CN219084148U - Electromagnetic water meter - Google Patents
Electromagnetic water meter Download PDFInfo
- Publication number
- CN219084148U CN219084148U CN202222571211.3U CN202222571211U CN219084148U CN 219084148 U CN219084148 U CN 219084148U CN 202222571211 U CN202222571211 U CN 202222571211U CN 219084148 U CN219084148 U CN 219084148U
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- water meter
- insulating
- magnetic
- electromagnetic water
- honeycomb duct
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 49
- 238000009413 insulation Methods 0.000 claims abstract description 16
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 7
- 229920002530 polyetherether ketone Polymers 0.000 claims description 7
- 238000005259 measurement Methods 0.000 abstract description 14
- 230000005389 magnetism Effects 0.000 abstract description 9
- 230000003068 static effect Effects 0.000 abstract description 7
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Measuring Volume Flow (AREA)
Abstract
The application provides an electromagnetic water meter, comprising: the insulation honeycomb duct is provided with a magnetic circuit structure; the magnetic shielding structure is arranged on the outer side of the side wall of the insulating honeycomb duct and forms a magnetic shielding space with the insulating honeycomb duct, and the magnetic circuit structure is positioned in the magnetic shielding space; the grounding flange is respectively arranged at two ends of the insulating honeycomb duct. The utility model provides an electromagnetic water meter encloses into magnetism shielding space through the magnetism shielding structure that the cover was located insulating honeycomb duct and insulating honeycomb duct, makes the magnetic circuit that is arranged in magnetism shielding space not disturbed by static magnetic field, improves measurement accuracy, and the magnetic field that magnetic circuit itself produced can not cause the interference to adjacent instrument, also can produce the electric potential when liquid flows in the pipeline, interferes measuring result, sets up ground flange direct and liquid contact, makes liquid and ground equipotential, compares in traditional ground ring, and ground flange is bigger with liquid area of contact, more is favorable to eliminating the interference, guarantees measuring result accuracy.
Description
Technical Field
The utility model relates to the technical field of measuring devices, in particular to an electromagnetic water meter.
Background
The electromagnetic water meter is an instrument for measuring the volume flow of the conductive liquid, which is manufactured by utilizing Faraday electromagnetic induction law, and the measurement is not influenced by the change of the density, viscosity, pressure and conductivity of the fluid, has high performance and high precision, can be measured in two directions, and has various output types.
The electromagnetic water meter mainly comprises a flow sensor and a converter. The sensor of the pipeline type electromagnetic water meter is provided with exciting coils on the upper and lower parts of the measuring tube, a magnetic field is generated to pass through the measuring tube after the power is on, a pair of electrodes are arranged on the inner wall of the measuring tube and are in contact with liquid, induced potential is led out and sent to the converter, a flow signal provided by the sensor of the electromagnetic water meter for the converter is a potential difference, the signal is of a microvolts level, the signal is small, the interference of static magnetic field and the like is easy to occur in actual measurement, and certain influence can be caused on the measurement precision.
Disclosure of Invention
In view of the above, the present utility model is directed to an electromagnetic water meter for solving the related problems mentioned in the background art.
Based on the above object, the present utility model provides an electromagnetic water meter comprising:
the insulation flow guide pipe is provided with a magnetic circuit structure;
the magnetic shielding structure is arranged on the outer side of the side wall of the insulating honeycomb duct and forms a magnetic shielding space with the insulating honeycomb duct, and the magnetic circuit structure is positioned in the magnetic shielding space;
the grounding flange is respectively arranged at two ends of the insulating honeycomb duct.
Optionally, the magnetic shielding structure includes: a shield and a flange sleeved outside the insulation flow guide pipe;
the two ends of the shield are fixedly connected with one flange respectively, and the two flanges are fixedly connected with the outer wall of the insulation flow guide pipe;
the shield, the flange and the insulation honeycomb duct enclose the magnetic shielding space.
Optionally, the side wall of the insulating honeycomb duct is provided with a plurality of holes.
