CN207832730U - Online PH combination electrodes fluctuation optimization structure - Google Patents
Online PH combination electrodes fluctuation optimization structure Download PDFInfo
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- CN207832730U CN207832730U CN201721476980.8U CN201721476980U CN207832730U CN 207832730 U CN207832730 U CN 207832730U CN 201721476980 U CN201721476980 U CN 201721476980U CN 207832730 U CN207832730 U CN 207832730U
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- reaction kettle
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Abstract
The utility model discloses a kind of online PH combination electrodes fluctuation optimization structures, include the PH combination electrodes with measuring electrode, reference electrode and electrode signal line, pH value detection is carried out to solution in reaction kettle by the PH combination electrodes, electrode signal line includes signal transmitting layer and around the shielded layer for being located at signal transmitting layer outer circumferential and being coaxially disposed with signal transmitting layer, one end of signal transmitting layer is connected to measuring electrode, the other end is connected to external signal receiving terminal, described shielded layer one end is connected to reference electrode, other end ground connection setting.The utility model is simple in structure by the way that shielding layer grounding to be substantially eliminated to the fluctuation of PH in reaction kettle, and has significant effect.
Description
Technical field
The utility model is related to a kind of online PH combination electrodes more particularly to a kind of online PH combination electrodes fluctuation optimization knots
Structure.
Background technology
Currently, in reaction kettle production, it usually needs be detected to the pH value of solution in kettle, and add liquid caustic soda control PH
Value stabilization is in a certain range.But the PH of prior art meters usually exist complicated, stability is low, maintenance cost is high,
The problems such as stain resistance is low.
In order to solve the above-mentioned technical problem, people have carried out long-term exploration, such as Chinese patent discloses a kind of industry
Waste water monitors pH combination electrode [application numbers on-line：CN201620863616.6], including a shell, it is characterised in that：The shell
It is provided with electro-insulating rubber sealing ring at the top of body, electrode outlet line is provided on the insulated enclosure circle, the enclosure interior is set
It is equipped with Ag/AgCl measuring electrodes that are arranged in parallel and being separately connected with electrode outlet line and Ag/AgCl reference electrodes, the Ag/
AgCl measuring electrodes are arranged in measuring electrode glass bushing, and phosphate/chlorination is filled in the measuring electrode glass bushing
Potassium filling liquid, the Ag/AgCl reference electrodes are arranged in reference electrode glass bushing, the measuring electrode glass bushing and ginseng
Top than electrode glass casing is each attached on glass fibre fixinig plate, the glass fibre fixinig plate and insulated enclosure circle it
Between be packaged with potting resin, the enclosure interior is filled with colloid reference liquid, and the housing bottom is provided with high density ceramic circle.
Said program is compared by using the encapsulating structure of improvement with existing electrode more to be stablized with current potential when measuring,
The advantages that reproducibility is more preferable, some products regarding to the issue above also list successively in addition, such as plum Teller Inpro4260I/
SG/120 digital electrodes, it has many advantages, such as simple in structure, integration degree and stain resistance is high likes by user, but this
The detected solution of kind product is grounded, and when solution is equal with outer solution pH value in reference electrode, glass-film both sides potential difference should be
Zero, but the electromagnetic interferences equipment such as frequency conversion equipment, Non-polarized lamp has been gathered in workshop in actual use, it is most likely that in reference
An extremely low alternating electromotive force is superimposed between electrode and measuring electrode, to generate pH value fluctuation, no decree technique productions
Satisfied, in order to solve stability problem, we use, and to kettle electrode, through repeatedly demarcating, changing, electrode, to change electrode wires, transmitter defeated
Go out signal and installs isolated gate, reaction kettle installation ground connection etc. measure additional, but fluctuation does not still reach requirement, and stability is too low
Consequence can exactly cause reaction kettle to stop kettle for a long time, bring irremediable loss.
Utility model content
The purpose of this utility model is in view of the above-mentioned problems, offer is a kind of simple in structure, and the online PH for improving stability is multiple
Composite electrode fluctuation optimization structure.
In order to achieve the above objectives, the utility model uses following technical proposal：
A kind of online PH combination electrodes fluctuation optimization structure, including with measuring electrode, reference electrode and electrode signal line
PH combination electrodes, by the PH combination electrodes in reaction kettle solution carry out pH value detection, the electrode signal line include letter
Number transport layer and around the shielded layer for being located at signal transmitting layer outer circumferential and being coaxially disposed with signal transmitting layer, the signal passes
One end of defeated layer is connected to measuring electrode, and the other end is connected to external signal receiving terminal, and described shielded layer one end is connected to ginseng
Than electrode, other end ground connection setting.
Through the above technical solutions, reference electrode is carried out ground connection setting, avoid depositing between reference electrode and measuring electrode
In the potential difference of distortion, PH fluctuations can be made to keep within the allowable range.
In above-mentioned online PH combination electrodes fluctuation optimization structure, the ground terminal of the shielded layer is connected to reaction kettle
The earth point outlet of instrument box, the shielded layer are grounded by the earth point outlet.
