CN111504395A - Rotary plate type magnetic flowmeter - Google Patents
Rotary plate type magnetic flowmeter Download PDFInfo
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- CN111504395A CN111504395A CN202010380757.3A CN202010380757A CN111504395A CN 111504395 A CN111504395 A CN 111504395A CN 202010380757 A CN202010380757 A CN 202010380757A CN 111504395 A CN111504395 A CN 111504395A
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- rotating plate
- magnet
- type magnetic
- magnetic flowmeter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
- G01F1/28—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/006—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus characterised by the use of a particular material, e.g. anti-corrosive material
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention relates to the field of flow measurement, in particular to a rotating plate type magnetic flowmeter. A rotating plate type magnetic flowmeter is provided with an anti-corrosion coating; the rotating plate type magnetic flowmeter comprises a meter body, a bolt, a bracket and an integrating instrument; the integrating instrument is used for calculating and displaying flow; the integrating instrument is fixed on the watch body through a support by using a bolt. The invention makes the rotating plate in the meter body rotate through the change of the flow speed, the magnet is arranged on the rotating plate, the magnet with the same magnetic pole is arranged on the corresponding meter body, the distance between the pair of magnets is changed through the rotation of the rotating plate, so that the change of the repulsive force is changed, the change of the magnetic force and the change of the flow are linear, the flow is measured through measuring the change of the magnetic force, the pressure loss of the flowmeter is small, the energy consumption of the flowmeter is small, and the flowmeter has more excellent corrosion resistance and service life.
Description
Technical Field
The invention relates to the field of flow measurement, in particular to a rotating plate type magnetic flowmeter.
Background
The existing magnetic flowmeter is developed according to the principle of normal tension first electromagnetic induction and electromagnetic induction. A trapezoidal cylinder induction generator vertical to the flow direction of a measured medium is placed in a meter shell, magnetic steel at the downstream of the induction generator generates a strong magnetic field, magnetic lines of force pass through a pipeline, when the medium flows through the induction generator, two lines of the medium are alternately separated and released at the two sides of the downstream of the induction generator to be processed in a staggered mode, electromotive force with the same frequency is induced by cutting the magnetic lines of force, and the separation frequency of fluid is directly proportional to flow rate by extremely detecting electric signals within a certain speed range.
The existing pressure type flowmeter mostly adopts a differential pressure type flowmeter, namely, the differential pressure principle generated by an internal structure is utilized to carry out flow measurement, such as a pore plate flowmeter, a V-cone flowmeter, an Arinba flowmeter, a porous balance flowmeter and the like. Another velocity flowmeter for measuring a flow velocity is a turbine flowmeter that converts a flow velocity of a medium into mechanical rotation and generates a pulse signal by the rotation to indirectly measure a flow.
However, at present, no research on a new flowmeter formed by combining pressure and magnetic force exists, and the existing flowmeter does not solve a series of problems that the precision is low, the measurement range is narrow, the flowmeter is easy to wear and corrode, the requirement on field installation conditions is high, and the flowmeter cannot measure mixed phase flow and dirty flow.
Disclosure of Invention
In order to solve the technical problem, the invention provides a rotating plate type magnetic flowmeter which is provided with an anti-corrosion coating; the rotating plate type magnetic flowmeter comprises a meter body, a bolt, a bracket and an integrating instrument; the integrating instrument is used for calculating and displaying flow; the integrating instrument is fixed on the watch body through a support by using a bolt.
As a preferable technical scheme, a support is arranged on the watch body.
As a preferable technical scheme, a first magnet and a pressure sensor are further arranged in the watch body, the pressure sensor is connected to the support, and the first magnet is in floating close contact with the sensing surface of the pressure sensor.
As a preferable technical scheme, a hinged support is arranged below the support, and a support shaft is arranged in the hinged support.
As a preferable technical scheme, a rotating plate is arranged on the hinged support, and the rotating plate can rotate around the fulcrum.
