CN2323356Y - Continuous capacitance sensor - Google Patents
Continuous capacitance sensor Download PDFInfo
- Publication number
- CN2323356Y CN2323356Y CN 98220043 CN98220043U CN2323356Y CN 2323356 Y CN2323356 Y CN 2323356Y CN 98220043 CN98220043 CN 98220043 CN 98220043 U CN98220043 U CN 98220043U CN 2323356 Y CN2323356 Y CN 2323356Y
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- CN
- China
- Prior art keywords
- main pole
- utility
- model
- continuous capacitance
- capacitance sensor
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- 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.)
- Expired - Lifetime
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- 239000002184 metal Substances 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims description 10
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 20
- 239000003245 coal Substances 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract description 2
- 241000273930 Brevoortia tyrannus Species 0.000 abstract 4
- 230000000703 anti-shock Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 101100495270 Caenorhabditis elegans cdc-26 gene Proteins 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to a continuous capacitance sensor, comprising a metal main pole. The upper end of the main pole is provided with a fixing flange plate, and the upper part of the flange plate is provided with a capacitance transmitter; a main pole bunker is insulating, a plurality of scaling electrodes are arranged at definite heights outside the metal main pole in the bunker, and the scaling electrodes are respectively connected with the transmitter through the cables in the main pole. The utility model realizes segmenting scaling by using the scaling electrodes, and enhances the measuring precision of the continuous capacitance transducer. The utility model has the advantages of simple structure, low cost and powerful anti-shock ability; the measuring precision can meet the requirements for measuring material levels in coal bunkers, stone bunkers, etc. The utility model is especially suitable for being used under mal-conditions.
Description
The utility model relates to a kind of measurement mechanism, specifically a kind of continuous capacitance sensor.
We know, for solid material in the specific feed bin (powdery or bulk) amount what, utilizing the capacitive transducer measurement is one of more convenient at present, practical means.Traditional capacitive transducer is a kind of continuous capacitance sensor, promptly with the bulkhead of feed bin as a utmost point, make another utmost point to stretch into a metal electrode that is parallel to direction of measurement in the storehouse from Cang Ding, constitute one group and become the dielectric capacitance sensor, the variation of the capacitance signal by measuring the output of this capacitive transducer transmitter, the variation that can measure material level in the storehouse.During use, this survey sensor need adopt the alternate manner calibration, and difficulty is bigger; Simultaneously, because composition, moisture content, temperature, the granular physical parameter of material constantly change in the storehouse, original scaling point is no longer suitable, causes measurement result to be drifted about, and it is no longer accurate to measure.Though this measuring method can not satisfy the needs of user to level gauging eventually through improving repeatedly.In order to address the above problem, patent 91108963.2,94100133.4 has been introduced respectively and has severally been constituted the sectional capacitance sensor with insulated from each other, series arrangement, the set of segment electrodes and the bulkhead that are fixed together with suitable mode; Patent 89219440.5,94240007.0 has also proposed several sectional capacitance sensors, and the two poles of the earth of its each set of segmentation capacitive transducer provide by sensor self, is not related with the bulkhead of tested feed bin.Above-mentioned patent solves the scaling point problem by the continuous capacitance section, has reduced the influence of the change of properties of the accumulation of error and tested material to measurement structure, has improved measuring accuracy.But the project organization of section is complicated, and cost is higher, relatively poor, the narrow application range of shock resistance.
The purpose of this utility model is exactly to measure inaccurate and above-mentioned material level sectional capacitance sensor construction complexity, deficiency that cost is high in order to solve existing continuous capacitance sensor, provide a kind of simple in structure, cost is low, strong shock resistance is measured the continuous electric capacity sensor with enough accuracy.
For achieving the above object, a kind of continuous capacitance sensor, it establishes a metal main pole, and the main pole upper end is provided with to fix uses ring flange, and ring flange top is provided with capacitive pick-up, main pole is fixing with ring flange and feed bin insulation by insulating mat, main pole and feed bin bulkhead are respectively a utmost point, constitute to become the medium continuous capacitance, it is characterized in that very tubular structure of master metal, the main pole outside is some in the storehouse determines highly to be provided with the calibration electrode, and it is connected with transmitter by the cable that is arranged in the main pole pipe respectively.
The utility model is determined the calibration electrode of height and the two poles of the earth that the metal main pole forms calibration electric capacity, by judging the size of this calibration electric capacity, can determine whether the material in the storehouse arrives this scaling point, after judging that material reaches certain and determines height, the continuous capacitance value that is available this section height is calibrated, significantly reduced accumulated error, in time avoided the adverse effect of material physical factor variation measuring.The utility model is only judged having or not of material with the calibration electrode, do not carry out quantitative measurment, so the said calibration electrode of the utility model can select enough fewly, can be electrode terminal as it, be provided with insulation spacer between itself and the main pole, insulation spacer is full of the space between main pole and the calibration electrode.Having avoided folder powder phenomenon, improved impact resistance, is a kind of desirable subsection calibration continuous capacitance sensor.
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the utility model structural representation.
