CN209372750U - Seawater permanganate index analysis system - Google Patents

Seawater permanganate index analysis system Download PDF

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Publication number
CN209372750U
CN209372750U CN201822109750.9U CN201822109750U CN209372750U CN 209372750 U CN209372750 U CN 209372750U CN 201822109750 U CN201822109750 U CN 201822109750U CN 209372750 U CN209372750 U CN 209372750U
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seawater
control
reaction detection
permanganate index
oxidation
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CN201822109750.9U
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黄海萍
陈超
熊毅
邹雄伟
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Lihe Technology Hunan Co Ltd
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Lihe Technology Hunan Co Ltd
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Abstract

The utility model provides a kind of seawater permanganate index analysis system, the system comprises: detection components, gauge assembly and control system, detection components include reaction detection pond, oxidation-reduction potential electrode and temperature control modules;Gauge assembly includes that gauge line, metering multiple-way valve and measure control component, oxidation-reduction potential electrode, measure control component, temperature control modules are electrically connected to the control system.Seawater permanganate index analysis system provided by the utility model, by the way that oxidation-reduction potential electrode and measure control component are connect with control system, the solution extraction of designated position and prescribed dose can be more precisely controlled, the linkage control of titration end-point is realized in conjunction with the potential value for acquiring oxidation-reduction potential electrode, not by the interference of coloration and turbidity, the dosage of titrant is more accurate, and measurement accuracy is higher;And reaction temperature can be more precisely controlled using temperature control modules, further increases measurement accuracy.

Description

Seawater permanganate index analysis system
Technical field
The utility model relates to seawater cod technical fields, refer to more particularly, to a kind of seawater permanganate Number analysis system.
Background technique
The COD of water quality generally refers to water sample and aoxidizes under given conditions, the oxidant of being consumed, in terms of oxygen Amount size.Usually there are potassium dichromate oxidation, potassium permanganate oxidation, biochemical oxidation etc..
Permanganate index is the common counter for reflecting organic and inorganic oxidizable substance pollution in water body, but be cannot function as The index of theoretical oxygen demand or total organic content, because many organic matters can only be partly oxidized under the defined conditions, Volatile organic matter is also not included within measured value.Permanganate index can reflect cleaning to a certain extent and relatively clean In water body by organic and inorganic oxidizable substance pollute degree, permanganate index often by as measure surface water body by organic One important indicator of pollutant and reducing inorganic substance pollution level, often by the required test item as Monitoring And Analysis of The Quality it One.
Accuracy of Permanganate Index Determination is based primarily upon " measurement of GB/T11892-1989 water quality permanganate index " at present, than Such as: carrier fluid fluxus formae injection principle seawater permanganate index analyzer is mixed into potassium permanganate and sodium hydroxide, it is former It is inconsistent with seawater craft standard in reason, it only can be used for the alkaline process permanganate index that fresh water chloride ion is greater than 300mg/L.This Outside, it is slightly higher actually can only also to analyze chloride ion for the dual-purpose potassium permanganate automatic analyzer of the fresh water based on photometric titration, seawater Fresh water class waste water.
Moreover, above-mentioned two referred to kind permanganate indices analytical equipment, due to accurately quantitatively control solution with And titration end-point feedback control, cause sampling precision to be difficult to control, and titration end-point is interfered by coloration and turbidity, thus can shadow Ring the measurement accuracy of permanganate index in final seawater.
Utility model content
(1) technical problems to be solved
The purpose of the utility model is to provide a kind of seawater permanganate index analysis systems, high to solve existing seawater Manganate index analysis system can not be in precise measurement seawater the problem of permanganate index.
(2) technical solution
In order to solve the above-mentioned technical problem, a kind of seawater permanganate index analysis system is provided according to the utility model, It include: detection components, gauge assembly and control system;
The detection components include reaction detection pond, oxidation-reduction potential electrode and temperature control modules, the oxidation Reduction potential electrode is inserted into the reaction detection pond;
The gauge assembly includes gauge line, metering multiple-way valve and measure control component, the measure control component, meter Buret and metering multiple-way valve are sequentially communicated, and the metering multiple-way valve is connected to the reaction detection pond by pipeline, the meter Amount multiple-way valve includes leakage fluid dram and multiple interfaces for being used to connect different solutions;
The oxidation-reduction potential electrode, measure control component, temperature control modules are electrically connected with the control system, institute Control system is stated for controlling the solution that the gauge assembly quantifies pump drainage specified interface, and by acquiring the redox electricity Titrant is quantitatively added dropwise with gauge assembly described in linkage control in the potential value of position electrode.
