CN201803934U - Mobile instrument for detecting concentration of potassium in brine - Google Patents
Mobile instrument for detecting concentration of potassium in brine Download PDFInfo
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- CN201803934U CN201803934U CN2010205435435U CN201020543543U CN201803934U CN 201803934 U CN201803934 U CN 201803934U CN 2010205435435 U CN2010205435435 U CN 2010205435435U CN 201020543543 U CN201020543543 U CN 201020543543U CN 201803934 U CN201803934 U CN 201803934U
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- bittern
- pulling force
- photomultiplier
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Abstract
Disclosed is a mobile instrument for detecting concentration of potassium in brine. Bismuth germinate oxide (BGO) crystal, a photomultiplier tube and a plastic scintillator are arranged inside a casing, an organic glass light guide is connected to the plastid scintillator, a handle is mounted on the upper side of the casing, a tension sensor is mounted at the lower end of the handle, and a power switch, an empty state measurement button, a brine measurement button and a liquid crystal display screen are mounted on the casing. The cylindrical plastic scintillator reduces gamma ray sensitivity, lead shielding arranged on the outer surface of the BGO crystal reduces influence of high-energy cosmic rays and environmental radiation background on measurement, and further measurement precision is improved.
Description
Technical field
The utility model relates to a kind of measuring instrument and detection method of potassium concn, relates to the instrument of potassium concn in a kind of portable portable fast detecting bittern specifically.
Background technology
Produce in the process of potash fertilizer at salt lake bittern, at first need the lake water solar evaporation simmer down to potassium concn bittern within the specific limits in the concentration basin, therefore can carry out the potassium concn of the bittern in the concentration basin regularly or irregularly detecting, to enhancing productivity, energy efficient has great importance.
In addition, behind the extraction desalination water, the remainder salt concentration increases, and is referred to as " strong brine " from seawater.The seawater of present 1 ten thousand stere can output 5 kilosteres desalination water, residue strong brine salt content will exceed one times than common seawater.Strong brine can be used for producing crude salt and uses through refining again, and remaining bittern partly also can be used further to extract elements such as potassium, magnesium, and these compositions can be used as the raw material of chemical fertilizer and are applied to agricultural.Present China is one city, Qingdao only, and the scale of desalinization in 2010 just reaches ten thousand stere every days 180,000 to 20, will reach ten thousand stere every days 350,000 to 40 to the year two thousand twenty desalinization scale.
Therefore, the bittern potassium concn in the bittern development and use process is detected, have great significance.
But the method for potassium concn mostly is gravimetric method, volumetric method or analyzes with instrument such as ion-selective electrode, atomic absorption in the analysis bittern at present commonly used, but these modes just can be analyzed after all needing bittern sampling taken back the laboratory, formality is loaded down with trivial details, the time that obtains as a result is long, can not satisfy the real-time monitoring to potassium concn in the bittern.
Still do not have at present a kind of portable, can portable fast detecting bittern in the instrument of potassium concn.
Summary of the invention
At the instrument of potassium concn in the existing bittern and the defective that detection method exists, the instrument of potassium concn in the detection bittern that the utility model provides a kind of and is easy to carry, detection speed is fast, accuracy of detection is high.
Solving the problems of the technologies described above the concrete technical measures of being taked is: a kind of portable instrument that detects potassium concn in the bittern is characterized in that:
Have groove (2) on housing (1) top, on the wall of groove (2), be shaped on spout hole (8), be equipped with BGO crystal (3) in groove (2) below, below in BGO crystal (3), be equipped with first photomultiplier (4), in the outside of BGO crystal (3) with first photomultiplier (4), the cylindric plumbous matter shielding (18) of one end sealing is housed, in the wall of groove (2), be shaped on and be cavity cylindraceous around groove, be built-in with cylindrical plastic scintillator (5) at cavity, connect organic glass light guides (6) in the lower end of plastic scintillant (5), the lower end of organic glass photoconduction (6) connects second photomultiplier (7), top in housing (1), the handle (9) of band hook is housed, in handle (9) lower end first pulling force sensor (10) and second pulling force sensor (11) are housed, the lower end of first pulling force sensor (10) and second pulling force sensor (11) is connected with housing (1), in housing (1), be positioned at the below of shielding (18), appliance circuit (12) and battery (13) are housed, power switch (14) is housed on the outer wall of housing (1), empty state is measured button (15), bittern is measured button (16) and LCDs (17).
The beneficial effects of the utility model: because occurring in nature exists a large amount of high energy cosmic rayss and environmental radiation background, these all can bring interference to independent gamma-rays or β ray detection, influence measuring accuracy.
The BGO crystal that employing has higher detection efficiency to gamma-rays can reduce the thickness of crystal significantly, simultaneously plastic scintillant is made cylindric, be looped around the bittern sample around, make that the one-piece construction of instrument is compact more.And adopt the teflon material to make instrument housing, and then can better avoid the corrosion of bittern to the instrument surface, prolong the serviceable life of instrument.
