CN108318536B - Intelligent on-line analyzer probe - Google Patents
Intelligent on-line analyzer probe Download PDFInfo
- Publication number
- CN108318536B CN108318536B CN201810108580.4A CN201810108580A CN108318536B CN 108318536 B CN108318536 B CN 108318536B CN 201810108580 A CN201810108580 A CN 201810108580A CN 108318536 B CN108318536 B CN 108318536B
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- China
- Prior art keywords
- probe
- intelligent
- circuit board
- storage circuit
- intelligent storage
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- 239000000523 sample Substances 0.000 title claims abstract description 144
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000003860 storage Methods 0.000 claims abstract description 22
- 210000004907 gland Anatomy 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- 239000002253 acid Substances 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract description 3
- 238000012824 chemical production Methods 0.000 abstract description 3
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract 1
- 238000003825 pressing Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 7
- 230000010287 polarization Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/045—Circuits
- G01N27/046—Circuits provided with temperature compensation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/028—Circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/048—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance for determining moisture content of the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
- G01N27/07—Construction of measuring vessels; Electrodes therefor
Abstract
An intelligent on-line analyzer probe relates to a conductivity probe, which mainly comprises a probe, a temperature measuring element, a probe seat and an intelligent storage circuit board; the probe penetrates through the probe rod to be fixed, and is contacted with a measured medium through the waist-shaped opposite perforation on the probe rod, the temperature measuring element is arranged in the probe and is close to the front end to measure the temperature of the medium, and the intelligent storage circuit board for storing parameters is arranged in the probe gland; the probe is connected with the measuring instrument by adopting a twelve-core shielded cable, when the probe is connected with the instrument to complete the electrification of the instrument, the instrument automatically reads parameter data in the intelligent chip of the probe, and the probe is automatically matched without manually adjusting the instrument parameters; the probe is made of a metal Pt material, and other devices in contact with a detected medium are made of polytetrafluoroethylene materials; the probe adopts a multiple anti-leakage sealing design. The intelligent online analyzer probe is safe, reliable, intelligent, resistant to strong acid and alkali media, long in service life and suitable for being used in special environments such as strong acid and alkali media in the field of chemical production.
Description
Technical Field
The invention relates to on-line measurement, in particular to on-line analysis of strong acid and strong base media.
Background
At present, the method is widely applied to the chemical production and sewage treatment industries through measuring the moisture content of the medium or the concentration of the medium through the conductivity, and greatly facilitates the requirements of people on product quality control and environmental pollution discharge.
The principle of measuring the moisture content or the concentration of the medium through the conductivity is to input a data table of the conductivity of the measured medium and the concentration of the medium into an instrument by utilizing the principle that the concentration of the medium and the conductivity have a certain corresponding relation, then the conductivity of the measured medium is measured by the instrument, and the measured medium is converted into the concentration value of the medium in the instrument through a table look-up mode.
The traditional conductivity meter probe generally adopts a double-electrode structure, is made of PVC plastic, adopts platinum black as an electrode and adopts threaded connection. The defects of inaccurate measurement, incapability of being used for strong corrosion media, easiness in damage, low on-line measurement pressure resistance of the probe, manual input of electrode parameters during probe replacement and the like caused by electrode polarization exist.
Disclosure of Invention
The invention provides a strong corrosion resistant medium online measuring probe which has high voltage resistance, is safe and reliable, is not easy to damage, is intelligent, has long service life, eliminates electrode polarization and improves measuring precision, does not need to manually input electrode parameters when replacing the probe, and is suitable for special industries such as chemical production, sewage treatment industry and the like.
