A water flow measuring device

Abstract

The utility model discloses a water flow measuring device relates to water flow measuring equipment technical field, and its technical key points include electromagnetic flowmeter body, and the inner circle face fixed mounting has porous ceramic flow guide cover, shielding structure is arranged in the electromagnetic flowmeter body inner chamber, shielding structure includes: fixed mounting in the inner track of electromagnetic flowmeter body inner circle face, and the inner track inner chamber slidingly connects the inner sliding ring, the public magnet block is symmetrically installed on the inner sliding ring, and the L rod is fixedly connected on the public magnet block, and the shielding arc block is fixedly installed on the L rod, the utility model discloses the rotation of outer sliding ring and the female magnet block is used, and the inner sliding ring and shielding arc block cover electrode through magnetic force traction, and under the action of rubber sealing washer, cooperation telescopic spring pushes the mortgage arc block and forms double seal, and the fluid is isolated with electrode contact, effectively solve the physical wear and tear and chemical corrosion problem that the electrode is exposed continuously to cause when the non - measurement period, significantly prolongs electrode life.

Description

Technical Field

[0001] This utility model relates to the technical field of water flow measurement equipment, specifically a water flow measurement device. Background Technology

[0002] Based on significant differences in their core measurement principles and application scenarios, water flow measurement devices have formed a diversified technical system, with mechanical, acoustic, electromagnetic, and thermodynamic types constituting the four typical categories. Among the many types, electromagnetic flowmeters, with their wide range and near-universal adaptability to various conductive fluids, have become the preferred solution in fields such as municipal water supply network monitoring and chemical production process control. However, their core working principle requires direct contact between built-in electrodes and the fluid being measured to effectively capture the induced electromotive force signal.

[0003] However, in practical engineering applications, not all scenarios require continuous flow measurement. The problem is that even during periods when flow detection is not performed, the electrodes of an electromagnetic flowmeter are inevitably exposed to the flowing fluid environment. When the transported medium contains hard particles, is highly chemically corrosive, or maintains a high flow velocity within the pipeline, this continuous exposure significantly exacerbates the physical wear (e.g., particle impact and scraping) and chemical corrosion (e.g., electrolysis or acid / alkali erosion) of the electrodes. This dual damage not only directly leads to the attenuation of the induced potential signal and systematic deviations in the measurement results, severely affecting data reliability, but also irreversibly shortens the service life of the electrodes and even the entire flowmeter, increasing maintenance costs and operational risks. Therefore, we propose a novel water flow measurement device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a water flow measurement device that can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a water flow measurement device, comprising:

[0006] The electromagnetic flowmeter body has a porous ceramic flow guide shroud fixedly installed on its inner circular surface.

[0007] A shielding structure is disposed within the internal cavity of the electromagnetic flowmeter body; the shielding structure includes:

[0008] An inner track is fixedly installed on the inner circular surface of the electromagnetic flowmeter body, and an inner sliding ring is slidably connected to the inner cavity of the inner track;

[0009] A male magnet block is symmetrically installed on the inner sliding ring, and an L-shaped rod is fixedly connected to the male magnet block;

[0010] A blocking arc block is fixedly installed on the L-bar, and a spring groove is provided on the outer arc surface of the blocking arc block;

[0011] Several telescopic springs are distributed in the spring groove, and the ends of the telescopic springs are fixedly installed with a pressing arc block;

[0012] An outer track is fixedly installed on the outer circular surface of the electromagnetic flowmeter body, and an outer sliding ring is slidably connected to the inner cavity of the outer track.

[0013] The female magnet blocks are symmetrically installed on the outer sliding ring.

[0014] Preferably, the electromagnetic flowmeter body is made of non-magnetic 316L stainless steel, and its inner lining is made of PTFE material with a thickness of 2-3mm; water flow direction indicator arrows are symmetrically arranged on the outer circular surface of the electromagnetic flowmeter body; the electrodes of the electromagnetic flowmeter body are flush-mounted, and the sensing end of the electromagnetic flowmeter body electrode is conformally flush with the inner surface of the inner lining of the electromagnetic flowmeter body.