Preferably, a second magnet is fixed to the rotating plate, and the first magnet and the second magnet are placed in opposition to each other, that is, two opposing surfaces of the first magnet and the second magnet are both N-level or both S-level.
In a preferred embodiment, the first magnet and the second magnet are disposed opposite to each other to generate a repulsive force, so that the first magnet is in contact with the pressure sensor, and the integrating device converts the pressure signal into an electrical signal of the volume flow rate according to the pressure sensor and displays and outputs the electrical signal.
As a preferred technical scheme, the support is made of a magnetic conductive material.
As a preferred technical scheme, the meter body is a circular straight pipe, the specification of the meter body is the same as that of a process pipeline, and flanges are arranged at two ends of the meter body and are used for being connected with the process pipeline.
As a preferable technical scheme, the anti-corrosion coating comprises an epoxy zinc-rich primer layer and an epoxy anti-corrosion paint layer from bottom to top.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a rotating plate type magnetic flowmeter, which rotates a rotating plate arranged in a meter body through flow velocity change, wherein magnets are arranged on the rotating plate, a magnet with the same magnetic pole is arranged on the corresponding meter body, the distance between the magnets is changed through the rotation of the rotating plate, so that the change of repulsive force is changed, the change of magnetic force and the change of flow are linear, the flow is measured through measuring the change of magnetic force, the pressure loss of the flowmeter is small, the energy consumption of the flowmeter is small, and the flowmeter has more excellent corrosion resistance and service life.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly described below, the drawings described below are only some embodiments of the present invention, and it is obvious to those skilled in the art that other drawings can be obtained based on the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic diagram of the right side view of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
the numbering in the figure is as follows:
1. a watch body; 2. a bolt; 3. a support; 4. an integrating instrument; 5. a pressure sensor; 6. a support; 7. a first magnet; 8. a hinged support; 9. a fulcrum; 10. a second magnet; 11. and (6) rotating the plate.
Detailed Description
The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments.
In order to solve the technical problem, the invention provides a rotating plate type magnetic flowmeter which is provided with an anti-corrosion coating; the rotating plate type magnetic flowmeter comprises a meter body 1, a bolt 2, a bracket 3 and an integrating instrument 4; the integrating instrument 4 is used for calculating and displaying flow; the integrating instrument 4 is fixed on the watch body 1 through a bracket 3 by a bolt 2.
Rotary plate type magnetic flowmeter
In a preferred embodiment, the watch body 1 is provided with a support 6.
In a preferred embodiment, a first magnet 7 and a pressure sensor 5 are further arranged in the watch body 1, the pressure sensor 5 is connected to the support 6, and the first magnet 7 is in floating close contact with the sensing surface of the pressure sensor 5.
The support 6 can insulate the pressure sensor 5 from damage caused by harmful or corrosive substances.
In a preferred embodiment, a hinged support 8 is arranged below the support 6, and a fulcrum 9 is arranged in the hinged support 8.
In a preferred embodiment, the hinge support 8 is provided with a rotating plate 11, and the rotating plate 11 is rotatable around the fulcrum 9.
In a preferred embodiment, a second magnet 10 is fixed to the rotating plate 11, and the first magnet 7 and the second magnet 10 are placed in an opposite manner, that is, two opposite surfaces of the first magnet 7 and the second magnet 10 are both N-level or both S-level.
In a preferred embodiment, the first magnet 7 and the second magnet 10 are placed opposite to each other to generate a repulsive force, so that the first magnet 7 contacts the pressure sensor 5, and the integrating meter 4 converts the pressure signal into an electric signal of the volume flow rate according to the pressure sensor 5 and displays and outputs the electric signal.
The repulsive force of the first magnet 7 and the second magnet 10 changes with the angle of the rotating plate along with the change of the flow velocity of the medium, the distance between the two magnets is increased when the angle alpha of the rotating plate 11 is decreased, the repulsive force is also small when the flow velocity is large, the change of the magnetic force is linear with the change of the flow rate, and the corresponding flow rate is calculated by the integrating instrument 4 according to the change of the magnetic force. The measurement of the gas can also be used for calculating the flow of the working condition by installing a temperature sensor and a pressure sensor in an auxiliary way. The pair of magnets can also ensure that the flow meter rotates the reset of the plate under different installation angles.
