CN2164043Y - Neutron grain water on-line analyser - Google Patents
Neutron grain water on-line analyser Download PDFInfo
- Publication number
- CN2164043Y CN2164043Y CN 93222923 CN93222923U CN2164043Y CN 2164043 Y CN2164043 Y CN 2164043Y CN 93222923 CN93222923 CN 93222923 CN 93222923 U CN93222923 U CN 93222923U CN 2164043 Y CN2164043 Y CN 2164043Y
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- CN
- China
- Prior art keywords
- grain
- moisture content
- neutron
- gauge head
- measuring
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- Expired - Fee Related
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Abstract
The utility model relates to a measuring apparatus for the grain moisture content in the process of grain drying. The measuring apparatus is composed of the measuring head of a neutron source, a measuring cylinder, the sleeve tube of the measuring head, a grain discharging device, a signal processor and conducting wires. The measuring apparatus can carry out the on-line measurement for various grain with different moisture content in the states of the freezing and no freezing of the grain, and has the advantages of large measurement range, simple structure, high measuring precision, etc. The utility model which is a novel instrument which measures the grain moisture content dynamically can be matched with a grain drying machine to realize the automatic control of drying technology.
Description
The utility model relates to a kind of grain ' s moisture teller that is used for the grain drying process, particularly be middle minor grain moisture content on-line measurement instrument.
Grain moisture content on-line measurement instrument is that foodstuff drying device is realized the stoving process key equipment of control automatically, and this equipment does not still have desirable scheme both at home and abroad greatly so far because of accuracy requirement height, difficulty.It is former thereby fail popularization that the condenser type moisture on-line measuring instrument of developments such as the infrared-type grain moisture content on-line measurement instrument of countries such as external Denmark development and domestic Jilin University is all little because of measurement range, error reaches the freeze grain moisture etc. of state of energy measurement not greatly.
The purpose of this utility model provides a kind of energy tracking measurement foodstuff drying device go into grain and the moisture of putting out cereal, and realizes its stoving process middle minor grain moisture content on-line measurement instrument of control automatically.
Minor grain moisture content on-line measurement instrument belongs to the instrument of novel kinetic measurement grain moisture content in being somebody's turn to do, to make its fast neutron slowing down be slow neutron to consumed energy when being the hydrogen atom according to neutron bombardment material moisture, and neutron has the principle concept of its limit diffusion length to form in stablizing the grain field of flow.
This measuring instrument is made up of neutron source gauge head 1, survey tube 2, gauge head sleeve pipe 3, grain discharging device 4, signal processor 5 and lead 6, wherein neutron source gauge head 1 is an Am-Be source, its activity is the 50-80 millicurie, be installed in the central point of gauge head sleeve pipe 3, be connected with signal processor 5 by lead 6, surveying tube 2 is cylinder circular cone tube, and its diameter and significant height are 400-600mm.
Below in conjunction with accompanying drawing the utility model is elaborated:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the signal scaling curve map, i.e. the graph of relation of slow neutron signal and grain moisture content, wherein X--slow neutron number of signals; M--grain moisture content (wet basis).
Wherein neutron source gauge head 1 is an Am-Be source, and its activity is the 50-80 millicurie.Surveying tube 2 adopts sheet metal to make, be cylinder taper barrel shape, its diameter and significant height are 400-600mm, at the horizontal gauge head sleeve pipe 3 of this centre, central point at gauge head sleeve pipe 3 is equipped with neutron source gauge head 1, and it directly links to each other with signal processor 5 by lead 6.This neutron source gauge head 1 distributes neutron ray on the one hand, and other direction receives the degraded neutron signal that reflects again, and its number of signals is relevant with the grain moisture content size, and both relation curves as shown in Figure 2.Grain discharging device 4 is a grooved pulley type, and sheave drives the row's of realization flow vector by change speed motor and regulates.Signal processor 5 is made up of the from outside interface of single card microcomputer circuit, digital indicator, printing equipment and signal.
The utility model can be installed in the foodstuff drying device grain-entering mouth and put out cereal a mouthful place, when grain stream during through the survey tube 2 of this measuring instrument, slowing down is a slow neutron because the neutron ray that neutron source gauge head 1 distributes is subjected to the hydrogen atom bump of grain moisture content, receiver through neutron source gauge head 1 reclaims reflected signal again, and pass to signal processor 5 through lead 6, so just, can record its grain moisture content, and show, print to reach and signal is passed to the foodstuff drying device automatic control system by from outside interface, in time adjust the stoving process parameter, the realization stoving process is controlled automatically, reaches the desired moisture of putting out cereal.
Facts have proved that advantage of the present utility model and good effect are as follows:
1, measurement category is big, is the instrument of contactless tracking measurement grain moisture content, is not subjected to the restriction of grain moisture content scope and grain kind, can be widely used for measuring all kinds of grains with different in moisture content.
2, can grain freeze and the non-two states that freezes under measure.
3, simple in structure, easy to use, certainty of measurement height (error is ± 1%).
Claims (3)
1, minor grain moisture content on-line measurement instrument in a kind of, it is characterized in that this measuring instrument by neutron source gauge head 1, survey tube 2, gauge head sleeve pipe 3, grain discharging device 4, signal processor 5 and lead 6 and form.
2, middle minor grain moisture content on-line measurement instrument according to claim 1 is characterized in that neutron source gauge head 1 is americium one beryllium source, and its activity is the 50-80 millicurie, is installed in the central point of gauge head sleeve pipe 3, is connected with signal processor 5 by lead 6.
3, middle minor grain moisture content on-line measurement instrument according to claim 1 is characterized in that surveying tube 2 and is cylinder circular cone tube, and its diameter and significant height are 400-600mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93222923 CN2164043Y (en) | 1993-08-30 | 1993-08-30 | Neutron grain water on-line analyser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93222923 CN2164043Y (en) | 1993-08-30 | 1993-08-30 | Neutron grain water on-line analyser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2164043Y true CN2164043Y (en) | 1994-05-04 |
Family
ID=33801386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93222923 Expired - Fee Related CN2164043Y (en) | 1993-08-30 | 1993-08-30 | Neutron grain water on-line analyser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2164043Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206186B (en) * | 2007-11-27 | 2011-01-12 | 南京国晟科技有限公司 | Device for analyzing and detecting coal constituent rapidly |
| CN112345559A (en) * | 2019-08-06 | 2021-02-09 | 中国农业机械化科学研究院 | Online grain moisture detection device and detection method of combine harvester |
-
1993
- 1993-08-30 CN CN 93222923 patent/CN2164043Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206186B (en) * | 2007-11-27 | 2011-01-12 | 南京国晟科技有限公司 | Device for analyzing and detecting coal constituent rapidly |
| CN112345559A (en) * | 2019-08-06 | 2021-02-09 | 中国农业机械化科学研究院 | Online grain moisture detection device and detection method of combine harvester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |