CN219368831U

CN219368831U - Electronic water meter

Info

Publication number: CN219368831U
Application number: CN202223394214.0U
Authority: CN
Inventors: 梅学海; 陈繇; 周勇; 蔡锐; 陈为义
Original assignee: Zhejiang Tancy Instrument Science & Technology Co ltd
Current assignee: Zhejiang Tancy Instrument Science & Technology Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-07-18
Anticipated expiration: 2032-12-15

Abstract

The utility model particularly relates to an electronic water meter which comprises a main body, a shell, a first shielding component and a second shielding component, wherein the main body is provided with a guide pipe, and the outer peripheral surface of the guide pipe is provided with a coil and an electrode. The first shielding assembly is provided with a first magnetic shielding cover and a second magnetic shielding cover, the first magnetic shielding cover and the second magnetic shielding cover are spliced into a shielding layer which is wrapped on the outer side of the coil, and the shielding layer is provided with an avoidance hole through which the power electrode passes. The second shielding assembly comprises an electrode shielding seat and an electrode shielding cover, the electrode shielding seat is sleeved on an electrode positioned between the two coils, the electrode shielding cover is arranged on the electrode shielding seat, and the electrode shielding cover and the electrode shielding seat form a protection space for accommodating the electrode. The electronic water meter provided by the utility model is beneficial to solving the problem that the existing electromagnetic water meter has installation defects in shielding measures adopted for magnetic field and electric field interference by arranging the first shielding component and the second shielding component.

Description

Electronic water meter

Technical Field

The utility model belongs to the technical field of metering instruments, and particularly relates to an electronic water meter.

Background

The electromagnetic water meter is designed based on Faraday's law of electromagnetic induction, the measuring tube of the electromagnetic water meter sensor is a non-magnetic alloy conduit lined with insulating material, two electrodes are fixed on the measuring tube along the pipe diameter direction and penetrate through the pipe wall, and when the exciting coil is excited by pulses, a working magnetic field is generated in the direction perpendicular to the measuring pipeline. However, the electromagnetic water meter still has the defects that when the electromagnetic water meter is interfered by an external magnetic field (such as artificial permanent magnet placed close to the electromagnetic water meter), the inherent magnetic field or magnetic line distribution condition in the water meter is destroyed, the magnetic transmission capability is weakened, and the magnetic transmission failure is led to the magnetic transmission water meter to count less or not.

At present, shielding measures adopted by the existing electromagnetic water meter products are an electric field shielding structure and a magnetostatic shielding structure. The electrode shielding cover is welded on the guide pipe or directly sleeved on the electrode seat by the electric field shielding structure. The magnetostatic shielding structure is fixed together with the electrode by a nut.

However, the electrode shielding structure is welded on the catheter and cannot be disassembled, if the electrode shielding structure is directly sleeved on the electrode base, the electrode shielding structure is easy to loosen, and the electrode shielding structure and the signal wire are required to be disassembled together during disassembly. The magnetostatic shield structural member is poor in mounting manufacturability, and cannot be replaced alone, and the magnetostatic shield structural member is detached together with the electrode fixing structure during replacement.

Disclosure of Invention

The utility model aims to at least solve the problem that the existing electromagnetic water meter has installation defects in shielding measures adopted for magnetic field and electric field interference. The aim is achieved by the following technical scheme:

the utility model provides an electronic water meter, which comprises a main body and a shell, wherein the main body is provided with a guide pipe, two coils are symmetrically arranged on the outer peripheral surface of the guide pipe, four electrodes which are uniformly distributed at intervals are arranged on the peripheral surface of the guide pipe, two of the electrodes correspondingly penetrate through the coils, the other two of the electrodes correspondingly are arranged between the two coils, and the shell is arranged on the guide pipe and is used for covering the electrodes; further comprises:

a first shielding assembly having a first magnetic shield and a second magnetic shield spliced to form a shielding layer wrapped outside the coil, the shielding layer having a relief hole through which the electrode passes;

the second shielding assembly comprises an electrode shielding seat and an electrode shielding cover, the electrode shielding seat is sleeved on the electrode positioned between the two coils, the electrode shielding cover is installed on the electrode shielding seat, and the electrode shielding cover and the electrode shielding seat form a protection space for accommodating the electrode.

