CN218973540U - Novel magnetic induction rotameter - Google Patents
Novel magnetic induction rotameter Download PDFInfo
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- CN218973540U CN218973540U CN202223611558.2U CN202223611558U CN218973540U CN 218973540 U CN218973540 U CN 218973540U CN 202223611558 U CN202223611558 U CN 202223611558U CN 218973540 U CN218973540 U CN 218973540U
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Abstract
The utility model provides a novel magnetic induction rotameter which comprises a flowmeter main body, a rotor and a processing display, wherein flanges are arranged at two ends of the flowmeter main body, a measuring cavity for accommodating the rotor is formed in the flowmeter main body, and an electromagnetic receiver is arranged in the processing display; the inside of the measuring cavity is provided with a sealing part in a partition way, so that the measuring cavity is divided into a measuring area and an induction area; the rotor set up in the measuring zone, just the rotor itself is non-magnetic, flowmeter main part lateral wall is provided with the export portion, just the export portion is along the fluid direction department the downstream of rotor and between the sealing component, just the tip of export portion sets up the direction connecting piece. The utility model changes the magnetic rotor into non-magnetic rotor, and separately equips the sensing area for measurement, and connects the rotor and the magnetic component by the force transmission piece, thereby preventing inaccurate flow display caused by accumulation of ferromagnetic impurities.
Description
Technical Field
The utility model relates to the technical field of rotameters, in particular to a novel magnetic induction rotameter.
Background
The rotameter is used for measuring the fluid flow according to the throttling principle, and generally consists of two parts, namely a conical pipe which gradually expands from bottom to top, and a rotor which is positioned in the conical pipe and has higher density than the fluid to be measured and moves up and down along the central line of the pipe during working. Usually, the conical tube of the rotameter is made of glass, plastic or metal, and the rotor position in the conical tube of the metal material is transferred to the outside of the tube in a magnetic coupling mode, so that the flow value is displayed on the panel of the rotameter.
A metallic rotameter return prevention device as disclosed in the grant publication number CN205719123U attracts the rotor upward by the attraction of a magnet to the metallic rotor. Also disclosed is a metal rotameter with filtering action as disclosed in the grant publication number CN212807165U, which removes impurities in a fluid by providing a filter screen. In the prior art and the rotor of the metal magnetic rotameter, because the rotor has magnetism, impurities (ferromagnetic impurities) which can be attracted by magnetism in fluid are easy to be adsorbed on the magnetic rotor, even if a filter device such as a filter screen is arranged, magnetism of the rotor cannot be completely avoided, and attraction force for carrying the magnetic impurities in the fluid is provided. If the impurities are continuously accumulated, the moving resistance of the rotor is increased, and the problems of rotor clamping and the like are caused when the impurities are serious, but the problems are caused directly because the flow display is inaccurate, and unnecessary deviation occurs in the subsequent engineering.
Disclosure of Invention
The utility model aims to provide a magnetic induction rotameter which can prevent the deviation and clamping of measurement caused by the adsorption of ferromagnetic impurities carried in fluid to a rotor.
For this purpose, the utility model adopts the following technical scheme:
the novel magnetic induction rotameter comprises a flowmeter main body, a rotor and a processing display, wherein flanges are arranged at two ends of the flowmeter main body, a measuring cavity for accommodating the rotor is formed in the flowmeter main body, and an electromagnetic receiver is arranged in the processing display; the inside of the measuring cavity is provided with a sealing part in a partition way, so that the measuring cavity is divided into a measuring area and an induction area; the rotor is arranged in the measuring area, the rotor is non-magnetic, an outlet part is arranged on the side wall of the flowmeter main body, the outlet part is arranged between the downstream of the rotor and the sealing part along the fluid direction, and a guide connecting piece is arranged at the end part of the outlet part; a magnetic component matched with the electromagnetic receiver is arranged in the induction area, and a placing frame matched with the magnetic component is arranged in the induction area; and a force transmission piece is connected between the rotor and the magnetic part, and the sealing part is in sliding sealing fit with the force transmission piece, so that the force transmission piece can slide up and down relative to the sealing part and keep sealing between the sealing part and the force transmission piece.
