A new target flowmeter

Abstract

This utility model relates to the field of flow measurement device technology and discloses a novel target-type flow meter, including an inlet pipe, a flow measuring tube fixedly connected to the outside of the inlet pipe, a flow meter fixedly connected to the end of the flow measuring tube away from the inlet pipe, a target rod disposed at the bottom of the flow meter, a target plate fixedly connected to the end of the target rod away from the flow meter, a connecting shaft disposed inside the target rod, a front rocker arm disposed outside the connecting shaft, a pre-tensioning spring disposed outside the front rocker arm, a fixed cylinder disposed at the end of the front rocker arm away from the connecting shaft, and a rear rocker arm disposed at the end of the connecting shaft away from the front rocker arm. In this utility model, through the cooperation of the front rocker arm, the rear rocker arm, the connecting shaft, and the pre-tensioning spring, the weight of the target rod and the target plate is offset by the pre-tensioning spring, and the target rod does not adhere to the inner wall of the flow measuring tube, so that the target rod is not affected by other factors. Compared with traditional target-type flow meters, the measurement effect is better and the result is more accurate.

Description

Technical Field

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

[0002] A target flow meter is a flow measurement device based on the principle of force balance. Its core function is to accurately measure the flow rate of fluids such as liquids, gases, or steam in closed pipes. It converts the impact force of the fluid on the target plate into a detectable signal, which is transmitted to the main body of the flow meter through an internal mechanism and finally outputs flow data. It is widely used in industrial fields such as petroleum, chemical, metallurgy, and water treatment, providing reliable data support for flow monitoring, process adjustment, and energy consumption statistics in the production process. It is especially suitable for measuring high-viscosity fluids and fluids containing impurities, making up for some of the shortcomings of traditional flow meters in terms of applicable scenarios.

[0003] Traditional target flow meters mainly consist of a measuring tube, a target, a force sensor, and a signal processing unit. Some models include a damper to stabilize the signal. In use, fluid flows through the measuring tube and impacts the target, generating an impact force. This force is proportional to the square of the fluid velocity, the density, and the area of ​​the target. The force sensor converts the impact force into an electrical signal, which is then calculated by the processing unit to finally output a standard signal related to the flow rate, thus achieving flow measurement.

[0004] However, the weight of the target plate and target rod in traditional target flow meters will generate a constant additional force on the force sensor, causing zero drift. Repeated calibration is required after installation. The rigid connection force transmission structure is easily affected by pipeline vibration and fluid turbulence, resulting in force signal distortion. The target plate size and installation angle of traditional target flow meters are fixed. When measuring high-speed fluids, the resistance of the fixed target plate is too large, which can easily exceed the range of the force sensor. When measuring low speeds, the resistance of the fixed target plate is too small, and the impact force is insufficient to be captured by the sensor. The small flow signal is easily masked by noise.

[0005] Therefore, a novel target-type 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 novel target-type flow meter, which aims to improve the problems of rigid connection between the target plate and the target rod and the inability to adjust the target plate angle in the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a novel target-type flow meter, comprising an inlet pipe, connecting plates fixedly connected to both ends of the inlet pipe, a flow measuring tube fixedly connected to the outside of the inlet pipe, a flow meter fixedly connected to the end of the flow measuring tube away from the inlet pipe, a target rod provided at the bottom of the flow meter, a target plate fixedly connected to the end of the target rod away from the flow meter, a connecting shaft provided inside the target rod, a front rocker arm provided outside the connecting shaft, a pre-tensioning spring provided outside the front rocker arm, a fixed cylinder provided at the end of the front rocker arm away from the connecting shaft, a rear rocker arm provided at the end of the connecting shaft away from the front rocker arm, and a steering assembly provided outside the flow measuring tube.

[0008] Furthermore, the steering assembly includes a steering cylinder, which is fixedly connected to the inside of the flow measuring tube. A knob is fixedly connected to the end of the steering cylinder away from the flow measuring tube. A steering rod is fixedly connected to the bottom of the knob. A bevel gear four is fixedly connected to the end of the steering rod away from the knob. A bevel gear three meshes with the outside of the bevel gear four. A drive shaft is fixedly connected to the outside of the bevel gear three. A bevel gear two is fixedly connected to the end of the drive shaft away from the bevel gear three. A bevel gear one meshes with the outside of the bevel gear two.

[0009] Furthermore, the bevel gear is disposed outside the target rod and is rotatably connected inside the flow measuring tube.

[0010] Furthermore, the bevel gear three and bevel gear four are rotatably connected inside the steering cylinder.

[0011] Furthermore, the steering rod is rotatably connected inside the steering cylinder, and the knob is rotatably connected to the top of the steering cylinder.

[0012] Furthermore, the front rocker arm and the rear rocker arm are rotatably connected to the outside of the coupling shaft, and the front rocker arm and the rear rocker arm are rotatably connected to the inside of the fixed cylinder.

[0013] Furthermore, the target rod is rotatably connected inside the flow measuring tube, and the target plate is rotatably connected inside the liquid inlet tube.

