CN206497069U - A kind of self-cleaning pH on-line monitoring systems - Google Patents
A kind of self-cleaning pH on-line monitoring systems Download PDFInfo
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- CN206497069U CN206497069U CN201720034020.XU CN201720034020U CN206497069U CN 206497069 U CN206497069 U CN 206497069U CN 201720034020 U CN201720034020 U CN 201720034020U CN 206497069 U CN206497069 U CN 206497069U
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Abstract
The utility model discloses a kind of self-cleaning pH on-line monitoring systems, including measuring cell, fluid energizer, pH on-line computing models, pH electrodes, control module and feeding-passage；The pH electrodes are installed in measuring cell, and measuring cell one end is connected with feeding-passage, and the other end is connected with fluid energizer；The pH electrodes are connected with pH on-line computing models, and pH on-line computing models are connected with control module；The feeding-passage is connected with control module.The utility model prevents electrode fouling, reduce electrode poisoning probability, the problem of fundamentally solving pH on-line monitoring system long-term safety reliability services, can extend 3 ~ 5 times of the service life of pH electrodes under equal operating mode, be widely used in the working environment of the rather harsh such as petrochemical enterprise.
Description
Technical field
The utility model belongs to pH field of measuring technique, more particularly to a kind of self-cleaning pH on-line monitoring systems.
Background technology
PH measurements belong to galvanic interaction, and principle is that chemical energy is converted into electric energy.PH measurements are that industrial circle is used extensively
General process monitoring means, although have passed through the development in a nearly century, are presently the most conventional still liquid filled type
Glass electrode.The major part of glass electrode is that sensing glass film and inner wire are made up of interior reference solution and internal reference electrode.
The electric channel of glass electrode formation current potential relies primarily on micro- osmotic pressure of reference solution in electrode.When this electric channel is blocked, example
As electrode is located at hyperbaric environment or testing medium excessive concentration, and interior reference liquid fluid infusion is smooth, or when having a bubble,
The extravasation of interior reference liquid will be hindered, is forbidden measurement；Another situation, be testing medium reverse osmosis into interior reference liquid, make in
Reference liquid pollution even produces chemical reaction, then destroys internal reference electrode, ultimately results in measurement error increase even electrode
Failure.
Currently, it is limited to the principle and manufacturing process of pH electrodes, is used in electroplating wastewater, pharmacy more pH on-line measurement systems and gives up
Under the work condition environment relatively low with respect to contaminated electrode degree such as water, dyeing waste water, paper waste, pure water.And in the height of petroleum chemical enterprise
In the environment of warm high pressure high pollution, online pH measurements are extremely difficult, and the method that offline sampling and measuring is currently mainly used is obtained.
PH electrodes are in the operating mode of petroleum chemical enterprise, and the universal life-span only has 1 ~ 2 week or even several days.
To extend the service life of electrode, most basic method exactly improves the working environment of electrode.Present pH is online
Monitor, is all that to be mounted directly to electrode in testing medium, and when electrode, to be in high pollution, high pressure, high concentration etc. severe
When under operating mode, electrode will be quickly invalidated.If electrode time under the work of mal-condition can be made significantly to shorten, and timing is right
Electrode is cleaned, it is possible to effective guard electrode, extends electrode life.Manually cleaning can solve this problem, but
It is that under the hazardous environment of petrochemical plant HTHP, dismounting electrode with pressure has danger, and easily causes artificial damage,
In addition the missing on manpower, implements and is also extremely difficult.
The content of the invention
The purpose of this utility model is to realize that pH is real-time using auto-cleaning method there is provided one kind to solve the above problems
The self-cleaning pH on-line monitoring systems of on-line measurement.
Therefore, the technical solution of the utility model is：A kind of self-cleaning pH on-line monitoring systems, it is characterised in that：Including
Measuring cell, fluid energizer, pH on-line computing models, pH electrodes, control module and feeding-passage；The pH electrodes are installed on survey
Measure in pond, measuring cell one end is connected with feeding-passage, and the other end is connected with fluid energizer；The pH electrodes are supervised online with pH
Survey instrument to be connected, pH on-line computing models are connected with control module；The feeding-passage is connected with control module.
