CN107024248B - Liquid turbine flowmeter with ceramic spacer - Google Patents
Liquid turbine flowmeter with ceramic spacer Download PDFInfo
- Publication number
- CN107024248B CN107024248B CN201710389225.4A CN201710389225A CN107024248B CN 107024248 B CN107024248 B CN 107024248B CN 201710389225 A CN201710389225 A CN 201710389225A CN 107024248 B CN107024248 B CN 107024248B
- Authority
- CN
- China
- Prior art keywords
- turbine
- flowmeter
- ceramic spacer
- pulse sensor
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 24
- 125000006850 spacer group Chemical group 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000001939 inductive effect Effects 0.000 claims description 6
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 230000005291 magnetic effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001039 duplex stainless steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention provides a liquid turbine flowmeter with a ceramic spacer, which comprises a flowmeter shell with a turbine inside, wherein a pulse sensor is arranged on the flowmeter shell, the turbine is sleeved with the ceramic spacer, the ceramic spacer enables the turbine to be isolated from the flowmeter shell, and a detection part of the pulse sensor extends into the flowmeter shell to be in contact with the ceramic spacer. The invention has high detection precision and low cost, and can be applied to occasions with strong corrosive media.
Description
Technical Field
The invention relates to the field of liquid metering devices, in particular to a liquid turbine flowmeter with a ceramic spacer.
Background
In the flow metering device of the liquid medium, the liquid turbine flowmeter is a common metering device and has the characteristics of low cost, high precision and the like.
The structure of the conventional liquid turbine flowmeter is shown in fig. 1, a flowmeter shell is made of austenitic stainless steel, and a turbine and a pulse sensor are isolated by a layer of thin stainless steel. Since the detection is performed through stainless steel, the pulse sensor needs to be a magneto-electric sensor or a hall sensor, and the turbine needs to be made of ferromagnetic stainless steel material. The defects are that:
a. the turbine is made of ferromagnetic stainless steel materials (such as ferrite stainless steel, martensite stainless steel or duplex stainless steel) and cannot be made of austenitic stainless steel (nonferromagnetic), so that the corrosion resistance of the materials is poor, and the flowmeter cannot be applied to the occasion of strong corrosive media;
b. the detection part of the magneto-electric sensor or the Hall sensor has a certain magnetic field, and can generate a rotation stopping effect on the turbine, thereby influencing the detection precision of the turbine flowmeter.
c. Magneto-electric sensors or hall sensors are costly.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides the liquid turbine flowmeter with the ceramic spacer, which has high detection precision and low cost and can be applied to occasions with strong corrosive media.
The invention comprises a flowmeter shell with a built-in turbine, wherein a pulse sensor is arranged on the flowmeter shell, a ceramic spacer is sleeved outside the turbine, the turbine is isolated from the flowmeter shell by the ceramic spacer, and a detection part of the pulse sensor extends into the flowmeter shell and is close to the ceramic spacer.
The two ends of the ceramic spacer bush are sealed with the flowmeter shell through O-shaped sealing rings.
The two ends of the ceramic spacer bush are respectively fixed with guide vanes through nuts, sliding bearings are arranged in the centers of the guide vanes, and rotating shafts at the two ends of the turbine are supported on the sliding bearings, so that the turbine can freely and flexibly rotate.
The pulse sensor is an inductive proximity switch.
The turbine is made of austenitic stainless steel material.
The invention has the beneficial effects that:
1. the turbine can be made of austenitic stainless steel, and the flowmeter can be applied to the occasion of a strong corrosive medium.
2. The thermal expansion coefficient of the ceramic spacer is far smaller than that of stainless steel, so that when the temperature of the medium changes, the change of the inner aperture of the flowmeter is very small, and the detection precision of the flowmeter is facilitated to be increased.
3. The inductive proximity switch detection part does not have a magnetic field, the rotation stopping phenomenon of the turbine can not be generated, the turbine rotates more flexibly, and the measuring precision of the flowmeter is higher.
4. Inductive proximity switches are far less costly than magneto-electric or hall sensors.
Drawings
FIG. 1 is a schematic diagram of a conventional liquid turbine flowmeter.
FIG. 2 is a schematic diagram of the structure of the present invention.
FIG. 3 is a cross-sectional view taken along line A-A in FIG. 2.
Detailed Description
The structure of the invention is shown in figure 2, a ceramic spacer bush 8 is arranged in a flowmeter shell 2 (shown in figure 3), and two ends of the ceramic spacer bush are sealed with the flowmeter shell 2 by 2O-shaped sealing rings 7; 2 guide vanes 5 are arranged at two ends of a ceramic spacer bush 8 and are fixed by 2 nuts 3; the sliding bearings 4 are arranged at the centers of the 2 guide vanes 5, and the rotating shafts at the two ends of the turbine 6 are supported on the sliding bearings 4, so that the turbine 6 can freely and flexibly rotate. The pulse sensor inductive proximity switch 1 is arranged on the flowmeter shell 2, and the detection part of the pulse sensor inductive proximity switch is isolated from the turbine 6 by a ceramic spacer 8.