[0014] Furthermore, the flow meter flange is connected to the outside of the inlet pipe.

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

[0016] 1. In this utility model, the weight of the target rod and target plate is offset by the pre-tension spring through the cooperation of the front rocker arm, the rear rocker arm, the connecting shaft and the pre-tension spring, and the target rod will not stick to the inner wall of the flow measuring tube, so that the target rod will not be affected by other factors. Compared with the traditional target flow meter, the measurement effect is better and the result is more accurate.

[0017] 2. In this utility model, through the design of the steering component, when measuring liquids with high or low flow rates, the target plate can be rotated by turning the knob to adjust the force-bearing area of ​​the target plate to adapt to different liquids. Compared with the traditional target flow meter, it has a wider range of applications and more accurate measurement results. Attached Figure Description

[0018] Figure 1 This is a perspective view of a novel target-type flow meter proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the measurement structure of a novel target flowmeter proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the swing structure of a novel target flowmeter proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the steering assembly of a novel target flow meter proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the transmission structure of a novel target-type flow meter proposed in this utility model.

[0023] Legend:

[0024] 1. Inlet pipe; 2. Connecting plate; 3. Flow measuring pipe; 4. Flow meter; 5. Target rod; 6. Target plate; 7. Coupling shaft; 8. Front rocker arm; 9. Preload spring; 10. Rear rocker arm; 11. Fixed cylinder; 12. Steering assembly; 121. Steering cylinder; 122. Bevel gear one; 123. Bevel gear two; 124. Drive shaft; 125. Bevel gear three; 126. Bevel gear four; 127. Steering rod; 128. Knob. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1-3This utility model provides an embodiment of a novel target-type flow meter, comprising an inlet pipe 1, with connecting plates 2 fixedly connected to both ends of the inlet pipe 1, a flow measuring pipe 3 fixedly connected to the outside of the inlet pipe 1, a flange connecting the flow measuring pipe 3 to the outside of the inlet pipe 1, a flow meter 4 fixedly connected to the end of the flow measuring pipe 3 away from the inlet pipe 1, a target rod 5 provided at the bottom of the flow meter 4, the target rod 5 being rotatably connected to the inside of the flow measuring pipe 3, and a target plate 6 fixedly connected to the end of the target rod 5 away from the flow meter 4. The target rod 5 is rotatably connected inside the inlet pipe 1. A connecting shaft 7 is provided inside the target rod 5. A front rocker arm 8 is provided outside the connecting shaft 7. A preload spring 9 is provided outside the front rocker arm 8. A fixed cylinder 11 is provided at the end of the front rocker arm 8 away from the connecting shaft 7. The front rocker arm 8 and the rear rocker arm 10 are rotatably connected inside the fixed cylinder 11. The rear rocker arm 10 is provided at the end of the connecting shaft 7 away from the front rocker arm 8. The front rocker arm 8 and the rear rocker arm 10 are rotatably connected outside the connecting shaft 7. A steering assembly 12 is provided outside the flow measuring tube 3.

[0027] Specifically, firstly, the inlet pipe 1 is connected to the pipe to be measured through the connecting plates 2 at both ends. Then, the valve of the pipe is opened to allow the liquid to flow into the inlet pipe 1. The liquid then impacts the target plate 6, causing the target rod 5 to swing. When the target rod 5 swings inside the flow measuring pipe 3, it drives the connecting shaft 7 to move. The connecting shaft 7 drives the front rocker arm 8 and the rear rocker arm 10 to rotate inside the fixed cylinder 11. The pre-tension spring 9 pulls the front rocker arm 8 to prevent it from sagging, while increasing the impact force of the liquid, making the measurement result of the flow meter 4 more accurate. The rear rocker arm 10 balances the movement direction of the target rod 5 to ensure accurate measurement results.

[0028] Reference Figure 4 and Figure 5 The steering assembly 12 includes a steering cylinder 121, which is fixedly connected to the inside of the flow measuring tube 3. A knob 128 is fixedly connected to the end of the steering cylinder 121 away from the flow measuring tube 3. The knob 128 is rotatably connected to the top of the steering cylinder 121. A steering rod 127 is fixedly connected to the bottom of the knob 128. The steering rod 127 is rotatably connected to the inside of the steering cylinder 121. A bevel gear four 126 is fixedly connected to the end of the steering rod 127 away from the knob 128. A bevel gear three 125 meshes with the outside of the bevel gear four 126. The bevel gear three 125 and the bevel gear four 126 are rotatably connected to the inside of the steering cylinder 121. A drive shaft 124 is fixedly connected to the outside of the bevel gear three 125. A bevel gear two 123 is fixedly connected to the end of the drive shaft 124 away from the bevel gear three 125. A bevel gear one 122 meshes with the outside of the bevel gear two 123. The bevel gear one 122 is disposed outside the target rod 5 and is rotatably connected to the inside of the flow measuring tube 3.

