Full-scale pipeline flowmeter
By designing a full-range pipeline flow meter, and utilizing a combination of a flow velocity impeller and a U-shaped resistance tube, the monitoring error problem of existing flow meters in non-full-pipe flow conditions is solved, enabling accurate monitoring of both full-pipe and non-full-pipe flow, and improving the measurement accuracy of the flow meter.
Patent Information
- Application Number
- CN202423066208.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing electromagnetic and ultrasonic flow meters have large flow monitoring errors or cannot monitor flow when the flow is not full, and cannot meet the requirements for full-range flow monitoring.
Design a full-range pipeline flow meter that uses a combination of multiple velocity impellers and U-shaped resistance tubes. The velocity impellers capture the water flow velocity, and the U-shaped resistance tubes monitor the water level. The low-voltage circuitry reduces external interference and calculates the water flow rate.
It enables accurate monitoring of flow rates in both full and non-full pipes, reduces the impact of external factors on measurement results, and improves the accuracy of flow monitoring.
Smart Images
Figure CN223485226U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of flow meter technology, specifically relating to a full-range pipeline flow meter. Background Technology
[0002] Currently, pipeline flow meters are widely used in the fields of hydrology and water affairs, mainly ultrasonic flow meters and electromagnetic flow meters. Both electromagnetic flow meters and ultrasonic flow meters have good monitoring effects when the pipe is full of flow, but when the pipe is not full of flow, the flow monitoring value has a large error or even cannot monitor the flow.
[0003] Therefore, in order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a flow meter that can monitor both full-pipe flow and non-full-pipe flow. Summary of the Invention
[0004] This utility model provides a full-range pipeline flow meter that can monitor both full-pipe flow and non-full-pipe flow. The specific solution is as follows:
[0005] A full-range pipeline flow meter includes a flow meter pipeline with flanges connected to both ends. A mounting bracket is installed inside the flow meter pipeline, facing the water flow direction. Multiple flow velocity impellers, each equipped with electrical contacts, are arrayed on the mounting bracket, also facing the water flow direction. A monitoring component for monitoring water level is installed inside the flow meter pipeline. A data acquisition calculator is located on the upper surface of the middle section of the flow meter pipeline, and a display is mounted on the data acquisition calculator. The circuit breakers of the electrical contacts and the monitoring component are connected to the data acquisition calculator via wires, and the data acquisition calculator is connected to the display via wires.
[0006] Furthermore, there are five flow velocity impellers, one of which is arranged along the central axis of the flow meter pipe, and the other four are respectively located in the four directions of the flow velocity impeller on the central axis and are arranged perpendicular to it.
[0007] Furthermore, the monitoring component is a U-shaped resistor tube, which is connected to the data acquisition calculator via a wire.
[0008] Furthermore, the mounting bracket includes two rows of support columns arranged at intervals, with three support columns in each row and both ends of the support columns connected to the upper and lower side walls of the flow meter pipe, respectively. A flow velocity impeller is horizontally connected between the middle two support columns, and the other four flow velocity impellers are respectively arranged between the upper and lower sides of the support columns on both sides and between the upper and lower sides of the middle support column.
[0009] The beneficial effects of the utility model are:
[0010] This utility model discloses a full-range pipeline flow meter. By setting multiple velocity impellers and a monitoring component that can monitor water level, the multiple velocity impellers can more comprehensively capture the water flow velocity at different locations within the flow meter pipeline, thereby calculating a more accurate average flow velocity within the pipe. Furthermore, by measuring the change in loop resistance value caused by different submersion depths of the U-shaped resistance tube, the submersion depth of the resistance tube can be accurately calculated, thus estimating the water level within the pipe. The use of a low-voltage circuit for water level monitoring effectively reduces the influence of external factors (such as electromagnetic interference, noise, etc.) on the measurement results, improving the accuracy of water level measurement. Finally, the water flow rate is obtained from the obtained average flow velocity and water level depth, achieving the goal of monitoring both full-pipe and non-full-pipe flow rates, thereby improving the accuracy of water flow rate monitoring. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this utility model.
[0012] Figure 2 This is a side view of the present invention.
[0013] Figure 3 for Figure 2 Sectional view of AA.
[0014] Figure 4 This is a cross-sectional view of the monitoring component of this utility model.
[0015] Figure 5 This is a schematic diagram of the current flow direction of the monitoring component of this utility model.
