Pipeline cutoff sensor
The pipe flow interruption sensor, designed by linking the magnetic components inside the cylindrical shell with the rotating conductor mechanism, solves the problem of misjudgment of fluid flow interruption in traditional methods, and realizes real-time and accurate flow interruption monitoring, which is suitable for complex working conditions.
Patent Information
- Application Number
- CN202520714058.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-15
AI Technical Summary
Existing technologies struggle to accurately identify fluid flow interruptions in pipeline systems, especially in low-velocity, two-phase gas-liquid flow, or viscous media, where misjudgments are common. Traditional flow meters and pressure sensors pose a risk of misjudgment, and manual inspections are inefficient and difficult to implement in real-time monitoring.
The pipe flow interruption sensor, which adopts a cylindrical shell design, uses a magnetic component to generate a magnetic field that is linked with a rotating conductor mechanism. It detects flow interruption by using fluid kinetic energy, and combines a flow diversion mechanism to ensure that the fluid impacts the rotating conductor mechanism evenly, generating an electrical signal to determine whether the fluid flow is interrupted.
It enables real-time and continuous flow interruption monitoring, improves the accuracy and sensitivity of flow interruption judgment, is suitable for complex working conditions, avoids misjudgment caused by flow residue, and is especially suitable for viscous media or gas-liquid two-phase flow.
Smart Images
Figure CN223926631U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to pipeline sensing technical field, especially a pipeline flow break sensor. BACKGROUND
[0002] In the pipeline conveying system (such as petroleum, chemical industry, ceramic production line and water supply pipe network etc.), real-time monitoring fluid state (especially flow break condition) is important to guarantee production safety, prevent equipment damage and reduce resource waste.Flow break can be caused by pump valve failure, pipeline blockage, leakage or human operation error, if not timely detection, can lead to idling, overheating, pressure imbalance and other chain problems, even cause safety accidents.
[0003] Traditional flow break detection means mainly relies on flowmeter (or flow sensor), pressure sensor or artificial inspection.However, such as electromagnetic flowmeter still has certain flow after flow break, will produce certain feedback current by electromagnetic induction, makes flowmeter always unable to accurately judge whether pipeline is flow break or not, pressure sensor is easy to produce misjudgment because of signal delay or fluctuation, artificial inspection is low in efficiency and difficult to realize real-time monitoring.In addition, prior art has poor adaptability to low flow speed (or low flow), gas-liquid two-phase flow or viscous medium, and is difficult to accurately identify flow break critical state. UTILITY MODEL CONTENT
[0004] In view of the above-mentioned defects, the purpose of the utility model is to provide a pipeline flow break sensor, which solves the misjudgment problem caused by flow residue after fluid flow break.
[0005] To achieve this purpose, the utility model adopts the following technical scheme:
[0006] A pipeline flow break sensor, comprising a cylindrical shell, a flow dividing mechanism and a rotating conductor mechanism, a magnetic assembly is arranged in the shell of the cylindrical shell, the magnetic assembly is used for generating a magnetic field in the cylinder of the cylindrical shell, the rotating conductor mechanism is arranged in the cylinder of the cylindrical shell, and the flow dividing mechanism is arranged in front of the cylindrical shell.
[0007] The flow dividing mechanism is used for dividing and guiding fluid into the cylinder of the cylindrical shell, and uniformly impacting and pushing the rotating conductor mechanism.
[0008] Further, the rotating conductor mechanism is an axial flow fan blade assembly, the flow dividing mechanism is a conical structure with a conical top in front, a flow inflow interval is left between the conical bottom of the flow dividing mechanism and the inner wall of the cylindrical shell, and the flow inflow interval is opposite the blade end of the rotating conductor mechanism.
[0009] Further, the rotating conductor mechanism comprises a rotating shaft conductor and a plurality of blade conductors; the rotating shaft conductor is arranged in the center of the cylinder shell; the blade conductors are arranged along the rotating direction of the rotating shaft conductor; one end of the blade conductor is fixedly connected with the rotating shaft conductor.
[0010] Further, at least one support column is arranged on the front side and the rear side of the cylinder shell and extends towards the center of the cylinder shell; the end of the support column is fixedly connected with the rotating shaft conductor.
