CN108558030A - A kind of automatic oxygen-enrichment system of water supply and method - Google Patents
A kind of automatic oxygen-enrichment system of water supply and method Download PDFInfo
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- CN108558030A CN108558030A CN201810213715.3A CN201810213715A CN108558030A CN 108558030 A CN108558030 A CN 108558030A CN 201810213715 A CN201810213715 A CN 201810213715A CN 108558030 A CN108558030 A CN 108558030A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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Abstract
The present invention relates to a kind of automatic oxygen-enrichment systems of water supply, including adjustable power supply, pid control module, oxygen generator, oxygenation component and unit dissolved oxygen detection piece, unit dissolved oxygen detection piece is connect with unit, pid control module is connect with adjustable power supply, unit dissolved oxygen detection piece respectively, adjustable power supply is connect with oxygen generator, and oxygen generator is connect with oxygenation component.The invention further relates to a kind of automatic oxygenation methods of water supply, the target oxyty signal for the oxyty signal and setting that pid control module is detected according to unit dissolved oxygen detection piece, adjustable power supply the output phase induced current value is controlled to oxygen generator, oxygen generator generates matched amount of oxygen by electrolysis water, and the oxygen of generation is added to by oxygenation component in unit water supply.The present invention has many advantages, such as that high degree of automation, oxygenation control is accurate, equipment is non-maintaining, saves manual labor.
Description
Technical field
The invention belongs to power plant boiler water treatment field more particularly to a kind of automatic oxygenation systems of power plant electrolytic water supply
System and method.
Background technology
The boiler feedwater processing mode in thermal power plant mostly uses all-volatile treatment mode for a long time, i.e., adds into stove water
Enter ammonium hydroxide and hydrazine, for control stove water in alkalinity, the effect of wherein hydrazine is to remove oxygen micro in oxygen-eliminating device outlet water supply, is made
Water supply is in reproducibility operating mode, and this processing mode is also referred to as reproducibility all-volatile treatment.If being not added with hydrazine, retain residual in water supply
Micro oxygen is deposited, then referred to as oxidisability all-volatile treatment.Under all-volatile treatment operating mode, boiler tubing is by high temperature and high pressure steam
Oxidation, can inner wall surface formed short texture Fe3O4Layer is influenced by flowing accelerated corrosion, and feedwater piping inner wall is formed
Fe3O4It is washed into water-cooling wall, ultimately causes the serious scale of water screen tube.The excessively high one side of water-cooling wall amount of scale buildup can shadow
Boiler heat-transfer efficiency is rung, is on the other hand also possible to that water-cooling wall is caused to block, overheats booster.
Feedwater oxygen treatment is the effective ways of thermal power plant prevention boiler oxidation skin harm.While ammonification, to
A small amount of oxygen is added in water supply（The general 30 μ μ of g/L ~ 150 g/L）, one layer of fine and close F is formed in boiler tubing inner wall2O3Oxidation film,
To inhibit to flow accelerated corrosion, harm of the oxide scale growth to boiler is slowed down from the root cause.It is general at present in oxygenated treatment
All over the oxygenation mode used for gas bomb formula oxygenation method, i.e., using oxygen bottle as air source, by by pressure reducing valve, flow control valve
The aeration device of equal compositions is added in the down-comer of unit oxygen-eliminating device, then passes through economizer entrance and startup separator（Or
Drum）The in-line meter of outlet or artificial chemical examination control oxygen-adding amount.There are many drawbacks for this method：First, existing oxygenation
Device is cumbersome, cannot achieve on-line automatic dosing, and manual labor amount is big；Secondly：Existing aeration device falls behind, oxygen-adding amount
It is difficult to accurately control, with the fluctuation of unit load, cannot achieve the real-time adjustment of oxygen-adding amount；Third, oxygen is to lean on gas steel
Pressure in bottle is added in unit feedwater piping, is had the gas of certain pressure that can not utilize in steel cylinder, is caused the wave of oxygen
Take.
