Grounding structure of electromagnetic water meter

Abstract

The application relates to a grounding structure of an electromagnetic water meter, which comprises an electromagnetic water meter body (1), a grounding ring (2), mounting flanges (3) at two ends of the electromagnetic water meter body (1), and a lining (4) in the electromagnetic water meter body (1); characterized in that an inner connecting thread (31) is arranged on the inner hole wall of the mounting flange (3), an outer connecting thread (21) is arranged on the outer peripheral wall of the grounding ring (2), and the grounding ring (2) is screw-connected in the inner hole of the mounting flange (3) through the outer connecting thread (21) on the grounding ring (2) and the inner connecting thread (31) on the mounting flange (3). The mounting flange of the grounding ring and the electromagnetic water meter body are screw-connected in an integrated mode, and after installation, the grounding ring and the electromagnetic water meter body are in an integrated state, so that the customers cannot misjudge or lose the extra accessories. The grounding ring is embedded in the inner hole of the mounting flange, the length of the whole electromagnetic water meter is not additionally increased, and the installation length of the normal water meter is ensured.

Description

Technical Field

[0001] This invention relates to an electromagnetic water meter, and more particularly to a grounding structure for an electromagnetic water meter. Background Technology

[0002] Electromagnetic water meters are metering instruments specifically designed for the actual needs of water supply and usage enterprises. They can optimize water supply and usage and ensure accurate water trade settlement. The unique all-stainless steel casing design ensures the water meter can be used in highly polluted and corrosive environments, meeting domestic water meter usage requirements. It boasts advantages such as a high range ratio, high sensitivity at low flow rates, good performance at low flow velocities, and the ability to measure ultra-high flow rates.

[0003] The potential control signal of an electromagnetic water meter is a small signal, and interference can easily overwhelm its normal operating signal. A grounding system effectively prevents the potential generated by fluid scouring in the pipe, and ensures that the zero potential of the measured potential is the same as the zero potential of the medium, thus avoiding errors in the electromagnetic water meter. When using an electromagnetic water meter, care should be taken to avoid external electromagnetic interference, especially interference from power frequency electromagnetic fields, in accordance with typical electromagnetic water meter grounding methods.

[0004] like Figure 7 , 8 As shown, existing electromagnetic water meter grounding methods, in addition to the grounding electrode (whose grounding effect is limited due to its small grounding area), install grounding rings 2' at both ends of flange 1'. Since grounding rings 2' are similar to protective steel rings, customers often mistakenly remove them during installation, leading to poor or failed grounding. Grounding rings 2' are fixed to flange 1' by mounting screws 3'. The disadvantages of this grounding method are: 1. Generally, when customers receive electromagnetic water meters ordered from water meter companies, the installation team installs the meters on the pipes. Sometimes, the installation team misjudges that grounding rings 2' are merely protective steel rings and removes one or even both for various reasons, resulting in poor or failed grounding. 2. Electromagnetic water meters are generally of standard length; adding two grounding rings will exceed the standard length.

[0005] Therefore, the existing grounding method for electromagnetic water meters can be further improved. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a grounding structure for an electromagnetic water meter that is more reasonable in light of the above-mentioned existing technology.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a grounding structure for an electromagnetic water meter, comprising an electromagnetic water meter body and a grounding ring, wherein the electromagnetic water meter body has mounting flanges at both ends and a lining inside the electromagnetic water meter body; characterized in that: the inner wall of the mounting flange is provided with an internal connecting thread, the outer peripheral wall of the grounding ring is provided with an external connecting thread, and the grounding ring is threadedly connected to the inner hole of the mounting flange through the external connecting thread thereon and the internal connecting thread on the mounting flange.

[0008] As a further improvement, a sealing gasket is provided between the inner end face of the grounding ring and the lining. The sealing gasket effectively increases the sealing performance at the connection point and prevents water leakage.

[0009] As a further improvement, an anti-slip washer is provided between the sealing gasket and the inner end face of the grounding ring. The anti-slip washer serves to protect the sealing gasket.

[0010] As an improvement, the inner end of the aforementioned grounding ring has an annular mounting notch on its outer periphery, and the sealing gasket and anti-slip gasket are placed within this mounting notch. The mounting notch serves to constrain the installation of the sealing gasket and anti-slip gasket, preventing them from deforming or shifting.

[0011] Preferably, the inner bore of the mounting flange is a stepped through-hole, and the internal connecting thread is located within the larger portion of the stepped through-hole. The outer end of the lining has an outwardly turned annular retaining wall. This structure can restrain the lining, sealing gasket, and anti-slip gasket, ensuring reliable installation.

[0012] A further improvement involves fixing a ring-shaped flange gasket to the outer end face of the mounting flange. The inner end face of this flange gasket contacts the grounding ring, pressing it into the mounting flange. The flange gasket is embedded in the outer end face of the mounting flange, forming an integral structure. Therefore, when connecting the mounting flange to the pipeline, no additional flange gasket is required. The flange gasket also serves to constrain the grounding ring.

[0013] To ensure a secure connection between the flange gasket and the mounting flange, preferably, the flange gasket has a raised insert ring on the outer periphery of its inner end, and the outer end face of the mounting flange has a groove for the insert ring to be inserted into, with the insert ring being inserted into the groove.