[0015] Preferably, the porous ceramic flow guide is located on the electrode side of the electromagnetic flowmeter body and is in the shape of a hollow frustum; several fluid flow holes are opened on its surface, and the axis of the fluid flow holes is parallel to the axis of the flow channel of the electromagnetic flowmeter body.

[0016] Preferably, the inner track and inner sliding ring are coplanar with the outer track and outer sliding ring; the male magnet block and the female magnet block are located on the same straight line.

[0017] Preferably, a blocking and positioning block is fixedly installed in the inner cavity of the outer track, wherein the blocking and positioning block is located in the lower middle part of the outer track.

[0018] Preferably, the outer arc surfaces of the blocking arc block and the mortise arc block are fixedly fitted with rubber sealing gaskets that are compatible with them, and are in close contact with the inner circular surface of the electromagnetic flowmeter body; the geometry of the spring groove matches the mortise arc block, and the telescopic spring is in a pre-compressed state.

[0019] Preferably, the coverage area of ​​the mortise arc block and the shielding arc block is greater than the arc surface area of ​​the sensing end of the electromagnetic flowmeter body electrode.

[0020] Preferably, a linkage rod is fixedly installed at one end of the L-rod near the porous ceramic guide shroud, and an inner arc-shaped cleaning block and an outer arc-shaped cleaning block are fixedly installed at the other end of the linkage rod near the porous ceramic guide shroud.

[0021] Preferably, the outer arc surface of the inner arc-shaped cleaning block is in contact with the inner arc surface of the porous ceramic guide shroud; the inner arc surface of the outer arc-shaped cleaning block is in contact with the outer arc surface of the porous ceramic guide shroud.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By setting up a magnetically driven linkage shielding structure, the rotation of the outer sliding ring and the mother magnet block, through magnetic traction, precisely covers the electrode with the inner sliding ring and the shielding arc block. With the help of the rubber sealing gasket and the extension spring pushing the shielding arc block, a double seal is formed, isolating fluid from contact with the electrode. This effectively solves the problem of physical wear and chemical corrosion caused by continuous electrode exposure during non-measurement periods, significantly extending electrode life.

[0024] 2. By setting up a porous ceramic flow guide, the fluid flow hole structure parallel to the flow channel axis suppresses turbulence and ensures the stability of the measurement flow field; at the same time, it mechanically blocks large particles of impurities from directly impacting the electrodes, reducing the risk of electrode contamination and ensuring the stability and accuracy of the measurement signal.

[0025] 3. By setting up a linkage rod, an inner arc-shaped cleaning block and an outer arc-shaped cleaning block, when the outer sliding ring is moved to switch working states, the inner / outer arc-shaped cleaning blocks are driven to scrape off impurities on the inner and outer walls of the porous ceramic guide shroud. At the same time, the shielding arc block and the pressing arc block scrape the electrode surface, achieving "zero additional operation" cleaning, maintaining electrode sensitivity and reducing maintenance frequency. Attached Figure Description

[0026] Figure 1 This is a complete structural schematic diagram of the present invention;

[0027] Figure 2 This utility model Figure 1 Another perspective structural diagram;

[0028] Figure 3 This is a partial exploded structural diagram of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the inner sliding ring and the outer sliding ring of this utility model;

[0030] Figure 5 This utility model Figure 1 A schematic diagram of the cross-sectional structure;

[0031] Figure 6 This is a schematic diagram of the structure of the telescopic spring of this utility model.

[0032] In the picture:

[0033] 1. Electromagnetic flowmeter body; 2. Porous ceramic guide shroud; 3. Shielding structure; 301. Inner track; 302. Inner sliding ring; 303. Male magnet block; 304. L-rod; 305. Shielding arc block; 306. Spring groove; 307. Telescopic spring; 308. Shielding arc block; 309. Outer track; 310. Outer sliding ring; 311. Female magnet block; 4. Linkage rod; 5. Inner arc-shaped cleaning block; 6. Outer arc-shaped cleaning block. Detailed Implementation

[0034] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0035] This utility model provides a technical solution:

