CN216925676U

CN216925676U - Electromagnetic water meter flow and built-in integrated pressure measuring device

Info

Publication number: CN216925676U
Application number: CN202123235057.4U
Authority: CN
Inventors: 邓立群; 李哲浩; 白福群
Original assignee: Shenzhen Anso Measurement & Control Instruments Co ltd
Current assignee: Shenzhen Tuoan Trust Internet Of Things Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-07-08
Anticipated expiration: 2031-12-20

Abstract

The application provides an electromagnetic water meter flow and built-in integrated pressure measuring device, which comprises a flow measuring structure and a pressure measuring structure; the flow measurement structure comprises a measurement conduit and a shell, wherein the measurement conduit is provided with a pressure guide hole which is radially communicated, and the shell is sleeved outside the measurement conduit; the pressure measuring structure comprises a pressure sensor, the pressure sensor is arranged on the outer end face of the pressure leading hole and is positioned between the measuring guide pipe and the shell, and the pressure sensor is used for measuring the pressure of liquid flowing through the measuring guide pipe; the pressure measurement structure comprises an air duct, one end of the air duct is communicated with the pressure sensor, and the other end of the air duct penetrates through the shell and can introduce external atmospheric pressure outside the shell. In this application, when electromagnetic water meter flow and built-in integrative pressure measurement device were transported to the different geographical position of atmospheric pressure, can directly introduce outside atmospheric pressure to pressure sensor outside the shell through the other end of air duct for the numerical value that pressure sensor measured has introduced outside atmospheric pressure.

Description

Electromagnetic water meter flow and built-in integrated pressure measuring device

Technical Field

The application relates to the technical field of fluid measurement, in particular to an electromagnetic water meter flow and built-in integrated pressure measurement device.

Background

A pressure gauge is required to be arranged on the water pipe to measure the water pressure so as to measure the water supply pressure in the water pipe; meanwhile, an electromagnetic flowmeter/electromagnetic water meter flow and a built-in integrated pressure measuring device are also required to be arranged on the water pipe for flow measurement. To this end, electromagnetic water meter flow and built-in integrated pressure measurement devices have appeared in the prior art, and pressure gauges are integrated in electromagnetic flow meters to realize the measurement of water pipe pressure and flow.

There are two quantities of pressure and pressure in different units in physics, but it is customary in engineering to refer to pressure as pressure. The pressure gauge is actually a pressure gauge, and the unit on the pressure gauge is KPa. In practice there is an atmospheric pressure, so the value displayed on the pressure gauge is the actual pressure inside the container minus the external atmospheric pressure, which needs to be added when physical calculations need to be made. This causes a problem that the electromagnetic water meter needs to be corrected according to the local atmospheric pressure when the electromagnetic water meter is transported to all over the country.

SUMMERY OF THE UTILITY MODEL

The application provides an electromagnetism water gauge flow and built-in integrative pressure measurement device to solve the electromagnetism water gauge flow that exists among the prior art and built-in integrative pressure measurement device and need correspond local atmospheric pressure and carry out the technical problem of rectifying.

In order to solve the above problems, the embodiment of the present application provides a technical solution that: a flow and built-in integrated pressure measuring device of an electromagnetic water meter comprises a flow measuring structure and a pressure measuring structure;

the flow measurement structure comprises a measurement conduit and a shell, wherein the measurement conduit is provided with a pressure guide hole which is radially communicated, and the shell is sleeved outside the measurement conduit;

the pressure measuring structure comprises a pressure sensor, the pressure sensor is arranged on the outer end face of the pressure leading hole and is positioned between the measuring conduit and the shell, and the pressure sensor is used for measuring the pressure of liquid flowing through the measuring conduit;

the pressure measurement structure further comprises an air duct, one end of the air duct is communicated with the pressure sensor, and the other end of the air duct penetrates through the shell and can introduce external atmospheric pressure outside the shell.

