A grounding ring and an electromagnetic flowmeter
By combining the design of the insulation component and the first conductor component, the high cost caused by the precious metal material of the grounding ring is solved, achieving the effect of cost reduction and improved measurement accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING NOVEL ENVIRONMENTAL PROTECTION
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-03
Smart Images
Figure CN224458629U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of industrial measurement technology, specifically relating to a grounding ring and an electromagnetic flowmeter. Background Technology
[0002] In the field of water treatment, non-metallic pipelines are widely used for transporting media such as acid and alkali solutions and sewage due to their corrosion resistance. However, when used with electromagnetic flowmeters, because non-metallic pipelines are not conductive, a grounding ring is needed to connect the fluid potential to the ground in order to eliminate electrostatic interference and ensure measurement accuracy.
[0003] In existing technologies, grounding rings typically need to be in direct contact with the fluid medium to establish a conductive path. They are generally made of precious metals such as platinum and tantalum, utilizing the high corrosion resistance and conductivity of these metals to meet the requirements for long-term stable operation. However, the scarcity of precious metal resources and the high processing costs result in the high manufacturing cost of grounding rings. Utility Model Content
[0004] The purpose of this application is to provide a grounding ring and an electromagnetic flowmeter to solve the problem that the grounding ring in the related technology is made of precious metal material, resulting in high manufacturing and maintenance costs.
[0005] To solve the above-mentioned technical problems, this application is implemented as follows:
[0006] In a first aspect, this application discloses a grounding ring, characterized in that the grounding ring comprises: an insulating component and a first conductor component; the insulating component has a ring structure; and the first conductor component is connected to the annular inner wall of the insulating component;
[0007] The first conductor assembly is in contact with the fluid medium on the side of the annular structure away from the insulating assembly; the first conductor assembly is used to connect the external grounding line and the fluid medium.
[0008] Optionally, the grounding ring further includes: a second conductor assembly;
[0009] One end of the second conductor assembly is connected to the first conductor assembly, and the other end extends radially away from the first conductor assembly along the annular structure and is connected to the external grounding line.
[0010] Optionally, the first conductor assembly is embedded in the annular inner wall of the insulating assembly, and the first conductor assembly is in contact with the fluid medium on the side of the annular structure closer to the central axis of the annular structure along the radial direction of the annular structure.
[0011] Optionally, the first conductor assembly comprises at least two first conductor elements, with adjacent first conductor elements spaced apart, and each of the at least two first conductor elements is respectively connected to the annular inner wall and the second conductor assembly.
[0012] Optionally, the second conductor assembly includes a second conductor element and an external electrode tab;
[0013] One end of the second conductor is connected to the first conductor assembly, and the other end is connected to one end of the external electrode tab;
[0014] The other end of the external electrode is connected to the external grounding line.
[0015] Optionally, the first conductor component is made of a first material; the second conductor component is made of a second material.
[0016] Optionally, the insulating component includes a sealing layer and a fixing layer;
[0017] The sealing layer has an annular structure, and the annular inner wall of the sealing layer is connected to the first conductor assembly;
[0018] The fixing layer is connected to the sealing layer and is used for positioning and fixing with the flange.
[0019] Optionally, the fixing layer and the sealing layer are coaxially arranged in an annular structure, and the annular inner wall of the fixing layer is connected to the annular outer surface of the sealing layer; the fixing layer has at least two through holes along the axial direction of the fixing layer on the side radially away from the sealing layer; the through holes are opposite to the position of the flange positioning pin and are used for positioning and fixing with the flange;
[0020] Alternatively, the fixing layer may be a fixing groove extending radially along the sealing layer, with at least two fixing grooves, which are used for positioning and fixing with the flange.
[0021] Optionally, the thickness of the sealing layer along the radial direction of the annular structure is 6mm-12mm.
[0022] Secondly, this application discloses an electromagnetic flowmeter, which includes the grounding ring described in any of the above claims.
