ensuring that the flow meter measurement is not affected or interfered with. Attached Figure Description

[0018] Figure 1 This is a perspective view of a vortex flow meter proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the adjustment structure of a vortex flow meter proposed in this utility model;

[0020] Figure 3This is a schematic diagram of the steering structure of a vortex flowmeter proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the flow stabilization component structure of a vortex flowmeter proposed in this utility model;

[0022] Figure 5 This is a cross-sectional view of the flow stabilization component structure of a vortex flowmeter proposed in this utility model;

[0023] Figure 6 This is a schematic diagram of the shock absorption component structure of a vortex flowmeter proposed in this utility model.

[0024] Figure 7 This is a cross-sectional view of the shock absorption component structure of a vortex flowmeter proposed in this utility model.

[0025] Legend:

[0026] 1. Measuring tube; 2. Flange; 3. Flow stabilizing assembly; 31. Flow stabilizing pipe; 32. Rectifier plate; 33. Expansion chamber; 4. Flow guide; 5. Bevel gear one; 6. Bevel gear two; 7. Coupling shaft; 8. Fan blade; 9. Adjusting rod; 10. Knob; 11. Vibration damping assembly; 111. Base; 112. Sleeve; 113. Vibration damping spring; 114. Support rod; 115. Vibration damping pad; 12. Flow meter; 13. Flow sensor; 14. Deswirl device. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1-4This utility model provides an embodiment of a vortex flow meter, comprising a measuring tube 1, flanges 2 fixedly connected to both ends of the measuring tube 1, a flow stabilizing assembly 3 disposed outside the measuring tube 1, the flow stabilizing assembly 3 including a flow stabilizing tube 31, the flow stabilizing tube being installed outside the measuring tube via flanges, a flow straightener 32 fixedly connected inside the flow stabilizing tube 31, an expansion cavity 33 formed inside the flow stabilizing tube 31, the inner diameter of the expansion cavity being smaller than the inner diameter of the flow stabilizing tube, and the end of the expansion cavity near the measuring tube having a smoothly transitioning conical constriction structure, an anti-vortex device 14 fixedly connected inside the end of the measuring tube 1 away from the flow stabilizing assembly 3, a flow guide shroud 4 disposed inside the measuring tube 1, a bevel gear 5 disposed inside the flow guide shroud 4, the four corners of the bevel gear 5 being meshed. A bevel gear 6 is connected to the flow guide shroud 4. The bevel gear 5 and the bevel gear 6 are rotatably connected inside the flow guide shroud 4. A connecting shaft 7 is fixedly connected to the outside of the bevel gear 6. A fan blade 8 is fixedly connected to the end of the connecting shaft 7 away from the bevel gear 6. An adjusting rod 9 is fixedly connected to the outside of the fan blade 8. The adjusting rod 9 is rotatably connected inside the measuring tube 1. A knob 10 is fixedly connected to the end of the adjusting rod 9 away from the fan blade 8. The knob 10 is rotatably connected to the top of the measuring tube 1. A shock-absorbing assembly 11 is provided on the outside of the measuring tube 1. A flow meter 12 is fixedly connected to the top of the shock-absorbing assembly 11. A flow sensor 13 is fixedly connected to the bottom of the flow meter 12. The end of the flow sensor 13 away from the flow meter 12 passes through the shock-absorbing pad 115, the base 111, and the inside of the measuring tube 1.

[0029] Specifically, firstly, the flow stabilizing component 3 is connected to the measuring tube 1 via the flange 2. Then, the flow stabilizing component 3 and the measuring tube 1 are connected to the pipe to be measured, allowing gas to flow from the flow stabilizing component 3 into the measuring tube. As the gas passes through the flow stabilizing component 3, it is rectified and dispersed into multiple stable airflows by the rectifier plate 32. These multiple airflows flow through the flow stabilizing tube 31 and are then integrated into a single stable airflow by the expansion chamber 33. Finally, the gas flows into the measuring tube 1. The guide shroud 4 inside the measuring tube 1 guides the airflow onto the fan blades 8. After passing through the fan blades 8, the airflow forms a vortex and flows within the measuring tube 1. Subsequently, it is detected by the flow sensor 13, and the data is transmitted to the flow meter. Within 12, the vortex is finally eliminated by the devortex 14 and flows into other pipes. When the flow sensor 13 cannot accurately sense the flow due to insufficient flow or other factors, the knob 10 is turned, which drives the adjusting rod 9 to rotate. The fan blade 8 at the bottom of the adjusting rod 9 rotates accordingly, which drives the connecting shaft 7 and the second bevel gear 6 to rotate. The second bevel gear 6 drives the first bevel gear 5 to rotate. The first bevel gear 5 drives all the meshing bevel gears 6 to rotate, which drives the remaining fan blades 8 to rotate. The angle of the fan blades 8 is adjusted so that the force angle of the fan blades 8 increases or decreases to adapt to different flow rates, so that the flow sensor 13 can stably detect the gas flow.

[0030] Reference Figure 5 and Figure 6The shock absorption assembly 11 includes a base 111, a sleeve 112 fixedly connected to the top of the base 111, a shock absorption spring 113 disposed inside the sleeve 112, a support rod 114 fixedly connected to the top of the shock absorption spring 113, the support rod 114 being slidably connected inside the sleeve 112, a shock-absorbing pad 115 fixedly connected to the end of the support rod 114 away from the shock absorption spring 113, and a flow meter 12 fixedly connected to the top of the shock-absorbing pad 115;

[0031] Specifically, when the device is in use, vibrations generated by gas flow or other factors are transmitted from the body of the measuring tube 1 to the damping assembly 11. The base 111 transmits the vibrations to the damping spring 113 inside the sleeve 112. The damping spring 113 continuously undergoes elastic deformation to consume the vibrations. The remaining vibrations are transmitted by the damping spring 113 along the support rod 114 to the shock-absorbing pad 115 and absorbed by the shock-absorbing pad 115, so that the vibrations are not directly transmitted to the flow meter 12 and affect the measurement accuracy of the flow meter 12.