Because the range of alpha ray in solid matter generally has only several microns, can be shielded by instrument housing fully, and plastic scintillant becomes approach cylindric, make plastic scintillant reduce greatly to gamma-ray susceptibility, what guaranteed that plastic scintillant receives almost is the β ray all, reduce incoherent alpha ray and gamma-rays to the interference that measurement brings, improved measuring accuracy.
Be provided with plumbous matter shielding in the outside of the BGO crystal and first photomultiplier, can be good at reducing universe high-energy ray and of the influence of environmental radiation background, make gamma-rays that the BGO crystal receives mainly from the bittern of surveying cavity the place ahead to measuring.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the profile synoptic diagram of organic glass photoconduction in the utility model.
Among the figure: 1 instrument housing, 2 grooves, 3BGO crystal, 4 first photomultipliers, 5 plastic scintillants, 6 organic glass photoconductions, 7 second photomultipliers, 8 spout holes, 9 handles, 10 first pulling force sensors, 11 second pulling force sensors, 12 appliance circuits, 13 batteries, 14 power switches, 15 empty states are measured button, 16 bittern are measured button, 17 LCDs, 18 plumbous matter shieldings.
Embodiment
Be described with reference to the accompanying drawings instrument structure of the present utility model and using method.
At present, the isotope that metallic potassium has been found one has 25 kinds of isotopes from K-32 to K-55, but the potassium that exists under field conditions (factors) has three kinds of isotopes, is respectively K-39, K-40, K-41.Wherein K-39 and K-41 are stable isotope, do not have radioactivity.K-40 then is non-stable isotope, and can radiate continuum β ray and the energy that highest energy is 1.33MeV by decay is the gamma-rays of 1.46MeV.And the abundance of K-40 in natural potassium is 0.012%, is a constant amount.What of K-40 in the bittern we can be by measuring like this, and then infer that the concentration of potassium element in the bittern comes.
The instrument of potassium concn is as shown in Figure 1 in a kind of portable detection bittern:
Instrument housing 1 adopts teflon to make, and is whole cylindrical.At the top of housing, be shaped on a cylinder shape groove 2, the internal volume of groove 2 is that diameter 10cm, the degree of depth are 13cm.Apart from the place of instrument housing top 1.5cm, having a diameter is the spout hole 8 of 1cm on the wall of groove 2.
Below enclosure interior groove 2, be equipped with the BGO crystal 3, the diameter of BGO crystal 3 is 10cm, thickness is 5cm.Below the BGO crystal 3, be equipped with first photomultiplier 4, between first photomultiplier 4 and BGO crystal 3, scribble optics silicone oil and close proximity.In the periphery of BGO crystal 3, first photomultiplier 4,, be enclosed with reflective (or white diffuse reflection) film of minute surface and black shading film from inside to outside successively according to usual manner.
The outside at BGO crystal 3, first photomultiplier 4, the thick plumbous matter shielding 18 of 3mm is installed, this lead matter shielding is the cylindric of end sealing, and except the BGO crystal 3 opened wide over against the direction of groove 2, plumbous matter shielding 18 wrapped the BGO crystal 3 and first photomultiplier 4 fully.
At the lower position of spout hole 8, in the wall of groove 2, be shaped on and be cavity cylindraceous around groove; Within cavity, be equipped with plastic scintillant 5, plastic scintillant 5 is solidified into cylindrical shape by the technology of casting, and barrel bore is that 11cm, thickness are that 10mm, length are 10cm, is embedded in enclosure interior around groove 2.Be connected to organic glass photoconduction 6 in the lower end of plastic scintillant, as shown in Figure 2, it is circular that the upper end of organic glass photoconduction 6 becomes, and its internal diameter, thickness are identical with internal diameter, the thickness of plastic scintillant; It is cylindric that the lower end of organic glass photoconduction 6 becomes, and radius is 13mm, and is identical with the radius of second photomultiplier 7.The lower end of organic glass photoconduction 6 is connected to second photomultiplier 7.Between plastic scintillant 5 and organic glass photoconduction 6, scribble optics silicone oil and closely contact.Between organic glass photoconduction 6 and second photomultiplier 7, scribble optics silicone oil and closely contact.In the periphery of plastic scintillant 5, organic glass photoconduction 6, second photomultiplier 7,, be enclosed with reflective (or white diffuse reflection) film of minute surface and black shading film from inside to outside successively according to usual manner.
Above housing 1, the handle 9 of a band hook is arranged, link to each other with housing 1 by first pulling force sensor 10, second pulling force sensor 11.
In housing 1, be positioned at the below of shielding 18, appliance circuit 12 and battery 13 are housed, and appliance circuit 12 is made up of following electronic unit functional module: power module, clock module, the first photomultiplier tube signal processing module, the second photomultiplier tube signal processing module, the first pulling force sensor signal processing module, the second pulling force sensor signal processing module, data memory module, central information processing module and LCDs driver module.The concrete function that this each module can realize as required, designed and produce by having in the industry that associated electrical gains knowledge the personage.