[0023] In this embodiment, the grounding ring consists of a first conductor assembly and an insulating assembly. The first conductor assembly ensures the core requirement of conductivity while reducing the amount of precious metals used, while the insulating assembly provides structural support and insulation. Compared to related technologies where the entire grounding ring is made of precious metals, this solution significantly reduces the costs of material procurement, manufacturing, and subsequent maintenance while ensuring performance. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of one embodiment of a grounding ring in this application;
[0025] Figure 2 This is a schematic diagram of another embodiment of a grounding ring in the present application;
[0026] Figure 3 This is a schematic diagram of a grounding ring connected to a flange on a non-metallic pipe in an embodiment of this application.
[0027] Figure 4 This is a schematic diagram of the first conductor being plated with an anti-corrosion material in an embodiment of this application.
[0028] Explanation of reference numerals in the attached figures:
[0029] Insulating component-100; Sealing layer-110; Fixing layer-120; First conductor assembly-200; First conductor element-210; Second conductor assembly-300; Second conductor element-310; External electrode lug-320; Flange-400; Grounding ring-500; Electromagnetic flowmeter-600; First surface-2101; Side wall-2102; Plating-700; Through hole-121. Detailed Implementation
[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0031] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0032] The following description, in conjunction with the accompanying drawings, details a grounding ring provided in this application through specific embodiments and application scenarios.
[0033] like Figure 1 and Figure 2As shown, this application provides a grounding ring, which includes: an insulating component 100 and a first conductor component 200; the insulating component 100 has a ring structure; the first conductor component 200 is connected to the inner wall of the ring of the insulating component 100; the first conductor component 200 is in contact with a fluid medium on the side of the ring structure that is radially away from the insulating component 100; the first conductor component 200 is used to connect an external grounding line and a fluid medium.
[0034] Specifically, the grounding ring 500 in this embodiment can be used in conjunction with the electromagnetic flowmeter 600 and can be used on non-metallic pipes. In use, as follows... Figure 3 As shown, the grounding ring 500 is assembled between two flanges 400 to achieve electrical connection between the fluid medium and the external grounding line, ensuring the normal operation and safety of the electromagnetic flowmeter 600. The grounding ring 500 in this application includes an insulating component 100 and a first conductor component 200. The insulating component 100 has a ring structure, and the first conductor component 200 is connected to the inner annular wall of the insulating component 100. The main body of the grounding ring 500 is made of the insulating component 100, which provides sufficient support for the first conductor component 200 to meet the mechanical support requirements of the grounding ring 500. The first conductor component 200 and the insulating component 100 can be connected by adhesive bonding, injection molding, or welding; this application does not limit the specific connection method. The material of the insulating component 100 can be polytetrafluoroethylene (PTFE), polyurethane rubber, natural rubber, polychloroprene (chloroprene rubber), etc.; this application does not limit the material used. The material of the first conductor component 200 may be graphene, Hastelloy C, Monel alloy, tantalum (Ta), nickel (Ni), titanium (Ti), platinum-iridium alloy (Pt-Ir), tungsten carbide (WC), etc., and the embodiments of this application do not limit it.
[0035] The first conductor assembly 200 is located on the side of the annular structure that is radially away from the insulating assembly 100 and is in the same direction as the inner wall of the non-metallic pipe, directly contacting the fluid medium to connect the fluid medium to the external grounding line, thereby ensuring the normal operation and safety of the electromagnetic flowmeter 600.
[0036] Understandably, the grounding ring 500 achieves an optimized balance between grounding function and cost control through the combined design of the insulating component 100 and the first conductor component 200. The insulating component 100 adopts a ring structure to provide mechanical support and insulation isolation for the first conductor component 200. The first conductor component 200 only needs to be set in the key parts (in contact with the fluid and the conductive path) to directly contact the fluid medium and connect to the external grounding line, quickly discharge the fluid charge to eliminate the interference of potential difference on the measuring equipment and improve the measurement accuracy of the electromagnetic flowmeter 600. At the same time, this design greatly reduces the amount of conductive materials such as precious metals, which significantly reduces the overall manufacturing cost.