In a preferred embodiment, the support 6 is made of a magnetically conductive material.
In a preferred embodiment, the watch body 1 is a circular straight pipe with the same specification as the process pipeline, and flanges are arranged at two ends of the watch body for connecting with the process pipeline.
Corrosion-resistant coating
In a preferred embodiment, the anti-corrosion coating comprises an epoxy zinc-rich primer layer and an epoxy anti-corrosion paint layer from bottom to top, and the rotary plate type magnetic flowmeter is subjected to anti-corrosion treatment by the following steps:
(1) cleaning the surface of the rotary plate type magnetic flowmeter to remove oil stains and dust on the surface; (2) spraying an epoxy zinc-rich primer layer with the thickness of 5-30 mu m on the surface of the flowmeter by adopting air spraying or high-pressure airless spraying; (3) after the epoxy zinc-rich primer is completely dried, continuously spraying a solvent-free epoxy anti-rust paint layer with the thickness of 5-30 mu m on the epoxy zinc-rich primer.
The epoxy zinc rich primer of the present invention is not limited, and may be any epoxy zinc rich primer conventionally used in the art, including, but not limited to, H06-25 epoxy zinc rich primer available from Taihu lake anticorrosive materials Co., Ltd.
Solvent-free epoxy antirust paint
In a preferred embodiment, the solvent-free epoxy anticorrosive coating comprises, in parts by weight: 1-3 parts of reactive diluent, 2-5 parts of silane, 10-15 parts of curing agent, 10-20 parts of liquid phenolic resin, 40-65 parts of epoxy resin, 8-15 parts of pigment and filler and 1-6 parts of glass flake.
In a preferred embodiment, the reactive diluent is selected from one or more of butyl glycidyl ether, carboxydodecyl to tetradecyl glycidyl ether, o-tolyl glycidyl ether, octyl glycidyl ether, phenyl glycidyl ether, benzyl glycidyl ether, p-tert-butylphenyl glycidyl ether.
In a more preferred embodiment, the reactive diluent is p-tert-butylphenyl glycidyl ether.
In the research, the added reactive diluent plays a certain role in diluting the resin, so that the volume fraction of epoxy groups in the system is relatively reduced, when different reactive diluents are adopted, the inventors unexpectedly found that the flexible adhesion property of the p-tert-butylphenyl glycidyl ether is relatively better, the reactive diluent can be crosslinked with a curing agent, the curing speed of the resin can be adjusted through intermolecular force between the reactive diluent and the resin, the coating is more uniform in curing, and the anti-corrosion performance of the coating can be improved to a certain extent.
The silane is not limited in any way and may be any silane conventionally used in the art, for example, aminosilane, epoxysilane, and the like.
The curing agent is an additive which causes the resin to undergo a chemical reaction such as condensation, ring closure, addition or catalysis, so that the thermosetting resin undergoes an irreversible change process, and examples of the curing agent include, but are not limited to: bayer N3390 curing agent, hensmei polyetheramine D230 curing agent, hensmei polyetheramine D400 curing agent, hensmei polyetheramine D2000 curing agent, aksu V388 curing agent; hensman polyetheramine D230 curing agent is preferred.
In a preferred embodiment, the liquid phenolic resin is selected from
PR-967 and/or
PR-14170。
Herein, the
PR-967 and/or
PR-14170 is commercially available from Nippon sumitomo phenolic plastics, and the viscosity of the liquid phenolic resin at 25 ℃ is below 0.25 Pa.S; when such a liquid phenolic resin is combined with the following preferred epoxy resin, the viscosity of the system increases, the stable state of the coating can be ensured during curing, and the corrosion resistance can be improved, while the absence of the liquid phenolic resin does not provide a coating structure with excellent corrosion resistance.