[0036] Please see Figures 1-6 A water flow measurement device includes: an electromagnetic flowmeter body 1, with a porous ceramic flow guide shroud 2 fixedly installed on its inner circular surface; a shielding structure 3 disposed in the inner cavity of the electromagnetic flowmeter body 1; the shielding structure 3 includes: an inner track 301 fixedly installed on the inner circular surface of the electromagnetic flowmeter body 1, with an inner sliding ring 302 slidably connected to the inner cavity of the inner track 301; male magnet blocks 303 symmetrically installed on the inner sliding ring 302, with an L-rod 304 fixedly connected to the male magnet block 303; a shielding arc block 305 fixedly installed on the L-rod 304, with a spring groove 306 formed on the outer arc surface of the shielding arc block 305; a plurality of telescopic springs 307 distributed in the spring groove 306, with a pressing arc block 308 fixedly installed at the end of the telescopic spring 307; an outer track 309 fixedly installed on the outer circular surface of the electromagnetic flowmeter body 1, with an outer sliding ring 310 slidably connected to the inner cavity of the outer track 309; and female magnet blocks 311 symmetrically installed on the outer sliding ring 310.

[0037] The porous ceramic flow guide shroud 2 pre-filters the fluid and stabilizes the flow field, with its parallel channels suppressing turbulence. A magnetic drive linkage system (inner track 301, outer track 309, inner sliding ring 302, outer sliding ring 310, male magnet 303, and female magnet 311) enables non-contact transmission; operating the outer sliding ring 310 pulls the shielding arc block 305 to cover the electrode. A compressed telescopic spring 307 within the spring groove 306 pushes the shielding arc block 308 to form an adaptive double barrier, isolating the electrode from corrosive fluids / particles. This structure provides physical isolation during non-measuring periods, directly solving the wear and corrosion problems caused by continuous electrode exposure in the prior art, while also providing the power basis for subsequent self-cleaning functions.

[0038] In some embodiments, the electromagnetic flowmeter body 1 is made of non-magnetic 316L stainless steel, and its inner lining is made of PTFE material with a thickness of 2-3mm; water flow direction indicator arrows are symmetrically arranged on the outer circular surface of the electromagnetic flowmeter body 1; the electrodes of the electromagnetic flowmeter body 1 are flush-mounted, and the sensing end of the electrode of the electromagnetic flowmeter body 1 is conformally flush with the inner surface of the inner lining of the electromagnetic flowmeter body 1.

[0039] In this embodiment, the electromagnetic flowmeter body 1 is made of non-magnetic 316L stainless steel and the inner lining is made of PTFE material with a thickness of 2-3mm, which can avoid interference with the magnetic force of the male magnet block 303 and the female magnet block 311. The water flow direction indicator arrow can be used to easily determine the installation direction of the electromagnetic flowmeter body 1, avoiding the situation where the electromagnetic flowmeter body 1 is installed backwards. The electrode sensing end of the electromagnetic flowmeter body 1 is designed to be conformally flush with the inner surface of the inner lining of the electromagnetic flowmeter body 1, which can prevent the blocking arc block 305 and the pressing arc block 308 from scraping the electrode and causing wear during rotation. At the same time, when impurities are attached to the electrode sensing end of the electromagnetic flowmeter body 1, the impurities will protrude. Therefore, the blocking arc block 305 and the pressing arc block 308 can scrape off the impurities during rotation without causing wear to the electrode sensing end.

[0040] In some embodiments, the porous ceramic flow guide shroud 2 is located on the electrode side of the electromagnetic flowmeter body 1 and is in the shape of a hollow frustum; a plurality of fluid flow holes are opened on its surface, and the axis of the fluid flow holes is parallel to the flow channel axis of the electromagnetic flowmeter body 1.