[0037] Optional, such as Figure 1 and Figure 2 As shown, the grounding ring 500 also includes: a second conductor assembly 300; one end of the second conductor assembly 300 is connected to the first conductor assembly 200, and the other end extends radially away from the first conductor assembly 200 along the ring structure and is connected to an external grounding line.
[0038] Specifically, the grounding ring 500 also includes a second conductor assembly 300. One end of the second conductor assembly 300 is electrically connected to the first conductor assembly 200, and the other end extends radially away from the first conductor assembly 200 along the annular structure and is connected to an external grounding line to realize the connection between the first conductor assembly 200 and the external grounding line. Fluid charge is conducted to the external grounding line through the first conductor assembly 200 and the second conductor assembly 300, eliminating the potential difference between the fluid medium and the electromagnetic flowmeter 600.
[0039] Understandably, the grounding ring 500 of this application forms a complete conductive path from the fluid medium to the external grounding line by adding a second conductor assembly 300, which significantly improves grounding efficiency and reliability. One end of the second conductor assembly 300 is connected to the first conductor assembly 200, which is in direct contact with the fluid, and the other end extends radially outward to a position that facilitates wiring. This layout not only shortens the charge conduction path and reduces contact resistance, but also separates the conductive function from the mechanical support function through a physical separation design. The first conductor assembly 200 is used for fluid contact and charge collection, while the second conductor assembly 300 is used for external line connection. Different materials can be flexibly selected according to requirements (such as using corrosion-resistant precious metals for the first conductor assembly 200 and low-cost industrial metals for the second conductor assembly 300), further reducing material costs while ensuring conductivity.
[0040] Optionally, such as Figure 1 and Figure 2 As shown, the first conductor assembly 200 is embedded in the annular inner wall of the insulating assembly 100, and the first conductor assembly 200 is in contact with the fluid medium on the side of the annular structure closer to the central axis of the annular structure along the radial direction of the annular structure.
[0041] Specifically, the first conductor assembly 200 is embedded in the annular inner wall of the insulating assembly 100 to ensure a stable and sealed connection between the first conductor assembly 200 and the insulating assembly 100, forming a tight and gapless integrated structure. The first conductor assembly 200 is in full contact with the fluid medium on the radial side of the annular structure of the insulating assembly 100, closer to the central axis of the annular structure, to ensure that the first conductor assembly 200 can conduct charges from the fluid medium.
[0042] In some embodiments, the annular inner wall of the insulating component 100 has a groove adapted to the first conductor component 200, and the first conductor component 200 is embedded in the groove to achieve assembly of the first conductor component 200 and the insulating component 100. In other embodiments, an injection mold is pre-set during the fabrication of the grounding ring 500. After the first conductor component 200 and the second conductor component 300 are assembled, liquid raw material of the insulating component 100 is injected into the mold through the injection mold, so that the insulating component 100, the first conductor component 200, and the second conductor component 300 are injection molded into an integral structure.
[0043] Understandably, the design of the first conductor assembly 200 being embedded in the annular inner wall of the insulating assembly 100 and contacting the fluid radially towards the central axis creates a rigid integral structure between the first conductor assembly and the insulating assembly 100. The annular support force of the insulating assembly 100 counteracts the fluid's impact force, avoiding the deformation or detachment risks associated with traditional external conductors due to cantilever stress. This design is particularly suitable for high-velocity fluids or fluids containing solid particles. Simultaneously, the encapsulation structure of the insulating assembly 100 isolates unnecessary conductive areas, exposing only the critical surfaces in contact with the fluid. Through the physical barrier effect of the insulating material, corrosion of the back of the conductor assembly and connection points by the fluid is prevented, thus extending the service life of the grounding ring 500. This structural design also reduces fluid flow resistance; the conductor assembly, embedded in the inner wall, is flush with the inner surface of the pipe, improving the conveying efficiency of the pipeline system.
