CN103968899A - Rolling positioning type high-accuracy metal tube floater flow meter - Google Patents
Rolling positioning type high-accuracy metal tube floater flow meter Download PDFInfo
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- CN103968899A CN103968899A CN201410197132.8A CN201410197132A CN103968899A CN 103968899 A CN103968899 A CN 103968899A CN 201410197132 A CN201410197132 A CN 201410197132A CN 103968899 A CN103968899 A CN 103968899A
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Abstract
The invention discloses a rolling positioning type high-accuracy metal tube floater flow meter. The rolling positioning type high-accuracy metal tube floater flow meter comprises a measurement tube and a floater, wherein the axis of the measurement tube coincides with the axis of the floater. A disc is arranged on the floater. The diameter of the disc is larger than those of other portions of the floater. The floater is positioned in the center of the measurement tube through a positioning device connected with the inner wall of the measurement tube and can freely move up and down. The disc is arranged at the lower end of the floater. The outer surface of the lower end of the disc is in an arc shape. The positioning device comprises two positioning units which are arranged up and down and are identical in structure. Each positioning device comprises three positioning posts fixedly connected with the inner wall of the measurement tube. Every three positioning posts are located on the same horizontal plane and the included angle between every two adjacent positioning posts is 120 degrees. The end, close to the axis of the measurement tube, of each positioning post is provided with a ball. The upper portion of the floater is clamped and limited by every three balls and the floater can be made to freely move up and down but cannot move horizontally. Due to the fact that the positioning device is located on the upper portion, flowing of fluid is not influenced, and the measurement accuracy is remarkably increased.
Description
Technical field
The invention belongs to field of flow meters, relate in particular to a kind of scroll positioning type high-precision metal pipe suspended body flowmeter.
Background technology
Metal pipe float flow meter, is the effect that utilizes fluid, and float following current in vertically arranged measuring tube is moved up.Being in proportion of the displacement of float and flow, pass through magnetic drive system, with the not way of contact, the size of float displacement amount indicator directly being indicated to flow, it is simple in structure, easy to maintenance, single shaft or Two axle drive pointer, reliability is high, and applicability is wide, can be used to measure the flow of liquid, gas and steam.
Float in metal pipe float flow meter must be coaxial with measuring tube, just can guarantee to measure accurately, so locating device is installed in measuring tube, float is positioned to measuring tube center and it can freely be moved up and down.Existing locating device comprises two positioning bodies that structure is identical, lays respectively at epimere and the lower section of float.Its course of work is as follows: fluid enters from the lower end of measuring tube, first will be through the positioning body of lower end, then could flow to the disk of maximum gauge on float, and drive float to move up, in the situation that fluid flow is constant, float also can finally keep static, thereby obtains a flow indicated value corresponding with this position.
The defect of above-mentioned conventional metals pipe suspended body flowmeter is: when fluid process positioning body, will inevitably make its flow direction change a lot, this variation can change the pressure distribution of fluid to float disk to a certain extent, make it be difficult to definitely be upwarded pressure, thereby reduce measuring accuracy; In addition, because the positioning body of lower end can be offset segment fluid flow pressure, be that fluid-phase reduces for its original pressure, also can cause its measuring accuracy to reduce, and can improve the minimum measured value of fluid flow, be subject to certain limitation for the flow measurement meeting of low-pressure fluid.
Summary of the invention
Object of the present invention is just to provide in order to address the above problem a kind of scroll positioning type high-precision metal pipe suspended body flowmeter.
In order to achieve the above object, the present invention has adopted following technical scheme:
Scroll positioning type high-precision metal pipe suspended body flowmeter of the present invention comprises measuring tube and the float that axial line overlaps, taking the fluid intake of described measuring tube as lower end, middle and lower part inwall in described measuring tube is provided with conical section, described float is provided with disk, the diameter of described disk is greater than the diameter at other position of described float, the minimum diameter of the conical section of the slightly larger in diameter of described disk in described measuring tube, described float is positioned the center of described measuring tube and can be freely moved up and down by the locating device being connected with described measuring tube inwall; It is characterized in that: described disk is located at the end, lower end of described float, the lower end outside surface of described disk is circular arc; Described locating device comprises two above-below directions arrangements and the identical positioning unit of structure, each positioning unit comprises three reference columns that are fixedly connected with described measuring tube inwall, three described reference columns angle between same horizontal plane and adjacent two described reference columns is 120 °, each described reference column is provided with ball near the termination of described measuring tube central axis, and three described balls by spacing the epimere clamping of described float and described float can freely be moved up and down can not move horizontally simultaneously.