In a preferred embodiment, the epoxy resin is a bisphenol a epoxy resin; bisphenol A Epoxy resins having an Epoxy equivalent value of 450 to 600 and a volatility value of 1% or less are more preferable as examples of bisphenol A Epoxy resins, and examples of such bisphenol A Epoxy resins include, but are not limited to, Epoxy resins such as Bluestar Epoxy E-21, Bluestar Epoxy WSR601, Bluestar Epoxy 0191.
The Bluestar Epoxy E-21, Bluestar Epoxy WSR601 and Bluestar Epoxy 0191 can be purchased from China blue Star.
As the solvent-free anticorrosive paint, bisphenol A Epoxy resin with low Epoxy value is very suitable for the solvent-free anticorrosive paint, and the coating curing speed is proper when, for example, Bluestar Epoxy E-21, Bluestar Epoxy WSR601 and Bluestar Epoxy 0191 are adopted, and the molecular weight of the resin of the brands is relatively large in practical application, a proper amount of active diluent is required to be added, and the active diluent excessively reduces the coating performance, so that the inventor in the research finds that the reaction activity of the Epoxy resin can be improved after the preferable liquid phenolic resin is added by accident, the molecular weight of the resin is close to that of the resin, the flexibility of the coating can be improved, and the anticorrosive performance is optimal.
Usually, the shrinkage rate of the photo-cured coating is increased by more reactive diluents, and the inorganic pigment and filler cannot be added, but the inorganic pigment and filler can be uniformly dispersed in the system without obviously improving the viscosity and the coating performance by selecting the specific reactive diluents and reducing the using amount of the reactive diluents through the synergistic effect with a proper resin matrix.
The pigment and filler of the present invention includes, but is not limited to, titanium dioxide, organic bentonite, nano-magnesium oxide, zinc oxide, carbon black, and calcium carbonate. More preferably, the carbon black and the titanium dioxide are selected, and the mass ratio of the carbon black to the titanium dioxide is (2-5): 1; and most preferably the carbon black has a particle diameter of 25 to 35nm and a specific surface area of 60 to 90m2(ii)/g; the particle size of the titanium dioxide is 0.15-0.25 μm.
For example, the preferred carbon black includes, but is not limited to, Texas pigment carbon black CO L OUR B L ACK S160 (particle size: 25nm, specific surface area: 90 m)2(g), Printex 35 (particle diameter of 31nm, specific surface area of 65 m)2Perg), PRINTEX 140V (particle diameter of 29nm, specific surface area of 90 m)2/g)。
For example, the preferable titanium dioxide includes, but is not limited to, the Pennogy titanium dioxide TRONOX CR-826 (particle size 0.20 μm), TRONOX CR-828 (particle size 0.19 μm), and TRONOX CR-880 (particle size 0.23 μm).
According to the invention, titanium dioxide and carbon black are used as pigment fillers, the particle size and the respective ratio have large influence on the performance of the coating, and when the content of the pigment fillers is excessive, the viscosity of the system is increased, so that the anti-corrosion performance of the coating is influenced; the inventor unexpectedly finds that when the particle size is in the preferable range of the invention, the mass ratio of the titanium dioxide to the carbon black is (2-5): 1, the two probably have good synergistic action, and carbon black with smaller particle size can be well dispersed in the gaps of the titanium dioxide, so that some film-forming substances are extruded, the viscosity is reduced, and simultaneously, the permeation path of a corrosive medium can be further extended after the carbon black reacts with glass flakes, so that the corrosion resistance of the coating is improved.
The raw material of the glass flake is generally medium alkali No. 5 glass, and the specific gravity of the medium alkali No. 5 glass is 2.5g/cm3(ii) a Bulk density<1.0g/cm3The thickness is 3-10 μm.