[0044] Optional, such as Figure 1 and Figure 2 As shown, the first conductor assembly 200 consists of at least two first conductor elements 210, with adjacent first conductor elements 210 spaced apart, and each of the at least two first conductor elements 210 is connected to the annular inner wall and the second conductor assembly 300 respectively.
[0045] Specifically, the first conductor assembly 200 comprises at least two first conductor elements 210, with adjacent first conductor elements 210 spaced apart on the annular inner wall of the insulating assembly 100, and both connected to the second conductor assembly 300 to achieve ground circuit conduction between the fluid medium and the external grounding line. The shape of the first conductor assembly 200 can be a cube, cylinder, etc., and the embodiments of this application do not limit its specific shape.
[0046] In some embodiments, the first conductor 210 is a cubic structure made of a corrosion-resistant and conductive material, such as graphene, Hastelloy C, Monel Alloy, tantalum (Ta), nickel (Ni), titanium (Ti), platinum-iridium alloy (Pt-Ir), tungsten carbide (WC), etc., and the embodiments of this application do not limit the choice of material. Multiple cubic structures are spaced apart circumferentially along the annular inner wall of the insulating assembly 100, encircling and embedded therein, and their first surface 2101, located radially towards the central axis of the annular structure of the insulating assembly 100, is in full contact with the fluid medium. Each first conductor 210 is connected to the second conductor assembly 300.
[0047] In other embodiments, as shown in Figure 4, the first conductor 210 of the cubic structure is made of low-cost conductor materials such as carbon steel, copper, and stainless steel. Only the first surface 2101 on the side in contact with the fluid medium is coated with a layer 700. This coating 700 is a corrosion-resistant conductive material, such as Hastelloy C, Monel Alloy, tantalum (Ta), nickel (Ni), titanium (Ti), platinum-iridium alloy (Pt-Ir), tungsten carbide (WC), etc., to ensure that the first conductor 210 has both strong corrosion resistance and conductivity on the fluid-contact side. In other embodiments, such as... Figure 4 As shown, in order to prevent fluid medium from immersing in the sidewall 2102 of the first conductor 210 in contact with the insulating component 100 and causing corrosion of the first conductor 210, a corrosion-resistant conductive material of a predetermined area is also plated on the sidewall 2102 of the first conductor 210 to ensure the reliability and safety of the first conductor 210.
[0048] In other embodiments, the first conductor assembly 200 may be a ring structure coaxial with the insulating assembly 100, the outer wall of the ring structure being connected to the inner annular wall of the insulating assembly 100 along the radial direction, and the inner annular wall of the first conductor assembly 200 being in contact with the fluid medium.
[0049] Understandably, the design of the first conductor assembly 200 employing at least two spaced-apart first conductor elements 210, connected to the annular inner wall and the second conductor assembly 300 respectively, reduces the manufacturing cost of the first conductor assembly 200 by reducing the amount of conductive material used, compared to setting the first conductor assembly 200 as an integral annular structure surrounding the inner wall of the insulating assembly 100. Furthermore, the spaced-apart structure reduces fluid flow resistance, avoids eddy current losses caused by excessively large cross-sectional areas of a single conductor element, and allows solid particles or air bubbles to pass through through the gaps between conductor elements, improving compatibility with fluids containing impurities. In addition, the multi-conductor design forms redundant conductive paths; when individual conductor elements are damaged by corrosion or external forces, the remaining conductor elements can still maintain grounding functionality. The modular structure also facilitates independent replacement and maintenance of individual conductor elements, reducing subsequent operation and maintenance costs.
[0050] Optional, such as Figure 1 and Figure 2 As shown, the second conductor assembly 300 includes a second conductor 310 and an external electrode 320; one end of the second conductor 310 is connected to the first conductor assembly 200, and the other end is connected to one end of the external electrode 320; the other end of the external electrode 320 is connected to an external grounding line.