The invention discloses an intelligent online analyzer probe which mainly comprises a probe (14), a probe (11), a temperature measuring element (12), a probe fixing seat (9), an intelligent storage circuit board (3), a probe lower seal (13), a probe upper seal cap (7), a flange seal gasket (10), a probe upper seal gland (6), a seal screw fixing plate (5), a threading connecting cylinder (2) and a twelve-core shielding lead (1). Wherein the probe (14) passes through the lower probe seal (13) to form a tight fit seal; the probe lower seal (13) penetrates into four through holes in the probe (11) from bottom to top to form step tight fit seal; the lead of the probe (14) passes through the upper sealing cap (7) of the probe and then passes through the upper sealing gland (6) of the probe and the sealing screw fixing plate (5); the probe (11) penetrates through a through hole of the probe fixing seat (9), then the pressing cap (4) is covered, four fixing screws penetrate through screw holes of the pressing cap (4) and are screwed to the probe fixing seat (9), and the probe (11) is pressed on the probe fixing seat (9) to form pressing seal; then screwing the inner hexagonal screw into the sealing screw fixing plate (5), and screwing the screw on the sealing screw fixing plate (5) to tightly press the upper sealing cap (7) of the probe on the probe (11) to form compression sealing; the probe (11) is inserted into the probe fixing seat (9) for installation, and then a sealing gasket (10) is sleeved on the probe, the rear end of the probe is provided with a labyrinth concave surface, a labyrinth convex surface is arranged on the sealing gasket (10), and the convex surface of the sealing gasket (10) is pressed into the concave surface of the probe (11) to form labyrinth seal; the probe (14) is inserted into a probe fixing cap (15), the probe fixing cap (15) and the probe (11) are fixed by adopting a pin, and the probe (14) is contacted with a medium to be detected through a channel formed by 3 pairs of kidney-shaped opposite through holes on a probe rod; a lead of the probe (14) is welded on the intelligent storage circuit board (3), the temperature measuring element (12) is inserted into a blind hole in the center of the probe (11), and a lead of the temperature measuring element (12) is welded on the intelligent storage circuit board (3); the intelligent storage circuit board (3) is arranged in the threading connecting cylinder (2); one end of the twelve-core shielding lead (1) is welded on the intelligent storage circuit board (3), and the other end of the twelve-core shielding lead (1) is connected with the measuring instrument by adopting a 12-core joint.
In the invention, 4 electrodes consisting of 4 probes (14) are used for contacting a measured medium, 1 pair of electrodes is used for connecting a square wave driving voltage signal, and the other 1 pair of electrodes is used for detecting a signal voltage, so that the measurement error of a double-electrode structure caused by the electrode polarization phenomenon can be effectively eliminated, and the measurement precision is improved; the temperature measuring element (12) is used for measuring the temperature change of the medium in real time, temperature compensation is carried out on the measured value in time, the influence of the temperature change is eliminated, and the measuring precision is further improved. Parts, such as the 4 probes (14), which are in contact with a medium, of the platinum Pt, other probes (11), a flange sealing gasket (10), a probe fixing cap (15), a probe lower seal (13) and the like are all made of polytetrafluoroethylene materials, and the probe lower seal structure is particularly suitable for being used in a strong corrosive medium environment. Multiple anti-leakage sealing treatment is adopted, the probe is connected by a flange, and the device is suitable for measurement occasions where the medium has certain pressure. The intelligent design is adopted, the relevant parameters of the probe are stored through the embedded storage chip of the probe, the instrument automatically reads the parameters when the probe is replaced, and the setting is intelligent.
The invention has the beneficial effects that: 4 electrodes consisting of 4 probes (14) are used for contacting a measured medium, so that the measurement error of a double-electrode structure caused by the electrode polarization phenomenon can be effectively eliminated, and the measurement precision is improved; the temperature measuring element (12) is adopted to compensate the temperature of the measured value in time, and the influence of temperature change is eliminated. The intelligent online analyzer probe is safer and more reliable, has longer service life and intelligent use, and is more suitable for special environments such as strong corrosive media, medium pressure and the like.
Drawings
FIG. 1 is a schematic diagram of an intelligent on-line analyzer probe according to the present invention.
FIG. 2 is a schematic circuit diagram of the intelligent on-line analyzer probe of the present invention.
FIG. 3 is a view of the structure of the sealing cap on the probe.
In the figure: 1. twelve-core shielding lead, 2-threading connecting cylinder, 3-intelligent storage circuit board, 4-pressing cap, 5-sealing screw fixing plate, 6-probe upper sealing gland, 7-probe upper sealing cap, 8-probe flange, 9-probe fixing seat, 10-flange sealing gasket, 11-probe, 12-temperature measuring element, 13-probe lower sealing, 14-probe and 15-probe fixing cap.
