CN103575789A - Water hardness detection mechanism - Google Patents
Water hardness detection mechanism Download PDFInfo
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- CN103575789A CN103575789A CN201210278331.2A CN201210278331A CN103575789A CN 103575789 A CN103575789 A CN 103575789A CN 201210278331 A CN201210278331 A CN 201210278331A CN 103575789 A CN103575789 A CN 103575789A
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Abstract
The invention discloses a water hardness detection mechanism which is characterized by at least comprising a shell (1), wherein one side of the shell (1) is provided with a detection water inlet (6), and the other side is provided with a detection water outlet (4); a detected liquid tank (5) is arranged between the detection water inlet (6) and the detection water outlet (4); and one ends of a calomel electrode (3) and a calcium electrode (2) respectively extend into the detected liquid tank (5), and the other ends are electrically connected with a processing circuit (7). The mechanism can implement automatic and continuous detection on the hardness of boiler feed water and overproof warning, is simple to operate, and has the characteristics of high working stability and reliability and the like.
Description
Technical field
The invention belongs to a kind of detection pick-up unit, particularly a kind of water hardness testing agency.
Background technology
In nature water, contain a large amount of calcium ions and magnesium ions, boiler is directly used with the former water of calcium ions and magnesium ions, will make gyp, has a strong impact on boiler safety, economical operation, and therefore, Industrial Boiler water must be processed through softening.According to the relevant regulations of national labour protection department; the hardness of boiler feed water must not be higher than corresponding hardness number, and traditional employing chemical method detects the water hardness of water inlet, and its shortcoming is to chemically examine by timing sampling; can not be real-time; continuous detecting, can not show in time to the unexpected variation of water quality, and; this method detection speed is slow; chemical reagent consumption expense is high, thereby, be difficult to guarantee for a long time that boiler feed water hardness reaches the hardness number of national labour protection department regulation.
Summary of the invention
The object of this invention is to provide a kind of can detection boiler feed water hardness Automatic continuous, the warning that exceeds standard, and simple to operate, the reliable water hardness of working stability testing agency.
The object of the present invention is achieved like this, water hardness testing agency, it is characterized in that: at least comprise housing, housing one side has detection water inlet, opposite side has detection water out, detect water inlet and detect water out that this has detected liquid cell, mercurous chloride electrode and calcium electrode stretch in detected liquid cell one end respectively, and the other end is electrically connected to treatment circuit.
Described treatment circuit comprises two-way emitter follower, two-way emitter follower consists of two amplifiers, two-way measuring amplifier, two-way measuring amplifier is comprised of three amplifiers, mercurous chloride electrode and calcium electrode are electrically connected to respectively the input end of two-way emitter follower, the output terminal of two-way emitter follower is electrically connected to the input of comparer, and comparer output is electrically connected to warning circuit.
Described treatment circuit comprises two-way emitter follower, two-way emitter follower consists of two amplifiers, two-way measuring amplifier, two-way measuring amplifier is comprised of three amplifiers, mercurous chloride electrode and calcium electrode are electrically connected to respectively the input end of two-way emitter follower, the output terminal of two-way emitter follower is electrically connected to two-way measuring amplifier, and two-way measuring amplifier is electrically connected to the input port of single-chip microcomputer with A/D conversion, and single-chip microcomputer one I/O is electrically connected to warning circuit.
Described treatment circuit is electrically connected with LCD display and keyboard circuit.
Advantage of the present invention is: owing to adopting electrochemical method, can detect boiler feed water hardness Automatic continuous, warning exceeds standard, working stability simple to operate is reliable, thereby improved accuracy of detection, reduced boiler operatiopn expense, alleviated personnel labor intensity, guaranteed that boiler feed water hardness can not surpass the hardness number of regulation.
Accompanying drawing explanation
Below in conjunction with embodiment accompanying drawing, the invention will be further described:
Fig. 1 is embodiment of the present invention structural representation;
Fig. 2 is embodiment 1 circuit theory diagrams;
Fig. 3 is embodiment 2 circuit theory diagrams.
In figure, 1, housing; 2, calcium electrode; 3, mercurous chloride electrode; 4, detect water out; 5, detected liquid cell; 6, detect water inlet; 7, treatment circuit; 8, keyboard circuit; 9, warning circuit; 10, LCD display.
Embodiment
As shown in Figure 1, at least comprise housing 1, housing 1 one sides have the water inlet 6 of detection, opposite side has the water out 4 of detection, detect water inlet 6 and detect water out 4 that this has detected liquid cell 5, mercurous chloride electrode 3 and calcium electrode 2 respectively one end stretch in detected liquid cell 5, and the other end is electrically connected to treatment circuit 7.
As shown in Figure 2, treatment circuit 7 comprises two-way emitter follower IC1 and IC2, two-way emitter follower consists of two amplifiers, two-way measuring amplifier IC3 and IC4, two-way measuring amplifier is comprised of three amplifiers, mercurous chloride electrode 3 and calcium electrode 2 are electrically connected to respectively the input end of two-way emitter follower IC1 and IC2, and the output terminal of two-way emitter follower IC1 and IC2 is electrically connected to the input of comparer IC5, and comparer output is electrically connected to warning circuit 9.
As shown in Figure 1, at least comprise housing 1, housing 1 one sides have the water inlet 6 of detection, opposite side has the water out 4 of detection, detect water inlet 6 and detect water out 4 that this has detected liquid cell 5, mercurous chloride electrode 3 and calcium electrode 2 respectively one end stretch in detected liquid cell 5, and the other end is electrically connected to treatment circuit 7.
