CN220153637U - Electrode assembly and electromagnetic flowmeter equipped with same - Google Patents
Electrode assembly and electromagnetic flowmeter equipped with same Download PDFInfo
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- CN220153637U CN220153637U CN202320059554.3U CN202320059554U CN220153637U CN 220153637 U CN220153637 U CN 220153637U CN 202320059554 U CN202320059554 U CN 202320059554U CN 220153637 U CN220153637 U CN 220153637U
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- electrode assembly
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- assembly
- electromagnetic flowmeter
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- 238000002788 crimping Methods 0.000 claims description 3
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- 229920001971 elastomer Polymers 0.000 description 8
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- 229920011301 perfluoro alkoxyl alkane Polymers 0.000 description 6
- 239000007788 liquid Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
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- 230000005674 electromagnetic induction Effects 0.000 description 2
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- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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- Measuring Volume Flow (AREA)
Abstract
The present utility model relates to an electrode assembly and an electromagnetic flowmeter equipped with the electrode assembly. The electrode assembly is used for an electromagnetic flowmeter, the electrode assembly comprises an electrode head, an insulating part, a spring, a nut and an electrode rod, a stop part is arranged at a position close to the proximal end of the electrode head, the proximal end of the electrode head is connected with the electrode rod, the electrode rod penetrates through the nut and can move longitudinally relative to the nut, the radial part of the insulating part abuts against the stop part of the electrode head, the axial part of the insulating part is sleeved outside the electrode rod, the spring is arranged between the radial part of the insulating part and the nut in a preset compression amount, and a clamping part is further arranged at the proximal end of the electrode rod, so that the electrode assembly can be integrally installed in the electromagnetic flowmeter. The electrode assembly can be assembled in advance as one assembly, and after the assembly, parts in the electrode assembly are not easy to fall off. The electrode assembly is externally mounted without special tools, and is easy to operate.
Description
Technical Field
The present utility model relates to the field of industrial meters, and in particular to a modular electrode assembly for an electromagnetic flowmeter. The utility model also relates to an electromagnetic flowmeter comprising the electrode assembly.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
The electromagnetic flowmeter is a meter for measuring the volume flow of conductive liquid, which is manufactured according to the Faraday electromagnetic induction principle. According to Faraday electromagnetic induction principle, a pair of detection electrodes are installed on the pipe wall perpendicular to the axis of the measuring pipe and magnetic force lines, when the conductive liquid moves along the axis of the measuring pipe, the conductive liquid cuts the magnetic force lines to generate induced potential, the induced potential is detected by the two detection electrodes, and the numerical value is in direct proportion to the flow velocity.
At present, for example, 8700 series electromagnetic flow meters, electrode assemblies are various and extremely complex to install, in the installation process, all parts in the electrode assemblies are scattered, workers need to take materials one by one to install, the management of the electrode assemblies and the operation requirements of the workers are high, and after the electrode assemblies are installed, the electrode assemblies cannot be detached and replaced, so that inconvenience is brought to subsequent maintenance work.
Disclosure of Invention
An object of the present utility model is to provide an electrode assembly that can be assembled in advance as one assembly, and after assembly, parts in the electrode assembly are not easily dropped, thereby being easy to install and replace.
It is also an object of the present utility model to provide an electrode assembly that can be integrally mounted to an electrode housing from the outside of an electromagnetic flowmeter, without requiring special tools, and is easy to operate.
An aspect of the present utility model provides an electrode assembly for an electromagnetic flowmeter, the electrode assembly including an electrode tip, an insulating member, a spring, a nut, and an electrode rod, a stopper portion being provided near a proximal end of the electrode tip, the proximal end of the electrode tip being connected to the electrode rod so as to transmit an electric signal measured by the electrode tip to the electrode rod, the electrode rod passing through the nut and being movable in a longitudinal direction with respect to the nut, a radial portion of the insulating member abutting against the stopper portion of the electrode tip and an axial portion of the insulating member being sheathed outside the electrode rod, the insulating member preventing the electric signal from being transmitted to members other than the electrode tip and the electrode rod, the spring being provided between the radial portion of the insulating member and the nut in a predetermined compression amount, and a catch portion being further provided at the proximal end of the electrode rod so that the electrode assembly can be mounted to the electromagnetic flowmeter as a whole.
In the electrode assembly as described above, the insulating member includes an insulating spacer as a radial portion of the insulating member and an electrode insulating tube as an axial portion of the insulating member, or the insulating member is a single piece.
In the electrode assembly as described above, the distal end of the electrode insulating tube abuts against the stopper of the electrode head.
The electrode assembly as described above further includes a stopper for limiting the stroke of the nut and guiding the spring during installation.