The electronic water meter comprises a main body, a shell, a first shielding component and a second shielding component. Through setting up the first shielding component that has the shielding layer, help reducing the interference of magnetic field to electronic water meter measurement, improve measuring accuracy, and the shielding layer adopts the structure that first magnetic shielding cover and second magnetic shielding cover splice to form, can simplify the installation degree of difficulty of shielding layer, improves the dismouting efficiency of shielding layer. Meanwhile, the second shielding assembly with the electrode shielding seat and the electrode shielding cover is beneficial to reducing interference of an electric field to measurement of the electronic water meter, wherein the arrangement of the electrode shielding seat is beneficial to improving the installation effect and the dismounting efficiency of the electric field shielding cover. By arranging the first shielding component and the second shielding component, the problem that installation defects exist in shielding measures adopted for magnetic field and electric field interference of the conventional electromagnetic water meter is solved.

In addition, the electronic water meter according to the utility model can also have the following additional technical characteristics:

in some embodiments of the utility model, the first shielding assembly further comprises:

a first fastener for connecting the first magnetic shield and the second magnetic shield.

a rubber layer disposed between the coil and the shielding layer;

the shielding layer compresses the rubber layer when the first magnetic shielding cover and the second magnetic shielding cover are spliced by the first fastener.

In some embodiments of the utility model, the relief hole comprises:

the number of the first avoidance holes is two, the first avoidance holes are respectively formed in the first magnetic shielding cover and the second magnetic shielding cover, and the first avoidance holes are used for avoiding the electrodes positioned between the two coils;

the second dodges the hole, the second dodges the hole by first dodge the groove on the first magnetic shielding cover with the second of second magnetic shielding cover dodges the groove concatenation and forms, the second dodges the hole and is used for dodging wear to establish the electrode on the coil.

the reinforcing layer is arranged on the inner side of the shell and is arranged at intervals with the shielding layer.

In some embodiments of the present utility model, the first magnetic shield and the second magnetic shield are each welded from a plurality of thin steel plates.

In some embodiments of the utility model, the electrode shield base includes:

the mounting part is fixed on the electrode seat of the catheter;

and the connecting part is arranged on the mounting part and is in threaded connection with the electrode shielding cover.

In some embodiments of the utility model, the mounting portion and the electrode holder are each in abutment with the electrode via an insulating spacer.

In some embodiments of the present utility model, a clamping portion is disposed on the insulating spacer, the mounting portion is located between the clamping portion and the electrode holder, and a second fastener is screwed on the electrode, and the second fastener is used for pressing the insulating spacer, so that the electrode shielding holder is fixed between the insulating spacer and the electrode holder.

In some embodiments of the present utility model, the connection portion is provided with a through hole, and the through hole is used for passing through a signal wire, so that a lug of the signal wire can be sleeved on the electrode.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic diagram of an electronic water meter according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a partial explosion structure of an electronic water meter according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a partial assembly of an electronic water meter according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 5 is an enlarged partial schematic view of B in FIG. 4;

fig. 6 is an enlarged partial schematic view of C in fig. 4.

The various references in the drawings are as follows:

1. a main body; 11. a conduit; 12. a flange;

2. a housing; 21. a first housing; 22. a second housing; 23. a flange plate; 24. a side plate;

3. a first shielding assembly; 31. a shielding layer; 311. a first magnetic shield; 312. a second magnetic shield; 313. sealing edges; 314. a mounting hole; 315. a first fastener; 316. a first avoidance hole; 317. a second avoidance hole; 32. a rubber layer; 33. a reinforcing layer;

4. an excitation system; 41. a coil; 42. an iron core; 43. silicon steel sheets; 44. an electrode;

51. a signal line; 511. a wire connection piece; 52. a liner;

6. a second shielding assembly; 61. an electrode shielding seat; 611. a mounting part; 612. a connection part; 613. perforating; 62. an electrode shield; 63. a protection space;

7. an electrode base;

8. an insulating spacer; 81. a clamping part;

91. a seal ring; 92. a gasket; 93. a special gasket; 94. a second fastener; 95. and a third fastener.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

As shown in fig. 1 to 3, according to an embodiment of the present utility model, an electronic water meter is proposed, which includes a main body 1, a housing 2, a first shield member 3, and a second shield member 6 in an overall design.

The main body 1 is provided with a guide pipe 11, two coils 41 are symmetrically arranged on the outer peripheral surface of the guide pipe 11, four electrodes 44 which are uniformly distributed at intervals are arranged on the peripheral surface of the guide pipe 11, two of the electrodes 44 correspondingly penetrate through the coils 41, the other two of the electrodes 44 correspondingly are arranged between the two coils 41, and the shell 2 is arranged on the guide pipe 11 and used for covering the electrodes 44. The first shield assembly 3 has a first magnetic shield 311 and a second magnetic shield 312, the first magnetic shield 311 and the second magnetic shield 312 being spliced into a shield layer 31 wrapped outside the coil 41, the shield layer 31 having a relief hole through which the electrode 44 passes. The second shielding assembly 6 includes an electrode shielding base 61 and an electrode shielding cover 62, the electrode shielding base 61 is sleeved on the electrode 44 positioned between the two coils 41, the electrode shielding cover 62 is mounted on the electrode shielding base 61, and the electrode shielding cover 62 and the electrode shielding base 61 form a protection space 63 for accommodating the electrode.