[0041] In this embodiment, the porous ceramic flow guide shroud 2 is installed close to the electrode side of the electromagnetic flowmeter body 1 with a hollow frustum-shaped structure. Several fluid flow holes parallel to the flow channel axis are opened on the surface to force straight water flow, suppress turbulence and vortex formation, and ensure that the flow field in the measurement section is stable and meets the requirements of electromagnetic induction. At the same time, the flow guide shroud blocks hard particles from directly impacting the electrode through mechanical sieving, while the parallel channel design maximizes the preservation of fluid kinetic energy when filtering large particulate impurities. This reduces the risk of physical wear and chemical contamination of the electrode and avoids additional pressure loss or flow signal distortion caused by the flow guide structure, thus ensuring measurement accuracy and electrode life from the source.

[0042] In some embodiments, the inner track 301, the inner sliding ring 302, the outer track 309, and the outer sliding ring 310 are coplanar; the male magnet block 303 and the female magnet block 311 are located on the same straight line.

[0043] In this embodiment, the coplanar arrangement of the inner track 301, outer track 309, inner sliding ring 302, and outer sliding ring 310 ensures synchronized movement trajectories. The co-linear arrangement of the male magnet block 303 and female magnet block 311 forms an efficient magnetic force transmission path. When the outer sliding ring 310 is manually rotated, the magnetic attraction force is transmitted linearly, driving the inner sliding ring 302 to follow, achieving complete coverage or exposure of the shielding arc block 305 and the electrode. This design eliminates transmission deviation and ensures positioning accuracy during protection / measurement state switching.

[0044] In some embodiments, a blocking positioning block is fixedly installed in the inner cavity of the outer track 309, wherein the blocking positioning block is located in the lower middle part of the outer track 309.

[0045] In this embodiment, the shielding positioning block serves as the mechanical limiting point of the outer track 309. Its operation is as follows: when the outer sliding ring 310 rotates to the positioning block position, it is limited. At this time, magnetic linkage causes the shielding arc block 305 to accurately position and cover the electrode. This design directly solves the problem of positioning deviation in the protective state, ensuring that the electrode is completely sealed, avoiding protection failure caused by fluid leakage, and providing the operator with clear tactile feedback of being in position.

[0046] In some embodiments, the outer arc surfaces of the blocking arc block 305 and the mortise arc block 308 are fixedly fitted with rubber sealing gaskets that are compatible with them, and are in close contact with the inner circular surface of the electromagnetic flowmeter body 1; the geometry of the spring groove 306 matches that of the mortise arc block 308, and the telescopic spring 307 is in a pre-compressed state.

[0047] In this embodiment, the rubber sealing gaskets on the shielding arc block 305 and the mortise arc block 308 are tightly fitted to the inner wall of the electromagnetic flowmeter body 1. The pre-compressed telescopic spring 307 continuously pushes the mortise arc block 308 against the electrode sensing end area, forming a gapless double-layer dynamic seal. This structure directly blocks the fluid penetration path, completely solving the problems of chemical corrosion and particle impact caused by continuous exposure of the electrodes in the prior art. At the same time, the spring preload compensates for assembly tolerances, ensuring long-term sealing reliability.

[0048] In some embodiments, the coverage area of ​​the mortise arc block 308 and the shielding arc block 305 is greater than the arc surface area of ​​the electrode sensing end of the electromagnetic flowmeter body 1.

[0049] In this embodiment, when the shielding arc block 305 moves to the electrode position, it and the mortise arc block 308 together form a redundant coverage area, completely enclosing the electrode contact surface; at this time, the spring preload pushes the mortise arc block 308 to adaptively press, ensuring a seal without dead angles. This design directly solves the problem of poor sealing caused by manufacturing tolerances or wear, completely preventing fluid from seeping into the electrode area from the edge, eliminating the potential hazards of electrode corrosion and particle impact in the background technology from the root, and improving the reliability of protection.

[0050] Please see Figures 2-5 A linkage rod 4 is fixedly installed at one end of the L-rod 304 near the porous ceramic guide shroud 2. An inner arc-shaped cleaning block 5 and an outer arc-shaped cleaning block 6 are fixedly installed at one end of the linkage rod 4 near the porous ceramic guide shroud 2, respectively.