[0051] Specifically, the second conductor assembly 300 includes a second conductor 310 and an external electrode 320. One end of the second conductor 310 is connected to the first conductor assembly, and the other end is connected to one end of the external electrode 320. The other end of the external electrode 320 is connected to an external grounding line to transport fluid charge from the first conductor assembly 200, the second conductor 310, and the external electrode 320 to the external grounding line. In some embodiments, when the first conductor assembly 200 consists of at least two first conductors 210, the number of second conductors 310 is the same as the number of first conductors 210. Each first conductor 210 is connected to one second conductor 310, and multiple second conductors 310 are connected to the external electrode 320 to transport the fluid charge collected by the multiple first conductors 210 to the external electrode 320 via the multiple second conductors 310. In some embodiments, when the grounding ring 500 is manufactured, an injection mold is pre-set. After the first conductor 210 and the second conductor 310 are assembled, the liquid raw material of the insulating component 100 is injected into the mold through the injection mold, so that the insulating component 100, the first conductor 210 and the second conductor 310 are injection molded into an integral structure, and the second conductor 310 is connected to the external electrode 320.
[0052] Understandably, the second conductor assembly 300 employs a combination design of a second conductor element 310 and an external electrode 320. One end of the second conductor element 310 connects to the first conductor assembly 200, and the other end connects to the external electrode 320. This efficiently conducts the fluid charge collected by the first conductor assembly 200 to the external electrode 320, which then stably connects to the external grounding line. This ensures a smooth charge discharge path, effectively reduces grounding resistance, improves the reliability and stability of the grounding system, and guarantees the accuracy of measurements from devices such as the electromagnetic flowmeter 600. Simultaneously, this design makes the structure of the grounding ring 500 more flexible and modular. The second conductor element 310 can be rationally designed according to the actual installation space and the layout of the first conductor assembly 200, facilitating a tight connection with it. The external electrode 320 provides a convenient interface for connection to the external grounding line, facilitating on-site installation and subsequent maintenance, and ensuring reliable grounding even in complex piping systems. Furthermore, different components can be made from appropriate materials according to their functional requirements. The second conductor 310 can be made of a material that meets conductivity requirements and has a relatively low cost, while the external tab 320 can be made of a material with good connection performance and corrosion resistance according to actual needs. While ensuring performance, this avoids the need to use a single expensive material to make the entire second conductor assembly 300, effectively reducing costs.
[0053] Optionally, the first conductor assembly 200 is made of a first material; the second conductor assembly 300 is made of a second material.
[0054] Specifically, the first conductor component 200 is made of a first material, which is a material with good conductivity and corrosion resistance, such as graphene, Hastelloy C, Monel Alloy, tantalum (Ta), nickel (Ni), titanium (Ti), platinum-iridium alloy (Pt-Ir), tungsten carbide (WC), etc. The embodiments of this application do not limit the specific material.
[0055] The second conductor component 300 is made of a second material, which has good conductivity and a lower price per unit weight than the first material. Materials such as carbon steel, copper, and stainless steel are used. This application does not limit the specific material used.
[0056] Understandably, the first conductor assembly 200 and the second conductor assembly 300 are designed with different materials. The first material is a highly conductive and corrosion-resistant precious metal or special alloy (such as Hastelloy C or platinum-iridium alloy) to ensure that key parts in direct contact with the fluid medium have strong corrosion resistance and a stable conductive path, meeting the requirements for long-term reliable operation in harsh environments. The second material uses lower-cost industrial metals (such as carbon steel or copper) to complete the grounding line connection function using their good conductivity, avoiding the increased cost caused by using precious metals throughout the structure. This optimizes economy while ensuring the core function of the grounding ring 500.
[0057] Optional, such as Figure 1 and Figure 2 As shown, the insulating assembly 100 includes a sealing layer 110 and a fixing layer 120; the sealing layer 110 has an annular structure, and the annular inner wall of the sealing layer 110 is connected to the first conductor assembly 200; the fixing layer 120 is connected to the sealing layer 110 and is used for positioning and fixing with the flange 400.