In the electrode assembly as described above, the stopper is a spring supporter.
In the electrode assembly as described above, the distal end of the electrode rod is provided with a connection hole, and the proximal end of the electrode tip is screw-coupled with the connection hole of the electrode rod.
In the electrode assembly as described above, further comprising a pressing pad provided on the radial portion of the insulating member for preventing the radial portion of the insulating member from being deformed.
In the electrode assembly as described above, the stopper portion has a disk shape.
In the electrode assembly as described above, the clamping portion includes a clamp spring groove and a clamp spring provided in the clamp spring groove.
In the electrode assembly as described above, the snap spring can abut against the boss 264 protruding upward from the nut for preventing loose falling-off of the part.
The utility model also provides an electromagnetic flowmeter, which comprises a body and a lining, wherein a fluid cavity is formed in the body, fluid to be detected flows through the fluid cavity, electrode shells are oppositely arranged on two sides of the body, and the electrode shells are correspondingly arranged according to the electrode assemblies.
In the electromagnetic flowmeter described above, the body is a stainless steel pipe.
In the electromagnetic flowmeter described above, the inner liner is formed with an orifice at the electrode housing, the electrode tip of the electrode assembly is inserted from the orifice, and the distal end of the electrode tip protrudes into the fluid chamber.
In an electromagnetic flowmeter as described above, the stop abuts against the liner, thereby sealing the orifice during measurement.
In the electromagnetic flowmeter described above, the downward projecting skirt of the nut is connected to the electrode housing.
The modular electrode assembly of the present utility model has the following characteristics that the modular electrode assembly is suitable for PFA (perfluoroalkoxyalkane) lined or rubber lined electromagnetic flowmeters. For PFA liners, it is necessary to inject into the electrode housing through a mold at the time of injection; for the rubber lining, rubber needs to be preloaded into the electrode housing prior to the vulcanization process, and after vulcanization, the rubber in the electrode housing forms an integral lining with the rubber in the stainless steel tube.
The electrode assembly can be assembled in advance as an assembly, and after the assembly, parts in the electrode assembly are not easy to fall off.
The electrode assembly needs to be externally mounted to the electrode case through threads, and is easy to operate without special tools.
Drawings
Embodiments of the utility model will hereinafter be described, by way of example only, with reference to the accompanying drawings, in which like features or elements are indicated with like reference numerals and in which:
FIG. 1 shows an axial cross-sectional view of an electromagnetic flow meter with a modular electrode assembly according to the present utility model installed;
fig. 2 shows an exploded perspective view of a modular electrode assembly according to the present utility model;
fig. 3 shows a partial sectional view of the modular electrode assembly according to the present utility model in a state of being mounted to an electromagnetic flowmeter.
Detailed Description
The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, like reference numerals refer to the same or like parts and features. The drawings are merely schematic representations, not necessarily showing specific dimensions and proportions of the various embodiments of the utility model, the relative details or structure of the various embodiments of the utility model, which may be shown in exaggerated form in the particular figures or specific parts of the drawings.
Fig. 1 shows an axial cross-section of an electromagnetic flowmeter fitted with a modular electrode assembly according to the utility model. Electromagnetic flowmeter 100 includes a body 110 and a liner 120. As shown, the body 110 is optionally a stainless steel tube. Inside the body 110 is a fluid chamber 130. The fluid to be tested flows through the fluid chamber 130. The electrode case 140 is provided opposite to both sides of the body 110. The electrode assemblies 200 are correspondingly mounted in the respective electrode cases 140. The electrode housing 140 defines an electrode cavity 150 therein. As described in detail below, the electrode tip of the electrode assembly protrudes through an aperture in the body 110 into the fluid chamber 130 and slightly beyond the liner 120. The liner 120 is a PFA liner or a rubber liner such as Neoprene or Linatex (r) rust preventive latex. The PFA liner or rubber liner is suitable for the electrode assembly 200. The PFA liner is injected into the inner wall of the body 110 and the electrode cavity 150 via a mold. The rubber lining is then adhered to the inner wall of the body 110 and the electrode cavity 150 by vulcanization.
Fig. 2 shows an exploded perspective view of a modular electrode assembly 200 according to the present utility model. As shown, the modular electrode assembly 200 includes an electrode head 210, an insulating spacer 220, a crimping pad 230, a spring support 240, a spring 250, a nut 260, an electrode insulating tube 270, an electrode rod 280, and a snap spring 290.