[0051] When the outer sliding ring 310 rotates, the linkage rod 4 is driven to rotate synchronously through the L rod 304, which drives the inner arc-shaped cleaning block 5 and the outer arc-shaped cleaning block 6 to slide and scrape along the inner and outer walls of the porous ceramic flow guide shroud 2. This process is completed automatically when switching the electrode protection / measurement state, directly removing impurities accumulated in the pores of the flow guide shroud, avoiding flow field distortion or filtration failure caused by blockage of the flow holes, maintaining the flow stability and pre-filtration function of the flow guide shroud from the source, ensuring measurement accuracy and reducing the frequency of manual cleaning.

[0052] In some embodiments, the outer arc surface of the inner arc-shaped cleaning block 5 is in contact with the inner arc surface of the porous ceramic guide shroud 2; the inner arc surface of the outer arc-shaped cleaning block 6 is in contact with the outer arc surface of the porous ceramic guide shroud 2.

[0053] In this embodiment, the tightly fitting arc surface design allows the inner arc-shaped cleaning block 5 to scrape away impurities attached to the inner wall of the porous ceramic guide shroud 2 when it rotates with the linkage rod 4, while the outer arc-shaped cleaning block 6 simultaneously cleans the sludge on the outer wall. This wrapping dynamic scraping directly removes blockages on the inside and outside of the flow hole, avoiding flow field distortion or filtration failure caused by a decrease in porosity, ensuring the continuity of the guide shroud's flow stabilization and pre-filtration functions, maintaining measurement accuracy from the source and eliminating the need for manual cleaning.

[0054] In practical use, the working principle of this utility model is as follows:

[0055] When flow detection is not required, the outer sliding ring 310 is manually rotated along the outer track 309, causing the female magnet block 311 to move synchronously. Through magnetic attraction, the male magnet block 303 is controlled to pull the inner sliding ring 302 to rotate along the inner track 301, thereby driving the L-rod 304 and the blocking arc block 305 fixed on the L-rod 304 to slide against the inner wall of the electromagnetic flowmeter body 1. When the female magnet block 311 moves to the blocking positioning block of the outer track 309, the blocking arc block 305 is precisely positioned directly above the electrode, completely covering the electrode sensing end surface. At this time, the compressed telescopic spring 307 pushes the pressing arc block 308 to press tightly against the electrode area, forming a double sealing barrier with the rubber sealing gasket. This design, through the combined effect of magnetic drive and spring preload, effectively blocks direct contact between the fluid and the electrode, avoiding physical wear caused by hard particle impact and chemical degradation caused by corrosive media.

[0056] When flow detection is required, the outer sliding ring 310 is rotated approximately 90° in the reverse direction. The mother magnet 311, through magnetic linkage, pulls the shielding arc block 305 to a non-working position offset from the electrode, thus fully exposing the electrode. At this time, the electrode is fully exposed to the fluid environment. Combined with the function of the porous ceramic flow guide shroud 2—whose fluid channel axis remains parallel to the main axis of the flowmeter (without changing the cross-section or electric / flow field distribution. Reason: The porous ceramic flow guide shroud, through its parallel channel geometry design and insulating material properties, achieves pre-filtration and flow stabilization functions without physically altering the cross-sectional shape of the flow channel or interfering with the original distribution of the electric and flow fields, thereby ensuring the measurement accuracy of the electromagnetic flowmeter)—it effectively suppresses the generation of secondary flows and vortices, ensuring that the flow field in the measurement section conforms to the requirements of the electromagnetic induction law. This flow guide structure, through optimized porosity design, filters large particulate impurities while maintaining fluid kinetic energy, reducing the probability of electrode surface contamination and ensuring the stability and accuracy of the measurement signal.

[0057] During long-term operation, the repeated movement of the outer sliding ring 310 synchronously drives the linkage rod 4 and the inner arc-shaped cleaning block 5 and outer arc-shaped cleaning block 6 fixed thereon to rotate. The inner arc-shaped cleaning block 5 scrapes away impurities adhering to the inner wall of the porous ceramic flow guide shroud 2, while the outer arc-shaped cleaning block 6 simultaneously cleans the sediment on its outer wall. At the same time, the shielding arc block 305 and the cladding arc block 308 scrape against the electrode contact surface during movement, removing residual deposits and maintaining electrode sensitivity. This self-cleaning mechanism forms a time-series functional switch with the flow detection process, synchronously completing equipment maintenance during non-measurement periods, significantly extending electrode life and ensuring measurement accuracy.