Detailed Description
Example 1 in the embodiment of fig. 1, the probe (14) passes through the probe lower seal (13) to form an interference fit, forming a tight-fit seal; the probe lower seal (13) penetrates into the stepped surfaces of the four through holes in the probe (11) from bottom to top, and the tolerance between the inner diameters of the four through holes and the outer diameter of the lower seal (13) is assembly interference to form stepped tight-fit seal; the lead of the probe (14) passes through the upper sealing cap (7) of the probe and then passes through the upper sealing gland (6) of the probe and the sealing screw fixing plate (5); the probe (11) penetrates through a through hole of the probe fixing seat (9), then the pressing cap (4) is covered, four fixing screws penetrate through screw holes of the pressing cap (4) and are screwed to the probe fixing seat (9), and the probe (11) is pressed on the probe fixing seat (9) to form pressing seal; then screwing the inner hexagonal screw into the sealing screw fixing plate (5), screwing the screw on the sealing screw fixing plate (5) to press the upper sealing gland (6) of the probe downwards, and pressing the upper sealing cap (7) of the probe on the 4 through holes of the probe (11) to form compression sealing; the probe (11) is inserted into the probe fixing seat (9) for installation, and then a sealing gasket (10) is sleeved on the probe, the rear end of the probe is provided with a labyrinth concave surface, a labyrinth convex surface is arranged on the sealing gasket (10), and the convex surface of the sealing gasket (10) is pressed into the concave surface of the probe (11) to form labyrinth seal; the probe (14) is inserted into a probe fixing cap (15), the probe fixing cap (15) and the probe (11) are fixed by adopting a pin, and the probe (14) is contacted with a medium to be detected through a channel formed by 3 pairs of kidney-shaped opposite through holes on a probe rod; a lead of a probe (14) is welded on the intelligent storage circuit board (3), a temperature measuring element (12) is inserted into the bottom in a central blind hole of the probe (11) and is used for measuring the actual temperature of a medium, and the lead of the temperature measuring element (12) is welded on the intelligent storage circuit board (3); the intelligent storage circuit board (3) is arranged in the threading connecting cylinder (2); one end of the twelve-core shielding lead (1) is welded on the intelligent storage circuit board (3), and the other end of the twelve-core shielding lead (1) is connected with the measuring instrument. Four probes (14) respectively form four electrodes A, B, C and D.
In the embodiment, an upper sealing cap (7) of the probe, a flange sealing gasket (10), the probe (11), a lower sealing cap (13) of the probe and a probe fixing cap (15) are made of strong acid and strong alkali resistant polytetrafluoroethylene materials; the threading connecting cylinder (2), the pressing cap (4), the sealing screw fixing plate (5), the sealing pressing cover (6) on the probe, the probe fixing seat (9) and the probe flange (8) are made of 304 stainless steel; the probe (14) is made of platinum Pt material.
Example 2 in the embodiment of fig. 2 and 3, the chip U1 is an EEPROM memory, model M24C01BN6, DIP8 package; r1 and R2 are 1/8W at 10kΩA resistance; the temperature measuring element (12) adopts a PT100 temperature measuring resistor; the U1 power supply end has 8 pins connected to the positive end of the power supply and 7 pinsWCThe R1 is connected for constant read-write control of the instrument to U1, the SCL of the 6 feet is a serial clock, the SDA of the 5 feet is serial data/address and is connected with the positive end of a power supply through a resistor R2, and the 1/2/3/4 foot is connected with the ground end of the power supply. The intelligent storage circuit board is made of a 2800mil and 850mil single-sided epoxy circuit board. And the phi 1mm heat-shrinkable tube on the electrode lead sleeve is insulated and then welded to the intelligent storage circuit board. Three leads of the temperature measuring element (12) are welded to the intelligent storage circuit board. The twelve-core shielded wire connection is the same as that of the first embodiment and will not be described again.
Claims (3)
1. An intelligent online analyzer probe is characterized by mainly comprising a probe (14), a probe (11), a temperature measuring element (12), a probe fixing seat (9), an intelligent storage circuit board (3) and a twelve-core shielding lead (1), wherein the probe (14) penetrates through a probe lower seal (13) to form tight fit seal; the probe lower seal (13) penetrates into four through holes in the probe (11) from bottom to top to form step tight fit seal; the lead of the probe (14) passes through the upper sealing cap (7) of the probe and then passes through the upper sealing gland (6) of the probe and the sealing screw fixing plate (5); the probe (11) is inserted into the probe fixing seat (9) for installation, and then a sealing gasket (10) is sleeved on the probe, the rear end of the probe is provided with a labyrinth concave surface, a labyrinth convex surface is arranged on the sealing gasket (10), and the convex surface of the sealing gasket (10) is pressed into the concave surface of the probe (11) to form labyrinth seal; the probe (14) is inserted into a probe fixing cap (15), the probe fixing cap (15) and the probe (11) are fixed by adopting a pin, and the probe (14) is contacted with a medium to be detected through a channel formed by 3 pairs of kidney-shaped opposite through holes on a probe rod; a lead of the probe (14) is welded on the intelligent storage circuit board (3), the temperature measuring element (12) is inserted into a blind hole in the center of the probe (11), and a lead of the temperature measuring element (12) is welded on the intelligent storage circuit board (3); the intelligent storage circuit board (3) is arranged in the threading connecting cylinder (2); one end of the twelve-core shielding lead (1) is welded on the intelligent storage circuit board (3), and the other end of the twelve-core shielding lead (1) is connected with the measuring instrument.