When the liquid medium with the flow to be detected flows through the turbine flowmeter from left to right, the fluid drives the turbine 6 to rotate, and the flow speed of the liquid medium is proportional to the rotating speed of the turbine 6. When one blade of the turbine 6 sweeps over the detection portion of the pulse sensor 1, the pulse sensor 1 outputs an electric pulse signal. In this way, the flow of the liquid medium is converted into an electric pulse signal with corresponding frequency by the flow of the liquid turbine, and the electric pulse signal is used for measuring and controlling the flow.
The present invention has been described in terms of the preferred embodiments thereof, and it should be understood by those skilled in the art that various modifications can be made without departing from the principles of the invention, and such modifications should also be considered as being within the scope of the invention.
Claims (2)
1. The utility model provides a take liquid turbine flowmeter of pottery spacer, includes built-in flowmeter casing (2) that have turbine (6), installs pulse sensor on flowmeter casing (2), its characterized in that: the turbine (6) is sleeved with a ceramic spacer bush (8), the ceramic spacer bush (8) enables the turbine (6) to be isolated from the flowmeter shell (2), and the detection part of the pulse sensor extends into the flowmeter shell (2) and is close to the ceramic spacer bush (8); the two ends of the ceramic spacer bush (8) are sealed with the flowmeter shell (2) through O-shaped sealing rings (7); the pulse sensor is an inductive proximity switch; the two ends of the ceramic spacer bush (8) are respectively fixed with a guide vane (5) through nuts (3), the center of the guide vane (5) is provided with a sliding bearing (4), and two end rotating shafts of the turbine (6) are supported on the sliding bearing (4), so that the turbine (6) can freely and flexibly rotate.
2. The ceramic spacer-equipped liquid turbine flowmeter of claim 1, wherein: the turbine (6) is made of austenitic stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389225.4A CN107024248B (en) | 2017-05-27 | 2017-05-27 | Liquid turbine flowmeter with ceramic spacer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389225.4A CN107024248B (en) | 2017-05-27 | 2017-05-27 | Liquid turbine flowmeter with ceramic spacer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107024248A CN107024248A (en) | 2017-08-08 |
| CN107024248B true CN107024248B (en) | 2024-01-30 |
Family
ID=59530058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710389225.4A Active CN107024248B (en) | 2017-05-27 | 2017-05-27 | Liquid turbine flowmeter with ceramic spacer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107024248B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58223029A (en) * | 1982-06-21 | 1983-12-24 | Shinkawa Denki Kk | Eddy current type pressure gage |
| FR2853069A3 (en) * | 2003-03-28 | 2004-10-01 | Huba Control Ag | Vortex flowmeter has a sensor element formed as part of a ceramic plate on which electronic signal processing circuits are also mounted, so that flowmeter has few parts and is easy to install |
| CN202748059U (en) * | 2012-06-19 | 2013-02-20 | 上海汉华水处理工程有限公司 | Turbine flow sensor with double ceramic balls |
| CN205655870U (en) * | 2016-03-28 | 2016-10-19 | 蚌埠赛英电子科技发展有限公司 | Type turbine flowmeter is irritated in farming |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201440079U (en) * | 2009-02-10 | 2010-04-21 | 中国人民解放军总后勤部油料研究所 | Liquid turbine flowmeter |
| CN203745016U (en) * | 2013-12-16 | 2014-07-30 | 天津萌赛能源科技有限公司 | Eddy current turbine flow rate meter device for measuring liquid |
| CN204359364U (en) * | 2014-11-06 | 2015-05-27 | 武汉宇格电力设备有限公司 | For the blanking flow indicator of dusty material bulk system |
| CN204421970U (en) * | 2015-01-14 | 2015-06-24 | 丹东济海流量仪器仪表有限公司 | A kind of low discharge turbo flow meter |
| CN206876228U (en) * | 2017-05-27 | 2018-01-12 | 南京保立隆包装机械有限公司 | Liquid turbine flowmeter with ceramic spacer |
-
2017
- 2017-05-27 CN CN201710389225.4A patent/CN107024248B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58223029A (en) * | 1982-06-21 | 1983-12-24 | Shinkawa Denki Kk | Eddy current type pressure gage |
| FR2853069A3 (en) * | 2003-03-28 | 2004-10-01 | Huba Control Ag | Vortex flowmeter has a sensor element formed as part of a ceramic plate on which electronic signal processing circuits are also mounted, so that flowmeter has few parts and is easy to install |
| CN202748059U (en) * | 2012-06-19 | 2013-02-20 | 上海汉华水处理工程有限公司 | Turbine flow sensor with double ceramic balls |
| CN205655870U (en) * | 2016-03-28 | 2016-10-19 | 蚌埠赛英电子科技发展有限公司 | Type turbine flowmeter is irritated in farming |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107024248A (en) | 2017-08-08 |
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