According to the electromagnetic water meter flow and built-in integrative pressure measurement device that this application embodiment provided, through the setting of flow measurement structure and pressure measurement structure for this electromagnetic water meter flow and built-in integrative pressure measurement device possess pressure measurement and flow measurement's function simultaneously, and the function is diversified, and equipment integration practices thrift the cost on the whole, saves space, the installation of being convenient for. Simultaneously, through the setting of air duct, air duct one end and pressure sensor intercommunication, the air duct other end runs through the shell and can introduce outside atmospheric pressure outside the shell, then when this electromagnetic water meter flow and built-in integrative pressure measurement device are transported to the geographical position of atmospheric pressure difference and go the during operation, can directly introduce outside atmospheric pressure outside the shell to pressure sensor through the other end of air duct, make the numerical value that pressure sensor measured introduce outside atmospheric pressure, when carrying out the physics calculation, need not to add outside atmospheric pressure, the trouble of staff's correction atmospheric pressure has been reduced. In addition, through installing pressure sensor on the outer terminal surface of the pressure hole that draws of measuring pipe, can practice thrift pressure sensor's occupation space, but the pressure of direct measurement measuring pipe internal water, simultaneously, itself needs processing electrode hole on measuring pipe, increases again on electrode hole's basis and draws the pressure hole, and its processing is convenient. And locate pressure sensor in the installation space, can avoid pressure sensor and interconnecting link to touch the damage in construction or use to prolong pressure sensor's life, practiced thrift the cost.

In a possible design, the electromagnetic water meter flow and built-in integrated pressure measuring device further comprises a pressure guiding box, the pressure guiding box is installed on the outer side of the shell, the other end of the air guide tube is arranged in the pressure guiding box, and a box cover capable of being rapidly disassembled and assembled is arranged on the pressure guiding box.

In one possible design, the flow measuring structure further comprises a magnetic circuit system, an electrode and a converter, wherein the magnetic circuit system is installed outside the measuring conduit and used for generating a uniform alternating magnetic field, the electrode is arranged on the side wall of the measuring conduit and used for leading out an induced potential signal proportional to a measured value, and the converter is installed outside the shell and used for amplifying and converting the induced potential signal led out by the electrode into a standard signal;

the pressure sensor is electrically connected with the converter, and the converter is used for displaying the pressure value detected by the pressure sensor.

In one possible design, the other end of the air duct is arranged in the converter, and the converter at least comprises an air hole for communicating the other end of the air duct with the external atmospheric pressure.

In one possible design, the converter includes:

the other end of the air guide pipe is arranged in the cylinder body, and the cylinder body is provided with at least one air hole for communicating the other end of the air guide pipe with external atmospheric pressure;

the control board is arranged in the cylinder body and is respectively and electrically connected with the pressure sensor and the electrode;

and the display is connected with the control board and used for displaying the pressure value and the flow value.

In one possible design, the barrel has a display window, the display side of the display facing the display window; the display window is provided with a first air hole for communicating the other end of the air guide tube with external atmospheric pressure, and a first cover plate is detachably covered outside the display window.

In a possible design, a second air hole is formed in the side wall of the barrel body, the other end of the air guide tube is communicated with the external atmospheric pressure through the second air hole, and a second cover plate detachably arranged on the second air hole is arranged at the outer end of the second air hole.

In one possible design, a connecting seat is arranged on the outer side of the shell, the converter is installed in the connecting seat, the other end of the air guide tube is arranged in the connecting seat, a third air hole for communicating the other end of the air guide tube with external atmospheric pressure is formed in the side wall of the connecting seat, and a detachable third cover plate is arranged on the outer cover of the third air hole.

In one possible design, the measuring conduit is provided with a mounting seat on the outer side, and the pressure sensor is mounted on the mounting seat;

the mounting seat is provided with a mounting hole, the mounting hole is communicated with the pressure leading hole, and a probe of the pressure sensor extends into the mounting hole.