Further, the measuring cell and feeding-passage are respectively connected with fluid energizer, pH electrodes and measurement
Installed by static seal mode in pond.
Further, the feeding-passage is divided into water-dilution channel and medium channel, and the water-dilution channel front end is provided with clear water
Entrance, end is divided into two-way, all the way by the first pneumatic operated valve connecting fluid energizer, is connected survey by the second pneumatic operated valve all the way
Measure pond；The medium channel front end is provided with medium inlet, and end connects measuring cell by the 3rd pneumatic operated valve；Described first is pneumatic
Valve, the second pneumatic operated valve, the 3rd pneumatic operated valve pass through solenoid valve control, magnetic valve link control module.
There is measuring cell of the present utility model rinse water and testing medium to alternate the function of passing through, fluid energizer
Medium kinetic energy can be lifted, pH on-line computing models and pH electrodes have explosion prevention function, and control module has explosion prevention function, and charging is logical
Road can automatically switch the circulation of clear water and medium.
During utility model works, opening and closing of the control module to feeding-passage carry out procedure auto-control, make clear
Wash water and testing medium appear alternatively in measuring cell, in the state of testing medium presence, by pH electrodes and pH on-line computing models
The pH value of testing medium is obtained, and realizes remote transmission and the storage of measurement data.The utility model prevents electrode fouling, drop
Low electrode poisoning probability, the problem of fundamentally solving pH on-line monitoring system long-term safety reliability services can be in equal work
Extend 3 ~ 5 times of the service life of pH electrodes under condition, be widely used in the working environment of the rather harsh such as petrochemical enterprise.
Brief description of the drawings
It is described in further detail below in conjunction with accompanying drawing and embodiment of the present utility model：
Fig. 1 is structural representation of the present utility model；
Fig. 2 is system layout figure of the present utility model.
Marked in figure：Measuring cell 1, ejector 2, pH electrodes 3, pH on-line computing models 4, control module 5, feeding-passage 6,
Water-dilution channel 61, clear water entrance 611, medium channel 62, medium inlet 621, liquid outlet 63, the first magnetic valve 7, the second electromagnetism
Valve 8, the pneumatic operated valve 10 of the 3rd magnetic valve 9 first, the second pneumatic operated valve 11, the 3rd pneumatic operated valve 12.
Embodiment
Referring to accompanying drawing.The present embodiment includes measuring cell 1, fluid energizer, pH on-line computing models 4, pH electrodes 3, control
Module 5 and feeding-passage 6；The fluid energizer can increase zero of fluid dynamic energy by ejector, pump or other classes
Part is constituted, and the present embodiment selects ejector 2, and the pH electrodes 3 are installed in measuring cell 1, the one end of measuring cell 1 and feeding-passage 6
It is connected, the other end is connected with ejector 2；The pH electrodes 3 are connected with pH on-line computing models 4, pH on-line computing models 4 and control mould
Block 5 is connected；The feeding-passage 6 is connected with control module 5, and ejector also connects liquid outlet 63 by pipeline, for lining up
Medium or clear water.
Valve and pipe that the feeding-passage 6 of the present embodiment be able to can be automatically controlled by magnetic valve, pneumatic operated valve or other classes
Road is constituted.6 points of the feeding-passage is water-dilution channel 61 and medium channel 62, and the front end of water-dilution channel 61 is provided with clear water entrance
611, end is divided into two-way, connects ejector 2 by the first pneumatic operated valve 10 all the way, is connected measure by the second pneumatic operated valve 11 all the way
Pond 1；The front end of medium channel 62 is provided with medium inlet 621, and end connects measuring cell 1 by the 3rd pneumatic operated valve 12；Described
One pneumatic operated valve 10, the second pneumatic operated valve 11, the 3rd pneumatic operated valve 12 pass through the first magnetic valve 7, the second magnetic valve 8, the 3rd electromagnetism respectively
Valve 9 is controlled, and the first magnetic valve 7, the second magnetic valve 8, the 3rd magnetic valve 9 are all connected with control module 5, are controlled by control module 5
First pneumatic operated valve 10, the second pneumatic operated valve 11, the break-make of the 3rd pneumatic operated valve 12.