Preferably, the measure control component includes: that plunger pump, driving motor, air switching valve and multiple groups are infrared right It manages, infrared tube described in multiple groups is set gradually along the tube wall of the gauge line, the plunger pump, air switching valve and gauge line It is sequentially connected, the infrared tube, air switching valve and driving motor are electrically connected with the control system.
Preferably, the temperature control modules include: temperature controller, heating element and temperature sensor, it is described plus Thermal element and temperature sensor are electrically connected with the temperature controller, and the temperature controller is electrically connected with the control system It connects, the heating element is wrapped in the outer wall in the reaction detection pond, and the temperature sensor is built in the reaction detection pond In.
Preferably, the reaction detection pond is built-in with magnetic stir bar, is installed with magnetic force below the reaction detection pond and stirs Motor is mixed, the magnetic agitation motor is electrically connected with the control system.
Preferably, the top in the reaction detection pond is connected with condensing reflux pipe, is equipped with outside the condensing reflux pipe Cooling fan, the cooling fan are electrically connected with the control system.
It preferably, further include reagent refrigerating device, the solution is placed in the reagent refrigerating device.
(3) beneficial effect
Seawater permanganate index analysis system provided by the embodiment of the utility model, by by oxidation-reduction potential electrode The measure control component for connecting, and using with measure control component with control system is accurate control designated position and specified agent The solution extraction of amount realizes the linkage control of titration end-point in conjunction with the potential value for acquiring oxidation-reduction potential electrode, not by color The interference of degree and turbidity, the dosage of titrant is more accurate, and measurement accuracy is higher;And it can be more using temperature control modules Reaction temperature is accurately controlled, measurement accuracy is further increased;Seawater permanganate index provided by the embodiment of the utility model Accurate analysis measurement can be carried out as reducing agent to the permanganate index in seawater using potassium iodide in analysis method, and And the dosage of used seawater sample to be measured is less compared to existing test method, saves materials cost.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the annexation figure of each component in the seawater permanganate index analysis system of the utility model embodiment;
In figure: 1- control system;2- human-computer interaction interface;3- external communication system;4- power distribution system;5- detection group Part;51- reaction detection pond;52- oxidation-reduction potential electrode;53- millivolts of potential detecting circuits;54- temperature control modules;55- Crossover connection;56- condensing reflux pipe;57- cooling fan;58- magnetic agitation motor;59- magnetic stir bar;541- temperature sensing Device;542- heating element;543- temperature controller;6- gauge assembly;61- measures multiple-way valve;62- gauge line;The switching of 63- air Valve;64- plunger pump;65- driving motor;66- motor-drive circuit;67- infrared tube;7- reagent refrigerating device.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection;It can be mechanical connection, be also possible to be electrically connected;Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.
With reference to Fig. 1, the utility model embodiment provides a kind of seawater permanganate index analysis system, and the system is specific It include: detection components 5, gauge assembly 6 and control system 1;
Detection components 5 include: reaction detection pond 51, oxidation-reduction potential electrode 52 and temperature control modules 54, oxidation In 52 intercalation reaction detection cell 51 of reduction potential electrode, oxidation-reduction potential electrode 52 is furnished with special millivolt potential detecting circuit 53, oxidation-reduction potential electrode 52 is electrically connected by millivolt potential detecting circuit 53 with control system 1, temperature control modules 54 It is electrically connected with control system 1, for detecting and controlling the temperature in the reaction detection pond 51 in the analysis process.Redox electricity The property for the solution in reaction detection pond 51 that the current potential of position electrode 52 is immersed with front end is different and changes in due course, millivolt current potential Detection circuit 53 can the signal to oxidation-reduction potential electrode 52 acquired in due course and be transferred to control system 1.