In above-mentioned online PH combination electrodes fluctuation optimization structure, reaction kettle is corresponded in the reaction kettle instrument box
Each outlet on instrument box is provided with controller, the signal receiving end of external signal receiving terminal device in order to control.
In above-mentioned online PH combination electrodes fluctuation optimization structure, the output end of the electrode signal line is connected with ginseng
Number transmitter.
In above-mentioned online PH combination electrodes fluctuation optimization structure, the parameter transmitter is become using M800 multi-parameters
Send device.
In above-mentioned online PH combination electrodes fluctuation optimization structure, which is characterized in that the PH combination electrodes use
Plum Teller Inpro4260I/SG/120 digital electrodes.
In above-mentioned online PH combination electrodes fluctuation optimization structure, which is characterized in that the reaction kettle passes through outside it
The Steel Structure and grounding body in portion are grounded, to make solution in reaction kettle be in ground state.
The online PH combination electrodes fluctuation optimization structure of the utility model has the following advantages compared to the prior art：1, structure
Simply, easy to make, significant effect；2, full by making the PH fluctuation ranges on reaction kettle be substantially reduced the ground connection of shielded layer
Sufficient production requirement；3, it solves the influence that external disturbance measures PH, improves the anti-interference ability of PH combination electrodes, to stablize
Production.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Reference numeral：Electrode tip 1；Electrode signal line 2；Signal transmitting layer 21；Shielded layer 22；External signal receiving terminal 3；Instead
Answer kettle instrument box 4；Earth point outlet 41；Reaction kettle 5.
Specific implementation mode
It is the preferred embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
Embodiment one
As shown in Figure 1, the online PH combination electrodes fluctuation optimization structure of the present embodiment includes with measuring electrode, reference electricity
The PH combination electrodes of pole and electrode signal line 2, measuring electrode are integrated in reference electrode in electrode tip 1, electrode signal line 2 from this
It is drawn on electrode tip 1, when coming into operation, electrode tip 1 stretches into reaction kettle 5, by the PH combination electrodes to solution in reaction kettle 5
Carry out pH value detection, electrode signal line 2 includes signal transmitting layer 21 and around being located at 21 outer circumferential of signal transmitting layer and and signal
The shielded layer 22 that transport layer 21 is coaxially disposed, one end of signal transmitting layer 21 are connected to measuring electrode, and the other end is connected to outside
Signal receiving end 3,22 one end of shielded layer are connected to reference electrode, other end ground connection setting.Specifically, the ground terminal of shielded layer 22
It is connected to the earth point outlet 41 of reaction kettle instrument box 4, shielded layer 22 is grounded by the earth point outlet 41.
Specifically, each outlet on reaction kettle instrument box 4 is provided with controller in reaction kettle instrument box 4,
The signal receiving end of the device in order to control of external signal receiving terminal 3.
The PH combination electrodes of the present embodiment use simple in structure, integration degree and the high plum Teller of stain resistance
Inpro4260I/SG/120 digital electrodes, SG indicate detected solution ground connection, are grounded especially by reaction kettle 5 that reaction kettle 5 is again logical
Its external Steel Structure and grounding body ground connection are crossed, to make solution in reaction kettle 5 be in ground state, plum Teller
Inpro4260I/SG/120 digital electrodes be technical field personnel's well-known devices, concrete structure here without
It repeats.
Prior art plum Teller Inpro4260I/SG/120 digital electrodes are in use since solution ground makes measurement
On electrode with interference signal (and impedance ground is required in high frequency lower, conventional power frequency detection impedance ground is normal, but
Then there is higher impedance under high frequency；, and reference electrode is floating ground, causes to lose between reference electrode and measuring electrode genuine
Potential difference.The reason of using NCM solution explanation to lead to potential difference below：NCM solution, which is flowed into from pvc pipe in kettle, will produce electrostatic electricity
Lotus (generally positive charge；And bring into metal reaction kettle 5, there is forward migration in the potential of measuring electrode, so that measuring electricity
There is overgauge in gesture, and corresponding pH value becomes smaller.
In order to which the effect of the utility model is better described, the knot tested before and after being grounded to reference electrode is shown below
Fruit：It is the state of the prior art first, solution pH value off-line test is about 11 in reaction kettle 5, and on-line measurement becomes 9.7, and deposits
It is fluctuating, cannot be started up；Install 22 (reference electrode of shielded layer additional；After ground connection, PH moments rise to 10.61, every when by 25 degrees Celsius
1 unit PH corresponds to 59.16mV conversions, about differs 53mV, and the electricity of shielded layer 22 and instrument box earthing of casing end is surveyed with multimeter
Pressure, is fluctuated between 55~77mV, and electrode wires shielded layer 22 is positive potential, and real data, which has also been confirmed in reaction kettle 5, to be existed
A small amount of electrostatic positive charge, when be added be grounded after, the positive potential of effect largely disappears, electrode potential to negative offset,
Exactly elimination or the close potential difference for eliminating distortion.
