Large-caliber electromagnetic water meter

Abstract

The utility model discloses a large-caliber electromagnetic water meter which comprises a pipeline. The middle of the pipeline communicates with a water meter pipe body; the upper part of the water meter pipe body is fixedly connected with a water meter body; an interlayer is arranged in the water meter pipe body; two pairs of symmetrically arranged coils are arranged in the interlayer; a plurality of scrapers in a circumferential array are arranged in the water meter pipe body, and each scraper is of a spiral structure matched with the inner wall of a pipeline; according to the water meter, acting force is applied to the spiral scraping plate through water with the high flow speed in a large-diameter pipeline, the purpose that the scraping plate continuously rotates on the inner wall of the water meter pipe body by means of water potential is achieved under the rotating connection effect of the matched bearing, and then the purpose that magnetic conductors or dirt on the water meter pipe body can be continuously scraped off can be achieved; meanwhile, the scraping plate can continuously rotate along with the water body in the flowing process of the water body, so that the impact force of the water body on the scraping plate is relieved, and the service life of the scraping plate is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic water meters, and specifically relates to a large-diameter electromagnetic water meter. Background Technique

[0002] An electromagnetic water meter is an instrument for measuring flow based on Faraday's law of electromagnetic induction. By installing a pair of detection electrodes on the pipe wall perpendicular to the axis of the measuring pipe and the magnetic field lines, when a conductive liquid flows through the measuring pipe, it will cut the magnetic field lines in the magnetic field, thereby generating an induced electromotive force inside the conductor. The current in the measuring pipe starts to transmit under the action of the induced electromotive force, forming a magnetic field. As long as the conductor continuously cuts the magnetic field lines and the magnetic field direction and the current conduction direction remain perpendicular, the electromagnetic water meter will continuously operate and measure the flow.

[0003] A Chinese patent with the publication number CN220912372U discloses an electromagnetic water meter with a filtering function. It effectively adsorbs small debris in the water pipe by setting a fine mesh inside the pipe, avoiding the scaling of debris on the inner wall of the pipe, and effectively absorbs magnetic conductors in the water body by setting a magnetic rod, avoiding the influence of magnetic conductors on the electromagnetic detector.

[0004] In the technical solution of the above patent, by setting a fine mesh, a magnetic rod and additional structures inside the pipe to pre-filter the impurities in the water body, the electromagnetic water meter is more accurate when detecting the water body flow. However, when it is applied to a large-diameter electromagnetic water meter, because large-diameter water meters are usually applied inside pipes with sufficient water volume, which have the characteristics of high flow rate, fast flow velocity and high pressure, they will continuously impact it, making it very easy to be damaged and lose its function. Secondly, structures such as fine meshes and magnetic rods are very easy to obstruct the water flow. In order to bypass the fixed obstacles, the flow velocity of the water may increase, forming a local high-speed area. This change in flow velocity will lead to the instability of the water flow, increasing the erosion and wear of the pipe. Content of the Utility Model

[0005] In order to solve the technical problems in the prior art that due to the fast flow velocity, high pressure and large flow rate of the water body in the large-diameter water meter pipe, the structures such as fine meshes and magnetic rods in the pipe are continuously subjected to large impact forces of the water body, are prone to damage, and the instability of the water flow increases the erosion and wear of the pipe, the utility model provides a large-diameter electromagnetic water meter.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A large-diameter electromagnetic water meter includes a pipe; a water meter pipe body is communicated in the middle of the pipe; a water meter body is fixedly connected to the upper part of the water meter pipe body; a sandwich layer is arranged inside the water meter pipe body; and two pairs of symmetrically arranged coils are arranged inside the sandwich layer.