Further, described reference column is provided with hemispherical groove near the termination of described measuring tube central axis, and described ball is placed in described hemispherical groove.This device processing is simple, effective.
Further, can make float in vertical direction in order to ensure two positioning units, the distance between two described positioning units is not less than 1/8th of described float total length.
Further, the xsect of described float upper end can also be equilateral triangle, positive dirction or other regular polygons, and the number of described reference column is consistent with the number on the limit of regular polygon, reference column and polygon consistent installation of length of side direction.
Further, the ball that install the termination of described reference column can also be roller.
Further, described permanent magnet expulsive force location type high-precision metal pipe suspended body flowmeter also comprises magnetic obliquity transmitter, can show the pointer of instantaneous delivery, can show instantaneous and liquid crystal display integrated flux, upper and lower limit alarm.
Further, described magnetic obliquity transmitter inside is provided with microprocessor, A/D module output circuit, accurate voltage circuit, accurate voltage circuit is connected with A/D module output circuit, and A/D module output circuit is connected with microprocessor, and microprocessor is connected with liquid crystal display.
Further, described liquid crystal display inside has three integrators can show respectively forward cumulative amount, reverse semi-invariant and difference integrating amount, and display interior is provided with power down clock, has power-down protection.
Further, described permanent magnet expulsive force location type high-precision metal pipe also comprises data communication circuit and wireless transport module, for data communication and wireless transmission measuring-signal.
Further, described bound alarm adopts tongue tube as trigger element.
Further, the conical section in described measuring tube adopts metal, organic glass or glass manufacture.
Further, described float middle part is also provided with buffer spring, prevents that starting to measure excessive float and the reference column of causing of moment pressure bumps.
effect gathers
The present invention is owing to two positioning units of locating device being all placed in to the upper fragment position of float, so the lower end of float is without any need for servicing unit, fluid is from the lower end of measuring tube enters, directly flow to the disk of float, the pressure of fluid can not reduce completely, and the pressure of disk is kept definitely upwards, reduce to greatest extent the factor that reduces measuring accuracy, measuring accuracy significantly improves, and is conducive to reduce the minimum measured value of fluid flow, more practical for the flow measurement of low-pressure fluid; Adopt roll type positioning unit, its frictional resistance is little, is convenient to moving up and down of float, can carry out to it location of horizontal direction simultaneously.
Brief description of the drawings
Fig. 1 is the measuring tube of conventional metals pipe suspended body flowmeter and the axial cut-open view of float;
Fig. 2 is the measuring tube of scroll positioning type high-precision metal pipe suspended body flowmeter of the present invention and the axial cut-open view of float;
Fig. 3 is the enlarged diagram of overlooking of reference column of the present invention, ball and float;
Axial cross-sectional schematic when Fig. 4 is scroll positioning type high-precision metal pipe suspended body flowmeter application of the present invention.
In figure: 1, flange; 2, positioning body; 3, measuring tube; 4, float; 5, disk; 6, conical section; 7, ball; 8, reference column; 9, display disc; 10, magnetic obliquity transmitter.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, traditional metal pipe float flow meter comprises measuring tube 3 and the float 4 that axial line overlaps, taking the fluid intake of measuring tube 3 as lower end, middle and lower part inwall in measuring tube 3 is provided with conical section 6, float 4 is provided with disk 5, the diameter of disk 5 is greater than the diameter at float 4 other positions, the minimum diameter of the conical section 6 of the slightly larger in diameter of disk 5 in measuring tube 3, and float 4 is positioned the center of measuring tube 3 and can be freely moved up and down by the locating device being connected with the inwall of measuring tube 3; Locating device herein comprises two positioning bodies 2 that structure is identical, lays respectively at epimere and the lower section of float 4.Its course of work is as follows: fluid enters from the lower end of measuring tube 3, first will be through the positioning body of lower end 2, then could flow to the disk 5 of maximum gauge on float 4, and drive float 4 to move up, in the situation that fluid flow is constant, float 4 also can finally keep static, thereby obtains a flow indicated value corresponding with this position.The defect of this conventional metals pipe suspended body flowmeter is: when fluid process positioning body 2, will inevitably make its flow direction change a lot, this variation can change the pressure distribution of the disk 5 of fluid to float 4 to a certain extent, make it be difficult to definitely be upwarded pressure, thereby reduce measuring accuracy; In addition, because the positioning body 2 of lower end can be offset segment fluid flow pressure, be that fluid-phase reduces for its original pressure, also can cause its measuring accuracy to reduce, and can improve the minimum measured value of fluid flow, be subject to certain limitation for the flow measurement meeting of low-pressure fluid.