The electronic water meter according to this embodiment is advantageous in that the interference of the magnetic field to the measurement of the electronic water meter is reduced by providing the first shielding assembly 3 having the shielding layer 31, the measurement accuracy is improved, and the shielding layer 31 adopts the structure formed by splicing the first magnetic shielding cover 311 and the second magnetic shielding cover 312, so that the mounting difficulty of the shielding layer 31 can be simplified, and the mounting and dismounting efficiency of the shielding layer 31 can be improved. Meanwhile, the second shielding assembly 6 with the electrode shielding seat 61 and the electrode shielding cover 62 is beneficial to reducing interference of an electric field to measurement of the electronic water meter, wherein the arrangement of the electrode shielding seat 61 is beneficial to improving the installation effect and the dismounting efficiency of the electric field shielding cover. By arranging the first shielding component 3 and the second shielding component 6, the problem that installation defects exist in shielding measures adopted by the conventional electromagnetic water meter on the aspect of interference of magnetic fields and electric fields is solved.

In particular, as shown in fig. 1 to 3, the main body 1 includes a duct 11, and flanges 12 provided at both ends of the duct 11. The casing 2, the excitation system 4, the first shielding assembly 3, the second shielding assembly 6 and other components are arranged on the guide pipe 11, wherein the casing 2 is covered outside the excitation system 4, the first shielding assembly 3, the second shielding assembly 6 and other components. The housing 2 comprises a first housing 21, a second housing 22 and two side plates 24 arranged at intervals on the conduit 11, wherein the excitation system 4, the first shielding assembly 3, the second shielding assembly 6 and other components are arranged between the two side plates 24. In the present embodiment, the first casing 21 and the second casing 22 are welded to both side plates 24. The flange plate 23 is welded on the second casing 22, and the flange plate 23 can be used for communication and fixation, and is also helpful for limiting the welding positions of the first casing 21 and the second casing 22 on the side plate 24, so that the electrode 44 passing through the coil 41 can face the flange plate 23.

As shown in fig. 4 and 5, the excitation system 4 includes an iron core 42, an electrode 44, a coil 41, and a silicon steel sheet 43. Wherein, the number of the coils 41 is two, and the coils 41 are symmetrically arranged on the outer peripheral surface of the catheter 11, and a spacing distance is arranged between the two coils 41. An iron core 42 is provided in the middle of the coil 41, and a silicon steel sheet 43 can simultaneously wrap the coil 41 and the iron core 42. The number of the electrodes 44 is four, the electrodes 44 are uniformly arranged at intervals on the peripheral surface of the catheter 11, two of the electrodes 44 are correspondingly arranged on the coils 41 and penetrate through the iron cores 42 in the middle of the coils 41, the other two of the electrodes 44 are correspondingly arranged in the middle of the two coils 41, and meanwhile, the electrodes 44 can penetrate through the silicon steel sheets 43. In the present embodiment, a liner 52 is provided in the interior of the catheter 11, one end of the electrode 44 is provided with threads, the other end is provided with a baffle, and the threaded end of the electrode 44 passes through the liner 52 and the catheter 11 and is fixed to the catheter 11 in cooperation with a screw.

In this embodiment, the shielding layer 31 of the first shielding component 3 is wrapped on the outer side of the silicon steel sheet 43, so as to achieve the effect of wrapping the coil 41, thereby reducing the interference of the magnetic field on the excitation system 4. Wherein the shielding layer 31 is formed by splicing the first magnetic shield 311 and the second magnetic shield 312, in the present embodiment, the first magnetic shield 311 and the second magnetic shield 312 are each formed by welding a plurality of thin steel plates. In the present embodiment, the first magnetic shield 311 and the second magnetic shield 312 are welded of 4 layers of thin steel plates, and at the same time, the first magnetic shield 311 and the second magnetic shield 312 include, but are not limited to, non-oriented electrical steel.