[0016] Explanation of reference numerals in the attached diagram: 1. Flow meter pipe; 3. Mounting bracket; 4. Flow velocity impeller; 5. Monitoring component; 6. Data acquisition calculator; 7. Display. Detailed Implementation
[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0018] See Figure 1-5A full-range pipeline flow meter includes a flow meter pipe 1, with flanges 2 connected to both ends of the flow meter pipe 1, which are respectively connected to an upstream pipeline and a downstream pipeline. A mounting bracket 3 is installed inside the flow meter pipe 1, facing the direction of water flow. Multiple velocity impellers 4, each equipped with an electrical contact, are arrayed on the mounting bracket 3. Each rotation of a velocity impeller 4 triggers the electrical contact and sends a pulse signal to a data acquisition calculator 6. The data acquisition calculator 6 is existing technology and is equipped with a calculation formula that calibrates the water flow rate based on the water flow velocity and water level area. The data acquisition calculator 6 calculates the average water flow velocity using the internally calibrated formula and velocity coefficient. Multiple velocity impellers 4 are oriented towards the water flow direction. A monitoring component 5 for monitoring water level is installed inside the flow meter pipe 1. The data acquisition calculator 6 is located on the upper surface of the middle section of the flow meter pipe 1 and has a display 7. The electrical contact switch and the monitoring component 5 are both connected to the data acquisition calculator 6 via wires, and the data acquisition calculator 6 is connected to the display 7 via wires.
[0019] There are five flow velocity impellers 4, one of which is set along the central axis of the flow meter pipe 1, and the other four are located in the four directions of the flow velocity impeller 4 on the central axis and are set perpendicular to it. This allows the multiple flow velocity impellers 4 to be evenly arranged in the flow meter pipe 1, thereby more accurately monitoring the water flow velocity in the pipe.
[0020] The monitoring component 5 is a U-shaped resistor tube, which is connected to the data acquisition calculator 6 via a wire. It can monitor the water level through a low-voltage circuit, effectively reducing the impact of external factors (such as electromagnetic interference, noise, etc.) on the measurement results and improving the accuracy of water level measurement.
[0021] The preferred mounting bracket 3 includes two rows of support columns arranged at intervals, wherein each row of support columns has three columns and the two ends of the support columns are connected to the upper and lower side walls of the flow meter pipe 1 respectively. A flow velocity impeller 4 is horizontally connected between the middle two support columns, and the other four flow velocity impellers 4 are respectively arranged between the upper and lower sides of the support columns on both sides and between the upper and lower sides of the middle support column.
[0022] The working principle of this utility model is as follows: First, the data acquisition calculator 6 has a pre-calibrated formula for calculating the flow rate based on the water flow velocity and water level area. When the water flows through multiple velocity impellers 4, the different velocity impellers 4 rotate due to the water level depth. At this time, every time the velocity impeller 4 rotates once, the electrical contact on it sends a pulse signal to the data acquisition calculator 6. The data acquisition calculator 6 calculates the average flow velocity of the water flow using the pre-calibrated formula and the velocity coefficient. Then, the change in the loop resistance value caused by the different submersion depths of the U-shaped resistance tube is used to accurately calculate the submersion depth of the resistance tube by measuring the loop current, thereby calculating the water level in the flow meter pipe 1. After determining the water level, the area corresponding to different water levels is used to calculate the cross-sectional area of the flow passage. Finally, the flow rate in the pipe can be obtained by calculating the area and the average flow velocity.
[0023] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.
[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A full-range pipeline flow meter, characterized in that: The system includes a flow meter pipe (1), with flanges (2) connected to both ends of the flow meter pipe (1). A mounting bracket (3) is provided inside the flow meter pipe (1), facing the direction of water flow. Multiple flow velocity impellers (4) with electrical contacts are arrayed on the mounting bracket (3), facing the direction of water flow. A monitoring component (5) for monitoring water level is provided inside the flow meter pipe (1). A data acquisition calculator (6) is provided on the upper surface of the middle part of the flow meter pipe (1), and a display (7) is provided on the data acquisition calculator (6). The circuit breaker of the electrical contacts and the monitoring component (5) are both connected to the data acquisition calculator (6) through wires. The data acquisition calculator (6) is connected to the display (7) through wires.
2. The full-range pipeline flow meter according to claim 1, characterized in that: The flow impeller (4) consists of five, one of which is set along the central axis of the flow meter pipe (1), and the other four are located on the central axis in four directions of the flow impeller (4) and are set perpendicular to it.
3. The full-range pipeline flow meter according to claim 1, characterized in that: The monitoring component (5) is a U-shaped resistor tube, which is connected to the data acquisition calculator (6) via a wire.
4. A full-range pipeline flow meter according to claim 1, characterized in that: The mounting bracket (3) includes two rows of support columns arranged at intervals, each row of support columns has three columns and the two ends of the support columns are connected to the upper and lower side walls of the flow meter pipe (1). A flow velocity impeller (4) is horizontally connected between the middle two support columns, and the other four flow velocity impellers (4) are respectively arranged between the upper and lower sides of the support columns on both sides and the middle support column.