Optionally, the magnetic circuit structure includes: a coil, an electrode, and a yoke;
the coil is arranged on the outer side of the side wall of the insulating honeycomb duct, and two ends of the coil are respectively provided with a magnetic yoke;
one end of the electrode is in plug-in fit with a hole in the side wall of the insulating guide pipe, penetrates through the coil and the magnetic yoke, and the other end of the electrode extends into the magnetic shielding space.
Optionally, the grounding flange is provided with coaxial liquid guiding hole and pipe groove, the pipe groove diameter is greater than the liquid guiding hole diameter, the pipe groove with insulating honeycomb duct grafting cooperation.
Optionally, a sealing ring is arranged between the insulating honeycomb duct and the duct.
Optionally, the electromagnetic shielding device further comprises a shell, wherein the shell is sleeved outside the insulating guide pipe and fixedly arranged outside the grounding flange, the shell, the grounding flange and the insulating guide pipe enclose an accommodating space, and the electromagnetic shielding structure is positioned in the accommodating space.
Optionally, at least one of the flanges is provided with a plurality of indentations.
Optionally, the diameter of the liquid guide hole is the same as the inner diameter of the insulating guide pipe.
Optionally, the insulating honeycomb duct is an insulating honeycomb duct made of polyether-ether-ketone.
According to the electromagnetic water meter provided by the utility model, the magnetic shielding structure sleeved on the insulating guide pipe is arranged, so that the magnetic shielding structure and the insulating guide pipe enclose a magnetic shielding space, the magnetic circuit structure in the magnetic shielding space is not interfered by a static magnetic field, the measurement accuracy is improved, meanwhile, a magnetic field generated by the magnetic circuit structure in the magnetic shielding space cannot interfere with an adjacent meter, potential is generated when liquid flows in a pipeline to interfere a measurement result, the grounding flange is arranged to be directly contacted with the liquid, the liquid is in equipotential with the ground, and compared with a traditional grounding ring, the contact area of the grounding flange and the liquid is larger, interference caused by the flowing of the liquid is eliminated, and the accuracy of the measurement result is ensured.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of an electromagnetic water meter according to an embodiment of the present utility model;
fig. 2 is a cross-sectional view of a grounding flange according to an embodiment of the present utility model.
Reference numerals: 1. a grounding flange; 2. a seal ring; 3. a flange; 4. a shield; 5. a housing; 6. a coil; 7. an electrode; 8. a yoke; 9. insulating honeycomb duct; 10. a liquid guiding hole; 11. a tube groove.
Detailed Description
The present utility model will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present utility model should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application pertains. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
The flow signal provided by the sensor of the electromagnetic water meter to the converter is a potential difference, belongs to a microvolts level, has smaller signal, is easy to be interfered by static magnetic field and the like in actual measurement, and can have a certain influence on the measurement precision.
The in-process discovery that realizes this application makes magnetism shielding structure and insulating honeycomb duct enclose into magnetism shielding space through setting up the magnetism shielding structure that the cover was located to the cover, make the magnetic circuit structure that is located magnetism shielding space not receive static magnetic field interference, improve the measurement accuracy, the magnetic field that the magnetic circuit structure itself that is located magnetism shielding space produced can not cause the interference to adjacent instrument simultaneously, also can produce the electric potential when liquid flows in the pipeline, interference measuring result, set up the direct and liquid contact of ground flange, make liquid and ground equipotential, compare in traditional ground ring, the ground flange is bigger with liquid area of contact, more be favorable to eliminating the interference because of the liquid flows, guarantee measuring result accuracy.
The following describes the technical solution of the present application in detail by means of specific embodiments in combination with fig. 1 to 2.
The present application provides an electromagnetic water meter, referring to fig. 1, comprising: the insulation honeycomb duct 9, is provided with the magnetic circuit structure on the insulation honeycomb duct 9; the magnetic shielding structure is arranged on the outer side of the side wall of the insulating guide pipe 9, and forms a magnetic shielding space with the insulating guide pipe 9, and the magnetic circuit structure is positioned in the magnetic shielding space; the two ends of the insulating guide pipe 9 are respectively provided with a grounding flange 1.