Invention content
The technical problem to be solved in the present invention is that：For it is of the existing technology cannot achieve automatic and accurate control plus
The technical problems such as oxygen, oxygenation are complicated for operation, and manual labor amount is big, the present invention provide one kind can realize oxygenation control accurately to
The automatic oxygen-enrichment system of water and method.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of automatic oxygen-enrichment system of water supply, including adjustable power supply, pid control module, oxygen generator, oxygenation component and unit
Dissolved oxygen detection piece, the unit dissolved oxygen detection piece are connect with unit, the pid control module respectively with the adjustable power supply,
The unit dissolved oxygen detection piece connection, the adjustable power supply are connect with the oxygen generator, the oxygen generator and institute
State the connection of oxygenation component, the oxyty signal and set that the pid control module is detected according to the unit dissolved oxygen detection piece
Fixed target oxyty signal controls the adjustable power supply the output phase induced current value to the oxygen generator, the oxygen
Gas generator generates matched amount of oxygen by electrolysis water, and the oxygen of generation is added to unit water supply by the oxygenation component
In.
The automatic oxygen-enrichment system of above-mentioned water supply, it is preferable that the oxygen generator passes through connecting tube with the oxygenation component
Road connect, the connecting line be equipped with dry component, the connecting line be equipped with first outlet non-return valve and/or it is described plus
The outlet conduit of oxygen component is equipped with second outlet non-return valve.
The automatic oxygen-enrichment system of above-mentioned water supply, it is preferable that the oxygenation component includes that plunger cavity, oxygen enter accent, oxygen
Go out accent, piston, the intermittent piston pump that piston can be driven to be moved in plunger cavity, the first stroke for monitoring piston position
Limiter and the second range limiter, first range limiter are installed on the plunger cavity with second range limiter
On wall, the oxygen enters accent and is connect with the oxygen generator, and the oxygen goes out accent and connect with unit oxygenation point, passes through institute
When stating oxygen and entering accent and be passed through in oxygen to the plunger cavity, the piston moves under the pressure effect of oxygen, when the work
When plug reaches the second range limiter position, the intermittent piston pump startup simultaneously drives the piston toward the first row
The position of journey limiter moves, and the oxygen in the plunger cavity is gone out accent output by oxygen, described in piston arrival
When the first range limiter position, the intermittent piston pump is stopped, and the piston is again toward institute under the action of oxygen
State the position movement of the second range limiter.
The automatic oxygen-enrichment system of above-mentioned water supply, it is preferable that the oxygenation component further includes mobile plug, the movable type
Plug enters mounted on the oxygen in the cavity of accent, and the mobile plug realizes the oxygen under the action of gas pressure
Gas enters the folding of accent.When being passed through oxygen to the plunger cavity, the oxygen enters the mobile plug in accent cavity
Open-top under the pressure effect of oxygen, oxygen enters in plunger cavity body, when oxygen goes out accent output by the oxygen, institute
It states under gas pressure effect of the mobile plug inside the plunger cavity, by mobile plug side compression to outside cavity,
It closes oxygen and enters accent.
The automatic oxygen-enrichment system of above-mentioned water supply, it is preferable that the oxygenation component further includes relief valve, and the relief valve is set to
On the plunger cavity, and the relief valve is connected to the plunger cavity.The plunger cavity passes through the relief valve pressure release.
The automatic oxygen-enrichment system of above-mentioned water supply, it is preferable that the automatic oxygen-enrichment system further includes DCS controllers, and described
DCS controllers respectively with first range limiter, second range limiter, the intermittent piston pump, described let out
Pressure valve connects, and signal is fed back to the DCS controllers when second range limiter detects the piston, described
DCS controllers send out intermittent piston pump described in signal enabling；It will when first range limiter detects the piston
Signal feeds back to the DCS controllers, and the DCS controllers send out signal and stop the intermittent piston pump, and send out signal
Open the relief valve and time-delay closing.
The automatic oxygen-enrichment system of above-mentioned water supply, it is preferable that the oxygen generator includes：Electrolytic cell, production hydrogen mouth, production oxygen
Mouth, cathode, anode, electrolyte, diaphragm, the production hydrogen mouth, the oxygen generating port are set on the electrolytic cell, the oxygen generating port and institute
The connection of oxygenation component is stated, the cathode, the anode are connect with the adjustable power supply.
The automatic oxygen-enrichment system of above-mentioned water supply, it is preferable that the oxygen generator further includes liquid level sensor, moisturizing electromagnetism
Valve, the liquid level sensor, the water supply solenoid valve are set on the electrolytic cell, and the liquid level sensor, moisturizing electricity
Magnet valve is connect with the DCS controllers, and the signal that the DCS controllers are conveyed according to the liquid level sensor is to control
Automatic water supplement is realized in the folding for stating water supply solenoid valve.