The present invention is described in detail below with reference to examples, which are provided for the purpose of further illustration only and are not to be construed as limiting the scope of the present invention, and the insubstantial modifications and adaptations thereof by those skilled in the art based on the teachings of the present invention will still fall within the scope of the present invention.
Example 1
Embodiment 1 provides a rotating plate type magnetic flowmeter, on which an anti-corrosion coating is provided; the rotating plate type magnetic flowmeter comprises a meter body 1, a bolt 2, a bracket 3 and an integrating instrument 4; the integrating instrument 4 is used for calculating and displaying flow; the integrating instrument 4 is fixed on the watch body 1 through a bracket 3 by a bolt 2.
The watch body 1 is provided with a support 6; the meter comprises a meter body 1, a first magnet 7, a pressure sensor 5, a support 6, a magnetic conductive material and a second magnet 7, wherein the first magnet 7 and the pressure sensor 5 are arranged in the meter body 1; a hinged support 8 is arranged below the support 6, and a fulcrum shaft 9 is arranged in the hinged support 8; the hinged support 8 is provided with a rotating plate 11, and the rotating plate 11 can rotate around the fulcrum shaft 9; a second magnet 10 is fixed on the rotating plate 11, and the first magnet 7 and the second magnet 10 are oppositely arranged, namely two opposite surfaces of the first magnet 7 and the second magnet 10 are both N-level or both S-level;
the first magnet 7 and the second magnet 10 are oppositely arranged to generate repulsive force so that the first magnet 7 is contacted with the pressure sensor 5, and the integrating instrument 4 converts the pressure signal into an electric signal of volume flow according to the pressure sensor 5 and displays and outputs the electric signal; the repulsive force of the first magnet 7 and the second magnet 10 changes with the angle of the rotating plate along with the change of the flow velocity of the medium, the distance between the two magnets is increased when the angle alpha of the rotating plate 11 is decreased, the repulsive force is also small when the flow velocity is large, the change of the magnetic force is linear with the change of the flow rate, and the corresponding flow rate is calculated by the integrating instrument 4 according to the change of the magnetic force. The measurement of the gas can also be used for calculating the flow of the working condition by installing a temperature sensor and a pressure sensor in an auxiliary way. The pair of magnets can also ensure that the flow meter rotates the reset of the plate under different installation angles.
The meter body 1 is a circular straight pipe, the specification of the meter body is the same as that of a process pipeline, and flanges are arranged at two ends of the meter body and are used for being connected with the process pipeline.
The anti-corrosion coating comprises an epoxy zinc-rich primer layer and an epoxy anti-rust paint layer from bottom to top, and the anti-rust treatment is carried out on the rotary plate type magnetic flowmeter through the following steps:
(1) cleaning the surface of the rotary plate type magnetic flowmeter to remove oil stains and dust on the surface; (2) spraying an epoxy zinc-rich primer layer with the thickness of 15 microns on the surface of the flowmeter by adopting air spraying or high-pressure airless spraying; (3) after the epoxy zinc-rich primer is completely dried, continuously spraying a solvent-free epoxy anti-rust paint layer with the thickness of 20 mu m on the epoxy zinc-rich primer; wherein the epoxy zinc-rich primer is H06-25 epoxy zinc-rich primer purchased from Taihu lake anticorrosive materials Co., Ltd in Wuxi city;
the solvent-free epoxy antirust paint layer comprises the following components in parts by weight: 2 parts of reactive diluent, 3.5 parts of silane, 13 parts of curing agent, 15 parts of liquid phenolic resin, 51 parts of epoxy resin, 11.5 parts of pigment and filler and 4 parts of glass flake.
The active diluent is p-tert-butyl phenyl glycidyl ether; the silane is aminosilane KH 550; the curing agent is a Hensman polyetheramine D230 curing agent; the liquid phenolic resin is
PR-967, the epoxy resin is Bluestar epoxy E-21, the pigment filler is the mixture of carbon black and titanium dioxide in the mass ratio of 4: 1, the carbon black is Texaco pigment carbon black CO L OURB L ACK S160, and the titanium dioxide is Tenuo titanium dioxide TRONOX CR-826.