As shown in Figures 2 and 3, scroll positioning type high-precision metal pipe suspended body flowmeter of the present invention, compare maximum difference from conventional metals pipe suspended body flowmeter and be that locating device is different, simultaneously because there is change in locating device, so the structure of float 4 has also had corresponding variation, be specially: disk 5 is located at the end, lower end of float 4, the lower end outside surface of disk 5 is circular arc, described locating device comprises two above-below directions arrangements and the identical positioning unit of structure, each positioning unit comprises three reference columns 8 that are fixedly connected with the inwall of measuring tube 3, three reference columns 8 angle between same horizontal plane and adjacent two reference columns 8 is 120 °, each reference column 8 is provided with ball 7 near the termination of measuring tube 3 central axis, its mounting structure is: reference column 8 is provided with hemispherical groove (unmarked in figure) near the termination of measuring tube 3 central axis, ball 7 is placed in hemispherical groove, three balls 7 by spacing the epimere clamping of float 4 and float 4 can freely be moved up and down can not move horizontally simultaneously, this point is mainly by regulating ball 7 to realize with the elasticity that contacts of hemispherical groove, this elasticity need to realize according to the comparatively accurate ball 7 of design parameter processing dimension and hemispherical groove, be easy to accomplish with current industrial technology.Can make float 4 in vertical direction in order to ensure two positioning units, the distance between two positioning units is not less than 1/8th of float 4 total lengths, generally gets more than 1/6th proper.
In Fig. 1, Fig. 2 and Fig. 3, all show the upper/lower terminal that is installed on respectively measuring tube 3 for 1, two flange 1 of flange of external fluid line.
As shown in Figure 4, the course of work of scroll positioning type high-precision metal pipe suspended body flowmeter of the present invention is as follows:
Fluid is from the lower end of measuring tube 3 enters, directly flow to the disk 5 of float 4, to upwarding pressure of disk 5, float 4 is moved up, fluid upwards flows along the surrounding of disk 5 simultaneously, because the gap between the circumference of disk 5 and the inwall of measuring tube 3 is identical, so flowing of fluid is also very even, after certain hour, because the flow of fluid keeps identical, so float 4 can be positioned a corresponding height, no longer move up and down, in a dynamic equilibrium state.Now, the annular gap area between the circumference of disk 5 and the inwall of measuring tube 3 also keeps certain.According to fluid dynamics---Bai Nuli equation, the dynamic balance equation formula of the continuity theorem of fluid and power, can calculate fluid by the average instantaneous delivery of this annulus area.
In said process, because fluid directly flows to the disk 5 of float 4, the pressure of fluid can not reduce completely, the pressure of disk 5 is kept definitely upwards, reduce to greatest extent the factor that reduces measuring accuracy, measuring accuracy significantly improves, and is conducive to reduce the minimum measured value of fluid flow, more practical for the flow measurement of low-pressure fluid.
As shown in Figure 4, in practical application, the flow of the mode reacting fluid showing with display disc 9, concrete structure and principle are: be embedded with a high-performance permanent-magnet steel in float 4 inside, along with moving up and down of float 4, the magnetic field that magnet steel produces around it also changes, and float 4 is in the time of transient equilibrium, and Distribution of Magnetic Field is also in stable.The inside of display disc 9 is provided with magnetic obliquity transmitter 10, its built-in magnetic field detection electronic module, can accurately measure the variation of its surrounding magnetic field, corresponding with the position of float 4 with the form of magnetic obliquity, the flow value of fluid, the position of float 4, magnetic obliquity three are corresponding one by one.By the microprocessor of electronic module, the variation in magnetic field is converted to the 4-20mA current signal output of a standard, and intuitively reflect by the pointer of display disc 9.The structure of above-mentioned display disc 9 is identical with the structure of the display disc of conventional metals pipe suspended body flowmeter.