The inventive concept total as one, the invention also discloses the water supply based on the automatic oxygen-enrichment system of above-mentioned water supply is automatic
Oxygenation method, includes the following steps：
S1, start adjustable power supply；Keep oxygen generator, pid control module, unit dissolved oxygen detection piece in running order；To
The oxygenation aimed concn signal of the pid control module input setting；
The dissolved oxygen concentration signal is simultaneously fed back to institute by S2, the dissolved oxygen concentration in unit dissolved oxygen detection piece detection unit
State pid control module；
S3, the pid control module are carried out according to the oxygenation aimed concn signal of setting and the dissolved oxygen concentration signal detected
It calculates, and the current value that the adjustable power supply is output to the oxygen generator is controlled to adjust according to result of calculation, to control
The oxygen-producing amount of the oxygen generator；
S4, the oxygen of generation is transported in unit and realizes oxygenation；
S5, S2-S4 step cycles are kept.
The inventive concept total as one, the invention also discloses a kind of water supply based on the automatic oxygen-enrichment system of water supply is automatic
Oxygenation method, including：
When oxygen to be passed through in plunger cavity, piston moves under the pressure effect of oxygen to the position of the second range limiter,
When second range limiter detects the piston, signal is fed back into DCS controllers, the DCS controllers are sent out
The intermittent piston pump of signal enabling；The piston is under the driving effect of the intermittent piston pump to the first range limiter
Position is moved, and the oxygen in the plunger cavity is added in unit water supply, when first range limiter detect it is described
When piston, signal is fed back into the DCS controllers, the DCS controllers send out signal and stop the intermittent piston pump, and
It sends out signal and opens the relief valve and time-delay closing；
When liquid level sensor detects that electrolyte liquid level drops to low liquid level L1, DCS controllers are transmitted a signal to, it is described
DCS controllers send out instruction unpack water supply solenoid valve, pass through the water supply solenoid valve automatic watering；Wait for the liquid level sensor inspection
When measuring electrolyte liquid level and rising to high liquid level H1, the DCS controllers are transmitted a signal to, the DCS controllers send out finger
It enables and closes the water supply solenoid valve.
The present invention generates oxygen by electrolyzing pure water, and electric current and the boiler export content of oxygen dissolved in water of electrolytic cell interlock,
By adjust Faradaic current control oxygen addition, to realize feed water oxygenation it is automatic, accurately control.
Compared with the prior art, the advantages of the present invention are as follows：
1, the present invention can be according to the feedback of the online dissolved oxygen detection components of unit and the dissolved oxygen desired value automatic adjustment electrolysis dress of setting
The electric current set realizes the automatic adjustment of unit oxygen-adding amount by accurately controlling oxygen-producing amount, final to realize the automatic accurate of unit
Oxygenation；And the present invention prepares oxygen by electrolysis water, instead of traditional steel cylinder air source, electrolysis unit is substantially non-maintaining, exempts
Transport carries, replaces the cumbersome labour such as gas cylinder, effectively saves human cost.
2, the oxygen of electrolytic preparation is added in the feedwater piping of unit by the present invention using special piston oxygenation component,
The oxygen-adding amount of aeration device single can adjust the position of the first range limiter and the second range limiter according to field demand, can
It effectively avoids single oxygen-adding amount from crossing large-sized unit water supply dissolved oxygen fluctuation or the too small unit of single dosage and gives water-soluble oxygen long-time
The problem of purpose value is not achieved so that oxygen-adding amount is steady, fluctuation is small, realizes and controls the steady oxygenation of unit.
3, automatic oxygen-enrichment system of the invention combines range limiter, intermittent piston pump, pressure release electricity by control assembly
Magnet valve realizes automatically controlling to the single oxygen-adding amount of oxygenation component.
4, the present invention use special piston oxygenation component, by be arranged the mobile plug entered in plunger cavity in accent,
The other component of pressure release electromagnetic valve united piston oxygenation component, almost may be implemented during each oxygenation oxygen all of,
Not residual gas effectively increases the accuracy of the utilization rate and the control of single oxygen-adding amount of oxygen.