Further: the flowmeter main body comprises a first measuring cylinder with the measuring area and a second measuring cylinder with the sensing area; the two ends of the first measuring cylinder are provided with first connecting flanges, the two ends of the second measuring cylinder are provided with second connecting flanges, and the first measuring cylinder is connected with the second measuring cylinder through the first connecting flanges and the second connecting flanges.
Further: and a sealing gasket is arranged between the attaching ends of the first measuring cylinder and the second measuring cylinder, and a through hole matched with the force transmission piece is formed in the sealing gasket in a penetrating manner.
Further: the cross-sectional area of the force-transmitting member is smaller than the cross-sectional area of the rotor.
Further: the end face of the magnetic part, which is far away from the force transmission part, is provided with a guide rod, and a guide frame matched with the guide rod in a guiding way is arranged in the sensing area.
Further: the displacement direction of the guide rod is consistent with the displacement direction of the force transmission piece.
Further: a connecting frame is connected between the processing display and the flowmeter main body, so that the processing display is positioned at the side of the induction zone.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model changes the magnetic rotor into non-magnetic rotor, and separately equips the sensing area for measurement, and connects the rotor and the magnetic component by the force transmission piece, thereby preventing inaccurate flow display caused by accumulation of ferromagnetic impurities. When the flow velocity of the fluid is measured, the fluid does not pass through the sensing area, but the displacement of the rotor is transmitted to the magnetic component by the force transmission piece, and the displacement of the magnetic component is received by the sensor to display the flow velocity of the fluid. Therefore, the problems of rotor clamping, inaccurate flowmeter display and the like caused by the fact that impurities in the fluid, which are easy to be attracted by the magnet, are adsorbed on the rotor can be avoided.
Drawings
Fig. 1 is a schematic diagram of the main structure of the present utility model.
The marks in the drawings are: the flow meter comprises a flow meter main body 1, a rotor 2, a force transmission piece 3, a sealing part 4, a placing frame 6, a magnetic part 7, a guide frame 8, a processing display 9, a connecting frame 10, a sealing gasket 11, a measuring area 12, a sensing area 13, an outlet part 14, a first measuring cylinder 15, a second measuring cylinder 16, a first connecting flange 17, a second connecting flange 18, a guide connecting piece 19 and a guide rod 20.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.
As shown in fig. 1, the novel magnetic induction rotameter comprises a flowmeter main body 1, a rotor 2 and a processing display 9, wherein flanges are arranged at two ends of the flowmeter main body 1, a measuring cavity for accommodating the rotor 2 is formed in the flowmeter main body 1, and an electromagnetic receiver is arranged in the processing display 9; the inside of the measuring cavity is provided with a sealing part 4 in a partition way, so that the measuring cavity is divided into a measuring area 12 and an induction area 13; the rotor 2 is arranged in the measuring area 12, the rotor 2 is non-magnetic, the side wall of the flowmeter body 1 is provided with an outlet part 14, the outlet part 14 is positioned between the downstream of the rotor 2 and the sealing part 4 along the fluid direction, and the end part of the outlet part 14 is provided with a guide connecting piece 19; a magnetic part 7 matched with the electromagnetic receiver is arranged in the induction area 13, and a placing frame 6 matched with the magnetic part 7 is arranged in the induction area 13; a force transfer member 3 is connected between the rotor 2 and the magnetic member 7, and the sealing member 4 is in sliding sealing fit with the force transfer member 3, so that the force transfer member 3 can slide up and down relative to the sealing member 4 and maintain the sealing between the sealing member 4 and the force transfer member 3.
In this embodiment, by separating the measuring region 12 from the sensing region 13, while measuring the flow rate of the fluid under the sealing action of the sealing member 4, the fluid does not pass through the sensing region 13, flows only in the measuring region 12 and flows out from the outlet portion 14.