Further, the xsect of described float 4 upper ends can also be equilateral triangle, positive dirction or other regular polygons, and the number of described reference column is consistent with the number on the limit of regular polygon, reference column and polygon consistent installation of length of side direction.
Further, the ball 7 that install the termination of described reference column 8 can also be roller.
Further, described permanent magnet expulsive force location type high-precision metal pipe suspended body flowmeter also comprises magnetic obliquity transmitter, can show the pointer of instantaneous delivery, can show instantaneous and liquid crystal display integrated flux, upper and lower limit alarm.
Further, described magnetic obliquity transmitter inside is provided with microprocessor, A/D module output circuit, accurate voltage circuit, accurate voltage circuit is connected with A/D module output circuit, and A/D module output circuit is connected with microprocessor, and microprocessor is connected with liquid crystal display.
Further, described liquid crystal display inside has three integrators can show respectively forward cumulative amount, reverse semi-invariant and difference integrating amount, and display interior is provided with power down clock, has power-down protection.
Further, described permanent magnet expulsive force location type high-precision metal pipe also comprises data communication circuit and wireless transport module, for data communication and wireless transmission measuring-signal.
Further, described bound alarm adopts tongue tube as trigger element.
Further, the conical section 6 in described measuring tube 3 adopts metal, organic glass or glass manufacture.
Further, described float 4 middle parts are also provided with buffer spring, prevent that starting to measure excessive float 4 and the reference column 8 of causing of moment pressure bumps.
The present invention is owing to two positioning units of locating device being all placed in to the upper fragment position of float, so the lower end of float is without any need for servicing unit, fluid is from the lower end of measuring tube enters, directly flow to the disk of float, the pressure of fluid can not reduce completely, and the pressure of disk is kept definitely upwards, reduce to greatest extent the factor that reduces measuring accuracy, measuring accuracy significantly improves, and is conducive to reduce the minimum measured value of fluid flow, more practical for the flow measurement of low-pressure fluid; Adopt roll type positioning unit, its frictional resistance is little, is convenient to moving up and down of float, can carry out to it location of horizontal direction simultaneously.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendments that performing creative labour can make or distortion still within protection scope of the present invention.
Claims (10)
1. a scroll positioning type high-precision metal pipe suspended body flowmeter, comprise measuring tube and float that axial line overlaps, taking the fluid intake of described measuring tube as lower end, middle and lower part inwall in described measuring tube is provided with conical section, described float is provided with disk, the diameter of described disk is greater than the diameter at other position of described float, the minimum diameter of the conical section of the slightly larger in diameter of described disk in described measuring tube, described float is positioned the center of described measuring tube and can be freely moved up and down by the locating device being connected with described measuring tube inwall; It is characterized in that: described disk is located at the end, lower end of described float, the lower end outside surface of described disk is circular arc; Described locating device comprises two above-below directions arrangements and the identical positioning unit of structure, each positioning unit comprises three reference columns that are fixedly connected with described measuring tube inwall, three described reference columns angle between same horizontal plane and adjacent two described reference columns is 120 °, each described reference column is provided with ball near the termination of described measuring tube central axis, and three described balls by spacing the epimere clamping of described float and described float can freely be moved up and down can not move horizontally simultaneously; Described reference column is provided with hemispherical groove near the termination of described measuring tube central axis, and described ball is placed in described hemispherical groove; Distance between two described positioning units is not less than 1/8th of described float total length.
2. scroll positioning type high-precision metal pipe suspended body flowmeter as claimed in claim 1, it is characterized in that, the xsect of described float upper end can also be equilateral triangle, positive dirction or other regular polygons, the number of described reference column is consistent with the number on the limit of regular polygon, reference column and polygon consistent installation of length of side direction.
3. scroll positioning type high-precision metal pipe suspended body flowmeter as claimed in claim 1, is characterized in that, the ball that install the termination of described reference column can also be roller.
4. scroll positioning type high-precision metal pipe suspended body flowmeter as claimed in claim 1, it is characterized in that, described permanent magnet expulsive force location type high-precision metal pipe suspended body flowmeter also comprises magnetic obliquity transmitter, can show the pointer of instantaneous delivery, can show instantaneous and liquid crystal display integrated flux, upper and lower limit alarm.