Fig. 3 shows a partial sectional view of the modular electrode assembly 200 according to the present utility model in a state of being mounted to an electromagnetic flowmeter. As shown in fig. 2 and 3, after the inner liner 120 is formed on the body 110 by injection molding, the electrode case 140 is interference-fitted to the inner liner portion outside the body 110, and the orifice 122 is formed through the inner liner 120. When the electrode assembly 200 of the present utility model is mounted on the electrode housing 140, the electrode tip 210 of the electrode assembly 200 positioned in the electrode cavity 150 is inserted from the orifice 122 and the distal end 212 of the electrode tip 210 protrudes into the fluid cavity 130 for measuring the flow rate.
The specific structure of the electrode assembly 200 is described below. The electrode head 210 is provided with a stop 216 near the proximal end 214 of the electrode head 210. The stopper 216 has a disk shape, for example. When in an installed state, the stop 216 abuts against the liner 120, thereby sealing the aperture 122 during measurement.
The distal end of the electrode shaft 280 is provided with a connection hole 282, and the proximal end 214 of the electrode head 210 is threadedly connected with the connection hole 282 of the electrode shaft 280. Those skilled in the art will appreciate that electrode tip 214 can be connected to electrode shaft 280 in other ways as well. Both the electrode tip 210 and the electrode shaft 280 are made of metal so that an electrical signal measured from the distal end 212 of the electrode tip 210 is transmitted to the proximal end of the electrode shaft 280. The electrode rod 280 passes through the nut 260 and is movable in a longitudinal direction with respect to the nut 260. In particular, the electrode rod 280 passes through the nut 260 from the center of the nut 260. The proximal end of electrode shaft 280 is provided with a signal aperture 284. The signal hole 284 is used to connect with a signal line and draw out the measured electrical signal.
For efficient transmission of signals, insulation is provided to electrically isolate electrode stem 280 and electrode head 210 from other components. The insulator includes an insulator spacer 220, the insulator spacer 220 acting as a radial portion of the insulator against the stop 216 of the electrode head 210. The insulator may further include an electrode insulator tube 270, the electrode insulator tube 270 being sleeved outside the electrode rod 280 as an axial portion of the insulator, thereby electrically insulating the electrode rod 280 from the spring support 240, the spring 250, the nut 260, and the like. Optionally, the distal end of the electrode insulator tubing 270 abuts the stop 216 of the electrode tip 210. Together, the insulating spacer 220 and the electrode insulating tube 270 prevent the transmission of electrical signals to components other than the electrode head 210 and the electrode stem 280. Alternatively, the insulating spacer 220 as the radial portion and the electrode insulating tube 270 as the axial portion may be formed as an integral insulator.
A pressing pad 230 is also provided on top of the insulating pad 220. The pressing pad 230 serves to prevent the insulating pad 220 from being deformed. The spring 250 is disposed between the squab sheet 230 and the nut 260 with a predetermined amount of compression.
A spring supporter 240 as a limiting means is further provided between the pressing pad 230 and the nut 260, and is sleeved outside the electrode insulating tube 270 and inside the spring 220, for limiting the stroke of the nut 260 and guiding the spring 250 during installation when the nut 260 is screw-coupled to the electrode case 140.
A catch is also provided at the proximal end of electrode shaft 280. The catch includes a clip spring slot 286 and a clip spring 290 disposed in the clip spring slot 286. The snap spring 290 is able to abut against an upwardly projecting boss 264 from the nut 260. The snap springs 290 serve to prevent loose falling-off of parts, thereby assembling the electrode assembly 200 into a unitary assembly. In this way, the electrode assembly 200 serves as a modular assembly for convenient operation and management. In addition, the detachable structure of the electrode assembly is convenient for later maintenance.
Specifically, when the electrode assembly 200 is mounted, the downwardly protruding skirt 262 of the nut 260 is screw-coupled to the electrode case 140. Those skilled in the art will appreciate that the nut 260 can also be attached to the electrode housing 140 in other ways (e.g., welded, interference fit, snap fit, etc.). At this time, the nut 260 applies pressure to the electrode tip 210 via the spring 250, the pressing pad 230, and the insulating spacer 220, pressing the electrode tip 210 against the liner 120, thereby ensuring that the electrode tip 210 is always protruded outside the liner. The mounted electrode assembly 200 is substantially positioned in the electrode cavity 150 sealed by the electrode case 140 of the nut 260 stage, and thus invasion of foreign substances can be prevented.
The electrode assembly 200 of the present utility model can be easily installed simply by inserting the electrode tip 210 into the opening 122 in the liner and attaching the nut 260 to the electrode casing 140.
If the electrode tip 210 needs to be replaced, the nut 260 is detached from the electrode shell 140, the electrode tip 210 is taken out from the liner 210, and after the electrode tip is replaced with a new electrode tip, the nut 260 is screwed onto the electrode shell 140, so that the replacement of components is facilitated.