In one possible design, the converter further comprises a communication module and a positioning module, and the communication module and the positioning module are respectively electrically connected with the control board;

the communication module comprises a 4G module, a GPRS module and an NB-LOT module;

the positioning module comprises a GPS positioning module and a Beidou positioning module.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a flow and built-in integrated pressure measuring device of an electromagnetic water meter according to an embodiment of the present application;

FIG. 2 is a schematic illustration of the installation of the pressure sensor of FIG. 1;

FIG. 3 is a schematic circuit diagram of the flow and built-in integrated pressure measuring device of the electromagnetic water meter of FIG. 1;

FIG. 4 is a schematic longitudinal sectional view of the electromagnetic water meter of FIG. 1 showing the flow rate and the position of the signal electrode corresponding to the integrated pressure measuring device;

fig. 5 is a schematic structural diagram of a flow and built-in integrated pressure measuring device of an electromagnetic water meter according to another embodiment of the present application;

fig. 6 is a schematic structural diagram of a flow and built-in integrated pressure measuring device of an electromagnetic water meter according to another embodiment of the present application.

Reference numerals: 10. a flow measurement structure; 11. a measurement catheter; 110. a pressure guide hole; 111. a signal electrode hole; 112. a ground electrode hole; 12. a magnetic circuit system; 13. an electrode; 131. a signal electrode; 132. a ground electrode; 14. a liner; 15. a housing; 151. a through hole; 16. a converter; 161. a barrel; 162. a control panel; 163. a display; 164. a first cover plate; 165. a communication module; 166. a positioning module; 167. a second air hole; 17. a second signal line; 18. a ground line; 19. an excitation wire; 20. a pressure measurement structure; 21. A pressure sensor; 22. an air duct; 23. a first signal line; 24. a mounting seat; 241. mounting holes; 30. A connecting seat; 31. and a third air hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "inner," "outer," "upper," "bottom," "front," "back," and the like, when used in the orientation or positional relationship indicated in FIG. 1, are used solely for the purpose of facilitating a description of the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

It should be noted that the same reference numerals are used to denote the same components or parts in the embodiments of the present application, and for the same parts in the embodiments of the present application, only one of the parts or parts may be given the reference numeral, and it should be understood that the reference numerals are also applicable to the other same parts or parts.

The embodiment of the application provides an electromagnetism water gauge flow and built-in integrative pressure measurement device, can be used for measuring the pressure and the flow of water pipe water-logging simultaneously through this electromagnetism water gauge flow and built-in integrative pressure measurement device.

Referring to fig. 1, the electromagnetic water meter flow and built-in integrated pressure measuring device includes a flow measuring structure 10 and a pressure measuring structure 20.

Wherein the flow measuring structure 10 can be an electromagnetic flow meter or an electromagnetic water meter and a built-in integrated pressure measuring device. Flow measurement structure 10 includes a measurement conduit 11, a magnetic circuit 12, an electrode 13, a liner 14, a housing 15, and a transducer 16. The function of the measuring conduit 11 is to let the measured conductive liquid pass through, the magnetic circuit 12 is arranged outside the measuring conduit 11 and is used for generating a uniform alternating current magnetic field, the electrode 13 is arranged on the side wall of the measuring conduit 11 and is used for leading out an induced potential signal in proportion to the measured conductive liquid, the lining 14 is sleeved on the inner side wall of the measuring conduit 11 and is used for preventing the measuring conduit 11 from being corroded, the shell 15 is sleeved outside the measuring conduit 11 to protect the magnetic circuit 12 and the electrode 13 and isolate the interference of an external magnetic field, the converter 16 is arranged on the shell 15 and is electrically connected with the electrode 13, and the converter 16 is used for amplifying the induced potential signal generated by the fluid flow and converting the induced potential signal into a uniform standard signal and inhibiting a main interference signal.

Referring to fig. 2, the measurement duct 11 is provided with a pressure guiding hole 110, the pressure guiding hole 110 radially penetrates through a sidewall of the measurement duct 11 along the measurement duct 11, the housing 15 is sleeved on the measurement duct 11, and an installation space is formed by the inner sidewall of the housing 15 and the outer peripheral wall of the measurement duct 11.

The pressure measuring structure 20 includes a pressure sensor 21, the pressure sensor 21 is installed on the outer end face of the pressure guiding hole 110 and located between the measuring pipe 11 and the housing 15, that is, the pressure sensor 21 is installed in the installation space, the pressure sensor 21 is used for measuring the pressure of the liquid flowing through the measuring pipe 11, the pressure sensor 21 is electrically connected with the converter 16 and sends the detected pressure signal to the converter 16, and the converter 16 is used for converting the pressure signal detected by the pressure sensor 21 into a numerical signal and displaying the numerical signal.