[0058] Specifically, the insulating component 100 includes a sealing layer 110 and a fixing layer 120. The sealing layer 110 has an annular structure, and its inner annular wall is connected to the first conductor component 200. The sealing layer 110 provides support for the first conductor component 200, ensuring the installation strength of the grounding ring 500 within the pipeline. The outer side of the sealing layer 110 mates with the fixing layer 120, achieving axial sealing of the pipeline through a flange 400 or a sealing ring, ensuring no fluid leakage at the entire installation location of the grounding ring 500. The sealing layer 110 is made of an insulating material with a certain supporting strength, such as polytetrafluoroethylene (PTFE), polyurethane rubber, natural rubber, polychloroprene (chloroprene rubber), etc. This application embodiment does not limit the specific material used.
[0059] The fixing layer 120 is connected to the sealing layer 110 and is used to position and fix the grounding ring 500 and the flange 400. The fixing layer 120 can be made of the same material as the sealing layer 110 or a different material. This application embodiment does not limit it.
[0060] In some embodiments, the sealing layer 110 and the fixing layer 120 are made of the same material and are manufactured using a one-piece injection molding process. In other embodiments, the sealing layer 110 and the fixing layer 120 are made of different materials; for example, the sealing layer 110 is made of polytetrafluoroethylene by injection molding, and the fixing layer 120 is made of stainless steel by casting. During manufacturing, the sealing layer 110 and the fixing layer 120 are first fabricated separately, and then they are fixedly connected using adhesives or bolts.
[0061] Understandably, the insulation component 100 adopts a separate design of sealing layer 110 and fixing layer 120. The sealing layer 110, as an annular body, has its inner wall tightly connected to the first conductor component 200. Through the elastic deformation of the insulating material and the structural sealing performance, it effectively prevents fluid medium from leaking from the connection of the conductor component, while isolating the conductor component from external metal parts, avoiding stray current interference, and improving electrical safety. The fixing layer 120 works in conjunction with the sealing layer 110 to achieve rapid assembly with the pipe flange 400, ensuring that the grounding ring 500 is installed coaxially with the pipe axis, reducing measurement errors caused by installation deviations. Furthermore, the fixing layer 120 can be made of high-strength engineering materials to separately enhance its mechanical support capacity, complementing the corrosion resistance of the sealing layer 110. While ensuring the overall structural strength, the cost is reduced through material selection design.
[0062] Optionally, such as Figure 1 and Figure 2 As shown, the fixing layer 120 and the sealing layer 110 are coaxially arranged in an annular structure, and the annular inner wall of the fixing layer 120 is connected to the annular outer surface of the sealing layer 110. The fixing layer 120 has at least two through holes 121 along the axial direction of the fixing layer 120 on the side that is radially away from the sealing layer 110. The through holes 121 are opposite to the position of the positioning pin of the flange 400 and are used for positioning and fixing with the flange 400. Alternatively, the fixing layer 120 is a fixing groove that extends radially along the sealing layer 110, and there are at least two fixing grooves. The fixing grooves are used for positioning and fixing with the flange 400.
[0063] Specifically, in some embodiments, the fixing layer 120 is an annular structure coaxial with the sealing layer 110. The annular inner wall of the fixing layer 120 is connected to the annular outer surface of the sealing layer 110. At least two through holes 121 are formed on the side of the fixing layer 120 radially away from the sealing layer 110, along the axial direction of the fixing layer 120. These through holes 121 are positioned opposite to the locating pins of the flange 400. In use, the locating pins of the flange 400 are inserted into the through holes 121 to achieve positioning and fixing of the grounding ring 500 and the flange 400 through the through holes and the locating pins of the flange 400. In some embodiments, there are two through holes 121, symmetrically arranged along the central axis of the sealing layer 110. In other embodiments, there are several through holes 121, arranged around the annular outer surface of the fixing layer 120. In some embodiments, the number of through holes 121, first conductors 210, and second conductors 310 is the same. Each second conductor 310 is connected to one first conductor 210. The positions of the through holes 121 and the second conductors 310 in the radial direction of the insulating assembly 100 correspond one-to-one. This ensures that when the grounding ring is fixed to the flange 400 through the through holes 121, each first conductor 210 and second conductor 310 is opposite to one through hole 121. This significantly improves the accuracy of positioning and fixing of the grounding ring 500 and the flange 400, ensuring accurate positioning of components during installation and avoiding problems such as poor contact and sealing failure caused by misalignment. This enhances the overall stability and reliability of the grounding ring after installation. In some embodiments, the fixing layer 120 is a fixing groove extending radially along the sealing layer 110. There are at least two fixing grooves, and the fixing grooves are opposite to the positioning pins of the flange 400. In use, the positioning pins of the flange 400 are inserted into the fixing grooves to position and fix the grounding ring 500 and the flange 400.