[0008] Inside the water meter pipe body, a plurality of scraping plates are arranged in a circumferential array, and the scraping plates are in a spiral structure that fits the inner wall of the pipe;

[0009] A circular installation sleeve is fixedly connected to the outside of the scraping plates. The installation sleeve is arranged at both ends of the scraping plates, and its cross-section is in an L-shaped structure;

[0010] Both ends of the water meter pipe body are provided with annular grooves with one end closed. The closed ends of the annular grooves are close to each other; bearings are arranged inside the annular grooves. The outer ring of the bearing is connected to the inner wall of the annular groove, and the inner ring is connected to the corresponding installation sleeve; the sizes of the installation sleeve, the bearing, and the annular groove fit, and are the same as the inner diameter of the water meter pipe body.

[0011] Furthermore, first flange plates are fixedly connected to the positions of the pipe corresponding to the output end and the input end of the water meter pipe body; second flange plates are fixedly connected to the output end and the input end of the water meter pipe body; the pipe is connected to the water meter pipe body through the cooperation of the first flange plate and the second flange plate.

[0012] Furthermore, a guide ring is fixedly connected to the inside of the scraping plates. Both ends of the guide ring are in an arc-shaped structure that expands outward.

[0013] Furthermore, a fixing ring is arranged between the first flange plate and the second flange plate.

[0014] Furthermore, a rubber layer is bonded to the surface of the fixing ring close to the first flange plate. The rubber layer is in a circular structure, and its inner diameter is equal to the outer diameter of the water meter pipe body.

[0015] Furthermore, a sealing gasket is arranged between the fixing ring and the second flange plate. The sealing gasket is used to increase the airtightness between the second flange plate and the fixing ring.

[0016] Furthermore, the scraping plates are made of PVC plastic. The surface of the scraping plates is polished smoothly and fits the inner wall of the water meter pipe body.

[0017] The beneficial effects of the present utility model:

[0018] By utilizing the water body with a relatively fast flow rate in the large-diameter pipe, the present utility model applies a force to the spiral scraping plates. With the rotational connection function of the bearings, the purpose that the scraping plates continuously rotate on the inner wall of the water meter pipe body by means of the water potential is realized. Furthermore, the purpose of continuously scraping the magnetic conductors or dirt on the water meter pipe body can be achieved, and it will not adhere to the inner wall of the water meter pipe body to affect the detection accuracy of the water meter body. At the same time, since the scraping plates will continuously rotate along with the water body flow, the impact force of the water body on the scraping plates is reduced, and the service life of the scraping plates is improved. Description of the Drawings

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a sectional view of the present invention;

[0022] Figure 3 is Figure 2 a partial enlarged view of part A in;

[0023] Figure 4 It is a schematic diagram of the structure of the spiral scraper in the present invention;

[0024] Figure 5 It is an exploded view of the fixing ring in the present invention;

[0025] Figure 6 It is a side view of the present invention;

[0026] In the drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Pipeline; 2. Water meter pipe body; 3. Water meter body; 4. Interlayer; 5. Coil; 6. Annular groove; 7. Bearing; 8. Installation sleeve; 9. Scraper; 10. Flow guiding ring; 11. First flange; 12. Fixing ring; 13. Sealing gasket; 14. Second flange; 15. Rubber layer. Specific embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0029] Please refer to Figure 1 and Figure 5As shown in the figure, a large-diameter electromagnetic water meter includes a pipeline 1; a water meter pipe body 2 is connected in the middle of the pipeline 1; first flange plates 11 are fixedly connected to the positions of the pipeline 1 corresponding to the output end and the input end of the water meter pipe body 2; second flange plates 14 are fixedly connected to the output end and the input end of the water meter pipe body 2; the pipeline 1 is connected to the water meter pipe body 2 through the cooperation of the first flange plate 11 and the second flange plate 14; a water meter body 3 is fixedly connected to the upper part of the water meter pipe body 2; a sandwich layer 4 is provided inside the water meter pipe body 2; two pairs of symmetrically arranged coils 5 are arranged inside the sandwich layer 4, and the coils 5 are used to cooperate with the water meter body 3 to detect the water flow rate inside the water meter pipe body 2.