The corrosion resistance of the flow meters of the examples was measured before rust prevention treatment (without corrosion prevention coating) and after rust prevention treatment (with corrosion prevention coating), and the results are shown in table 1 below.
TABLE 1
Example 2
The active diluent is p-tert-butyl phenyl glycidyl ether; the silane is aminosilane KH 550; the curing agent is a Hensman polyetheramine D230 curing agent; the liquid phenolic resin is
PR-967, the epoxy resin is Bluestar epoxy E-21, the pigment filler is the mixture of carbon black and titanium dioxide in the mass ratio of 4: 1, the carbon black is Texaco pigment carbon black CO L OURB L ACK S160, and the titanium dioxide is Tenuo titanium dioxide TRONOX CR-826.
Example 3
The reactive diluent is butyl glycidyl ether; the silane is aminosilane KH 550; the curing agent is a Hensman polyetheramine D230 curing agent; the liquid phenolic resin is
PR-967, the Epoxy resin is Bluestar Epoxy E-21, the pigment filler is the mixture of carbon black and titanium dioxide in the mass ratio of 4: 1, the carbon black is Texaco pigment carbon black CO L OUR B L ACKS160, and the titanium dioxide is Canuo titanium dioxide TRONOX CR-826.
Example 4
The active diluent is p-tert-butyl phenyl glycidyl ether; the silane is aminosilane KH 550; the curing agent is a Hensman polyetheramine D230 curing agent; the liquid phenolic resin is
PR-967, the epoxy resin is Bluestar epoxy E-21, the pigment filler is the mixture of carbon black and titanium dioxide in the mass ratio of 4: 1, the carbon black is Texaco pigment carbon black CO L OURB L ACK S160, and the titanium dioxide is Tenuo titanium dioxide TRONOX CR-826.
Example 5
The active diluent is p-tert-butyl phenyl glycidyl ether; the silane is aminosilane KH 550; the curing agent is a Hensman polyetheramine D230 curing agent; the liquid phenolic resin is
PR-3700I, the Epoxy resin is Bluestar Epoxy E-21, the pigment filler is the mixture of carbon black and titanium dioxide with the mass ratio of 4: 1, the carbon black is Texaco pigment carbon black CO L OUR B L ACK S160, and the titanium dioxide is the United states Teno titanium dioxide TRONOX CR-826.
Example 6
The above-mentionedThe active diluent is p-tert-butyl phenyl glycidyl ether; the silane is aminosilane KH 550; the curing agent is a Hensman polyetheramine D230 curing agent; the liquid phenolic resin is
PR-967, the epoxy resin is Bluestar epoxy E-13 (epoxy equivalent 714-833g/eq), the pigment filler is the mixture of carbon black and titanium dioxide in the mass ratio of 4: 1, the carbon black is Degussa pigment carbon black CO L OUR B L ACK S160, and the titanium dioxide is U.S. Teno titanium dioxide TRONOX CR-826.
Example 7
The active diluent is p-tert-butyl phenyl glycidyl ether; the silane is aminosilane KH 550; the curing agent is a Hensman polyetheramine D230 curing agent; the liquid phenolic resin is
PR-967, the epoxy resin is Bluestar epoxy E-21, the pigment filler is the mixture of carbon black and titanium dioxide in the mass ratio of 4: 1, the carbon black is Texaco pigment carbon black CO L OURB L ACK S160, and the titanium dioxide is U.S. DuPont titanium dioxide R900 (particle size of 0.41 mu m).
Example 8
The active diluent is p-tert-butyl phenyl glycidyl ether; the silane is aminosilane KH 550; the curing agent is a Hensman polyetheramine D230 curing agent; liquid phenolThe aldehyde resin is
PR-967; the epoxy resin is Bluestar epoxy E-21; the pigment filler is carbon black and titanium dioxide in a mass ratio of 4: 1, mixing; the carbon black was Mitsubishi #3400B (particle diameter: 21nm, specific surface area: 165 m)2(iv)/g); the titanium dioxide is American Teno titanium dioxide TRONOX CR-826.