[0011] The first electric connection channel is arranged in the support column on the front side and the rear side of the cylinder shell; the first electric connection channel is used for the first conductive member to pass through and be electrically connected with the rotating shaft conductor.
[0012] Further, the rotating conductor mechanism comprises a rotating shaft conductor, a hub conductor and a plurality of blade conductors; the rotating shaft conductor is arranged in the center of the cylinder shell; the blade conductors are arranged around the outer periphery of the hub conductor; the hub conductor is rotatably connected with the rotating shaft conductor.
[0013] Further, at least one support column is arranged on the front side and the rear side of the cylinder shell and extends towards the center of the cylinder shell; the end of the support column is fixedly connected with the rotating shaft conductor.
[0014] The first electric connection channel is arranged in the support column on the front side and the rear side of the cylinder shell; the first electric connection channel is used for the first conductive member to pass through and be electrically connected with the rotating shaft conductor.
[0015] Further, the magnetic assembly comprises a plurality of electromagnets; the electromagnets are arranged around the inner side wall of the cylinder shell; the non-winding end of the electromagnet faces the center of the cylinder shell; the opposite sides of the oppositely arranged electromagnets are oppositely polarized.
[0016] Further, the second electric connection channel is arranged on the outer periphery of the cylinder shell and is connected to the outside; the second electric connection channel is used for the second conductive member to pass through and be electrically connected with the electromagnet.
[0017] Further, the magnetic assembly comprises a plurality of permanent magnets; the permanent magnets are arranged around the inner side wall of the cylinder shell; the opposite sides of the oppositely arranged permanent magnets are oppositely polarized.
[0018] Further, the outer periphery of the cylinder shell is provided with airtight fixing members or airtight fixing structures.
[0019] The technical scheme provided by the utility model can have the following beneficial effects:
[0020] (1) The flow cut-off sensor adopts a cylindrical shell design, which can be directly embedded into the pipeline for real-time and continuous flow cut-off monitoring without relying on pressure fluctuation or manual intervention.
[0021] (2) The magnetic field generated by the magnetic assembly in the cylindrical shell is linked with the rotating conductor mechanism. When the fluid continuously flows and impacts the rotating conductor mechanism, the rotating conductor mechanism can cut the magnetic induction lines of the magnetic field to generate an electric signal, so as to determine whether the fluid in the pipeline is cut off. Therefore, the fluid kinetic energy is used to determine whether the flow is cut off, which can avoid the misjudgment problem caused by the residual flow after the flow is cut off (the residual flow after the flow is cut off is blocked by the rotating conductor mechanism and cannot drive the rotating conductor mechanism to rotate), and improves the accuracy of flow cut-off determination.
[0022] (3) The shunt mechanism ensures that the fluid uniformly impacts and drives the rotating conductor mechanism, improves the detection sensitivity, and is especially suitable for complex working conditions such as viscous medium or gas-liquid two-phase flow. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 is a structural diagram of a pipeline flow cut-off sensor according to one embodiment of the present application Figure 1 .
[0024] Figure 2 is a rear view of a pipeline flow cut-off sensor according to one embodiment of the present application. Figure 1
[0025] Figure 3 is a right view and a front view of a pipeline flow cut-off sensor according to one embodiment of the present application. Figure 1
[0026] Figure 4 is a structural diagram of a pipeline flow cut-off sensor according to one embodiment of the present application Figure 1 . Figure 2
[0027] Wherein: the cylindrical shell 1, the shunt mechanism 2, the rotating conductor mechanism 3, the magnetic assembly 11, the inflow interval 4, the rotating shaft conductor 31, the blade conductor 32, the support column 12, the first electrical connection channel 121, and the second electrical connection channel 111. DETAILED DESCRIPTION
[0028] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0029] 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.
[0030] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0031] 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.
[0032] The following is combined with Figures 1 to 4 This describes a pipeline flow interruption sensor according to an embodiment of the present invention.
[0033] A pipe flow interruption sensor includes a cylindrical shell 1, a flow diversion mechanism 2, and a rotating conductor mechanism 3; a magnetic component 11 is provided inside the cylindrical shell 1, which is used to generate a magnetic field inside the cylindrical shell 1.