As also shown in fig. 2, the first shield assembly 3 further includes a first fastener 315, the first fastener 315 for connecting the first magnetic shield 311 and the second magnetic shield 312. The arrangement of the first fastener 315 can effectively secure the splice effect of the first magnetic shield 311 and the second magnetic shield 312, and further improve the installation effect of the shield layer 31. Specifically, the first magnetic shield 311 and the second magnetic shield 312 are each of a semicircular columnar structure, the seal edges 313 are provided at both ends of the first magnetic shield 311 and the second magnetic shield 312, and the seal edges 313 are provided with mounting holes 314, in this embodiment, the first fasteners 315 are provided as bolts and nuts, so that the difficulty in splicing the first magnetic shield 311 and the second magnetic shield 312 can be reduced, and the disassembly is convenient, and the fastening effect is good.

In some embodiments of the present utility model, the avoidance holes include a first avoidance hole 316 and a second avoidance hole 317, where the number of the first avoidance holes 316 is two, as shown in fig. 2 and 4, the first avoidance holes 316 are opened on the first magnetic shielding cover 311 and the second magnetic shielding cover 312, and the first avoidance holes 316 are used to avoid the electrode 44 located between the two coils 41, and the electrode shielding cover 62 mounted on the electrode shielding seat 61. The second avoidance hole 317 is formed by splicing a first avoidance groove on the first magnetic shield 311 and a second avoidance groove of the second magnetic shield 312. Specifically, the first avoidance groove is formed on both end portions of the first magnetic shield 311 having the seal edge 313, and correspondingly, the second avoidance groove is formed on both end portions of the second magnetic shield 312 having the seal edge 313, and the first avoidance groove and the second avoidance groove are not labeled. When the first magnetic shield 311 and the second magnetic shield 312 are spliced by the first fastener 315, the first avoidance groove and the second avoidance groove form a second avoidance hole 317, and at this time, the second avoidance hole 317 and the second avoidance hole 317 are used to avoid the electrode 44 penetrating on the coil 41.

As shown in fig. 2 and 5, the first shield assembly 3 further includes a rubber layer 32, wherein the rubber layer 32 is disposed between the coil 41 and the shield layer 31. The shield layer presses the rubber layer 32 when the first magnetic shield 311 and the second magnetic shield 312 are spliced by the first fastener 315. In the present embodiment, the rubber layer 32 is wrapped on the outer side of the silicon steel sheet 43, and when the joint of the first magnetic shielding cover 311 and the second magnetic shielding cover 312 is screwed and fastened by bolts and nuts, the first magnetic shielding cover 311 and the second magnetic shielding cover 312 press the rubber layer 32, and the rubber layer 32 is tightly attached to the outer side of the silicon steel sheet 43, so that the purpose that the shielding layer 31 is tightly attached without sliding can be achieved. Meanwhile, square and round openings are formed in the rubber layer 32, and the square and round openings are used for avoiding the electrode shielding cover 62 and the electrode 44 when being wrapped.

In some embodiments of the present utility model, the first shielding assembly 3 further includes a reinforcing layer 33, and the reinforcing layer 33 is disposed on the inner side of the housing 2 and spaced from the shielding layer 31. Specifically, a layer of carbon steel plate is welded on the inner sides of the first housing 21 and the second housing 22 to be able to be used for enhancing the effect of magnetostatic shielding, thereby further enhancing the shielding effect of the first shielding assembly 3 against the magnetic field.

As shown in fig. 4 and 6, the catheter 11 is provided with two electrode holders 7, the number of the electrode holders 7 is two, the electrode holders 7 are symmetrically arranged between the two coils 41, in this embodiment, the electrode holders 7 are welded on the catheter 11, and at this time, the electrode holders 7 are sleeved on the outer side of the electrode 44 and are abutted against the lining 52. The electrode 44 is further provided with a seal ring 91, and the seal ring 91 abuts against the electrode holder 7 to isolate the liner 52 from the external environment.

In some embodiments of the present utility model, the electrode shield 61 includes a mounting portion 611 and a connection portion 612. Wherein the mounting portion 611 is fixed to the electrode holder 7 of the catheter 11. The connection portion 612 is provided on the mounting portion 611, and the connection portion 612 is screwed with the electrode shield 62. The mode of screw connection is adopted, so that the disassembly is simple and convenient, and the manufacturing difficulty of the second shielding assembly 6 is reduced. In the present embodiment, the mounting portion 611 and the connecting portion 612 are integrally formed. As shown in fig. 6, the mounting portion 611 is annular in shape as a whole and is fitted over the outer side of the electrode 44, and the connecting portion 612 is formed at the edge of the mounting portion 611, and the connecting portion 612 extends in the axial direction of the electrode 44. External threads are formed at the free end of the connection portion 612, and internal threads are provided at the inner side of the electrode shield case 62 to achieve screw-fastening of the electrode shield case 62 and the electrode shield holder 61, and at the same time, the electrode shield case 62 and the electrode shield holder 61 can form the protection space 63 in which the partial electrode 44 is accommodated.