The magnetic circuit structure arranged on the insulating guide pipe 9 generates a magnetic field after being electrified, and collects tiny induced electromotive force generated by cutting magnetic force lines when the conductive fluid passes through the magnetic field.
The magnetic shielding structure and the insulating guide pipe 9 jointly form a magnetic shielding space, so that the magnetic circuit structure is not interfered by external magnetic fields, and meanwhile, the magnetic field generated by the magnetic circuit structure is not diffused, and the influence on adjacent instruments is also ensured.
The grounding flanges 1 arranged at the two ends of the insulating guide pipe 9 are directly contacted with liquid, and meanwhile, the grounding flanges 1 are directly grounded, so that the liquid and the ground are equipotential, and compared with a traditional grounding ring, the grounding flanges 1 and the liquid are larger in contact area, and interference can be eliminated more favorably.
In some embodiments, as shown in fig. 1, the magnetic shielding structure includes: a shield 4 and a flange 3 sleeved outside the insulation guide pipe 9; two ends of the shield 4 are respectively and fixedly connected with a flange 3, and both flanges 3 are fixedly connected with the outer wall of the insulation flow guide pipe 9; the shield 4, the flange 3 and the insulation guide pipe 9 enclose a magnetic shielding space.
The flange 3 and the shield 4 are made of magnetism isolating materials, the flange 3 and the shield 4 encircle the insulation guide pipe 9, the flange 3, the shield 4 and the insulation guide pipe 9 enclose an annular magnetic shielding space, a magnetic circuit structure located in the magnetic shielding space is not interfered by external static magnetic fields, measurement accuracy is improved, a magnetic field generated by the magnetic circuit structure cannot be diffused outside the magnetic shielding space, magnetic fields of other adjacent electromagnetic instruments cannot be overlapped, use of the adjacent electromagnetic instruments cannot be influenced, and the electromagnetic water meter and other electromagnetic instruments can be used in parallel.
In some embodiments, as shown in fig. 1, the insulated nozzle 9 side wall is provided with a plurality of holes.
According to the use position of the electrode or the sensor, a plurality of holes are formed on the side wall of the insulating guide pipe 9, and the electrode or the sensor is installed so as to be in direct contact with the liquid in the insulating guide pipe 9.
In some embodiments, as shown in fig. 1, the magnetic circuit structure includes: a coil 6, an electrode 7, and a yoke 8; the coil 6 is arranged on the outer side of the side wall of the insulating guide pipe 9, and two ends of the coil 6 are respectively provided with a magnetic yoke 8; one end of the electrode 7 is in plug-in fit with a hole on the side wall of the insulating guide pipe 9, penetrates through the coil 6 and the magnetic yoke 8, and the other end of the electrode extends into the magnetic shielding space.
The coil 6 generates a magnetic field after being electrified, liquid in the insulating guide pipe 9 flows in the magnetic field to generate induced potential, the electrode 7 collects the generated induced potential and transmits the induced potential to the converter, the magnitude of the induced potential is in direct proportion to the flow rate of the liquid and the intensity of the magnetic field, the intensity of the magnetic field is in direct proportion to the number of turns of the coil 6 and the electrified current, the number of turns of the coil 6 and the electrified current are both constant during actual measurement, the flow rate of the liquid can be determined according to the induced potential collected by the electrode 7, the sectional area of the inner pipe of the insulating guide pipe 9 is a constant value, the volume flow can be obtained by multiplying the sectional area of the inner pipe of the insulating guide pipe 9 by the flow rate of the liquid, and the measurement of the flow rate of the liquid is realized.
The magnetic yoke 8 is a soft magnetic material which does not generate a magnetic field and only transmits magnetic force lines in a magnetic circuit, and the purpose of the magnetic yoke 8 arranged at two ends of the coil 6 is to restrain the magnetic leakage of the coil 6 from diffusing outwards.
In some embodiments, as shown in fig. 2, the grounding flange 1 is provided with a coaxial liquid guiding hole 10 and a pipe groove 11, the diameter of the pipe groove 11 is larger than that of the liquid guiding hole 10, and the pipe groove 11 is in plug-in fit with the insulating guide pipe 9.