[0034] The rotating conductor mechanism 3 is mounted inside the cylindrical shell 1, and the diversion mechanism 2 is located in front of the cylindrical shell 1. The diversion mechanism 2 is used to divert the fluid into the cylindrical shell 1 and uniformly impact and drive the rotating conductor mechanism 3.
[0035] This utility model proposes a preferred embodiment of a pipeline flow interruption sensor, such as... Figures 1 to 3As shown. First, the flow cut-off sensor adopts a cylindrical shell 1 design to facilitate direct embedding integration into the pipeline, realizing real-time and continuous flow cut-off monitoring without relying on pressure fluctuations or manual intervention. Second, through the linkage design of the magnetic field generated by the magnetic component 11 in the cylindrical shell 1 and the rotating conductor mechanism 3, when the fluid continuously flows and continuously impacts and pushes the rotating conductor mechanism 3, it can make the rotating conductor mechanism 3 cut the magnetic induction lines of the magnetic field, generating an electric signal, by which it can be judged whether the fluid in the pipeline is cut off; therefore, using fluid kinetic energy to judge whether the flow is cut off can avoid the problem of misjudgment caused by residual flow after the flow is cut off (residual flow after the flow is cut off is blocked by the rotating conductor mechanism 3 and cannot push the rotating conductor mechanism 3 to rotate), improving the accuracy of flow cut-off judgment. More importantly, through the shunt mechanism 2, it ensures that the fluid uniformly impacts and pushes the rotating conductor mechanism 3, improves the detection sensitivity, and is especially suitable for complex working conditions such as viscous medium or gas-liquid two-phase flow; for example, the shunt mechanism 2 can be composed of a structure in which a front main pipe is divided into multiple rear branch pipes, so that the main fluid is dispersed into multiple branch fluids and uniformly guided to the rotating conductor mechanism 3, so that the rotating conductor mechanism 3 rotates under uniform impact.
[0036] Further, the rotating conductor mechanism 3 is an axial fan blade assembly, the shunt mechanism 2 is a conical structure with the cone top in front, and the shunt mechanism 2 has a flow-in interval 4 between the conical bottom and the inner wall of the cylindrical shell 1, and the flow-in interval 4 is opposite the blade end of the rotating conductor mechanism 3.
[0037] In this embodiment, in order to realize that the shunt mechanism 2 can shunt the fluid into the cylinder of the cylindrical shell 1 and uniformly impact and push the rotating conductor mechanism 3, the structure is simple; preferably, the rotating conductor mechanism 3 is an axial fan blade assembly, the shunt mechanism 2 is a conical structure with the cone top in front, and the shunt mechanism 2 has a flow-in interval 4 between the conical bottom and the inner wall of the cylindrical shell 1, and the flow-in interval 4 is opposite the blade end of the rotating conductor mechanism 3, so that the fluid can be shunted to the flow-in interval 4 through the cone top of the cone to impact the blade end, thereby maximizing the driving force of the fluid on the rotating conductor mechanism 3 and enhancing the response capability at low flow rate (or low flow rate). More importantly, the cooperation of the axial fan blade assembly and the conical structure optimizes the fluid path, reduces turbulence interference, and improves signal stability.
[0038] Further, as shown in Figure 4 The rotating conductor mechanism 3 has the following two implementation ways to realize rotation under the impact of fluid:
[0039] Embodiment 1
[0040] The rotating conductor mechanism 3 includes a rotating shaft conductor 31 and a plurality of blade conductors 32; the rotating shaft conductor 31 is rotatably arranged in the central part of the cylinder of the cylindrical shell 1, the plurality of blade conductors 32 are arranged in the rotating direction of the rotating shaft conductor 31, and one end of the blade conductor 32 is fixedly connected with the rotating shaft conductor 31.
[0041] In this embodiment, the blade conductor 32 is fixedly connected with the rotating shaft conductor 31 to form an integral rotating structure, so that the electric signal generated after the blade conductor 32 cuts the magnetic induction lines can be continuously conducted to the rotating shaft conductor 31, and then to the detection device, thereby ensuring the continuity of the electric signal.
[0042] The front side and the rear side of the cylindrical shell 1 each extend towards the cylinder center and are provided with at least one support column 12; the end of the support column 12 is fixedly connected with the rotating shaft conductor 31.