The pressure measuring structure 20 further comprises an air duct 22, one end of the air duct 22 is communicated with the pressure sensor 21, and the other end of the air duct 22 penetrates through the casing 15 and can introduce external atmospheric pressure outside the casing 15. Correspondingly, the casing 15 is provided with a through hole 151, and the other end of the air duct 22 passes through the through hole 151 to extend out of the casing 15.

The utility model provides an electromagnetism water gauge flow and built-in integrative pressure measurement device through flow measurement structure 10 and pressure measurement structure 20's setting for this electromagnetism water gauge flow and built-in integrative pressure measurement device possess pressure measurement and flow measurement's function simultaneously, and the function is diversified, and equipment integration practices thrift the cost on the whole, saves space, the installation of being convenient for. Meanwhile, through the arrangement of the air duct 22, one end of the air duct 22 is communicated with the pressure sensor 21, the other end of the air duct 22 penetrates through the shell 15 and can introduce external atmospheric pressure outside the shell 15, when the electromagnetic water meter flow and the built-in integrated pressure measuring device are transported to different geographical positions of atmospheric pressure to work, the external atmospheric pressure can be directly introduced outside the shell 15 to the pressure sensor 21 through the other end of the air duct 22, the numerical value detected by the pressure sensor 21 is introduced into the external atmospheric pressure, when physical calculation is carried out, the external atmospheric pressure does not need to be added, and the trouble of workers in correcting the atmospheric pressure is reduced. In addition, through installing pressure sensor 21 on the outer terminal surface of the pressure guiding hole 110 of measuring pipe 11, can practice thrift pressure sensor 21's occupation space, can directly measure the pressure of the water in measuring pipe 11, simultaneously, need process the electrode hole on measuring pipe 11 itself, increase pressure guiding hole 110 again on the basis of the electrode hole, its processing is convenient. The pressure sensor 21 is arranged in the installation space, so that the pressure sensor 21 and the connecting circuit can be prevented from being touched and damaged in the construction or use process, the service life of the pressure sensor 21 is prolonged, and the cost is saved.

In one embodiment, the other end of the air duct 22 is disposed in the converter 16, the converter 16 at least includes an air hole for communicating the other end of the air duct 22 with the external atmospheric pressure, so that the other end of the air duct 22 can be stored and protected to prevent the other end of the air duct 22 from being damaged during transportation or transportation, and when the converter 16 is opened, the external atmospheric pressure can be introduced through the other end of the air duct 22 by a worker.

Specifically, referring to fig. 1 and 3, the converter 16 includes a cylinder 161, a control board 162 and a display 163. The other end of the air duct 22 is arranged in the cylinder 161, and the cylinder 161 is provided with at least one air hole for communicating the other end of the air duct 22 with the external atmospheric pressure; the control board 162 is arranged in the cylinder 161, and the control board 162 is electrically connected with the pressure sensor 21 and the electrode 13 respectively; the display 163 is connected to the control board 162, and the display 163 displays the pressure value and the flow value.

In this embodiment, the barrel 161 has a one-sided display window, and the display side of the display 163 faces the display window. The display window is provided with a first air hole for communicating the other end of the air duct 22 with the external atmospheric pressure, and a first cover plate 164 is detachably covered on the display window. After installation on site, the air duct 22 can introduce local atmospheric pressure by opening the first cover plate 164 during the debugging process, so that the pressure sensor 21 will use the atmospheric pressure brought by the local altitude as a reference, and the pressure value displayed by the rear-end display 163 will be relatively accurate. The operation is simple, and the air duct 22 is not required to be additionally provided with a mounting structure, so that the structure is simple.

