Pipeline flow sensor
By using magnetic components and electrode rings in the pipeline flow sensor, the problem of signal instability in traditional flow sensors under low flow conditions is solved, achieving signal continuity and accuracy, and improving detection performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional flow sensors are prone to signal instability and noise under low flow conditions, which affects detection accuracy and equipment safety.
Design a pipeline flow sensor that uses a magnetic component inside a cylindrical shell to generate a magnetic field and sets electrode rings at the front and rear ends. The fluid contacts the electrode rings from the inflow side and the outflow side respectively, forming a closed loop to ensure signal continuity. When the flow is interrupted, only one electrode ring contacts to eliminate noise.
It achieves signal continuity and stability under low flow conditions, eliminates signal noise, and improves the accuracy of flow detection and equipment safety.
Smart Images
Figure CN224004469U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline sensing technology, and in particular to a pipeline flow sensor. Background Technology
[0002] Pipeline flow detection is a crucial element in industrial process control, energy management, and environmental protection. Real-time monitoring of fluid flow can optimize production processes, improve energy efficiency, reduce resource waste, and ensure safe equipment operation. For example, in industries such as chemical, petroleum, and water / heat supply, accurate flow data can prevent pipeline leaks, overloads, or idling, reducing maintenance costs. In the environmental field, flow monitoring helps control wastewater discharge and rationally allocate resources. Furthermore, with the development of intelligent and IoT technologies, flow data has become the foundation of digital management, providing vital support for predictive maintenance and system automation. Therefore, efficient and accurate flow detection is essential for ensuring industrial stability, economic viability, and sustainability.
[0003] Traditional flow detection methods mainly rely on electromagnetic flow meters. However, traditional electromagnetic flow meters either use multiple electrode plates to contact the fluid to obtain electrical signals, which makes it difficult to form a closed loop to provide feedback when the flow rate is low, resulting in intermittent electrical signals; or they use cylindrical electrodes inside the pipe to ensure that there is an electrical signal feedback as long as fluid flows through. However, this also results in feedback when the fluid flow is interrupted or intermittent, and these extremely low flow signals are meaningless to collect, as acquiring them only increases signal noise. Utility Model Content
[0004] To address the aforementioned shortcomings, the purpose of this invention is to propose a pipeline flow sensor that solves the signal stability and signal noise problems of traditional flow sensors.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A pipeline flow sensor includes a cylindrical shell and two electrode rings; a magnetic component is provided inside the cylindrical shell to generate a magnetic field inside the cylinder of the cylindrical shell.
[0007] The two electrode rings are respectively disposed at the front end and the rear end of the cylindrical shell.
[0008] Furthermore, the magnetic component is disposed in the middle of the inner shell of the cylindrical shell, and the cylindrical shell is recessed into the inner shell at the front end and rear end of the magnetic component to form electrical limit grooves, and the electrode ring is nested in the electrical limit grooves.
[0009] Furthermore, the sidewall of the electrical limit groove is provided with at least one electrode through hole, and the electrode ring is provided with an electrode protrusion corresponding to the electrode through hole, and the electrode protrusion and the electrode through hole are fitted together.
[0010] Furthermore, the magnetic component includes a first magnetic element and a second magnetic element; the left inner space of the cylindrical shell protrudes inward to accommodate the first magnetic element; the right inner space of the cylindrical shell protrudes inward to accommodate the second magnetic element; a magnetic field is generated between the first magnetic element and the second magnetic element.
[0011] Furthermore, the first magnetic component is an electromagnet, the second magnetic component is a permanent magnet, and the polarities of the first magnetic component and the second magnetic component are set to be opposite.
[0012] Furthermore, the inner periphery of the cylindrical shell is provided with an electrical connection channel leading to the outside, which is used for the first conductive component to pass through and electrically connect with the first magnetic component.
[0013] Furthermore, the outer periphery of the cylindrical shell is provided with a sealing fastener or a sealing fastener structure.
[0014] The technical solution provided by this utility model can include the following beneficial effects: by setting electrode rings at the front and rear ends of the magnetic field inside the cylindrical shell, the fluid in the pipe can contact the electrode rings from the inflow side and the outflow side respectively. Thus, when the fluid flow is not interrupted, the ring electrode can always contact the fluid cutting the magnetic field lines to form a closed loop, and feed back the generated electrical signal (such as electromotive force) to the controller outside the pipe for recognition, ensuring the continuity of the signal. At the same time, when the fluid flow is interrupted, it is highly likely that only one electrode ring will be in contact, thus failing to form an electrode ring-fluid-electrode ring closed loop, and therefore failing to feed back the electrical signal, thus eliminating signal noise. Attached Figure Description
[0015] Figure 1 This is a partial assembly drawing of a pipeline flow sensor according to one embodiment of the present invention.