The magnetic component 7 is a magnetic component (similar to a permanent magnet), the magnetism is strong, and the magnetism of small weight can be perceived by the electromagnetic receiver. The magnetic force sensor is similar to a common magnet in N, S stages, is internally embedded on the force transmission piece 3, and has small mass brought into a programmed calculation formula, so that the magnetic force sensor has no influence on detection.
The sealing component 4 is arranged between the upper part and the end surface of the first measuring cylinder 15, and optimally on the longitudinal section of the flowmeter main body 1, the bottom side end surface of the sealing component 4 is level with the top surface of the outlet part 14, so that the fluid can flow out of the outlet part 14 directly after entering the measuring area 12, the upper part of the first measuring cylinder 15 is ensured to have no fluid accumulation, and the measuring precision is improved. The sealing member 4 includes, but is not limited to, rubber, POM plastic, PVC, polytetrafluoroethylene of acid and alkali resistant material, PE, etc. which are not easily deformed.
The sealing part 4 and the embedded force transmission piece 3 have good sliding performance, and simultaneously have sealing performance for preventing the liquid phase of the measuring area 12 from entering the sensing area 13. In order to ensure the sliding performance, the sealing part 4 has a smaller length, so that the friction force of the force transmission part 3 is always kept at a smaller level, the cross section of the rotor 2 is correspondingly increased, and the sensing of the flow change is more sensitive. However, excessive fluid flow may require periodic monthly maintenance as liquid phase penetrates into the measurement zone 12.
The flow meter in this embodiment is suitable for a water pressure range of 0-2.5MPa.
As shown in fig. 1, the flowmeter body 1 includes a first measuring cylinder 15 having a measuring region 12 built therein, and a second measuring cylinder 16 having a sensing region 13 built therein; the first measuring cylinder 15 is provided with a first connecting flange 17 at both ends, the second measuring cylinder 16 is provided with a second connecting flange 18 at both ends, and the first measuring cylinder 15 and the second measuring cylinder 16 are connected by the first connecting flange 17 and the second connecting flange 18. And the first connection flange 17 and the second connection flange 18, which are adjacent to each other, may be connected by bolts and nuts so that the flowmeter body 1 is molded.
The guiding connection piece 19 at the end of the outlet portion 14 can be determined according to the condition of a specific connecting pipeline, and a flange matched with the connection of a downstream pipeline is optimally adopted, so that the flowmeter main body 1 is communicated with the downstream pipeline.
The arrow direction shown in fig. 1 is the fluid flowing direction, and fluid enters the measuring area 12 from bottom to top from the bottom end of the first measuring cylinder 15, when the fluid flow is large enough, the acting force of the fluid on the rotor 2 can support the rotor 2, so that the rotor 2 is displaced, and the fluid flows out from the outlet 14 on the side surface of the flowmeter main body 1 through the annular surface between the rotor 2 and the inner wall of the first measuring cylinder 15. When the acting force of the fluid on the rotor 2 is equal to the gravity of the rotor 2, the rotor 2 stays at a certain position in the first measuring cylinder 15 due to the force balance, at the moment, the displacement of the rotor 2 can be transmitted to the magnetic component 7 along with the force transmission piece 3, the electromagnetic receiver in the processing display 9 senses the position of the magnetic component 7 through the magnetic coupling effect, and the displacement of the magnetic component 7 can be converted into an electric signal to be displayed on the panel of the processing display 9.
As shown in fig. 1, a sealing gasket 11 is arranged between the attaching ends of the first measuring cylinder 15 and the second measuring cylinder 16, and a through hole matched with the force transmission member 3 is formed in the sealing gasket 11. The sealing gasket 11 further ensures the tightness between the first measuring cylinder 15 and the second measuring cylinder 16, and the pressure-bearing state of the bottom end of the sealing member 4 facing the fluid can be further enhanced through the sealing gasket 11, so that the sealing member 4 has enough impact resistance to bear the impact of the fluid.