Gauge assembly 6 includes: gauge line 62, metering multiple-way valve 61 and measure control component, and gauge line 62 is that inertia is saturating Bright material pipe, measure control component, gauge line 62 and metering multiple-way valve 61 are sequentially communicated.Measure multiple-way valve 61 and reaction detection The bottom end in pond 51 is connected to by pipeline, and it includes leakage fluid dram C and multiple for connecting connecing for different solutions for measuring on multiple-way valve 61 Mouthful, measure control component is used for the solution of the instruction accurate pump drainage distinct interface according to control system 1.Specifically, the present embodiment The interface of middle different solutions specifically includes: interface S or B are seawater sample to be measured, and interface E is oxidant, and interface D is titrant, Interface F is regulator, and interface G is reducing agent.
Control system 1 is the core of system, using ARM mainboard embedded computer, under linux operating system, if It counts and loads special operation control software;It realizes to the control of gauge assembly 6 and its component and detection components 5 and its component Control, can be realized by different form of computers.Control system 1 quantifies pump drainage specific bit for controlling gauge assembly 6 The solution set controls temperature, the stirring, cooling of detection components 5, and passes through the current potential of linkage acquisition oxidation-reduction potential electrode 52 Titrant is quantitatively added dropwise in value and gauge assembly 6, realizes endpoint and titrant metering.
Seawater permanganate index analysis system provided by the above embodiment, by by oxidation-reduction potential electrode and metering Control assembly is connect with control system, to realize the connection of titration end-point by the potential value for acquiring oxidation-reduction potential electrode Dynamic control, not by the interference of coloration and turbidity, the dosage of titrant is more accurate, and measurement accuracy is higher.
On the basis of the above embodiments, the seawater permanganate index analysis system further include: human-computer interaction interface 2, external communication system 3 and power distribution system 4, human-computer interaction interface 2, external communication system 3 and power distribution system 4 It is connected with control system 1, human-computer interaction interface 2 conveniently tests control system 1, inquires, setting using color line screen is touched The operation such as set, safeguard.External communication system 3 provides TCP/IP network interface and the RS485 communication of standard, to realize data, information Upload and receive the teleinstruction of downlink, aspect carries out networking to system.Power distribution system 4 passes through design or type selecting Switching Power Supply after accessing 220V alternating current, is converted into power supply needed for the systems such as the direct current 5V, 12V, 24V that need constitute each component. Control system 1 provides the operation response of human-computer interaction interface 2, the response of external communication system 3.
On the basis of the above embodiments, the metering of different solutions is reliable and accurate using feeding back with infrared tube Measure control component, measure control component specifically include: plunger pump 64, driving motor 65, air switching valve 63 and multiple groups are red Outside to pipe 67, multiple groups infrared tube 67 is set gradually along the tube wall of gauge line 62, and the position where every group of infrared tube 67 is used In measuring certain volume, infrared tube can be configured in advance, and the infrared tube 67 in the present embodiment is three groups, until it is lower and on The dosage respectively indicated are as follows: 0.5ml, 1ml and 5ml.
Wherein, the top of plunger pump 64, air switching valve 63 and gauge line 62 is sequentially connected, and air switching valve 63 is cut Change the extraction and discharge that can be realized solution.Infrared tube, air switching valve 63 are electrically connected with control system 1, driving motor 65 It is electrically connected by motor-drive circuit 66 with control system 1, motor-drive circuit 66 is used to receive the signal of control system 1 and makes Driving motor 65 works.When control system 1 issues the solution for extracting certain volume, corresponding solenoid valve is measured in multiple-way valve 61 just It opens, the negative pressure plunger pump 64 of gauge assembly is just driven the driving of motor 65, and driving motor 65 uses stepper motor, starts to extract The solution of corresponding position, solution sequentially enter metering multiple-way valve 61.In gauge line, usual gauge line 62 is transparent glass tube, is led to It crosses infrared tube and determines corresponding level value, after solution reaches target level, corresponding electromagnetism Vavle switching, plunger pump, which is mended, to be evacuated Gas, after solution is brought into reaction detection pond 51 by air.
On the basis of the various embodiments described above, temperature control modules 54 include: temperature controller 543 and heating element 542 And temperature sensor 541, heating element 542 and temperature sensor 541 are electrically connected with temperature controller 543, temperature control Device 543 is electrically connected with control system 1, and heating element 542 is nickel chromium triangle class heating wire, can be wrapped in the outer wall in reaction detection pond 51, Temperature sensor 541 is built at the indent osculum of 51 bottom of reaction detection pond, and platinum resistance specifically can be used in temperature sensor 541 As temperature-sensing element, is encapsulated and fixed by heat-conducting glue.