[0016] Figure 2 Is it like this? Figure 1 The image shows a front view of a pipeline flow sensor.
[0017] The components include: cylindrical shell 1, electrode ring 2, magnetic component 11, electrical limit groove 12, electrode through hole 121, electrode protrusion 21, first magnetic component 111, second magnetic component 112, and electrical connection channel 13. Detailed Implementation
[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0019] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish and describe features, without any order or emphasis.
[0020] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0021] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.
[0022] The following is combined Figures 1 to 2 This describes a pipeline flow sensor according to an embodiment of the present invention.
[0023] A pipeline flow sensor includes a cylindrical shell 1 and two electrode rings 2; a magnetic component 11 is provided inside the cylindrical shell 1, which is used to generate a magnetic field inside the cylindrical shell 1.
[0024] Two electrode rings 2 are respectively set at the front and rear ends of the cylindrical outer shell 1.
[0025] This utility model proposes a preferred embodiment of a pipeline flow sensor, such as... Figure 1 and 2As shown, by setting electrode rings 2 at the front and rear ends of the magnetic field inside the cylindrical shell 1, the fluid in the pipe can contact the electrode rings 2 from the inflow side and the outflow side respectively. Thus, when the fluid flow is not interrupted, the ring electrode can always contact the fluid cutting the magnetic field lines to form a closed loop, and feed the generated electrical signal (such as electromotive force) back to the controller outside the pipe for recognition, ensuring the continuity of the signal. At the same time, when the fluid flow is interrupted, it is highly likely that only one of the electrode rings 2 will be in contact, so the closed loop of electrode ring 2-fluid-electrode ring 2 cannot be formed, and the electrical signal cannot be fed back, thus eliminating signal noise.
[0026] Furthermore, the magnetic component 11 is disposed in the middle of the inner shell of the cylindrical shell 1, and the cylindrical shell 1 is recessed into the inner shell at the front end and rear end of the magnetic component 11 to form an electrical limit groove 12, and the electrode ring 2 is nested in the electrical limit groove 12.
[0027] In this embodiment, in order to keep the positional relationship between the two electrode rings 2 and the cylindrical shell 1 unchanged (to avoid the electrode rings 2 being biased due to fluid impact), the cylindrical shell 1 is recessed into the cylinder at the front end and rear end of the magnetic component 11 to form an electrical limit groove 1 for nesting and installing the electrode rings 2.
[0028] Furthermore, the sidewall of the limit groove 12 is provided with at least one electrode through hole 121, and the electrode ring 2 is provided with an electrode protrusion 21 corresponding to the electrode through hole 121. The electrode protrusion 21 and the electrode through hole 121 are fitted together.
[0029] In this embodiment, in order to more securely mount the electrode ring 2 on the cylindrical outer shell 1 and facilitate the electrode ring 2 to feed back signals to the controller outside the pipe, at least one electrode through hole 121 is provided on the side wall of the electrical limit groove 12 for fitting and connecting with the electrode protrusion 21 of the electrode ring 2. At the same time, after the through hole is opened in the pipe corresponding to the electrode protrusion 21, the electrode protrusion 21 can extend out of the pipe and be electrically connected to the controller, or the electrode protrusion 21 can extend out of the pipe through wires, copper sheets, etc. and be electrically connected to the controller.
[0030] Furthermore, the magnetic component 11 includes a first magnetic element 111 and a second magnetic element 112; the left inner space of the cylindrical outer shell 1 protrudes into the cylinder for housing the first magnetic element 111; the right inner space of the cylindrical outer shell 1 protrudes into the cylinder for housing the second magnetic element 112; a magnetic field is generated between the first magnetic element 111 and the second magnetic element 112.
[0031] In this embodiment, based on the need to generate a magnetic field inside the cylindrical outer shell 1, the magnetic component 11 is composed of a first magnetic element 111 and a second magnetic element 112, respectively disposed on the left and right sides inside the cylinder. A magnetic field is generated between the first magnetic element 111 and the second magnetic element 112, so that the fluid flowing through the cylinder can cut the magnetic field lines and generate an electromotive force. More importantly, the cylindrical outer shell 1 forms an internal space by protruding inward for installing the first magnetic element 111 and the second magnetic element 112. By reducing the space on the left and right sides inside the cylinder, the fluid can be gathered. Even when the fluid flow rate is small, it can still gather and cut the magnetic field lines, thus identifying the flow rate of small-flow fluid.