As shown in Figure 3, treatment circuit 7 comprises two-way emitter follower IC1 and IC2, two-way emitter follower consists of two amplifiers, two-way measuring amplifier IC3 and IC4, two-way measuring amplifier is comprised of three amplifiers, mercurous chloride electrode 3 and calcium electrode 2 are electrically connected to respectively the input end of two-way emitter follower IC1 and IC2, and the output terminal of two-way emitter follower IC1 and IC2 is electrically connected to the single-chip microcomputer input port with A/D conversion, and single-chip microcomputer one I/O is electrically connected to warning circuit 9.Treatment circuit 7 is electrically connected with LCD display 10 and keyboard circuit 8, by LCD display and keyboard circuit input water hardness warning upper lower limit value, by LCD display, shows flow, temperature, water hardness value.
Single-chip microcomputer with A/D conversion is mas430.
Principle of the present invention is: the ability of water hardness refer initially to calcium, magnesium ion precipitation soap.The total hardness of water refers to the total concentration of calcium in water, magnesium ion, comprising carbonate hardness (calcium precipitating with carbonate form by heating energy, magnesium ion, therefore be again temporary hardness) and non-carbonate hardness (part calcium, the magnesium ion that can not precipitate after heating, claim again Permanent hardness).Generally calcium ion is maximum to the contribution of total hardness, and for relatively-stationary a certain area, the shared ratio of calcium ions and magnesium ions is again relatively stable, so, detect calcium ion concentration, just indirectly shown the total hardness of local water quality.
Calcium electrode is as detecting electrode, and mercurous chloride electrode is as contrast electrode, and calcium electrode, mercurous chloride electrode form primary element with detected boiler feed water.
The electromotive force of primary element is relevant to the calcium ion concentration in tested water, the small electric kinetic potential of primary element is amplified, then compare with inner reference voltage Ef, if illustrating into water hardness, the small electric kinetic potential Ex> reference voltage Ef of primary element exceeds standard, instrument is reported to the police, otherwise does not report to the police.Before the use first of calcium electrode, according to the request for utilization of electrode, need to add in 0.1 mole of lime chloride and fill solution (instrument is with), then invade bubble and in water to be detected, activate 24 hours.Calcium electrode belongs to exact instrument, and the PVC film of electrode front end has ion and selects permeation, can not use hard object contact, in order to avoid damage.The high impedance plug of calcium electrode lead-in wire, answers the socket bottom at the inserting instrument back side, and then tightening fixed screw can use.
Mercurous chloride electrode needs to add saturated Klorvess Liquid in mercurous chloride electrode after using continuously a period of time, and need to maintain the potassium chloride of separating out on a small quantity, and calcium electrode is used the time about 2 months continuously, also will add 0.1 mole of calcium chloride solution.Note, in mercurous chloride electrode, can not have bubble, in order to avoid " salt bridge " opens circuit.
The parts that the present embodiment does not describe in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (4)
1. water hardness testing agency, it is characterized in that: at least comprise housing (1), housing (1) one side has detection water inlet (6), opposite side has detection water out (4), this has detected liquid cell (5) to detect water inlet (6) and detection water out (4), a mercurous chloride electrode (3) and calcium electrode (2) respectively one end stretch in detected liquid cell (5), and the other end is electrically connected to treatment circuit (7).
2. water hardness according to claim 1 testing agency, it is characterized in that: described treatment circuit (7) comprises two-way emitter follower, two-way emitter follower consists of two amplifiers, two-way measuring amplifier, two-way measuring amplifier is comprised of three amplifiers, mercurous chloride electrode (3) and calcium electrode (2) are electrically connected to respectively the input end of two-way emitter follower, and the output terminal of two-way emitter follower is electrically connected to the input of comparer, and comparer output is electrically connected to warning circuit (9).
3. water hardness according to claim 1 testing agency, it is characterized in that: described treatment circuit (7) comprises two-way emitter follower, two-way emitter follower consists of two amplifiers, two-way measuring amplifier, two-way measuring amplifier is comprised of three amplifiers, mercurous chloride electrode (3) and calcium electrode (2) are electrically connected to respectively the input end of two-way emitter follower, the output terminal of two-way emitter follower is electrically connected to two-way measuring amplifier, two-way measuring amplifier is electrically connected to the input port of single-chip microcomputer with A/D conversion, and single-chip microcomputer one I/O is electrically connected to warning circuit (9).
4. water hardness according to claim 1 testing agency, is characterized in that: described treatment circuit (7) is electrically connected with LCD display (10) and keyboard circuit (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278331.2A CN103575789A (en) | 2012-08-07 | 2012-08-07 | Water hardness detection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210278331.2A CN103575789A (en) | 2012-08-07 | 2012-08-07 | Water hardness detection mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN103575789A true CN103575789A (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210278331.2A Pending CN103575789A (en) | 2012-08-07 | 2012-08-07 | Water hardness detection mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101722A (en) * | 2014-07-15 | 2014-10-15 | 广州特种承压设备检测研究院 | Multi-object continuous automatic analysis device and method for industrial boiler water quality detection |
-
2012
- 2012-08-07 CN CN201210278331.2A patent/CN103575789A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101722A (en) * | 2014-07-15 | 2014-10-15 | 广州特种承压设备检测研究院 | Multi-object continuous automatic analysis device and method for industrial boiler water quality detection |
| CN104101722B (en) * | 2014-07-15 | 2015-09-30 | 广州特种承压设备检测研究院 | Entry automatic continuous analysis device and analytical approach thereof in Industrial Boiler water quality detection |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140212 |