On the basis of the various embodiments described above, reaction detection pond is built-in with magnetic stir bar 59,51 lower section of reaction detection pond It is installed with magnetic agitation motor 58, magnetic agitation motor 58 is electrically connected with control system 1, when needing to stir in program setting, Signal control magnetic agitation motor 58 is issued by control system 1 to work, so that the contactless rotation of magnetic agitation rotor 59 is driven, For mixing the solution in reaction detection pond 51.
On the basis of the various embodiments described above, the upper side in reaction detection pond 51 is connected with by transfer tube 55 to be condensed back to Flow tube 56, transfer tube 55 are made of insulating rubber material, inertia is good, it is elastic it is big, intensity is big.The external installation of condensing reflux pipe 56 There is cooling fan 57, cooling fan 57 is electrically connected with control system 1, and cooling fan 57 can as needed dry to condensing reflux pipe, Realize that gaseous material condensation is back to reaction detection pond 51, guarantee effect substance does not leak.
On the basis of the various embodiments described above, seawater permanganate index analysis system further includes reagent refrigerating device 7, examination Agent cold storage plant 7 has certain vessel space, and the various solution for the analysis of seawater permanganate index are placed in reagent In cold storage plant 7, it is possible to provide one is protected from light relatively, and low temperature of the temperature control at 1 DEG C~5 DEG C, is placed on the molten of inside to realize Liquid extends the shelf life, and reduces the replacement frequency, reduces maintenance when online use.
Seawater permanganate index analysis system provided by the above embodiment, by by oxidation-reduction potential electrode and metering Control assembly is connect with control system, and the measure control component used adds column to feed back using the confirmation of infrared tube volume Pumping system is filled in, the solution extraction of designated position and prescribed dose can be more precisely controlled, in conjunction with acquisition oxidation-reduction potential The potential value of electrode realizes the linkage control of titration end-point, and not by the interference of coloration and turbidity, the dosage of titrant is more quasi- Really, measurement accuracy is higher;And reaction temperature can be more precisely controlled using temperature control modules, further increases measurement Precision.
In addition, the utility model embodiment also provides a kind of seawater permanganate index analysis using in above-described embodiment The method that system carries out the analysis of seawater permanganate index, the solution in above-described embodiment specifically include: seawater sample to be measured, people Work seawater standard sample, oxidant, regulator, reducing agent and titrant, wherein oxidant is potassium permanganate and sodium hydroxide Aqueous solution, regulator are dilute sulfuric acid, and reducing agent is the aqueous solution of potassium iodide, and titrant is the aqueous solution of sodium thiosulfate, manually Seawater standard sample is the aqueous solution of sodium chloride, magnesium sulfate, glucose.
Seawater permanganate index analysis system in seawater divides permanganate index in seawater in above-described embodiment Whole program process of analysis are as follows:
After system boot, control system 1 starts standby program, system setting is read, by manually/fixed point/period/controlled several Kind mode obtains test instruction;Human-computer interaction interface 2 receives instruction (test/calibration/cleaning/initialization), is transmitted to control system Whether system 1, the display of control system 1 initialize, and such as "Yes" are selected to enter initialization, select "No" that will not initialize, do not select then Automatically into initialization after 5s.
Control system 1 is according to the command calls testing process of human-computer interaction interface 2, due to having had guarantor in reaction detection pond 51 The residual liquid of oxidation-reduction potential electrode is protected, the motor-drive circuit 66 of metering system 6 is instructed, drives stepper motor 65, band Residual liquid in reaction detection pond 51 is evacuated in gauge line via metering multiple-way valve 61, measures multi-pass afterwards by dynamic plunger pump 64 The electromagnetism Vavle switching of valve 61, residual liquid are discharged from leakage fluid dram C.
Gauge assembly 6 is managed via S or B pipe (being according to circumstances arranged), extracts 5ml seawater sample to be measured and carries out to gauge line 62 Rinse sample is discharged from leakage fluid dram C for rinse several times.5ml seawater sample to be measured is extracted again twice, is added in reaction detection pond 51, Temperature control modules 54 start temperature control, by reading the measurement temperature of temperature sensor 541 in reaction detection pond 51, and control outer Around the electric current of heating element 542, temperature is raised to 60 DEG C, then 20ml seawater sample to be measured is added in the same way to reaction detection In pond 51, via in interface E addition 5ml oxidant to 51, magnetic agitation motor 58 rotates gauge assembly 6, drives magnetic agitation 59 rotation of son is stirred, and is stopped after 10s.