During utility model works, when the first pneumatic operated valve 10, the second pneumatic operated valve 11 are opened, and the 3rd pneumatic operated valve 12 is closed,
Water-dilution channel 61 is connected with measuring cell 1, is rinse water in measuring cell 1, pH value determination, does not clean now and protect pH electrodes；When
First pneumatic operated valve 10, the 3rd pneumatic operated valve 12 are opened, and when the second pneumatic operated valve 11 is closed, medium channel 62 is connected with measuring cell 1, measurement
It is medium in pond 1, now pH on-line computing models 4 start pH value determination by pH electrodes 3, after measurement is finished, close the 3rd pneumatic
Valve 12, while opening the second pneumatic operated valve 11, is rinsed to pH electrodes 3 and makes to fill in measuring cell 1 all pneumatic after rinse water
Valve is closed.The pH value that pH on-line computing models 4 are measured is transferred to on-line control module 5.On-line control module 5 is obtained after pH value,
Data server is transferred data to by way of 4 ~ 20mA or RS485.
Claims (3)
1. a kind of self-cleaning pH on-line monitoring systems, it is characterised in that：Including measuring cell, fluid energizer, pH on-line monitorings
Instrument, pH electrodes, control module and feeding-passage；The pH electrodes are installed in measuring cell, measuring cell one end and feeding-passage phase
Even, the other end is connected with fluid energizer；The pH electrodes are connected with pH on-line computing models, pH on-line computing models and control mould
Block is connected；The feeding-passage is connected with control module.
2. a kind of self-cleaning pH on-line monitoring systems as claimed in claim 1, it is characterised in that：The measuring cell and charging are logical
Road is respectively connected with fluid energizer, and pH electrodes are installed with measuring cell by static seal mode.
3. a kind of self-cleaning pH on-line monitoring systems as claimed in claim 1, it is characterised in that：The feeding-passage is divided into clearly
Aquaporin and medium channel, the water-dilution channel front end are provided with clear water entrance, and end is divided into two-way, passes through the first pneumatic operated valve all the way
Connecting fluid energizer, connects measuring cell by the second pneumatic operated valve all the way；The medium channel front end is provided with medium inlet, end
End connects measuring cell by the 3rd pneumatic operated valve；First pneumatic operated valve, the second pneumatic operated valve, the 3rd pneumatic operated valve pass through magnetic valve control
System, magnetic valve link control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720034020.XU CN206497069U (en) | 2017-01-12 | 2017-01-12 | A kind of self-cleaning pH on-line monitoring systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720034020.XU CN206497069U (en) | 2017-01-12 | 2017-01-12 | A kind of self-cleaning pH on-line monitoring systems |
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| Publication Number | Publication Date |
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| CN206497069U true CN206497069U (en) | 2017-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720034020.XU Active CN206497069U (en) | 2017-01-12 | 2017-01-12 | A kind of self-cleaning pH on-line monitoring systems |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841356A (en) * | 2017-01-12 | 2017-06-13 | 杭州原创软件有限公司 | A kind of self-cleaning pH on-line monitoring systems |
| CN109813782A (en) * | 2019-02-01 | 2019-05-28 | 杭州原创软件有限公司 | A kind of self diagnosis PH on-line monitoring system and method |
-
2017
- 2017-01-12 CN CN201720034020.XU patent/CN206497069U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841356A (en) * | 2017-01-12 | 2017-06-13 | 杭州原创软件有限公司 | A kind of self-cleaning pH on-line monitoring systems |
| CN109813782A (en) * | 2019-02-01 | 2019-05-28 | 杭州原创软件有限公司 | A kind of self diagnosis PH on-line monitoring system and method |
| CN109813782B (en) * | 2019-02-01 | 2020-12-29 | 杭州原创软件有限公司 | Self-diagnosis PH on-line monitoring system and method |
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