On the outer wall of the position of portion on the lower side of housing 1, be equipped with that power switch 14, empty state are measured button 15, bittern is measured button 16 and LCDs 17.
The principle of work of this instrument is:
The gamma-rays that K-40 radiated in the bittern is received by the BGO crystal, makes the BGO crystal be excited to produce fluorescence; This fluorescence is through finally being received by first photomultiplier after the repeatedly reflection of reflective film and it being converted into electric signal; Under the effect of this electric signal through the first photomultiplier tube signal processing module in the appliance circuit, the amplitude that finally is converted into becomes the pulse signal of certain linear relationship with the incident energy of, and by to be screened out wherein corresponding energy be the gamma-ray pulse signal of 1.46MeV, carry out stored count.
The β ray that K-40 radiated in the bittern is received by plastic scintillant, plastic scintillant is excited and produces fluorescence; This fluorescence is finally received and is converted into electric signal by second photomultiplier through the guiding and the reflex of organic glass photoconduction and reflective film; Under the effect through the second photomultiplier tube signal processing module in appliance circuit of this electric signal, finally be converted into pulse signal and carry out stored count, what of β ray number that plastic scintillant receives what of this counting reflected.
First pulling force sensor is converted into voltage signal output with the pulling force that is subjected to, effect through the first pulling force sensor signal processing module in the appliance circuit, the voltage/frequency translation circuit of this voltage signal by routine is converted into frequency and the proportional pulse signal of voltage, and carries out stored count.
Second pulling force sensor is converted into voltage signal output with the pulling force that is subjected to, effect through the second pulling force sensor signal processing module in the appliance circuit, the voltage/frequency translation circuit of this voltage signal by routine is converted into frequency and the proportional pulse signal of voltage, and carries out stored count.
Claims (1)
1. portable instrument that detects potassium concn in the bittern, it is characterized in that: have groove (2) on housing (1) top, on the wall of groove (2), be shaped on spout hole (8), be equipped with BGO crystal (3) in groove (2) below, below in BGO crystal (3), be equipped with first photomultiplier (4), in the outside of BGO crystal (3) with first photomultiplier (4), the cylindric plumbous matter shielding (18) of one end sealing is housed, in the wall of groove (2), be shaped on and be cavity cylindraceous around groove, be built-in with cylindrical plastic scintillator (5) at cavity, connect organic glass light guides (6) in the lower end of plastic scintillant (5), the lower end of organic glass photoconduction (6) connects second photomultiplier (7), top in housing (1), the handle (9) of band hook is housed, in handle (9) lower end first pulling force sensor (10) and second pulling force sensor (11) are housed, the lower end of first pulling force sensor (10) and second pulling force sensor (11) is connected with housing (1), in housing (1), be positioned at the below of shielding (18), appliance circuit (12) and battery (13) are housed, power switch (14) is housed on the outer wall of housing (1), empty state is measured button (15), bittern is measured button (16) and LCDs (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205435435U CN201803934U (en) | 2010-09-27 | 2010-09-27 | Mobile instrument for detecting concentration of potassium in brine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205435435U CN201803934U (en) | 2010-09-27 | 2010-09-27 | Mobile instrument for detecting concentration of potassium in brine |
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| CN201803934U true CN201803934U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205435435U Expired - Lifetime CN201803934U (en) | 2010-09-27 | 2010-09-27 | Mobile instrument for detecting concentration of potassium in brine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975737A (en) * | 2010-09-27 | 2011-02-16 | 丹东东方测控技术有限公司 | Instrument for movably detecting potassium concentration in brine and detection method |
| CN103901051A (en) * | 2014-03-07 | 2014-07-02 | 中国科学院青海盐湖研究所 | Single-path potassium measuring instrument based on beta rays |
| CN104833779A (en) * | 2015-05-29 | 2015-08-12 | 四川东坡中国泡菜产业技术研究院 | Detection method of high-quality pickle brine |
| CN105487100A (en) * | 2015-12-31 | 2016-04-13 | 中国科学院青海盐湖研究所 | Fixed-type plastic crystal potassium tester |
-
2010
- 2010-09-27 CN CN2010205435435U patent/CN201803934U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975737A (en) * | 2010-09-27 | 2011-02-16 | 丹东东方测控技术有限公司 | Instrument for movably detecting potassium concentration in brine and detection method |
| CN103901051A (en) * | 2014-03-07 | 2014-07-02 | 中国科学院青海盐湖研究所 | Single-path potassium measuring instrument based on beta rays |
| CN104833779A (en) * | 2015-05-29 | 2015-08-12 | 四川东坡中国泡菜产业技术研究院 | Detection method of high-quality pickle brine |
| CN105487100A (en) * | 2015-12-31 | 2016-04-13 | 中国科学院青海盐湖研究所 | Fixed-type plastic crystal potassium tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110420 Effective date of abandoning: 20120523 |