As shown in fig. 1, the cross-sectional area of the force-transmitting member 3 is smaller than the cross-sectional area of the rotor 2. The cross-sectional area of the force-transmitting member 3 is small, so that the contact area with the sealing member 4 is small: the corresponding maximum static friction force is small, so that the force transmission piece 3 still has displacement when the measured liquid flow velocity is small, and the flow can be detected; meanwhile, the sliding friction force between the force transmission piece 3 and the sealing part 4 is smaller, and the reading flow indication is quicker; and the smaller the probability of liquid phase entering the measuring zone 12, the better the tightness, and the upper limit of the flow of the measured liquid can thus be increased.
Wherein, the force transmission piece 3 adopts a cylindrical rod body structure without magnetic force to connect the rotor 2 and the magnetic component 7. The force-transmitting element 3 can move up and down in the measuring region 12 and the sensing region 13, so that the displacement of the rotor 2 is converted into the displacement of the magnetic component 7, and the flow rate when the fluid impacts the rotor 2 is obtained.
As shown in fig. 1, the end surface of the magnetic part 7, which is far away from the force transmission piece 3, is provided with a guide rod 20, and a guide frame 8 which is in guide fit with the guide rod 20 is arranged in the sensing area 13. The guide frame 8 is protruded towards the first measuring cylinder 15 at the second measuring cylinder 16, and a round hole matched with the guide rod 20 is formed in the guide frame 8, so that the displacement direction of the magnetic component 7 can be further ensured under the displacement action of the force transmission piece 3.
Wherein the displacement direction of the guide rod 20 coincides with the displacement direction of the force-transmitting member 3. In this embodiment, the axis of the guide rod 20 is parallel to, and preferably coaxial with, the axis of the force-transmitting member 3.
In particular, the rack 6 comprises structural components similar up and down, mainly for the purpose of a dimensionally stable fixation of the magnetic components 7. The middle part of the lower part of the placing frame 6 is hollowed out, is nested on the force transmission piece 3, the upper end of the lower part is adhered with the magnetic part 7, and the periphery of the lower part extends to the inner wall of the measuring area 12. The upper part of the placing frame 6 is still in a hollow structure in the middle, the middle is used for the force transmission piece 3 to pass through, the upper part is nested at the top of the magnetic part 7, and the periphery extends to the inner wall of the measuring area 12. The material of the placing frame 6 has certain toughness and wear resistance. The magnetic component 7 is stabilized through the placing frame 6, so that the measurement stability is enhanced, and the magnetic component 7 is prevented from shifting in the horizontal direction during liquid flushing, so that the detection precision is affected. Meanwhile, the magnetic component 7 is prevented from being damaged due to collision in the measuring area 12 caused by rapid liquid flushing, and the service life of the magnetic component 7 is prolonged.
As shown in fig. 1, a connection frame 10 is connected between the process display 9 and the flowmeter body 1, so that the process display 9 is located on the sensing area 13 side. The position of the processing display 9 is adapted to the position of the magnetic part 7.
Referring to fig. 1, when the magnetic induction rotameter measures the flow of fluid, the problems of rotor 2 clamping and inaccurate flowmeter display caused by the fact that impurities in materials are easily attracted by magnets are adsorbed on a rotor can be avoided, and the specific operation modes are as follows:
the first measuring cylinder 15 and the second measuring cylinder 16 are connected to the pipeline through the first connecting flange 17 and the second connecting flange 18, the first measuring cylinder 15 is communicated with the pipeline to be measured, and meanwhile, the guiding connecting piece 19 is communicated with the downstream pipeline.
When the flow rate of the fluid is large enough, the acting force of the fluid on the rotor 2 can support the rotor 2 to displace the rotor 2, and the fluid flows out from the outlet 14 on the side surface of the flowmeter main body 1 through the annular surface between the rotor 2 and the inner wall of the first measuring cylinder 15. When the acting force of the fluid on the rotor 2 is equal to the gravity of the rotor 2, the rotor 2 stays at a certain position in the first measuring cylinder 15 due to the force balance, at the moment, the displacement of the rotor 2 can be transmitted to the magnetic component 7 along with the force transmission piece 3, the electromagnetic receiver in the processing display 9 senses the position of the magnetic component 7 through the magnetic coupling effect, and the displacement of the magnetic component 7 can be converted into an electric signal to be displayed on the panel of the processing display 9.