[0030] Please refer to again Figure 2 and Figure 6 As shown in the figure, a plurality of scraping plates 9 arranged in a circumferential array are provided inside the water meter pipe body 2. The scraping plates 9 are in a spiral structure that fits the inner wall of the pipeline 1 and are used to continuously scrape off the magnetic conductors and dirt attached to the inner wall of the pipeline 1; the scraping plates 9 are made of PVC plastic to avoid the scraping plates 9 interfering with the normal detection of the electromagnetic water meter. The surfaces of the scraping plates 9 are polished smoothly and fit the inner wall of the water meter pipe body 2 to reduce the friction between the water body and the scraping plates 9;

[0031] Please refer to again Figure 4 As shown in the figure, an annular mounting sleeve 8 is fixedly connected to the outside of the scraping plates 9. The mounting sleeve 8 is arranged at both ends of the scraping plates 9 and has an L-shaped cross-sectional structure;

[0032] Please refer to again Figure 2 and Figure 3 As shown in the figure, annular grooves 6 with one end closed are provided at both ends of the water meter pipe body 2, and the closed ends of the annular grooves 6 are close to each other; bearings 7 are arranged inside the annular grooves 6. The outer rings of the bearings 7 are connected to the inner walls of the annular grooves 6, and the inner rings are connected to the corresponding mounting sleeves 8; the sizes of the mounting sleeves 8, the bearings 7, and the annular grooves 6 fit each other and are the same as the inner diameter of the water meter pipe body 2.

[0033] A flow guiding ring 10 is fixedly connected to the inside of the scraping plates 9. Both ends of the flow guiding ring 10 are in an arc-shaped structure that expands outwards and is used to increase the impact force of the water body on the scraping plates 9.

[0034] Through the setting of the flow guiding ring 10, part of the water body is concentrated on the inner wall of the water meter pipe body 2, increasing the impact force of the water body on the scraping plates 9, and further increasing the rotational force of the scraping plates 9.

[0035] By providing the annular grooves 6 and setting the outer ends of the annular grooves 6 to be open, the bearings 7, the mounting sleeves 8, and the scraping plates 9 can be quickly disassembled after the water meter pipe body 2 is disassembled, providing convenience for operators to repair the electromagnetic water meter.

[0036] Please refer to again Figure 4As shown in the figure, a fixing ring 12 is provided between the first flange 11 and the second flange 14; a rubber layer 15 is fixedly connected to the side of the fixing ring 12 close to the first flange 11. The rubber layer 15 is in an annular structure, and its inner diameter is equal to the outer diameter of the water meter pipe body 2, which is used to increase the airtightness between the fixing ring 12 and the first flange 11; a sealing gasket 13 is provided between the fixing ring 12 and the second flange 14, and this sealing gasket 13 is used to increase the airtightness between the second flange 14 and the fixing ring 12.

[0037] Through the setting of the fixing ring 12, the rapid installation and disassembly between the bearing 7 and the water meter pipe body 2 can be realized, which provides convenience for the operators.

[0038] During specific operations, water flow is introduced into the pipeline 1 and the inside of the water meter pipe body 2. During the process of the water flow passing through the water meter pipe body 2, the water meter body 3 continuously detects its flow rate. At the same time, since the water velocity in the large-diameter pipeline 1 is relatively fast, a force can be applied to the spiral-shaped scraper 9. With the rotational connection of the bearing 7, the purpose that the scraper 9 continuously rotates on the inner wall of the water meter pipe body 2 by means of the water potential can be achieved. Furthermore, the purpose of continuously scraping the magnetic conductor or dirt on the water meter pipe body 2 can be realized, and it will not adhere to the inner wall of the water meter pipe body 2 and affect the detection accuracy of the water meter body 3. At the same time, since the scraper 9 will continuously rotate following the water flow, the impact force of the water on the scraper 9 can be reduced, and the service life of the scraper 9 is improved;

[0039] For another reason, according to Bernoulli's principle, the fluid velocity on the inner wall of the pipeline 1 is less than the velocity at the center of the pipeline 1. And the scraper 9 in this solution is arranged on the inner wall of the pipeline 1, so the impact force suffered is the smallest, which can extend its service life and will not affect the detection accuracy of the water meter body 3.