In one embodiment, the measuring tube 11 is provided with a mounting seat 24 on the outside, and the pressure sensor 21 is mounted on the mounting seat 24. Specifically, the mounting seat 24 is attached to the outer peripheral wall of the measurement duct 11, a mounting hole 241 communicated with the pressure guiding hole 110 is formed in the mounting seat 24, the pressure sensor 21 is mounted at the mounting hole 241, and the probe of the pressure sensor 21 extends into the mounting hole 241, so as to measure the pressure of the water in the measurement duct 11. Because the periphery wall of the measuring catheter 11 is an arc-shaped surface, and the mounting hole 241 suitable for mounting the pressure sensor 21 is formed in the measuring catheter 11 difficultly, the mounting seat 24 is arranged, the inner side of the mounting seat 24 is attached to the periphery wall of the measuring catheter 11, the outer side of the mounting seat 24 is attached to the pressure sensor 21 in a sealing mode, the sealing performance of the measuring catheter 11 can be guaranteed, and meanwhile the pressure sensor 21 can be mounted conveniently.

In one embodiment, the mounting seat 24 may be attached to the outer peripheral wall of the measurement catheter 11 by welding, gluing, or the like.

In one embodiment, referring to fig. 1 and 4, the electrode 13 includes a signal electrode 131 and a ground electrode 132, the measurement conduit 11 has a signal electrode hole 111 and a ground electrode hole 112, the signal electrode hole 111 is used for installing the signal electrode 131, and the ground electrode hole 112 is used for installing the ground electrode 132. The front and rear side walls of the measurement duct 11 are respectively provided with a signal electrode hole 111, and the upper and lower side walls of the measurement duct 11 are respectively provided with a ground electrode hole 112.

The pressure measuring structure 20 further includes four first signal lines 23, one end of each first signal line 23 is connected to the pressure sensor 21, and the other end of each first signal line 23 is connected to the control board 162, and is configured to transmit a pressure signal detected by the pressure sensor 21 to the control board 162.

The flow rate measurement structure 10 further includes two second signal lines 17, one ends of the two second signal lines 17 are respectively connected to the two signal electrodes 131, and the other ends of the two second signal lines 17 are respectively connected to the control board 162, and are configured to transmit the induced potential signal detected by the electrode 13 to the control board 162.

The flow rate measurement structure 10 further includes two ground lines 18, one ground line 18 is connected to the two ground electrodes 132 at both ends, respectively, and the other ground line 18 is connected to one of the ground electrodes 132 at one end and the control board 162 at the other end.

Flow measurement structure 10 further includes three field lines 19, and three field lines 19 are connected to the tertiary coil of magnetic circuit 12 and control board 162, respectively.

The pressure guiding hole 110 and the grounding electrode hole 112 are located at the same height, and the pressure guiding hole 110, the magnetic circuit 12 and the grounding electrode hole 112 are arranged at intervals along the axial direction of the measuring conduit 11, so that the pressure sensor 21 can avoid the magnetic circuit 12, and the wiring mode of the first signal line 23 can be consistent with that of the second signal line 17.

Referring to fig. 3, the converter 16 further includes a communication module 165 and a positioning module 166, the communication module 165 and the positioning module 166 are respectively electrically connected to the control board 162, and the communication module 165 includes a 4G module, a GPRS module and an NB-LOT module, so that the communication functions of the electromagnetic water meter flow and the built-in integrated pressure measurement device are increased, and the signal problem of each industrial and mining environment is solved. In addition, an antenna is also provided corresponding to the communication module 165, and the antenna can be an integrated or split antenna to enhance signals according to field requirements.

The positioning module 166 comprises a GPS positioning module 166 and a Beidou positioning module 166, the positioning function of the flow of the electromagnetic water meter and the built-in integrated pressure measuring device is added, the accurate positioning can be realized, and the alarm is given when the flow of the electromagnetic water meter and the position of the built-in integrated pressure measuring device are changed.

In another embodiment of the present application, please refer to fig. 5, the display window is only used for displaying the pressure value of the flow meter, a second air hole 167 is formed in the side wall of the cylinder 161, the opening area of the second air hole 167 is far smaller than the opening area of the display window, the second air hole 167 is used for communicating the other end of the air duct with the external atmospheric pressure, and a second cover plate detachably covering the second air hole 167 is disposed at the outer end of the second air hole 167. During field debugging, only need open the second apron can introduce outside atmospheric pressure to the other end of air duct 22 on, can also set first apron 164 into anti-disassembly structure simultaneously, prevent that the user from taking apart first apron 164 with maliciously revising converter 16 internal fittings, and because the opening of second gas pocket 167 is very little, user's hand can't stretch into with the internal fittings that changes converter 16 through second gas pocket 167.