The above embodiment is only one preferred technical solution of the present utility model, and it should be understood by those skilled in the art that modifications and substitutions can be made to the technical solution or parameters in the embodiment without departing from the principle and essence of the present utility model, and all the modifications and substitutions are covered in the protection scope of the present utility model.
Claims (7)
1. The novel magnetic induction rotameter comprises a flowmeter main body (1) with flanges at two ends, a rotor (2) and a processing display (9), wherein a measuring cavity for accommodating the rotor (2) is formed in the flowmeter main body (1), and an electromagnetic receiver is arranged in the processing display (9); the method is characterized in that: the inside of the measuring cavity is provided with a sealing part (4) in a partition way, so that the measuring cavity is divided into a measuring area (12) and an induction area (13);
the rotor (2) is arranged in the measuring area (12), the rotor (2) is non-magnetic, an outlet part (14) is arranged on the side wall of the flowmeter main body (1), the outlet part (14) is arranged between the downstream of the rotor (2) and the sealing part (4) along the fluid direction, and a guide connecting piece (19) is arranged at the end part of the outlet part (14);
a magnetic component (7) matched with the electromagnetic receiver is arranged in the induction area (13), and a placing frame (6) matched with the magnetic component (7) is arranged in the induction area (13);
a force transmission piece (3) is connected between the rotor (2) and the magnetic part (7), and the sealing part (4) is in sliding sealing fit with the force transmission piece (3), so that the force transmission piece (3) can slide up and down relative to the sealing part (4) and keep sealing between the sealing part (4) and the force transmission piece (3).
2. The novel magnetically induced rotameter set forth in claim 1 wherein: the flowmeter body (1) comprises a first measuring cylinder (15) with the measuring area (12) and a second measuring cylinder (16) with the sensing area (13) arranged inside;
the two ends of the first measuring cylinder (15) are provided with first connecting flanges (17), the two ends of the second measuring cylinder (16) are provided with second connecting flanges (18), and the first measuring cylinder (15) and the second measuring cylinder (16) are connected through the first connecting flanges (17) and the second connecting flanges (18).
3. The novel magnetically induced rotameter set forth in claim 2 wherein: a sealing gasket (11) is arranged between the attaching ends of the first measuring cylinder (15) and the second measuring cylinder (16), and a through hole matched with the force transmission piece (3) is formed in the sealing gasket (11) in a penetrating mode.
4. The novel magnetically induced rotameter set forth in claim 1 wherein: the cross-sectional area of the force-transmitting member (3) is smaller than the cross-sectional area of the rotor (2).
5. The novel magnetically induced rotameter set forth in claim 1 wherein: the end face of the magnetic component (7) far away from the side of the force transmission piece (3) is provided with a guide rod (20), and a guide frame (8) in guide fit with the guide rod (20) is arranged in the sensing area (13).
6. The novel magnetically induced rotameter recited in claim 5 wherein: the displacement direction of the guide rod (20) is consistent with the displacement direction of the force transmission piece (3).
7. The novel magnetically induced rotameter set forth in claim 1 wherein: a connecting frame (10) is connected between the processing display (9) and the flowmeter main body (1), so that the processing display (9) is positioned at the side of the sensing area (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223611558.2U CN218973540U (en) | 2022-12-30 | 2022-12-30 | Novel magnetic induction rotameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223611558.2U CN218973540U (en) | 2022-12-30 | 2022-12-30 | Novel magnetic induction rotameter |
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| Publication Number | Publication Date |
|---|---|
| CN218973540U true CN218973540U (en) | 2023-05-05 |
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ID=86163699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223611558.2U Active CN218973540U (en) | 2022-12-30 | 2022-12-30 | Novel magnetic induction rotameter |
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| Country | Link |
|---|---|
| CN (1) | CN218973540U (en) |
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2022
- 2022-12-30 CN CN202223611558.2U patent/CN218973540U/en active Active
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