5. scroll positioning type high-precision metal pipe suspended body flowmeter as claimed in claim 1, it is characterized in that, described magnetic obliquity transmitter inside is provided with microprocessor, A/D module output circuit, accurate voltage circuit, accurate voltage circuit is connected with A/D module output circuit, A/D module output circuit is connected with microprocessor, and microprocessor is connected with liquid crystal display.
6. scroll positioning type high-precision metal pipe suspended body flowmeter as claimed in claim 1; it is characterized in that; described liquid crystal display inside has three integrators can show respectively forward cumulative amount, reverse semi-invariant and difference integrating amount, and display interior setting has the power down clock of power-down protection.
7. scroll positioning type high-precision metal pipe suspended body flowmeter as claimed in claim 1, it is characterized in that, described permanent magnet expulsive force location type high-precision metal pipe also comprises data communication circuit and the wireless transport module for data communication and wireless transmission measuring-signal.
8. scroll positioning type high-precision metal pipe suspended body flowmeter as claimed in claim 1, is characterized in that, described bound alarm adopts tongue tube as trigger element.
9. scroll positioning type high-precision metal pipe suspended body flowmeter as claimed in claim 1, is characterized in that, the conical section in described measuring tube adopts metal, organic glass or glass manufacture.
10. scroll positioning type high-precision metal pipe suspended body flowmeter as claimed in claim 1, is characterized in that, described float middle part is also provided with buffer spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410197132.8A CN103968899A (en) | 2014-05-09 | 2014-05-09 | Rolling positioning type high-accuracy metal tube floater flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410197132.8A CN103968899A (en) | 2014-05-09 | 2014-05-09 | Rolling positioning type high-accuracy metal tube floater flow meter |
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| Publication Number | Publication Date |
|---|---|
| CN103968899A true CN103968899A (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410197132.8A Pending CN103968899A (en) | 2014-05-09 | 2014-05-09 | Rolling positioning type high-accuracy metal tube floater flow meter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104337521A (en) * | 2014-08-27 | 2015-02-11 | 上海理工大学 | Totalizing flowmeter and operating method |
| CN107990947A (en) * | 2017-11-28 | 2018-05-04 | 丹东通博电器(集团)有限公司 | The flow quantity detection mechanism of suspended body flowmeter and application |
| CN108051041A (en) * | 2017-12-26 | 2018-05-18 | 重庆市旺成科技股份有限公司 | A kind of glass rotameter with auto-alarm function |
| CN108844590A (en) * | 2018-06-08 | 2018-11-20 | 合肥利都自动化仪表有限公司 | A kind of spinner flowmeter with built-in quick detachable low friction float |
| CN112254268A (en) * | 2020-10-30 | 2021-01-22 | 朱秧 | Big data intelligent air conditioning equipment with household metering function |
| CN113405615A (en) * | 2021-07-19 | 2021-09-17 | 山西新华防化装备研究院有限公司 | Gas mask is airflow detection device for air supply unit |
-
2014
- 2014-05-09 CN CN201410197132.8A patent/CN103968899A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104337521A (en) * | 2014-08-27 | 2015-02-11 | 上海理工大学 | Totalizing flowmeter and operating method |
| CN107990947A (en) * | 2017-11-28 | 2018-05-04 | 丹东通博电器(集团)有限公司 | The flow quantity detection mechanism of suspended body flowmeter and application |
| CN108051041A (en) * | 2017-12-26 | 2018-05-18 | 重庆市旺成科技股份有限公司 | A kind of glass rotameter with auto-alarm function |
| CN108051041B (en) * | 2017-12-26 | 2023-09-22 | 重庆市旺成科技股份有限公司 | Glass rotameter with automatic alarm function |
| CN108844590A (en) * | 2018-06-08 | 2018-11-20 | 合肥利都自动化仪表有限公司 | A kind of spinner flowmeter with built-in quick detachable low friction float |
| CN112254268A (en) * | 2020-10-30 | 2021-01-22 | 朱秧 | Big data intelligent air conditioning equipment with household metering function |
| CN113405615A (en) * | 2021-07-19 | 2021-09-17 | 山西新华防化装备研究院有限公司 | Gas mask is airflow detection device for air supply unit |
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