[0043] The front side and the rear side of the cylindrical shell 1 each have a first electrically conductive channel 121 passing through the support column 12, and the first electrically conductive channel 121 is used for the first electrically conductive member to pass through and electrically connect with the rotating shaft conductor 31.
[0044] In this embodiment, the rotating conductor mechanism 3 is connected with the rotating shaft conductor 31 through the end of the support column 12, so that the rotating shaft conductor 31 is rotatably arranged in the cylinder of the cylindrical shell 1. For this purpose, the front side and the rear side of the cylindrical shell 1 each have a first electrically conductive channel 121 passing through the support column 12, and the first electrically conductive channel 121 is used for the first electrically conductive member to pass through and electrically connect with the rotating shaft conductor 31, so that the electric signal is transmitted to the detection device through the first electrically conductive member (such as a wire, a copper sheet, etc.). The detection device can be arranged outside the pipeline, and the pipeline is provided with a through hole corresponding to the first electrically conductive channel 121, so that the first electrically conductive member can pass through and electrically connect with the detection device.
[0045] Embodiment 2
[0046] The rotating conductor mechanism 3 includes a rotating shaft conductor 31, a hub conductor, and a plurality of blade conductors 32. The rotating shaft conductor 31 is fixedly arranged in the center of the cylinder of the cylindrical shell 1, the plurality of blade conductors 32 are arranged around the outer periphery of the hub conductor, and the hub conductor is rotatably connected with the rotating shaft conductor 31.
[0047] In this embodiment, the hub conductor is designed separately from the rotating shaft conductor 31, which has higher rotating freedom, so that the blade conductors 32 are more easily driven by low-flow-rate (or low-flow-volume) fluid, and the response speed is improved. At the same time, the modular structure facilitates the maintenance or replacement of the blade conductors 32, and meets the needs of different media (such as corrosive fluid).
[0048] The front side and the rear side of the cylindrical shell 1 each extend towards the cylinder center and are provided with at least one support column 12; the end of the support column 12 is fixedly connected with the rotating shaft conductor 31.
[0049] The front side and the rear side of the cylindrical shell 1 each have a first electrically conductive channel 121 passing through the support column 12, and the first electrically conductive channel 121 is used for the first electrically conductive member to pass through and electrically connect with the rotating shaft conductor 31.
[0050] In this embodiment, the rotating conductor mechanism 3 is fixedly connected to the end of the support column 12 and the rotating shaft conductor 31, thereby fixing the rotating shaft conductor 31 inside the cylindrical shell 1; while the electrical signal conduction method is the same in both embodiments.
[0051] It should be noted that multiple blade conductors 32 can be arranged on the same horizontal plane, or multiple blade conductors 32 can be arranged in a spiral arrangement from front to back along the rotation axis conductor 31.
[0052] Furthermore, the magnetic component 11 generates a magnetic field inside the cylindrical outer shell 1, and the following implementation methods are available:
[0053] Example 1
[0054] The magnetic component 11 includes a plurality of electromagnets, which are arranged around the inner wall of the cylindrical shell 1. The non-wound ends of the electromagnets face the center of the cylindrical shell 1, and the polarities of the opposite sides of the electromagnets are set to be opposite.
[0055] In this embodiment, the magnetic component 11 uses a design of paired electromagnets with opposite polarities to generate as many magnetic field lines as possible across the internal space of the cylindrical shell 1, making the magnetic field lines as perpendicular to the fluid as possible, so as to facilitate the rapid generation of electrical signals through positive cutting. More importantly, the magnetic field of the electromagnets is generated by the power supply excitation, and the magnetic field generation is controllable and the magnetic field strength is adjustable, which can greatly improve the controllability of the flow interruption sensor, so as to expand more control methods.
[0056] The cylindrical outer shell 1 has a second electrical connection channel 111 on its outer periphery that leads to the outside. The second electrical connection channel 111 is used for the second conductive element to pass through and make an electrical connection with the electromagnet.
[0057] In this embodiment, if the magnetic component 11 is made of an electromagnet, it 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 a second electrical connection channel 111 leading to the outside, which is used for the second conductive element to pass through and electrically connect with the electromagnet (that is, the second conductive element electrically connects the electromagnet and the controller).