[0032] Furthermore, the first magnetic component 111 is an electromagnet, the second magnetic component 112 is a permanent magnet, and the polarities of the opposite sides of the first magnetic component 111 and the second magnetic component 112 are set to be opposite.
[0033] In this embodiment, the first magnetic element 111 and the second magnetic element 112 can be a combination of two electromagnets or a combination of two permanent magnets to generate a magnetic field. However, it is more preferable that the first magnetic element 111 is an electromagnet and the second magnetic element 112 is a permanent magnet, which can adjust the sensitivity of flow sensing. When the required flow sensitivity is low, only the second magnetic element 112 can be used to generate a magnetic field. The magnetic field lines are emitted from the N pole of the permanent magnet back to the S pole. Since the magnetic field lines are arcs, the number of magnetic field lines cut by the fluid is small, so the sensitivity to flow is low. When the required flow sensitivity is high, the first magnetic element 111 can be energized, so that the two magnetic elements attract each other to generate magnetic field lines that span the space inside the cylinder. In this way, the number of magnetic field lines cut by the fluid is larger, and the sensitivity to flow is higher. At the same time, the magnetic field strength can be further increased by increasing the energizing voltage of the first magnetic element 111, thereby further improving the sensitivity to flow.
[0034] Furthermore, the inner side of the cylindrical outer shell 1 is provided with an electrical connection channel 13 leading to the outside. The electrical connection channel 13 is used for the first conductive component to pass through and electrically connect with the first magnetic component 111.
[0035] In this embodiment, the first magnetic component 111 is an electromagnet, which needs to be controlled by a controller (such as an MCU). Therefore, the inner side of the cylindrical outer shell 1 needs to be provided with an electrical connection channel 13 leading to the outside, which is used for the first conductive component (such as a wire, copper sheet, etc.) to pass through and electrically connect with the electromagnet (i.e., the first conductive component electrically connects the electromagnet and the controller).
[0036] Furthermore, the outer periphery of the cylindrical shell 1 is provided with a sealing fastener or a sealing fastener structure.
[0037] In this embodiment, since the cylindrical outer shell 1 needs to be embedded in the pipeline, the outer periphery of the cylindrical outer shell 1 needs to be provided with a sealing fastener (such as sealing silicone) or a sealing fastener structure (such as a flange or thread) to prevent fluid leakage and ensure the safety of the pipeline system.
[0038] Other components and operations of a pipeline flow sensor according to an embodiment of the present invention are known to those skilled in the art and will not be described in detail here.
[0039] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A pipe flow sensor, characterized by: The application relates to a magnetic field generator comprising a cylindrical shell and two electrode rings; a magnetic assembly is arranged in the shell of the cylindrical shell, and the magnetic assembly is used for generating a magnetic field in the cylinder of the cylindrical shell; The two electrode rings are arranged at the front end and the rear end of the cylindrical shell respectively.
2. A flow sensor for a pipe according to claim 1, wherein: The magnetic assembly is arranged in the middle part of the shell of the cylindrical shell, the front end and the rear end of the magnetic assembly are recessed towards the cylinder to form electrode limiting grooves, and the electrode rings are embedded in the electrode limiting grooves.
3. A flow sensor for a pipe according to claim 2, wherein: At least one electrode through hole is arranged in the side wall of the electrode limiting groove, the electrode ring is provided with an electrode protrusion corresponding to the electrode through hole, and the electrode protrusion and the electrode through hole are embeddedly connected.
4. A flow sensor for a pipe according to claim 1, wherein: The magnetic assembly comprises a first magnetic part and a second magnetic part; the left inner space of the cylindrical shell is protruded towards the cylinder, and is used for arranging the first magnetic part; the right inner space of the cylindrical shell is protruded towards the cylinder, and is used for arranging the second magnetic part; and the first magnetic part and the second magnetic part generate a magnetic field.
5. A flow sensor for a pipe according to claim 4, wherein: The first magnetic part is an electromagnet, the second magnetic part is a permanent magnet, and the opposite sides of the first magnetic part and the second magnetic part are opposite in polarity.
6. A flow sensor for a pipe according to claim 5, wherein: An electric connection channel leading to the outside is arranged on the outer circumferential side of the shell of the cylindrical shell, and the electric connection channel is used for allowing a first conductive part to pass through and be electrically connected with the first magnetic part.
7. A flow sensor for a pipe according to claim 1, wherein: Airtight fixing parts or airtight fixing structures are arranged on the outer circumferential side of the cylindrical shell.