The traditional ground connection flange only has a hole that is used for holding the honeycomb duct, the flange is not direct with liquid contact, generally in the outside external ground ring of flange, by the direct and liquid contact of ground ring, the ground connection flange 1 of this application sets up liquid guide hole 10 and tube groove 11 simultaneously, when holding the honeycomb duct again, ground connection flange 1 and liquid direct contact, need not to set up the ground ring outward, through liquid guide hole 10 and liquid direct contact, make the liquid and the ground equipotential of business turn over electromagnetic water gauge, reduce electromagnetic water gauge axial dimension when eliminating the interference.
In some embodiments, as shown in fig. 1 and 2, a sealing ring 2 is provided between the insulated guiding pipe 9 and the pipe groove 11.
By arranging the sealing ring 2 between the insulating guide pipe 9 and the pipe groove 11, the phenomenon that liquid enters the electromagnetic water meter from a gap between the insulating guide pipe 9 and the pipe groove 11 to damage the electromagnetic water meter is avoided.
In some embodiments, as shown in fig. 1, the electromagnetic water meter further includes a housing 5, where the housing 5 is sleeved outside the insulating guide pipe 9 and is fixedly arranged outside the grounding flange 1, the housing 5, the grounding flange 1 and the insulating guide pipe 9 enclose an accommodating space, and the magnetic shielding structure is located in the accommodating space.
The shell 5 mainly aims at preventing the damage to the inside caused by external impact, and meanwhile, the shell 5 can be made of stainless steel materials, so that the requirements of a user on corrosion resistance, wear resistance and attractive appearance of the outer surface of the electromagnetic water meter are met. The shell 5 and the grounding flange 1 are welded to form a closed space, so that external substances are prevented from entering, and in order to meet special application scenes, such as underwater environments, the accommodating space can be filled and sealed with insulating glue, and short circuit caused by liquid carrying out a magnetic circuit structure is avoided.
In some embodiments, as shown in fig. 1, at least one flange 3 is provided with a plurality of indentations.
The signals of the magnetic field generated by energizing the coil 6 in the magnetic circuit structure and the induced potential collected by the electrode 7 are transmitted to the converter through the lead, and then a notch is required to be arranged on at least one flange 3 to enable the lead to pass through so as to transmit information and energy.
In some embodiments, as shown in fig. 1, the diameter of the pilot hole 10 is the same as the inner diameter of the insulated pilot pipe 9.
The diameter of the liquid guide hole 10 is the same as the inner diameter of the insulating guide pipe 9, so that stable transition between the liquid guide hole 10 and the insulating guide pipe 9 is ensured when liquid flows, if the diameter of the liquid guide hole 10 is inconsistent with the inner diameter of the insulating guide pipe 9, the liquid can continuously strike the junction of the liquid guide hole 10 and the insulating guide pipe 9 when flowing, static electricity is easier to generate in the liquid collision process compared with normal flowing, interference is generated on measurement, metal fatigue at the junction is also aggravated, and cracks are easy to generate.
In some embodiments, as shown in fig. 1, the insulated conduit 9 is an insulated conduit 9 made of polyetheretherketone.
The structure of current honeycomb duct is mostly that inside insulating material's of metal pipe and metal pipe lining two parts are constituteed, and the lining turn-ups position produces the phenomenon of glue opening easily after long-time use, influences electromagnetic water gauge's leakproofness. The insulating honeycomb duct 9 that this application insulating honeycomb duct 9 was made for polyether ether ketone, traditional scheme sets up insulating lining's purpose is that the induced signal voltage is prevented by the tubular metal resonator short circuit, polyether ether ketone is polymer, have good insulating and antistatic properties, use polyether ether ketone to make the honeycomb duct, need not to set up the lining in inside, solve traditional lining and easily open the problem that the gluey influence electromagnetic water gauge leakproofness for a long time, polyether ether ketone material still has good corrosion-resistant, ageing resistance, wear-resisting, hydrolysis resistance simultaneously, mechanical strength is high, be fit for making the honeycomb duct.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the application (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the utility model, the steps may be implemented in any order and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity.