[0058] Example 2
[0059] The magnetic component 11 includes a plurality of permanent magnets arranged around the inner wall of the cylindrical outer shell 1, and the polarities of the opposite sides of the permanent magnets are set to be opposite.
[0060] In this embodiment, when the magnetic component 11 is made of a permanent magnet, the setting method is the same as that of an electromagnet, but it is more suitable for environments without external power supply.
[0061] Furthermore, the outer periphery of the cylindrical shell 1 is provided with a sealing fastener or a sealing fastener structure.
[0062] 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.
[0063] Other components and operations of the pipeline flow interruption sensor according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.
[0064] 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.
[0065] 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 pipeline flow interruption sensor, characterized in that: It includes a cylindrical outer shell, a current-diverting mechanism, and a rotating conductor mechanism; a magnetic component is provided inside the cylindrical outer shell, which is used to generate a magnetic field inside the cylindrical outer shell; The rotating conductor mechanism is mounted inside the cylindrical shell, and the diversion mechanism is located in front of the cylindrical shell; the diversion mechanism is used to divert fluid into the cylindrical shell and uniformly impact and drive the rotating conductor mechanism.
2. A pipeline flow interruption sensor according to claim 1, characterized in that: The rotating conductor mechanism is an axial flow fan blade assembly, and the diversion mechanism is a cone structure with the cone apex facing forward. There is an inflow gap between the cone bottom of the diversion mechanism and the inner wall of the cylindrical shell, and the inflow gap is directly opposite the end of the fan blade of the rotating conductor mechanism.
3. A pipeline flow interruption sensor according to claim 2, characterized in that: The rotating conductor mechanism includes a rotating shaft conductor and multiple blade conductors; the rotating shaft conductor is rotatably mounted in the center of the cylindrical shell, and the multiple blade conductors are spaced apart along the rotation direction of the rotating shaft conductor, with one end of each blade conductor fixedly connected to the rotating shaft conductor.
4. A pipeline flow interruption sensor according to claim 3, characterized in that: At least one support column is provided on both the front and rear sides of the cylindrical outer shell, extending toward the center of the cylinder; the end of the support column is connected to the rotating shaft conductor shaft. The cylindrical outer shell has a support column on each of its front and rear sides, through which a first electrical connection channel is formed. The first electrical connection channel is used for the first conductive component to pass through and electrically connect with the rotating shaft conductor.
5. A pipeline flow interruption sensor according to claim 2, characterized in that: The rotating conductor mechanism includes a rotating shaft conductor, a hub conductor, and multiple blade conductors; the rotating shaft conductor is fixedly mounted in the center of the cylindrical shell, and the multiple blade conductors are arranged around the outer circumference of the hub conductor, and the hub conductor and the rotating shaft conductor are rotatably connected.
6. A pipeline flow interruption sensor according to claim 5, characterized in that: At least one support column is provided on both the front and rear sides of the cylindrical outer shell, extending toward the center of the cylinder; the end of the support column is fixedly connected to the rotating shaft conductor; The cylindrical outer shell has a support column on each of its front and rear sides, through which a first electrical connection channel is formed. The first electrical connection channel is used for the first conductive component to pass through and electrically connect with the rotating shaft conductor.
7. A pipeline flow interruption sensor according to claim 1, characterized in that: The magnetic component includes a plurality of electromagnets arranged around the inner wall of the cylindrical shell, with the non-wound ends of the electromagnets facing the center of the cylindrical shell, and the opposite sides of the electromagnets arranged oppositely having opposite polarities.
8. A pipeline flow interruption sensor according to claim 7, characterized in that: The cylindrical outer shell has a second electrical connection channel on its outer periphery leading to the outside. The second electrical connection channel is used for the passage of the second conductive component to make an electrical connection with the electromagnet.
9. A pipeline flow interruption sensor according to claim 1, characterized in that: The magnetic component includes a plurality of permanent magnets arranged around the inner wall of the cylindrical shell, and the polarities of the opposite sides of the oppositely arranged permanent magnets are set to be opposite.
10. A pipeline flow interruption sensor according to claim 1, characterized in that: The outer periphery of the cylindrical shell is provided with a sealing fastener or a sealing fastener structure.