In addition, same experiment has also been made to other reaction kettles 5, experiment proves：After having installed the ground connection of shielded layer 22 additional, fluctuation
Situation is clearly better.Prove that waveform is clearly better after further opening kettle operation, the PH controls that can be relatively stablized, by longitudinal axis PH
Value is arranged 10.4~10.5, and 24 hours horizontal axis periods were observed, and worked well, and reaches technological requirement, fluctuation less than ±
0.02, meet requirement.
Operation principle：
PH value is the negative logarithm PH=-logaH+ of hydrogen ion activity in solution, and the theoretical core of PH electrodes is this spy of energy
Equation；
E=E0-SPH calculates slope S=59.16mV/PH at 25 DEG C；
PH measures the chemical cell that is made up of measuring electrode and reference electrode to complete, measuring electrode to the hydrogen of solution from
Sub- activity has response, electrode potential to change therewith；Reference electrode is than relatively inert, and to solution hydrogen ion activity without response, PH is measured
In it the reference potential being kept fixed is provided as constant half-cell；The Inpro4260I/SG/120 electrodes of plum Teller use
The stain resistance in commercial Application is strong as reference for high polymer, supplementary electrode solution ground function (SG；To solve ground loop
Problem, the utility model is further grounded shielded layer 22 substantially eliminates PH fluctuations to realize, meets requirement.
Embodiment two
The present embodiment is similar with embodiment one, the difference is that, the output end of the present embodiment electrode signal line 2 is also connected with
There are M800 multi-parameter transmitters, Teller Inpro4260I/SG/120 digital electrodes and M800 multi-parameter transmitters are combined group
At load intelligent digital electrode, the analog signal measured is directly transformed into digital signal again by M800 multi-parameter transmitters
It is transmitted, and the parameter transmitter can be arranged as the controller in embodiment one and draw in each of reaction kettle instrument box 4
Exit, or be arranged at each outlet of reaction kettle instrument box 4 together with the controller in embodiment, and reaction kettle
Instrument box 4 is connected with controller.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although electrode tip 1 is used more herein；Electrode signal line 2；Signal transmitting layer 21；Shielded layer 22；Outside letter
Number receiving terminal 3；Reaction kettle instrument box 4；Earth point outlet 41；The terms such as reaction kettle 5, but be not precluded using other terms
Possibility.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；It is construed as
Any one of the additional limitations is all contrary to the spirit of the present invention.
Claims (7)
1. a kind of online PH combination electrodes fluctuation optimization structure, including with measuring electrode, reference electrode and electrode signal line (2)
PH combination electrodes, pH value detection is carried out to solution in reaction kettle by the PH combination electrodes, which is characterized in that the described electrode letter
Number line (2) include signal transmitting layer (21) and around be located at signal transmitting layer (21) outer circumferential and with signal transmitting layer (21) it is coaxial
One end of the shielded layer (22) of setting, the signal transmitting layer (21) is connected to measuring electrode, and the other end is connected to external letter
Number receiving terminal (3), the shielded layer (22) one end are connected to reference electrode, other end ground connection setting.
2. online PH combination electrodes fluctuation optimization structure according to claim 1, which is characterized in that the shielded layer
(22) ground terminal is connected to the earth point outlet (41) of reaction kettle instrument box (4), and the shielded layer (22) is connect by this
Place outlet (41) is grounded.
3. online PH combination electrodes fluctuation optimization structure according to claim 2, which is characterized in that the reaction kettle instrument
Each outlet on reaction kettle instrument box (4) is provided with controller, the external signal receiving terminal in electricity box (4)
(3) signal receiving end of device in order to control.
4. online PH combination electrodes fluctuation optimization structure according to claim 3, which is characterized in that the electrode signal
The output end of line (2) is connected with parameter transmitter.
5. online PH combination electrodes fluctuation optimization structure according to claim 4, which is characterized in that the parameter pick-up
Device uses M800 multi-parameter transmitters.
6. the online PH combination electrodes fluctuation optimization structure according to claim 2-5 any one, which is characterized in that described
PH combination electrodes use plum Teller Inpro4260I/SG/120 digital electrodes.
7. the online PH combination electrodes fluctuation optimization structure according to claim 2-5 any one, which is characterized in that described
Reaction kettle be grounded by its external Steel Structure and grounding body, to make solution in reaction kettle be in ground state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721476980.8U CN207832730U (en) | 2017-11-08 | 2017-11-08 | Online PH combination electrodes fluctuation optimization structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721476980.8U CN207832730U (en) | 2017-11-08 | 2017-11-08 | Online PH combination electrodes fluctuation optimization structure |
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| Publication Number | Publication Date |
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| CN207832730U true CN207832730U (en) | 2018-09-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281549A (en) * | 2021-05-28 | 2021-08-20 | 上海应用技术大学 | Modified digital multimeter and method for measuring pH and ion concentration of solution |
-
2017
- 2017-11-08 CN CN201721476980.8U patent/CN207832730U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113281549A (en) * | 2021-05-28 | 2021-08-20 | 上海应用技术大学 | Modified digital multimeter and method for measuring pH and ion concentration of solution |
| CN113281549B (en) * | 2021-05-28 | 2022-08-23 | 上海应用技术大学 | Modified digital multimeter and method for measuring pH and ion concentration of solution |
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