CN209182720U - A kind of experimental water dissolved oxygen content accuracy-control system - Google Patents
A kind of experimental water dissolved oxygen content accuracy-control system Download PDFInfo
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- CN209182720U CN209182720U CN201920123158.6U CN201920123158U CN209182720U CN 209182720 U CN209182720 U CN 209182720U CN 201920123158 U CN201920123158 U CN 201920123158U CN 209182720 U CN209182720 U CN 209182720U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model discloses a kind of experimental water dissolved oxygen content accuracy-control systems, belong to metallic material corrosion experimental study technical field, the experimental water dissolved oxygen content accuracy-control system by low-oxygen gas oxygenation component, dissolved oxygen sensing circulation loop, dissolved oxygen control system, constitute to water assembly, deaeration in condenser component and inert gas deoxygenation component.Be compared with the prior art, the utility model is able to achieve experimental water dissolved oxygen content in the accurate control of μ g/L rank, and dissolved oxygen content can control within setting range for a long time, simultaneity factor can automatic running, without guard, save human and material resources.
Description
Technical field
The utility model belongs to metallic material corrosion experimental study technical field, and in particular to a kind of experimental water dissolved oxygen
Content accuracy-control system.
Background technique
In field of thermal power, as people are to energy saving and protection environment pay attention to day by day, unit parameter is continuous
It improves, the steam side oxygen of the steam flow component such as superheater, reheater, high temperature steam pipeline, turbine rotor, blade, nozzle
Change problem is also more and more prominent.In order to reduce the flowing accelerated corrosion of boiler water sidepiece part, high parameter boiler generally uses water supply
Oxygenated treatment, but facts have proved that boiler concentrates stripping using often occurring heating surface tube inner wall oxide skin after feedwater oxygen treatment
It falls, brings very big puzzlement to power plant, therefore in laboratory simulation oxygenated treatment operating condition, study oxygenated treatment and aoxidize to material vapor
With the influence of scale spallation is with important application prospects and realistic meaning.It is general that boiler of power plant oxygenated treatment controls oxygen content
For 20~150 μ g/L magnitudes, power plant's scene oxygenation engineering water flow about goes up kiloton per hour, direct using oxygen or air bottle
Oxygenation, dissolved oxygen content relatively easily control, but in the steam oxidation test circuit of laboratory, water flow is relatively small how
Its dissolved oxygen content is accurately controlled as a problem urgently to be resolved, dissolved oxygen content is not allowed once controlling, test result
Reliability will remain to be discussed.
Lot of domestic and international research unit all develops steam or supercritical water oxidation experimental rig, such as patent: patent CN
10162661 B " metal material high temperature water vapor oxidation experiment device ", a kind of 103543096 A of CN " dynamic high temperature hyperbaric oxygen
Change experimental provision "；The steam oxidation device in the U.S. laboratory NETL, the overcritical water oxygen of Wisconsin-Madison university, the U.S.
Makeup is set, the supercritical water oxidation of the experimental bench of Nippon Steel company, Japan and Zhejiang Polytechnical University's wastewater treatment is tested
Device, the major defect of these equipment are the dissolved oxygen content being unable to control in water." one kind is super to face 102519863 A of patent CN
Boundary's steam oxidation experimental rig " dissolved oxygen content in water controlled by the flow of setting argon gas and oxygen, but 100L
Water dissolved oxygen content, which increases to 10 μ g/L from 0 μ g/L, only needs 0.0007 milliliter of standard conditions oxygen, when requiring content of oxygen dissolved in water
Oxygen is directlyed adopt in μ g/L magnitude and adjusts the dissolved oxygen content being unable to accurately control in water, will lead to content of oxygen dissolved in water
Cross great fluctuation process.Patent application document 201810541904.3 " Dissolved Oxygen concentration Control system, method and apparatus " discloses one
Kind sewage treatment control platform Dissolved Oxygen concentration Control system, method and apparatus cannot the purpose is to solve the problems, such as excess aeration
Realize accurate adjusting of the content of oxygen dissolved in water in 20~150 μ g/L magnitude.Patent application document 201710933061.7 " one
The control method of kind Dissolved Oxygen in Water content " dissolved oxygen content control method in the water body of aquaculture is provided, control
Dissolved oxygen content is mg/L magnitude.
Utility model content
The purpose of this utility model is to overcome existing steam oxidation corrosion equipment water treatment system oxygen contents cannot essence
Really the drawbacks of control, a kind of experimental water dissolved oxygen content accuracy-control system is provided.