[0064] Understandably, the coaxial arrangement of the fixing layer 120 and the sealing layer 110, with their annular inner walls connected, ensures the symmetry and stability of the overall structure of the grounding ring 500. This allows for precise positioning of the grounding ring 500 during pipeline installation, preventing fluid leakage or electrical instability caused by installation deviations. Both different designs of the fixing layer 120 significantly improve the convenience and reliability of the connection between the grounding ring 500 and the flange 400. At least two axial through holes on the side of the fixing layer 120 radially away from the sealing layer 110, corresponding to the locating pins of the flange 400, enable quick and accurate positioning and fixing of the grounding ring 500 and the flange 400. This simplifies the installation process, improves installation efficiency, and ensures a strong connection, effectively resisting the impact and vibration generated by fluid flow, ensuring that the grounding ring 500 will not shift during long-term use. The fixing layer 120 is designed with at least two fixing grooves extending radially along the sealing layer 110, which can also achieve positioning and fixing with the flange 400. This design increases the diversity of fixing methods, can better adapt to different types and specifications of flanges 400, improves the versatility and adaptability of the grounding ring 500, and enables the grounding ring 500 to be widely used in a variety of piping systems.
[0065] Optionally, the thickness of the sealing layer 110 in the radial direction of the annular structure is 6 mm - 12 mm.
[0066] Specifically, the thickness of the sealing layer 110 along the radial direction of the annular structure is 6mm-12mm. In some embodiments, the thickness of the sealing layer 110 along the radial direction of the annular structure is 12mm, and the thickness of the first conductor 210 along the radial direction of the annular structure is 2mm. The first conductor 210 is embedded in the annular inner wall of the sealing layer 110, so that the distance from the side surface of the first conductor 210 away from the central axis of the annular structure along the radial direction of the annular structure to the annular outer surface of the sealing layer 110 is 10mm.
[0067] Understandably, the sealing layer 110 is designed with a radial thickness of 6mm-12mm along the annular structure. This thickness range ensures that the sealing layer 110 maintains its structural integrity under high-pressure conditions, resisting fluid impact and mechanical vibration with sufficient material thickness to avoid cracking or deformation due to insufficient thickness. It also provides reliable electrical isolation performance through a reasonable amount of insulating material, effectively blocking stray current paths. Simultaneously, this thickness range is compatible with the inner wall curvature of mainstream pipe diameters such as DN50-DN1500. Standardized thickness design reduces mold development costs and facilitates quick alignment with the 400mm flange sealing surface during on-site installation, improving assembly efficiency.
[0068] This application also provides an electromagnetic flowmeter 600, which includes the grounding ring 500 described in any of the above embodiments.
[0069] Specifically, in the electromagnetic flowmeter 600 provided in this application embodiment, the grounding ring 500 is embedded at the flange 400 connection at both ends of the measuring tube, its sealing layer 110 is flush with the inner wall of the measuring tube, the first conductor assembly 200 is in full contact with the fluid medium, and the second conductor assembly 300 is electrically connected to the grounding terminal of the flowmeter through the external electrode 320. In some embodiments, when measuring a highly corrosive medium, the first conductor assembly 200 is made of tantalum (Ta), the sealing layer 110 is injection molded from polytetrafluoroethylene (PTFE), and the fixing layer 120 is fixed to the flange 400 by stainless steel bolts, forming a complete charge flow path.