2. An intelligent on-line analyzer probe according to claim 1, wherein the probe (14) is composed of four electrodes.
3. An intelligent on-line analyzer probe according to claim 1, wherein the intelligent storage circuit board (3) is installed in the threading connecting cylinder (2) and connected with the secondary measuring instrument through a twelve-core shielded conductor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810108580.4A CN108318536B (en) | 2018-02-02 | 2018-02-02 | Intelligent on-line analyzer probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810108580.4A CN108318536B (en) | 2018-02-02 | 2018-02-02 | Intelligent on-line analyzer probe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108318536A CN108318536A (en) | 2018-07-24 |
| CN108318536B true CN108318536B (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810108580.4A Active CN108318536B (en) | 2018-02-02 | 2018-02-02 | Intelligent on-line analyzer probe |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200972465Y (en) * | 2006-11-16 | 2007-11-07 | 中国科学院南京土壤研究所 | Four-electrode soil salt investigating sensor |
| CN101828107A (en) * | 2007-10-19 | 2010-09-08 | 哈赫公司 | Multiple-electrode ionic probe |
| CN102590286A (en) * | 2012-02-28 | 2012-07-18 | 吉林大学 | Four-electrode testing device and measuring method for water content of tobacco |
| CN104459332A (en) * | 2013-09-12 | 2015-03-25 | 恩德莱斯和豪瑟尔测量及调节技术分析仪表两合公司 | Method for contacting at least two metal electrodes and arrangement |
| WO2015091452A1 (en) * | 2013-12-20 | 2015-06-25 | Areva | Probe for measuring conductivity at high pressure and high temperature |
| CN205138650U (en) * | 2015-11-19 | 2016-04-06 | 浙江维思无线网络技术有限公司 | Integration wireless cable temperature sensor |
-
2018
- 2018-02-02 CN CN201810108580.4A patent/CN108318536B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200972465Y (en) * | 2006-11-16 | 2007-11-07 | 中国科学院南京土壤研究所 | Four-electrode soil salt investigating sensor |
| CN101828107A (en) * | 2007-10-19 | 2010-09-08 | 哈赫公司 | Multiple-electrode ionic probe |
| CN102590286A (en) * | 2012-02-28 | 2012-07-18 | 吉林大学 | Four-electrode testing device and measuring method for water content of tobacco |
| CN104459332A (en) * | 2013-09-12 | 2015-03-25 | 恩德莱斯和豪瑟尔测量及调节技术分析仪表两合公司 | Method for contacting at least two metal electrodes and arrangement |
| WO2015091452A1 (en) * | 2013-12-20 | 2015-06-25 | Areva | Probe for measuring conductivity at high pressure and high temperature |
| CN205138650U (en) * | 2015-11-19 | 2016-04-06 | 浙江维思无线网络技术有限公司 | Integration wireless cable temperature sensor |
Non-Patent Citations (1)
| Title |
|---|
| 一种四电极电导率传感器的研制;李学胜 等;《传感器与微系统》;20130228;第32卷(第2期);第105-107页 * |
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| CN108318536A (en) | 2018-07-24 |
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Effective date of registration: 20231211 Address after: No. 12-1, Building 8, No. 2 Tianxing Road, Yangjiaping, Jiulongpo District, Chongqing, 400000 Patentee after: Chongqing McKayway Environmental Protection Technology Co.,Ltd. Address before: 324000, Room 602, Unit 2, Building 4, Yuandingxin Village, Hehua Fourth Road, Kecheng District, Quzhou City, Zhejiang Province Patentee before: Zhang Lihong |
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