Herein, exemplary embodiments of the present utility model have been described in detail, but it should be understood that the present utility model is not limited to the specific embodiments described and illustrated in the above. Those skilled in the art will be able to make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. All such modifications and variations are intended to be within the scope of the present utility model. Moreover, all the components described herein may be replaced by other technically equivalent elements.
Claims (10)
1. An electrode assembly (200), the electrode assembly (200) being for an electromagnetic flowmeter (100), characterized in that the electrode assembly (200) comprises an electrode head (210), an insulating member, a spring (250), a nut (260) and an electrode rod (280), the electrode head (210) being provided with a stop (216) near a proximal end (214) of the electrode head (210), the proximal end (214) of the electrode head (210) being connected to the electrode rod (280), the electrode rod (280) passing through the nut (260) and being movable in a longitudinal direction with respect to the nut (260), a radial portion of the insulating member abutting against the stop (216) of the electrode head (210) and an axial portion of the insulating member being sleeved outside the electrode rod (280), the spring (250) being arranged around the axial portion of the insulating member in a predetermined amount of compression and between the radial portion of the insulating member and the nut (260), a snap-in portion being further provided at the proximal end of the electrode rod (280) so that the electromagnetic flowmeter (100) as a whole is mountable.
2. The electrode assembly (200) of claim 1, wherein the insulator comprises an insulating spacer (220) as a radial portion of the insulator and an electrode insulator tube (270) as an axial portion of the insulator.
3. The electrode assembly (200) of claim 2, further comprising a spring support (240) that is positioned outside the electrode insulator tube and inside the spring (250) for limiting travel of the nut (260) and guiding the spring (250) during installation.
4. The electrode assembly (200) of claim 1, wherein a connection hole (282) is provided at a distal end of the electrode stem (280), the proximal end (214) of the electrode head (210) being threadedly connected with the connection hole (282) of the electrode stem (280).
5. The electrode assembly (200) of claim 1, further comprising a crimping pad (230), the crimping pad (230) disposed on a radial portion of the insulator for preventing deformation of the radial portion of the insulator.
6. The electrode assembly (200) of claim 1, wherein the catch includes a snap spring groove (286) and a snap spring (290) disposed in the snap spring groove (286), the snap spring (290) being capable of abutting against an upwardly projecting boss (264) from the nut (260) for holding the electrode assembly together.
7. An electromagnetic flowmeter (100), characterized in that the electromagnetic flowmeter (100) comprises a body (110) and a liner (120), a fluid cavity (130) is formed in the body (110), fluid to be detected flows through the fluid cavity (130), electrode shells (140) are oppositely arranged on two sides of the body (110), and the electrode assembly (200) according to any one of claims 1 to 6 is correspondingly mounted on each electrode shell (140).
8. The electromagnetic flow meter (100) of claim 7, with the liner (120) formed with an aperture (122) at the electrode housing (140), the electrode tip (210) of the electrode assembly (200) being inserted from the aperture (122) such that a distal end (212) of the electrode tip (210) protrudes into the fluid cavity (130).
9. The electromagnetic flowmeter (100) of claim 8, wherein the stop (216) abuts the liner (120) to seal the orifice (122) during measurement.
10. The electromagnetic flowmeter (100) of claim 7, wherein the downwardly projecting skirt (262) of the nut (260) is connected to the electrode housing (140).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320059554.3U CN220153637U (en) | 2023-01-09 | 2023-01-09 | Electrode assembly and electromagnetic flowmeter equipped with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320059554.3U CN220153637U (en) | 2023-01-09 | 2023-01-09 | Electrode assembly and electromagnetic flowmeter equipped with same |
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| Publication Number | Publication Date |
|---|---|
| CN220153637U true CN220153637U (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320059554.3U Active CN220153637U (en) | 2023-01-09 | 2023-01-09 | Electrode assembly and electromagnetic flowmeter equipped with same |
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| CN (1) | CN220153637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117740087A (en) * | 2024-02-20 | 2024-03-22 | 胜利油田东强机电设备制造有限公司 | High-pressure-resistant electromagnetic flowmeter for underground oil field |
-
2023
- 2023-01-09 CN CN202320059554.3U patent/CN220153637U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117740087A (en) * | 2024-02-20 | 2024-03-22 | 胜利油田东强机电设备制造有限公司 | High-pressure-resistant electromagnetic flowmeter for underground oil field |
| CN117740087B (en) * | 2024-02-20 | 2024-04-26 | 胜利油田东强机电设备制造有限公司 | High-pressure-resistant electromagnetic flowmeter for underground oil field |
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