[0040] It should be noted here that: First of all, although the water velocity in the large-diameter electromagnetic water meter is fast, which to a certain extent affects the adhesion of dirt, dirt will still adhere under the condition that the pipeline 1 stops running; Secondly, since the magnetic conductor in the water has magnetism and can be adsorbed on the inner wall of the water pipe, it is necessary to set the scraper 9 in the large-diameter electromagnetic water meter to scrape it.

[0041] In the description of the specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0042] The above content is only an example and explanation of the structure of the present utility model. Those skilled in the art of the present technology can make various modifications, supplements, or use similar methods for substitution to the described specific embodiments. As long as it does not deviate from the structure of the utility model or exceed the scope defined by this claims, it shall fall within the protection scope of the present utility model.

Claims

1. A large-diameter electromagnetic water meter, characterized in that: It includes a pipeline (1); a water meter pipe body (2) is connected to the middle of the pipeline (1); a water meter body (3) is fixedly connected to the upper part of the water meter pipe body (2); a sandwich layer (4) is provided inside the water meter pipe body (2); two pairs of symmetrically arranged coils (5) are arranged inside the sandwich layer (4); A plurality of scraping plates (9) arranged in a circumferential array are provided inside the water meter pipe body (2), and the scraping plates (9) are in a spiral structure that fits the inner wall of the pipeline (1); An annular mounting sleeve (8) is fixedly connected to the outside of the scraping plates (9) together. The mounting sleeve (8) is arranged at both ends of the scraping plates (9), and the cross section is in an L-shaped structure; Annular grooves (6) with one end closed are provided at both ends of the water meter pipe body (2). The closed ends of the annular grooves (6) are close to each other; bearings (7) are arranged inside the annular grooves (6). The outer ring of the bearing (7) is connected to the inner wall of the annular groove (6), and the inner ring is connected to the corresponding mounting sleeve (8); the sizes of the mounting sleeve (8), the bearing (7) and the annular groove (6) fit each other and are the same as the inner diameter of the water meter pipe body (2).

2. The large-diameter electromagnetic water meter according to claim 1, characterized in that: First flange plates (11) are fixedly connected to the positions of the pipeline (1) corresponding to the output end and the input end of the water meter pipe body (2); second flange plates (14) are fixedly connected to the output end and the input end of the water meter pipe body (2); the pipeline (1) is connected to the water meter pipe body (2) through the cooperation of the first flange plate (11) and the second flange plate (14).

3. A large-diameter electromagnetic water meter according to claim 1, characterized in that: A flow guiding ring (10) is fixedly connected to the inside of the scraping plates (9) together. Both ends of the flow guiding ring (10) are in an arc structure that expands outwards.

4. The large-diameter electromagnetic water meter according to claim 2, wherein: A fixing ring (12) is arranged between the first flange plate (11) and the second flange plate (14).

5. The large-diameter electromagnetic water meter according to claim 4, wherein: A rubber layer (15) is fixedly connected to the surface of the fixing ring (12) close to the first flange plate (11). The rubber layer (15) is in an annular structure, and the inner diameter is equal to the outer diameter of the water meter pipe body (2).

6. A large-diameter electromagnetic water meter according to claim 4, characterized in that: A sealing gasket (13) is arranged between the fixing ring (12) and the second flange plate (14), and the sealing gasket (13) is used to increase the airtightness between the second flange plate (14) and the fixing ring (12).

7. The large-diameter electromagnetic water meter according to claim 1, wherein: The scraping plates (9) are made of PVC plastic, and the surface of the scraping plates (9) is polished smoothly and fits the inner wall of the water meter pipe body (2).

Images