In another embodiment of the present application, the other end of the air duct 22 is not disposed in the converter 16, but a pressure guiding box (not shown) is additionally introduced into the air duct 22, the pressure guiding box is installed outside the cylinder 161, the other end of the air duct 22 is disposed in the pressure guiding box, and a box cover capable of being quickly disassembled and assembled is disposed on the pressure guiding box. After the pressure sensor 21 is installed on site, the pressure sensor will use the atmospheric pressure brought by the local altitude as a reference, and the pressure value displayed by the later converter 16 will be more accurate as long as the box cover is opened and the air duct 22 can introduce the local atmospheric pressure during the debugging process.

In another embodiment of the present application, referring to fig. 6, instead of introducing the other end of the air duct 22 into the converter 16, a connecting seat 30 may be provided outside the housing 15, the converter 16 is mounted on the connecting seat 30, the other end of the air duct 22 is provided in the connecting seat 30, a third air hole 31 is provided on a side wall of the connecting seat 30, and a third cover plate is detachably provided on the outer cover of the third air hole 31. During field debugging, only need open the second apron can introduce outside atmospheric pressure to the other end of air duct 22 on, install converter 16 itself simultaneously and just need set up connecting seat 30, consequently need not to introduce in addition and draw the pressure box, also need not to modify converter 16's structure simultaneously, its simple structure, and convenient operation.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A flow and built-in integrated pressure measuring device of an electromagnetic water meter is characterized by comprising a flow measuring structure and a pressure measuring structure;

2. The electromagnetic water meter flow and internal integrated pressure measuring device according to claim 1, further comprising a pressure guiding box, wherein the pressure guiding box is mounted outside the housing, the other end of the air duct is disposed in the pressure guiding box, and a box cover capable of being quickly disassembled and assembled is disposed on the pressure guiding box.

3. An electromagnetic water meter flow and built-in integrated pressure measuring device as claimed in claim 1, wherein said flow measuring structure further comprises a magnetic circuit system, an electrode and a converter, said magnetic circuit system is installed outside said measuring conduit and is used for generating a uniform alternating magnetic field, said electrode is installed on the side wall of said measuring conduit and is used for leading out an induced potential signal proportional to the measured value, and said converter is installed outside said housing and is used for amplifying and converting the induced potential signal led out by said electrode into a standard signal;

4. An electromagnetic water meter flow and built-in integrated pressure measuring device according to claim 3, wherein the other end of said air duct is disposed in said converter, said converter including at least one air hole for communicating the other end of said air duct with the outside atmosphere.

5. An electromagnetic water meter flow and built-in integrated pressure measurement device as claimed in claim 4, wherein said transducer comprises:

6. The electromagnetic water meter flow and built-in integrated pressure measuring device of claim 5, wherein said barrel has a display window, a display side of said display facing said display window; the display window is provided with a first air hole for communicating the other end of the air guide tube with external atmospheric pressure, and a first cover plate is detachably covered outside the display window.

7. An electromagnetic water meter flow and built-in integrated pressure measuring device according to claim 5, wherein a second air hole is formed in a side wall of the cylinder, the second air hole is used for communicating the other end of the air duct with the external atmospheric pressure, and a second cover plate detachably covering the second air hole is arranged at the outer end of the second air hole.

8. An electromagnetic water meter flow and built-in integrated pressure measuring device as claimed in claim 3, wherein a connecting seat is provided on an outer side of said housing, said converter is mounted on said connecting seat, the other end of said air duct is provided in said connecting seat, a third air hole for communicating the other end of said air duct with an external atmospheric pressure is provided on a side wall of said connecting seat, and a third cover plate is detachably provided on an outer cover of said third air hole.

9. An electromagnetic water meter flow and built-in integrated pressure measuring device according to any one of claims 1 to 8, wherein a mounting seat is provided on an outer side of the measuring pipe, and the pressure sensor is mounted on the mounting seat;

10. The electromagnetic water meter flow and built-in integrated pressure measuring device according to claim 5, wherein the converter further comprises a communication module and a positioning module, the communication module and the positioning module are respectively electrically connected with the control board;