[0032] Working principle: When using this device, firstly, the flow stabilizing component 3 is connected to the measuring tube 1 through the flange 2. Then, the flow stabilizing component 3 and the measuring tube 1 are connected to the pipe to be measured, so that the gas flows from the flow stabilizing component 3 into the measuring tube. When the gas passes through the flow stabilizing component 3, it is organized and dispersed into stable multiple airflows by the rectifier plate 32. When the multiple airflows flow in the flow stabilizing tube 31, they are integrated into a single stable airflow by the expansion chamber 33. Finally, the gas flows into the measuring tube 1. The flow guide shroud 4 in the measuring tube 1 guides the airflow to the fan blade 8. After passing the fan blade 8, the airflow forms a vortex and flows in the measuring tube 1. Subsequently, it is detected by the flow sensor 13 and the data is transmitted to the flow meter 12. Finally, the vortex is eliminated by the devortex 14 and flows into other pipes.

[0033] When the flow sensor 13 fails to detect accurately due to insufficient flow or other factors, turn the knob 10 to rotate the adjusting rod 9. The fan blade 8 at the bottom of the adjusting rod 9 will rotate, which will drive the connecting shaft 7 and the second bevel gear 6 to rotate. The second bevel gear 6 will drive the first bevel gear 5 to rotate, and the first bevel gear 5 will drive all the meshing bevel gears 6 to rotate, which will drive the remaining fan blades 8 to rotate. Adjust the angle of the fan blades 8 to increase or decrease the force angle of the fan blades 8 to adapt to different flow rates, so that the flow sensor 13 can stably detect the gas flow rate.

[0034] When the device is in use, vibrations generated by gas flow or other factors are transmitted from the body of the measuring tube 1 to the damping assembly 11. The base 111 transmits the vibrations to the damping spring 113 inside the sleeve 112. The damping spring 113 continuously undergoes elastic deformation to consume the vibrations. The remaining vibrations are transmitted by the damping spring 113 along the support rod 114 to the shock-absorbing pad 115 and absorbed by the shock-absorbing pad 115, so that the vibrations are not directly transmitted to the flow meter 12 and affect the measurement accuracy of the flow meter 12.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vortex flow meter, comprising a measuring tube (1), characterized in that: Flanges (2) are fixedly connected to both ends of the measuring tube (1). A flow stabilizing component (3) is provided on the outside of the measuring tube (1). A deswirl deflector (14) is fixedly connected inside the end of the measuring tube (1) away from the flow stabilizing component (3). A flow guide (4) is provided inside the measuring tube (1). A bevel gear (5) is provided inside the flow guide (4). A bevel gear (6) is meshed with the four corners of the bevel gear (5). A connecting shaft (7) is fixedly connected to the outside of the bevel gear (6). A fan blade (8) is fixedly connected to the end of the connecting shaft (7) away from the bevel gear (6). An adjusting rod (9) is fixedly connected to the outside of the fan blade (8). A knob (10) is fixedly connected to the end of the adjusting rod (9) away from the fan blade (8). A shock-absorbing component (11) is provided on the outside of the measuring tube (1). A flow meter (12) is fixedly connected to the top of the shock-absorbing component (11). A flow sensor (13) is fixedly connected to the bottom of the flow meter (12).

2. The vortex flow meter according to claim 1, characterized in that: The flow stabilizing assembly (3) includes a flow stabilizing tube (31), which is installed outside the measuring tube (1) via a flange. A flow rectifier plate (32) is fixedly connected inside the flow stabilizing tube (31), and an expansion cavity (33) is opened inside the flow stabilizing tube (31).

3. The vortex flow meter according to claim 1, characterized in that: The shock absorption assembly (11) includes a base (111), a sleeve (112) is fixedly connected to the top of the base (111), a shock absorption spring (113) is provided inside the sleeve (112), a support rod (114) is fixedly connected to the top of the shock absorption spring (113), a shock-absorbing pad (115) is fixedly connected to the end of the support rod (114) away from the shock absorption spring (113), and a flow meter (12) is fixedly connected to the top of the shock-absorbing pad (115).

4. A vortex flow meter according to claim 3, characterized in that: The support rod (114) is slidably connected inside the sleeve (112).

5. A vortex flow meter according to claim 1, characterized in that: The end of the flow sensor (13) away from the flow meter (12) passes through the interior of the shock-absorbing pad (115), the base (111) and the measuring tube (1).

6. A vortex flow meter according to claim 1, characterized in that: The first bevel gear (5) and the second bevel gear (6) are rotatably connected inside the shroud (4).

7. A vortex flow meter according to claim 1, characterized in that: The adjusting rod (9) is rotatably connected inside the measuring tube (1), and the knob (10) is rotatably connected to the top of the measuring tube (1).

8. A vortex flow meter according to claim 2, characterized in that: The inner diameter of the expansion cavity (33) is smaller than the inner diameter of the flow stabilizing tube (31), and the end of the expansion cavity (33) near the measuring tube (1) has a smoothly transitioning tapered end structure.

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