Specifically, the mounting portion 611 and the electrode holder 7 are each in contact with the electrode 44 via the insulating spacer 8. As also shown in fig. 6, the insulating spacer 8 is partially disposed between the electrode holder 7 and the electrode 44, and has one end abutting against the seal ring 91, thereby contributing to further improvement of the sealing effect of the electronic water meter. At the same time, a portion of the insulating spacer 8 is also provided between the mounting portion 611 and the electrode 44 to avoid the mounting portion 611 abutting against the electrode 44, affecting the operation of the electrode 44. In the present embodiment, the electrode shield holder 61 and the electrode shield cover 62 include, but are not limited to, copper, 304 stainless steel, and the like, and the insulating spacer 8 includes, but is not limited to, polysulfone-based plastic.

In some embodiments of the present utility model, the insulating spacer 8 is provided with a clamping portion 81, the mounting portion 611 is located between the clamping portion 81 and the electrode holder 7, and the electrode 44 is screwed with a second fastener 94, and the second fastener 94 is used to press against the insulating spacer 8, so that the electrode shielding holder 61 is fixed between the insulating spacer 8 and the electrode holder 7. As also shown in fig. 6, a clamping portion 81 is provided on the insulating spacer 8, and a mounting portion 611 is located between the clamping portion 81 and the electrode holder 7. A washer 92, a special washer 93, and a second fastener 94, which are sleeved on the electrode 44, are provided in this order on the side of the clamping portion 81 away from the mounting portion 611, wherein a spring is provided in the special washer 93. When the second fastening member 94 is screwed onto the electrode 44, the second fastening member 94 can press all the parts sleeved on the electrode 44, so that the rubber is deformed, and the clamping and fixing of the clamping portion 81 and the electrode holder 7 to the mounting portion 611 and the fixing of all the parts sleeved on the electrode 44 are realized.

In some embodiments of the present utility model, a through hole 613 is further formed in the connection portion 612, and the through hole 613 is used to pass through the signal line 51, so that the connection tab 511 of the signal line 51 can be sleeved on the electrode 44. Since the electrode 44 is required to be connected to the signal line 51, the tab 511 of the signal line 51 is required to be fixed to the electrode 44. Wherein, the arrangement of the perforation 613 can pass through the signal line 51, thereby achieving the purposes of conveniently assembling and disassembling the electrode shielding cover 62 without disassembling the signal line 51. In addition, a third fastener 95 is further screwed to the electrode 44, and the tab 511 can be positioned between the second fastener 94 and the third fastener 95 and fixed to the electrode 44 as the third fastener 95 is tightened.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. The electronic water meter comprises a main body and a shell, wherein the main body is provided with a guide pipe, two coils are symmetrically arranged on the outer peripheral surface of the guide pipe, four electrodes which are uniformly distributed at intervals are arranged on the peripheral surface of the guide pipe, two of the electrodes correspondingly penetrate through the coils, the other two of the electrodes correspondingly are arranged between the two coils, and the shell is arranged on the guide pipe and is used for covering the electrodes; characterized by further comprising:

2. The electronic water meter of claim 1, wherein the first shield assembly further comprises:

3. The electronic water meter of claim 2, wherein the first shield assembly further comprises:

a rubber layer disposed between the coil and the shielding layer;

4. The electronic water meter of claim 3, wherein the relief hole comprises:

5. The electronic water meter of claim 1, wherein the first shield assembly further comprises:

6. The electronic water meter of claim 1, wherein the first magnetic shield and the second magnetic shield are each welded from a plurality of steel sheets.

7. The electronic water meter of claim 1, wherein the electrode shield mount comprises:

the mounting part is fixed on the electrode seat of the catheter;

8. The electronic water meter of claim 7, wherein the mounting portion and the electrode mount are each in abutment with the electrode via an insulating spacer.

9. The electronic water meter of claim 8, wherein the insulating spacer is provided with a clamping portion, the mounting portion is located between the clamping portion and the electrode holder, and the electrode is screwed with a second fastener, and the second fastener is used for pressing the insulating spacer, so that the electrode shielding holder is fixed between the insulating spacer and the electrode holder.

10. The electronic water meter of claim 9, wherein the connection portion is provided with a through hole, and the through hole is used for passing through a signal wire, so that a lug of the signal wire is sleeved on the electrode.