[0014] Compared with the prior art, the advantages of the present invention are as follows:

[0015] 1. Integrated design: The grounding ring and the mounting flange of the electromagnetic water meter body are connected by threads. After installation, they are integrated into one unit, which will not cause customers to misjudge or lose extra accessories.

[0016] 2. The contact area between the grounding ring and the mounting flange is larger, meaning the grounding area is larger and the grounding effect is better;

[0017] 3. The grounding ring is embedded in the inner hole of the mounting flange, so the length of the entire electromagnetic water meter will not be increased, ensuring the normal installation length of the water meter. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of an embodiment of the present invention;

[0020] Figure 3 This is an exploded perspective view of an embodiment of the present invention;

[0021] Figure 4 This is a perspective view of the flange installation in an embodiment of the present invention;

[0022] Figure 5 This is a three-dimensional schematic diagram of the grounding ring in an embodiment of the present invention;

[0023] Figure 6 This is a three-dimensional schematic diagram of the flange gasket in an embodiment of the present invention;

[0024] Figure 7 A three-dimensional schematic diagram of the existing grounding structure;

[0025] Figure 8 This is a three-dimensional exploded view of the existing grounding structure. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figures 1-6 The figure shown is a preferred embodiment of the present invention.

[0028] A grounding structure for an electromagnetic water meter includes an electromagnetic water meter body 1 and a grounding ring 2. The electromagnetic water meter body 1 has mounting flanges 3 at both ends and a lining 4 inside. The internal structure of the electromagnetic water meter body 1 can refer to the prior art.

[0029] The inner wall of the mounting flange 3 is provided with an internal connecting thread 31, and the outer peripheral wall of the grounding ring 2 is provided with an external connecting thread 21. The grounding ring 2 is threadedly connected to the inner hole of the mounting flange 3 through the external connecting thread 21 and the internal connecting thread 31 on the mounting flange 3.

[0030] A sealing gasket 5 is provided between the inner end face of the grounding ring 2 and the lining 4. An anti-slip gasket 6 is provided between the sealing gasket 5 and the inner end face of the grounding ring 2. An annular mounting notch 22 is provided on the outer periphery of the inner end of the grounding ring 2, and the sealing gasket 5 and the anti-slip gasket 6 are placed in the mounting notch 22.

[0031] The inner hole of the mounting flange 3 is a stepped through hole, and the internal connecting thread 31 is located in the large hole of the stepped through hole. The outer end of the lining 4 has an outwardly turned annular baffle 41.

[0032] An annular flange gasket 7 is fixed to the outer end face of the mounting flange 3. The inner end face of the flange gasket 7 contacts the grounding ring 2, pressing the grounding ring into the mounting flange 3. The outer periphery of the inner end of the flange gasket 7 has a protruding insert ring 71. The outer end face of the mounting flange 3 is provided with a groove 32 for the insert ring 71 to be inserted into, and the insert ring 71 is inserted into the groove 32.

[0033] The advantages of this embodiment are:

[0034] 1. Integrated design: The grounding ring 2 and the mounting flange 3 of the electromagnetic water meter body 1 are connected by threads. After installation, they are integrated into one unit, which will not cause customers to misjudge or lose extra accessories.

[0035] 2. The contact area between the grounding ring 2 and the mounting flange 3 is larger, meaning the grounding area is larger and the grounding effect is better;

[0036] 3. The grounding ring 2 is embedded in the inner hole of the mounting flange 3, so the length of the entire electromagnetic water meter will not be increased, thus ensuring the normal installation length of the water meter.

[0037] It should be noted that in the description of this embodiment, the terms "front," "rear," "left," "right," "up," "down," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium.

Claims

1. A grounding structure for an electromagnetic water meter, comprising an electromagnetic water meter body (1) and a grounding ring (2), wherein the electromagnetic water meter body (1) has mounting flanges (3) at both ends, and the interior of the electromagnetic water meter body (1) has a lining (4); characterized in that: The inner wall of the mounting flange (3) is provided with an internal connecting thread (31), and the outer peripheral wall of the grounding ring (2) is provided with an external connecting thread (21). The grounding ring (2) is threadedly connected to the inner hole of the mounting flange (3) through its external connecting thread (21) and the internal connecting thread (31) on the mounting flange (3). A sealing gasket (5) is provided between the inner end face of the grounding ring (2) and the lining (4). The sealing gasket (5) and the inner end face of the grounding ring (2) are connected. An anti-slip washer (6) is provided between the surfaces; an annular flange gasket (7) is fixed on the outer end face of the mounting flange (3), and the inner end face of the flange gasket (7) contacts the grounding ring (2) and presses the grounding ring into the mounting flange (3); the outer periphery of the inner end of the flange gasket (7) has a protruding insert ring (71), and the outer end face of the mounting flange (3) is provided with a groove (32) for the insert ring (71) to be inserted, and the insert ring (71) is inserted into the groove (32).

2. The grounding structure of the electromagnetic water meter according to claim 1, characterized in that: The inner end of the grounding ring (2) is provided with an annular mounting notch (22), and the sealing gasket (5) and anti-slip gasket (6) are placed in the mounting notch (22).

3. The grounding structure of the electromagnetic water meter according to claim 1, characterized in that: The inner hole of the mounting flange (3) is a stepped through hole, the inner connecting thread (31) is located in the large hole of the stepped through hole, and the outer end of the lining (4) has an outwardly turned annular baffle (41).

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