The temperature in reaction detection pond 51 is raised to 97 DEG C, after rising to target temperature by temperature control modules 54, keeps 10min. Gauge assembly 6 is added 1ml via interface F and adjusts liquid in 51, via interface G, 1ml reducing solution is added in 51, magnetic agitation Motor 58 rotates, and drives the rotation stirring of 51 bottom stirrers 59.
Gauge assembly 6 via interface D extract 5ml titrant, via leakage fluid dram C empty carry out rinse, after extract 5ml drop again Determine agent, gradually to being added in reaction detection pond 51, millivolt potential detecting circuit 53 reads oxidation-reduction potential electrode 52 in real time Potential value is simultaneously transferred to control system 1, and cooperates with the titration of gauge assembly 6, until titration end-point, record titrant consumption step Number calculates permanganate index value by step number, or generates the titration step number of current standard specimen when calibration (when calibration curve).
Gauge assembly 6 first empties the reaction solution in reaction detection pond 51, then calls cleaning process, by reaction detection pond 51 It cleans up, and injects the seawater sample to be measured of certain volume into reaction detection pond again for protecting oxidation-reduction potential electric Pole, into standby mode.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (6)

1. a kind of seawater permanganate index analysis system characterized by comprising detection components, gauge assembly and control system System;
The detection components include reaction detection pond, oxidation-reduction potential electrode and temperature control modules, the redox Potential electrode is inserted into the reaction detection pond;
The gauge assembly includes gauge line, metering multiple-way valve and measure control component, the measure control component, gauge line And metering multiple-way valve is sequentially communicated, the metering multiple-way valve is connected to the reaction detection pond by pipeline, and the metering is more Port valve includes leakage fluid dram and multiple interfaces for being used to connect different solutions;
The oxidation-reduction potential electrode, measure control component, temperature control modules are electrically connected with the control system, the meter Measure the solution that component is used for quantitative pump drainage specified interface.
2. seawater permanganate index analysis system according to claim 1, which is characterized in that the measure control component It include: plunger pump, driving motor, air switching valve and multiple groups infrared tube, infrared tube described in multiple groups is along the gauge line Tube wall set gradually, the plunger pump, air switching valve and gauge line are sequentially connected, the infrared tube, air switching Valve and driving motor are electrically connected with the control system.
3. seawater permanganate index analysis system according to claim 2, which is characterized in that the temperature control modules Include: temperature controller, heating element and temperature sensor, the heating element and temperature sensor with the temperature control Device electrical connection processed, the temperature controller are electrically connected with the control system, and the heating element is wrapped in the reaction detection The outer wall in pond, the temperature sensor are built in the reaction detection pond.
4. seawater permanganate index analysis system according to any one of claims 1 to 3, which is characterized in that the inspection Survey component further include: magnetic stir bar and the magnetic agitation motor of the driving magnetic stir bar rotation, the magnetic agitation Son is placed in the reaction detection pond, and the magnetic agitation motor is located at the lower section in the reaction detection pond, the magnetic agitation Motor is electrically connected with the control system.
5. seawater permanganate index analysis system according to claim 4, which is characterized in that the reaction detection pond Top is connected with condensing reflux pipe, and cooling fan, the cooling fan and the control are equipped with outside the condensing reflux pipe System electrical connection.
6. seawater permanganate index analysis system according to claim 1 or 2, which is characterized in that further include that reagent is cold Device is hidden, the solution is placed in the reagent refrigerating device.
CN201822109750.9U 2018-12-14 2018-12-14 Seawater permanganate index analysis system Active CN209372750U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109444244A (en) * 2018-12-14 2019-03-08 力合科技(湖南)股份有限公司 Seawater permanganate index analysis system and method
CN111024888A (en) * 2019-12-27 2020-04-17 杭州绿洁环境科技股份有限公司 Method for testing permanganate index

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109444244A (en) * 2018-12-14 2019-03-08 力合科技(湖南)股份有限公司 Seawater permanganate index analysis system and method
CN111024888A (en) * 2019-12-27 2020-04-17 杭州绿洁环境科技股份有限公司 Method for testing permanganate index

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