[0029] Specifically, when the measured liquid flow rate is too high or too low, the angle of the target plate 6 can be adjusted by the steering assembly 12 to increase or decrease the force-bearing area of ​​the target plate 6, making the measurement results more accurate. In use, by turning the knob 128, the steering rod 127 is rotated, the steering rod 127 drives the fourth bevel gear 126 to rotate, the fourth bevel gear 126 drives the third bevel gear 125 to rotate, the third bevel gear 125 drives the transmission shaft 124 and the second bevel gear 123 to rotate in the steering cylinder 121, the second bevel gear 123 drives the first bevel gear 122 and the target rod 5 to rotate, and the target rod 5 drives the target plate 6 to rotate, thereby adjusting the angle of the target plate 6 and realizing the adjustment of the force-bearing area of ​​the target plate 6.

[0030] Working principle: When using this device, first connect the inlet pipe 1 to the pipe to be measured through the connecting plates 2 at both ends. Then open the valve of the pipe to allow the liquid to flow into the inside of the inlet pipe 1. The liquid then impacts the target plate 6, causing the target rod 5 to swing. When the target rod 5 swings in the flow measuring tube 3, it drives the connecting shaft 7 to move. The connecting shaft 7 drives the front rocker arm 8 and the rear rocker arm 10 to rotate in the fixed cylinder 11. The pre-tension spring 9 pulls the front rocker arm 8 to prevent it from sagging, while increasing the impact force of the liquid, making the measurement result of the flow meter 4 more accurate. The rear rocker arm 10 balances the movement direction of the target rod 5 to ensure accurate measurement results.

[0031] When the measured liquid flow rate is too high or too low, the angle of the target plate 6 can be adjusted by the steering assembly 12 to increase or decrease the force-bearing area of ​​the target plate 6, making the measurement results more accurate. In use, by turning the knob 128, the steering rod 127 is driven to rotate. The steering rod 127 drives the fourth bevel gear 126 to rotate. The fourth bevel gear 126 drives the third bevel gear 125 to rotate. The third bevel gear 125 drives the transmission shaft 124 and the second bevel gear 123 to rotate in the steering cylinder 121. The second bevel gear 123 drives the first bevel gear 122 and the target rod 5 to rotate. The target rod 5 drives the target plate 6 to rotate, thereby adjusting the angle of the target plate 6.

[0032] 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 novel target-type flow meter, comprising an inlet pipe (1), characterized in that: The inlet pipe (1) is fixedly connected to both ends of a connecting plate (2). The inlet pipe (1) is fixedly connected to a flow measuring pipe (3). The flow measuring pipe (3) is fixedly connected to a flow meter (4) at one end away from the inlet pipe (1). A target rod (5) is provided at the bottom of the flow meter (4). A target plate (6) is fixedly connected to the end of the target rod (5) away from the flow meter (4). A connecting shaft (7) is provided inside the target rod (5). A front rocker arm (8) is provided outside the connecting shaft (7). A pre-tensioning spring (9) is provided outside the front rocker arm (8). A fixed cylinder (11) is provided at one end of the front rocker arm (8) away from the connecting shaft (7). A rear rocker arm (10) is provided at one end of the connecting shaft (7) away from the front rocker arm (8). A steering assembly (12) is provided outside the flow measuring pipe (3).

2. The novel target flow meter according to claim 1, characterized in that: The steering assembly (12) includes a steering cylinder (121), which is fixedly connected to the inside of the flow measuring tube (3). A knob (128) is fixedly connected to one end of the steering cylinder (121) away from the flow measuring tube (3). A steering rod (127) is fixedly connected to the bottom of the knob (128). A bevel gear four (126) is fixedly connected to one end of the steering rod (127) away from the knob (128). A bevel gear three (125) meshes with the outside of the bevel gear four (126). A drive shaft (124) is fixedly connected to the outside of the bevel gear three (125). A bevel gear two (123) is fixedly connected to one end of the drive shaft (124) away from the bevel gear three (125). A bevel gear one (122) meshes with the outside of the bevel gear two (123).

3. The novel target flow meter according to claim 2, characterized in that: The first bevel gear (122) is located outside the target rod (5) and is rotatably connected inside the flow measuring tube (3).

4. A novel target-type flow meter according to claim 2, characterized in that: The bevel gear three (125) and bevel gear four (126) are rotatably connected inside the steering cylinder (121).

5. A novel target-type flow meter according to claim 2, characterized in that: The steering rod (127) is rotatably connected inside the steering cylinder (121), and the knob (128) is rotatably connected to the top of the steering cylinder (121).

6. A novel target-type flow meter according to claim 1, characterized in that: The front rocker arm (8) and the rear rocker arm (10) are rotatably connected to the outside of the connecting shaft (7), and the front rocker arm (8) and the rear rocker arm (10) are rotatably connected to the inside of the fixed cylinder (11).

7. A novel target-type flow meter according to claim 1, characterized in that: The target rod (5) is rotatably connected inside the flow measuring tube (3), and the target plate (6) is rotatably connected inside the liquid inlet tube (1).

8. A novel target-type flow meter according to claim 1, characterized in that: The flow meter (3) is flanged and connected to the outside of the inlet pipe (1).

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