As can be seen from Figure 1, a kind of continuous capacitance sensor, it is provided with a metal main pole 1, it is a tubular structure, its upper end is provided with fixing with ring flange 2, ring flange top is provided with capacitive pick-up 3, and main pole 1 is fixing by insulating mat 4 usefulness ring flanges 2 and feed bin insulation, and main pole and feed bin bulkhead (the earth) are the two poles of the earth that become the medium continuous capacitance.The some definite calibration electrodes 5 that highly are provided with in main pole 1 outside are provided with insulation spacer 6 between main pole 1 and the calibration electrode 5, and enrich its space at interval by insulation spacer.Each calibration electrode 5 is connected with transmitter 3 by the cable 7 that is arranged in the main pole pipe, thus the capacitance signal between output calibration electrode and the main pole.
The selection of the utility model calibration electrode number can decide according to the height of tested material feed bin, and a calibration electrode is set between general every 1-6 rice height, and it preferably is located at the bottom of being responsible for joint flange 6, to reduce the material impact.Judge whether material arrives this point, does not carry out quantitative measurment, and it can select enough for a short time owing to only form electric capacity, make it be reduced to negligible degree the influence of the electric capacity between the person in charge and bulkhead with the calibration electrode.Therefore, the utility model calibration electrode is an electrode terminal, is provided with insulation spacer between itself and charge electrode, has reduced the impact of material to electrode, and has avoided the material folding phenomenon.
The utility model course of work is such, along with material add put in storage in, it highly progressively improves, do not flood as yet when determining height A 1 at material, variator changes by the capacitance signal of measuring continuous capacitance output, compare with the last signal of its record, determined that promptly the thing position is at the height that is lower than the A1 part, after flooding definite height A 1, material (judges) by the calibration capacitance signal, transmitter is noted the continuous capacitance value n1 of 0-A1 section full with substance rapidly, with this value the A1-A2 section is calibrated, the continuous capacitance value n1 of the continuous capacitance value that records and definite height A 1 relatively just can determine the height of materials between A1-A2, equally between A2-A3, continuous capacitance value n2 with the continuous capacitance value that records and definite height A 2 compares, and can determine the height of materials between A2-A3 more exactly, and the like.Subsection calibration has significantly reduced accumulated error like this, is responsible for the areal survey of having realized material by a metal, has improved the precision of measuring greatly, has overcome sectional capacitance sensor construction complexity in the past, the deficiency that cost is high.
The utility model is simple in structure, cost is low, strong shock resistance, and measuring accuracy can satisfy the requirement to level gauging such as coal bunker, building stones storehouse, is particularly suitable for using under the environment mal-condition.
Claims (2)
1, a kind of continuous capacitance sensor, it establishes a metal main pole, the main pole upper end is provided with the fixing ring flange of using, ring flange top is provided with capacitive pick-up, and main pole is fixing with ring flange and feed bin insulation by insulating mat, and main pole and feed bin bulkhead are respectively a utmost point, constitute and become the medium continuous capacitance, it is characterized in that very tubular structure of master metal, the main pole outside is some in the storehouse determines highly to be provided with the calibration electrode, and it is connected with transmitter by the cable that is arranged in the main pole pipe respectively.
2, continuous capacitance sensor as claimed in claim 1 is characterized in that said calibration electrode is an electrode terminal, is provided with insulation spacer between itself and the main pole, and enriches space between the two by insulation spacer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 98220043 CN2323356Y (en) | 1998-01-07 | 1998-01-07 | Continuous capacitance sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 98220043 CN2323356Y (en) | 1998-01-07 | 1998-01-07 | Continuous capacitance sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2323356Y true CN2323356Y (en) | 1999-06-09 |
Family
ID=33971918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 98220043 Expired - Lifetime CN2323356Y (en) | 1998-01-07 | 1998-01-07 | Continuous capacitance sensor |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2323356Y (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102502285A (en) * | 2011-09-16 | 2012-06-20 | 中联重科股份有限公司 | Bulk machine |
CN102997971A (en) * | 2011-09-14 | 2013-03-27 | 江苏新力科技实业有限公司 | Mine-used intrinsically safe electrode type coal level sensor |
CN106643962A (en) * | 2016-11-18 | 2017-05-10 | 郑州格兰高环境工程有限公司 | Method for accurately calculating capacity of liquid in irregular tank |
-
1998
- 1998-01-07 CN CN 98220043 patent/CN2323356Y/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102997971A (en) * | 2011-09-14 | 2013-03-27 | 江苏新力科技实业有限公司 | Mine-used intrinsically safe electrode type coal level sensor |
CN102502285A (en) * | 2011-09-16 | 2012-06-20 | 中联重科股份有限公司 | Bulk machine |
CN102502285B (en) * | 2011-09-16 | 2014-02-05 | 中联重科股份有限公司 | Bulk machine |
CN106643962A (en) * | 2016-11-18 | 2017-05-10 | 郑州格兰高环境工程有限公司 | Method for accurately calculating capacity of liquid in irregular tank |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: WEIHAI BEIYANG ELECTRIC GROUP CO., LTD. Free format text: FORMER NAME OR ADDRESS: WANG QIMING; LI CHUNHE |
|
CP03 | Change of name, title or address |
Address after: 264200 Shandong province Weihai City Xinwei Road No. 33 Patentee after: Weihai Beiyang Electric Group Co., Ltd. Address before: 264200 No. 41 East Wenhua Road, Shandong, Weihai Patentee before: Wang Qiming Patentee before: Li Chunhe |
|
AV01 | Patent right actively abandoned | ||
C20 | Patent right or utility model deemed to be abandoned or is abandoned |