In order to achieve the above objectives, what the utility model adopts the following technical solution to realize:
A kind of experimental water dissolved oxygen content accuracy-control system, including low-oxygen gas oxygenation component, dissolved oxygen sensing follow
Loop back path, gives water assembly, deaeration in condenser component and inert gas deoxygenation component at dissolved oxygen control system；Wherein,
Low-oxygen gas oxygenation component includes proportion magnetic valve A, filter A, check valve A, valve A, pressure gauge A, low oxygen
Body storage tank, gas mass flow meter A, inert gas bottle A, gas mass flow meter B and oxygen or air bottle；
It include water butt and high-purity water dispenser to water assembly；
Deaeration in condenser component includes and passes through the sequentially connected pressure gauge B of pipeline, valve C and vacuum pump at the top of water butt；
Inert gas deoxygenation component includes by the sequentially connected proportion magnetic valve B of pipeline, filter B, check valve C and lazy
Property gas bottle B；
Dissolved oxygen sensing circulation loop includes circulating pump and flow cell and dissolved oxygen meter；
Dissolved oxygen control system includes computer；
Low-oxygen gas air accumulator entrance is connect by gas mass flow meter A with inert gas bottle A, and gas mass flow is passed through
Meter B is connect with oxygen or air bottle, low-oxygen gas reservoir outlet by pipeline and be arranged on the pipeline valve A,
Check valve A, filter A and proportion magnetic valve are connected with the low-oxygen gas entrance of water butt bottom；
High-purity water dispenser is connected by valve B with water butt；
Flow cell is connected with dissolved oxygen meter, and pass through pipeline and the circulating pump that is arranged on the pipeline formed with water butt it is molten
Solve oxygenation measurement circulation loop；
In use, dissolved oxygen meter issues two-way telecommunications by calculating for transmitting measurement result to computer, computer
The unlatching amplitude of proportion magnetic valve A and proportion magnetic valve B is controlled number respectively.
The utility model, which further improves, to be, flow cell is provided with dissolved oxygen sensor, the letter of dissolved oxygen sensor
Number 4~20mA current signal is integrated by dissolved oxygen meter, which is transmitted to the computer, and computer is according to actual measurement
Dissolved oxygen value and the dissolved oxygen upper and lower limits of setting calculate control signal, are output to proportion magnetic valve A and proportion magnetic valve B
On, its switch ratio is controlled, and then control low-oxygen gas and inert gas and intake.
The utility model, which further improves, to be, is dissolved by being passed through low oxygen content gas into deaerated water and realizing in water
Oxygen content accurately controls, and the oxygen content in low-oxygen gas storage tank is controlled by gas mass flow meter A and gaseous mass flowmeter B
The inert gas for entering low-oxygen gas storage tank and oxygen or AIR Proportional are made, and then obtains the gas of required oxygen content.
The utility model, which further improves, to be, further includes counterbalance valve and check valve B, at the top of water butt by pipeline according to
Secondary connection counterbalance valve and check valve B are connected with atmosphere.
The utility model, which further improves, to be, the bottom of water butt is provided with sewage draining exit.
The utility model, which further improves, to be, the side of water butt is provided with water-level gauge.
Compared with prior art, high purity water, deaeration in condenser component are provided for control system to water assembly in the utility model
A large amount of dissolved oxygens in water removal, inert gas deoxygenation component, low-oxygen gas oxygenation are efficiently removed with the cooperation of inert gas deoxygenation component
Component and the cooperation of dissolved oxygen control system, the accurate dissolved oxygen content controlled in water.Specifically, the utility model control system
Beneficial effect be:
1, the utility model control system is by dissolved oxygen content in dissolved oxygen control system control loop, can for a long time by
Dissolved oxygen content is accurately controlled within set interval.
2, the utility model deoxygenation in such a way that deaeration in condenser component and inert gas deoxygenation component combine, improves
Oxygen removal efficiency, while the usage amount of inert gas, save the cost can be greatly reduced.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of experimental water dissolved oxygen content accuracy-control system of the utility model.
Description of symbols: 1 it is proportion magnetic valve A, 2 is filter A, 3 is check valve A, 4 is valve A, 5 is pressure gauge
A, 6 it is low-oxygen gas storage tank, 7 be gas mass flow meter A, 8 be inert gas bottle A, 9 be gas mass flow meter B, 10 is oxygen
Gas or air bottle, 11 be water butt, 12 be counterbalance valve, 13 be check valve B, 14 be sewage draining exit, 15 be water-level gauge, 16 be high purity water
Machine, 17 be valve B, 18 be pressure gauge B, 19 be valve C, 20 be vacuum pump, 21 be proportion magnetic valve B, 22 be filter B, 23
It is inert gas bottle B for check valve C, 24,25 circulating pumps, 26 be flow cell, 27 be dissolved oxygen meter, 28 is computer.
Specific embodiment
The utility model is described in further details with reference to the accompanying drawing.
As shown in Figure 1, a kind of experimental water dissolved oxygen content accuracy-control system provided by the utility model, including hypoxemia
Gas oxygenation component, dissolved oxygen control system, gives water assembly, deaeration in condenser component and indifferent gas at dissolved oxygen sensing circulation loop
Body deoxygenation component.