The embodiments of the utility model are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present utility model should be included in the scope of the present utility model.
Claims (10)
1. An electromagnetic water meter, comprising:
the insulation flow guide pipe is provided with a magnetic circuit structure;
the magnetic shielding structure is arranged on the outer side of the side wall of the insulating honeycomb duct and forms a magnetic shielding space with the insulating honeycomb duct, and the magnetic circuit structure is positioned in the magnetic shielding space;
the grounding flange is respectively arranged at two ends of the insulating honeycomb duct.
2. The electromagnetic water meter of claim 1, wherein the magnetic shielding structure comprises: a shield and a flange sleeved outside the insulation flow guide pipe;
the two ends of the shield are fixedly connected with one flange respectively, and the two flanges are fixedly connected with the outer wall of the insulation flow guide pipe;
the shield, the flange and the insulation honeycomb duct enclose the magnetic shielding space.
3. The electromagnetic water meter of claim 1, wherein the insulated draft tube side wall is provided with a plurality of holes.
4. The electromagnetic water meter of claim 2, wherein the magnetic circuit structure comprises: a coil, an electrode, and a yoke;
the coil is arranged on the outer side of the side wall of the insulating honeycomb duct, and two ends of the coil are respectively provided with a magnetic yoke;
one end of the electrode is in plug-in fit with a hole in the side wall of the insulating guide pipe, penetrates through the coil and the magnetic yoke, and the other end of the electrode extends into the magnetic shielding space.
5. The electromagnetic water meter of claim 1, wherein the ground flange is provided with a coaxial liquid guide hole and a tube groove, the diameter of the tube groove is larger than that of the liquid guide hole, and the tube groove is in plug-in fit with the insulating guide tube.
6. The electromagnetic water meter of claim 5, wherein a seal ring is disposed between the insulated draft tube and the tube slot.
7. The electromagnetic water meter of claim 1, further comprising a housing, wherein the housing is sleeved outside the insulating draft tube and fixedly arranged outside the grounding flange, wherein the housing, the grounding flange and the insulating draft tube enclose an accommodating space, and the magnetic shielding structure is positioned in the accommodating space.
8. The electromagnetic water meter of claim 2, wherein at least one of the flanges is provided with a plurality of notches.
9. The electromagnetic water meter of claim 5, wherein the pilot hole diameter is the same as the insulating draft tube inner diameter.
10. The electromagnetic water meter of claim 1, wherein the insulated draft tube is an insulated draft tube made of polyetheretherketone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222571211.3U CN219084148U (en) | 2022-09-26 | 2022-09-26 | Electromagnetic water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222571211.3U CN219084148U (en) | 2022-09-26 | 2022-09-26 | Electromagnetic water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219084148U true CN219084148U (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222571211.3U Active CN219084148U (en) | 2022-09-26 | 2022-09-26 | Electromagnetic water meter |
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| CN (1) | CN219084148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116734934A (en) * | 2023-08-11 | 2023-09-12 | 德阳市新泰自动化仪表有限公司 | Compact electromagnetic flowmeter, installation method and flow measuring method |
-
2022
- 2022-09-26 CN CN202222571211.3U patent/CN219084148U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116734934A (en) * | 2023-08-11 | 2023-09-12 | 德阳市新泰自动化仪表有限公司 | Compact electromagnetic flowmeter, installation method and flow measuring method |
| CN116734934B (en) * | 2023-08-11 | 2023-11-14 | 德阳市新泰自动化仪表有限公司 | Compact electromagnetic flowmeter, installation method and flow measuring method |
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Address after: 300112 No. 6-6, Yan'an Road, Nankai District, Tianjin Patentee after: Tianjin Suner Technology Co.,Ltd. Address before: 300112 No. 6-6, Yan'an Road, Nankai District, Tianjin Patentee before: TIANJIN SURE INSTRUMENT SCIENCE & TECHNOLOGY Co.,Ltd. |