Example 9
The active diluent is p-tert-butyl phenyl glycidyl ether; the silane is aminosilane KH 550; the curing agent is a Hensman polyetheramine D230 curing agent; the liquid phenolic resin is
PR-967, the epoxy resin is Bluestar epoxy E-21, the pigment filler is the mixture of carbon black and titanium dioxide in the mass ratio of 8: 1, the carbon black is Texaco pigment carbon black CO L OURB L ACK S160, and the titanium dioxide is Tenuo titanium dioxide TRONOX CR-826.
The impact resistance, acid resistance and abrasion resistance of examples 2 to 9 were evaluated in the same manner as in example 1, and the results are shown in Table 2 below.
TABLE 2
Claims (10)
1. A rotating plate type magnetic flowmeter is characterized in that an anti-corrosion coating is arranged on the rotating plate type magnetic flowmeter; the rotating plate type magnetic flowmeter comprises a meter body, a bolt, a bracket and an integrating instrument; the integrating instrument is used for calculating and displaying flow; the integrating instrument is fixed on the watch body through a support by using a bolt.
2. The rotating plate magnetic flowmeter of claim 1, wherein the meter body is provided with a support.
3. The rotating plate magnetic flowmeter of claim 2, wherein the meter body further comprises a first magnet and a pressure sensor, the pressure sensor is connected to the support, and the first magnet is in floating contact with a sensing surface of the pressure sensor.
4. The rotating plate type magnetic flowmeter of claim 3, wherein a hinged support is arranged below the support, and a fulcrum shaft is arranged in the hinged support.
5. The rotating plate type magnetic flowmeter of claim 4, wherein the hinge support is provided with a rotating plate, and the rotating plate is rotatable about the fulcrum.
6. The rotating plate magnetic flowmeter of claim 5, wherein the rotating plate has a second magnet affixed thereto, and the first magnet and the second magnet are disposed in opposition to each other such that the two opposing faces of the first magnet and the second magnet are either both N-stage or both S-stage.
7. The rotating plate type magnetic flowmeter of claim 6, wherein the first magnet and the second magnet are disposed in opposition to each other to generate a repulsive force that brings the first magnet into contact with the pressure sensor, and the integrator converts the pressure signal into an electrical signal of the volume flow rate based on the pressure sensor and displays the electrical signal.
8. The rotor plate-type magnetic flowmeter of claim 7, wherein the support is made of a magnetically conductive material.
9. The rotor plate type magnetic flowmeter of claim 8, wherein the meter body is a circular straight pipe having the same size as the process pipe, and flanges are provided at both ends of the meter body for connection with the process pipe.
10. The rotating plate type magnetic flowmeter according to any one of claims 1 to 9, wherein the corrosion-resistant coating comprises an epoxy zinc-rich primer layer and an epoxy rust-resistant paint layer from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010380757.3A CN111504395A (en) | 2020-05-08 | 2020-05-08 | Rotary plate type magnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010380757.3A CN111504395A (en) | 2020-05-08 | 2020-05-08 | Rotary plate type magnetic flowmeter |
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| Publication Number | Publication Date |
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| CN111504395A true CN111504395A (en) | 2020-08-07 |
Family
ID=71875283
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010380757.3A Withdrawn CN111504395A (en) | 2020-05-08 | 2020-05-08 | Rotary plate type magnetic flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2618382A (en) * | 2022-05-06 | 2023-11-08 | Coroflo Ltd | Compact target flow meter |
-
2020
- 2020-05-08 CN CN202010380757.3A patent/CN111504395A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2618382A (en) * | 2022-05-06 | 2023-11-08 | Coroflo Ltd | Compact target flow meter |
| WO2023214046A1 (en) | 2022-05-06 | 2023-11-09 | Coroflo Limited | Compact target flow meter |
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