Wherein, low-oxygen gas oxygenation component includes proportion magnetic valve A1, filter A2, check valve A3, valve A4, pressure gauge
A5, low-oxygen gas storage tank 6, gas mass flow meter A7, inert gas bottle A8, gas mass flow meter B9 and oxygen or air bottle
10；It include water butt 11 and high-purity water dispenser 16 to water assembly；Deaeration in condenser component include at the top of water butt 11 pass through pipeline according to
Pressure gauge B18, valve C19 and the vacuum pump 20 of secondary connection；Inert gas deoxygenation component includes passing through the sequentially connected ratio of pipeline
Example solenoid valve B21, filter B 22, check valve C23 and inert gas bottle B24；Dissolved oxygen sensing circulation loop includes circulating pump 25
With flow cell 26 and dissolved oxygen meter 27；Dissolved oxygen control system includes computer 28；6 entrance of low-oxygen gas air accumulator passes through gas
Mass flowmenter A7 is connect with inert gas bottle A8, is connect by gas mass flow meter B9 with oxygen or air bottle 10, hypoxemia
The outlet of gas storage tank 6 passes through pipeline and the valve A4, check valve A3, filter A2 and the ratio electromagnetism that are arranged on the pipeline
Valve 1 is connected with the low-oxygen gas entrance of 11 bottom of water butt；12 He of counterbalance valve is sequentially connected by pipeline at the top of water butt 11
Check valve B13 is connected with atmosphere, and the bottom of water butt 11 is provided with sewage draining exit 14, and side is provided with water-level gauge 15, high purity water
Machine 16 is connected by valve B17 with water butt 11；Flow cell 26 is connected with dissolved oxygen meter 27, and should by pipeline and setting
Circulating pump 25 and water butt 11 on pipeline form dissolved oxygen sensing circulation loop；In use, dissolved oxygen meter 27 will be for that will measure
As a result it is transmitted to computer 28, computer 28 controls proportion magnetic valve A1 and ratio electricity by calculating sending two path signal respectively
The unlatching amplitude of magnet valve B21.
Wherein, flow cell 26 is provided with dissolved oxygen sensor, and the signal of dissolved oxygen sensor is integrated by dissolved oxygen meter 27
For 4~20mA current signal, which is transmitted to the computer 28, and computer 28 is according to actual measurement dissolved oxygen value and setting
Dissolved oxygen upper and lower limits calculate control signal, be output on proportion magnetic valve A1 and proportion magnetic valve B21, control it and open
Pass ratio, and then control low-oxygen gas and inert gas and intake.
A kind of application method of experimental water dissolved oxygen content accuracy-control system provided by the utility model, including it is as follows
Step:
1) to including that water butt 11 and mixed gas tank 6 vacuumize, air in removal system closes valve A4 and valve C19；
2) by the way that high purity water is added into water butt 11 to water assembly, concrete operations are to open high purity water instrument 16 and valve
B17, water enter in the water butt 11 of vacuum state, until closing high purity water instrument 16 and valve 17 when setting water level.
3) preliminary deoxygenation is carried out to experimental water by deaeration in condenser component, concrete operations are to open vacuum pump 20 and valve
C19 continues to vacuumize to water butt 11；
4) inert gas deoxygenation component and dissolved oxygen sensing circulation loop are opened, when dissolved oxygen meter 27 measures dissolved oxygen content
When higher than the setting value upper limit, proportion magnetic valve B21 is opened, and inert gas purges the water in water butt 11 and carries out deoxygenation, evolution
Gas is discharged into atmosphere by counterbalance valve 12 and check valve B13, when dissolved oxygen meter 28 measures dissolved oxygen content lower than the setting value upper limit
When, proportion magnetic valve B21 is closed, and inert gas stops purging；
5) low-oxygen gas oxygenation component is opened, according to required dissolved oxygen content, sets gas mass flow meter A7 and gas
The flow of mass flowmenter B9, the low oxygen content gas of concentration needed for preparing, when the progress due to corrosion test, oxygen in water
It is consumed when dissolved oxygen meter 27 being caused to measure dissolved oxygen content lower than setting value lower limit, proportion magnetic valve A1 is opened, low oxygen content
Gas enters the water in water butt 11 and carries out micro slow oxygenation, when dissolved oxygen meter 27 measures dissolved oxygen content higher than under setting value
In limited time, proportion magnetic valve A1 is closed, and is stopped oxygenation, is stably maintained at the oxygen content in experimental water in set interval.
The application method test sequence of the utility model control system arranges rationally, and specifically, the utility model uses
The beneficial effect of method is:
1, using low oxygen content mixed gas oxygenation, the dissolved oxygen content rate of change in experimental water can be reduced, is kept away
Exempt from content of oxygen dissolved in water fluctuation, influences experimental result.