[0058] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A water flow measurement device, characterized in that, include: The electromagnetic flowmeter body (1) has a porous ceramic flow guide cover (2) fixedly installed on its inner circular surface. A shielding structure (3) is disposed within the inner cavity of the electromagnetic flowmeter body (1); the shielding structure (3) includes: An inner track (301) is fixedly installed on the inner circular surface of the electromagnetic flowmeter body (1), and an inner sliding ring (302) is slidably connected to the inner cavity of the inner track (301). A male magnet block (303) is symmetrically installed on the inner sliding ring (302), and an L rod (304) is fixedly connected to the male magnet block (303). A blocking arc block (305) is fixedly installed on the L rod (304), and a spring groove (306) is provided on the outer arc surface of the blocking arc block (305). Several telescopic springs (307) are distributed in the spring groove (306), and the ends of the telescopic springs (307) are fixedly installed with the collapsible arc blocks (308). An outer track (309) is fixedly installed on the outer circular surface of the electromagnetic flowmeter body (1), and an outer sliding ring (310) is slidably connected to the inner cavity of the outer track (309). A female magnet block (311) is symmetrically installed on the outer sliding ring (310).

2. The water flow measuring device according to claim 1, characterized in that: The electromagnetic flow meter body (1) is made of non-magnetic 316L stainless steel, and its inner lining is made of PTFE material with a thickness of 2-3mm; water flow direction indicator arrows are symmetrically arranged on the outer circular surface of the electromagnetic flow meter body (1). The electrodes of the electromagnetic flowmeter body (1) are installed flush, and the sensing end of the electrode of the electromagnetic flowmeter body (1) is conformally flush with the inner surface of the inner lining of the electromagnetic flowmeter body (1).

3. The water flow measuring device according to claim 1, characterized in that: The porous ceramic flow guide shroud (2) is located on the electrode side of the electromagnetic flowmeter body (1) and is in the shape of a hollow frustum; several fluid flow holes are opened on its surface, and the axis of the fluid flow holes is parallel to the flow channel axis of the electromagnetic flowmeter body (1).

4. The water flow measuring device according to claim 1, characterized in that: The inner track (301), inner sliding ring (302) are coplanar with the outer track (309) and outer sliding ring (310); the male magnet block (303) and female magnet block (311) are located on the same straight line.

5. The water flow measuring device according to claim 1, characterized in that: A blocking and positioning block is fixedly installed in the inner cavity of the outer track (309), wherein the blocking and positioning block is located in the lower middle part of the outer track (309).

6. The water flow measuring device according to claim 1, characterized in that: The outer arc surfaces of the shielding arc block (305) and the mortgaging arc block (308) are fixedly fitted with rubber sealing gaskets that are compatible with them, and are tightly fitted with the inner circular surface of the electromagnetic flowmeter body (1); the geometry of the spring groove (306) matches that of the mortgaging arc block (308), and the telescopic spring (307) is in a pre-compressed state.

7. A water flow measuring device according to claim 1, characterized in that: The coverage area of ​​the collateral arc block (308) and the shielding arc block (305) is greater than the arc surface area of ​​the electrode sensing end of the electromagnetic flowmeter body (1).

8. A water flow measuring device according to claim 1, characterized in that: A linkage rod (4) is fixedly installed at one end of the L rod (304) near the porous ceramic guide shroud (2), and an inner arc-shaped cleaning block (5) and an outer arc-shaped cleaning block (6) are fixedly installed at one end of the linkage rod (4) near the porous ceramic guide shroud (2).

9. A water flow measuring device according to claim 8, characterized in that: The outer arc surface of the inner arc-shaped cleaning block (5) is in contact with the inner arc surface of the porous ceramic guide shroud (2); the inner arc surface of the outer arc-shaped cleaning block (6) is in contact with the outer arc surface of the porous ceramic guide shroud (2).

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