[0070] Understandably, applying the grounding ring 500 provided in this embodiment to the electromagnetic flowmeter 600 can significantly improve the reliability and accuracy of the measurement system. The grounding ring 500 directly contacts the fluid through the first conductor assembly 200, quickly dissipating the fluid charge and eliminating the potential difference between it and the measuring electrode, thus avoiding measurement signal fluctuations caused by electrostatic interference in traditional electromagnetic flowmeters 600. Simultaneously, the separate structural design of the sealing layer 110 and the fixing layer 120 greatly improves the sealing performance at the connection between the measuring tube and the flange 400, and, combined with corrosion-resistant materials such as polytetrafluoroethylene, extends the service life of the electromagnetic flowmeter 600. Furthermore, the grounding ring 500 is fabricated using the insulating assembly 100 and the first conductor assembly 200. Compared to related technologies, the grounding ring 500 is entirely made of precious metals, significantly reducing manufacturing costs.
[0071] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0072] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A grounding ring, characterized by, The grounding ring includes: an insulating component (100) and a first conductor component (200); The insulating component (100) has a ring structure; the first conductor component (200) is connected to the annular inner wall of the insulating component (100); The first conductor assembly (200) is in contact with the fluid medium on the side of the annular structure that is radially away from the insulating assembly (100); the first conductor assembly (200) is used to connect the external grounding line and the fluid medium.
2. The grounding ring of claim 1, wherein, The grounding ring further includes: a second conductor assembly (300); One end of the second conductor assembly (300) is connected to the first conductor assembly (200), and the other end extends radially away from the first conductor assembly (200) along the annular structure and is connected to the external grounding line.
3. The grounding ring of claim 2, wherein, The first conductor assembly (200) is embedded in the annular inner wall of the insulating assembly (100), and the first conductor assembly (200) is in contact with the fluid medium on the side of the annular structure closer to the central axis of the annular structure along the radial direction of the annular structure.
4. The grounding ring of claim 3, wherein, The first conductor assembly (200) consists of at least two first conductor elements (210), with adjacent first conductor elements (210) spaced apart, and each of the at least two first conductor elements (210) is connected to the annular inner wall and the second conductor assembly (300) respectively.
5. The grounding ring of claim 2, wherein, The second conductor assembly (300) includes a second conductor element (310) and an external electrode tab (320); One end of the second conductor (310) is connected to the first conductor assembly (200), and the other end is connected to one end of the external electrode (320); The other end of the external electrode (320) is connected to the external grounding line.
6. The grounding ring according to claim 2, characterized in that, The first conductor assembly (200) is made of a first material; the second conductor assembly (300) is made of a second material.
7. The grounding ring of claim 1, wherein, The insulating component (100) includes a sealing layer (110) and a fixing layer (120); The sealing layer (110) has an annular structure, and the annular inner wall of the sealing layer (110) is connected to the first conductor assembly (200); The fixing layer (120) is connected to the sealing layer (110) for positioning and fixing with the flange.
8. The grounding ring of claim 7, wherein, The fixing layer (120) has an annular structure and is coaxially arranged with the sealing layer (110). The annular inner wall of the fixing layer (120) is connected to the annular outer surface of the sealing layer (110). The fixing layer (120) has at least two through holes (121) along the axial direction of the fixing layer (120) on the side radially away from the sealing layer (110). The through holes (121) are opposite to the flange positioning pin and are used for positioning and fixing with the flange. Alternatively, the fixing layer (120) may be a fixing groove extending radially along the sealing layer (110), and there may be at least two fixing grooves, which are used for positioning and fixing with the flange.
9. The grounding ring of claim 7, wherein, The thickness of the sealing layer (110) along the radial direction of the annular structure is 6mm-12mm.
10. An electromagnetic flowmeter characterized by, Including the grounding ring as described in any one of claims 1-9.