2, the vacuum pump first passed through in deaeration in condenser component vacuumizes water butt, removes the dissolved oxygen in a large amount of water, with
The further deoxygenation of inert gas is recycled afterwards, oxygen removal efficiency can be improved, while can greatly reduce the usage amount of inert gas,
Save experimentation cost.
Claims (5)
1. a kind of experimental water dissolved oxygen content accuracy-control system, which is characterized in that including low-oxygen gas oxygenation component, dissolution
Oxygenation measurement circulation loop, gives water assembly, deaeration in condenser component and inert gas deoxygenation component at dissolved oxygen control system；Wherein,
Low-oxygen gas oxygenation component includes proportion magnetic valve A (1), filter A (2), check valve A (3), valve A (4), pressure gauge A
(5), low-oxygen gas air accumulator (6), gas mass flow meter A (7), inert gas bottle A (8), gas mass flow meter B (9) and
Oxygen or air bottle (10)；
It include water butt (11) and high-purity water dispenser (16) to water assembly；
Deaeration in condenser component include with water butt (11) at the top of by the sequentially connected pressure gauge B (18) of pipeline, valve C (19) and
Vacuum pump (20)；
Inert gas deoxygenation component includes passing through the sequentially connected proportion magnetic valve B (21) of pipeline, filter B (22), check valve C
(23) and inert gas bottle B (24)；
Dissolved oxygen sensing circulation loop includes circulating pump (25) and flow cell (26) and dissolved oxygen meter (27)；
Dissolved oxygen control system includes computer (28)；
Low-oxygen gas air accumulator (6) entrance is connect by gas mass flow meter A (7) with inert gas bottle A (8), and gas is passed through
Mass flowmenter B (9) is connect with oxygen or air bottle (10), and low-oxygen gas air accumulator (6) outlet is existed by pipeline and setting
Valve A (4), check valve A (3), filter A (2) and proportion magnetic valve A (1) on the pipeline is low with water butt (11) bottom
Carrier of oxygen entrance is connected；
High-purity water dispenser (16) is connected by valve B (17) with water butt (11)；
Flow cell (26) is connected with dissolved oxygen meter (27), and the circulating pump (25) and water storage for passing through pipeline and being arranged on the pipeline
Bucket (11) forms dissolved oxygen sensing circulation loop；
In use, dissolved oxygen meter (27), for transmitting measurement result to computer (28), computer (28) is for passing through calculating
Issue the unlatching amplitude that two path signal controls proportion magnetic valve A (1) and proportion magnetic valve B (21) respectively.
2. a kind of experimental water dissolved oxygen content accuracy-control system according to claim 1, which is characterized in that flow cell
(26) it is provided with dissolved oxygen sensor, the signal of dissolved oxygen sensor is integrated into 4~20mA electric current letter by dissolved oxygen meter (27)
Number.
3. a kind of experimental water dissolved oxygen content accuracy-control system according to claim 1, which is characterized in that further include
Counterbalance valve (12) and check valve B (13), water butt (11) top are sequentially connected counterbalance valve (12) and check valve B (13) by pipeline
It is connected with atmosphere.
4. a kind of experimental water dissolved oxygen content accuracy-control system according to claim 1, which is characterized in that water butt
(11) bottom is provided with sewage draining exit (14).
5. a kind of experimental water dissolved oxygen content accuracy-control system according to claim 1, which is characterized in that water butt
(11) side is provided with water-level gauge (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920123158.6U CN209182720U (en) | 2019-01-24 | 2019-01-24 | A kind of experimental water dissolved oxygen content accuracy-control system |
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| CN201920123158.6U CN209182720U (en) | 2019-01-24 | 2019-01-24 | A kind of experimental water dissolved oxygen content accuracy-control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113229201A (en) * | 2021-05-19 | 2021-08-10 | 安徽皖涛生态农业科技有限公司 | Intelligent greenhouse fish-vegetable symbiotic system based on resource recycling |
| CN113686765A (en) * | 2021-08-24 | 2021-11-23 | 重庆科技学院 | Dissolved oxygen corrosion simulation device for full-well pipe column of water injection well |
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2019
- 2019-01-24 CN CN201920123158.6U patent/CN209182720U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113229201A (en) * | 2021-05-19 | 2021-08-10 | 安徽皖涛生态农业科技有限公司 | Intelligent greenhouse fish-vegetable symbiotic system based on resource recycling |
| CN113686765A (en) * | 2021-08-24 | 2021-11-23 | 重庆科技学院 | Dissolved oxygen corrosion simulation device for full-well pipe column of water injection well |
| CN113686765B (en) * | 2021-08-24 | 2022-03-01 | 重庆科技学院 | Dissolved oxygen corrosion simulation device for full-well pipe column of water injection well |
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