5, automatic oxygen-enrichment system of the invention combines level monitoring component, water compensating valve by control assembly, realizes to oxygen
Generator is automatically replenished the water of electrolysis, is not necessarily to artificial interference.
6, automatic oxygen-enrichment system of the invention realizes the single oxygenation and oxygen to oxygenation component by a controller simultaneously
Gas generator is automatically replenished the control of the water of electrolysis.
Description of the drawings
Fig. 1 is the automatic oxygen-enrichment system schematic diagram of water supply of the embodiment of the present invention.
Respectively mark indicates in Fig. 1：
01, adjustable DC power supply；02, pid control module；03, oxygen generator；31, electrolytic cell；32, hydrogen mouth is produced；33, it produces
Oxygen mouth；34, cathode plate；35, anode plate；36, electrolyte；37, diaphragm；38, ultrasonic level gage；39, water supply solenoid valve；04、
The automatic oxygenation apparatus of plunger type；41, intermittent piston pump；42, piston；43, lower ultrasonic wave range limiter；44, upper ultrasonic wave row
Journey limiter；45, plunger cavity；46, mobile conical plug；47, oxygen enters accent；48, oxygen goes out accent；49, pressure release electromagnetic valve；
05, oxygen drier；06, dryer export non-return valve；07, plunger device outlet non-return valve；08, DCS controllers；09, unit is molten
Oxygen detection piece.
Specific implementation mode
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
It limits the scope of the invention.
System embodiment
Present embodiment discloses a kind of automatic oxygen-enrichment system of power plant electrolytic water supply, the automatic oxygen-enrichment system was as shown in Figure 1, should
Automatic oxygen-enrichment system is by adjustable DC power supply 01, pid control module 02, oxygen generator 03, the automatic oxygenation apparatus 04 of plunger type,
Oxygen drier 05, dryer export non-return valve 06, plunger device outlet non-return valve 07, piston pump DCS controllers 08, online dissolved oxygen
Table 09 forms.Wherein oxygen generator 03 is by electrolytic cell 31, production hydrogen mouth 32, oxygen generating port 33, cathode plate 34, anode plate 35, electrolysis
Liquid 36, diaphragm 37, ultrasonic level gage 38 and water supply solenoid valve 39 form.The automatic oxygenation apparatus of plunger type 04 is by intermittent piston pump
41, piston 42, lower ultrasonic wave range limiter 43, upper ultrasonic wave range limiter 44, plunger cavity 45, mobile conical plug 46,
Oxygen enters accent 47, oxygen goes out accent 48 and pressure release electromagnetic valve 49 forms.Adjustable DC power supply 01 and pid control module 02 it
Between connected by signal cable.Cathode plate 34 and anode plate 35 pass through the positive and negative anodes phase of conducting wire and adjustable DC power supply 01 respectively
Even.It produces outside 32 connecting pipe to workshop of hydrogen mouth, the hydrogen discharge that electrolysis generates is fallen.Oxygen generating port 33 enters accent 47 with oxygen and passes through
Pipeline connects, and oxygen drier 05 and dryer export non-return valve 06 are sequentially connected on pipeline.Mobile conical plug 46 is pacified
In the cavity that oxygen enters accent 47.Oxygen goes out accent 48 and is connected to unit oxygenation point by pipeline, on the pipeline of exit
Connect plunger device outlet non-return valve 07.Lower ultrasonic wave range limiter 43 and upper ultrasonic wave range limiter 44 are attached to column respectively
Fill in chamber 45 outer wall on and the two position-adjustable.Piston 42 passes through mechanical connection, intermittent work with intermittent piston pump 41
41 driving piston 42 of plug pump is reciprocating in plunger cavity.Ultrasonic level gage 38, water supply solenoid valve 39, intermittent piston pump
41, lower ultrasonic wave range limiter 43, upper ultrasonic wave range limiter 44 and pressure release electromagnetic valve 49 pass through cable and DCS controllers
08 connection.
In the present embodiment, adjustable DC power supply 01 be market sale common DC power supply, can export outward 10V~
The dc power of 100V, 1A~100A have control signal input interface, are subjected to external control electric current signal and adjust output
Electric current.
In the present embodiment, adjustable pid control module 02 is the common controller of market sale, has and receives external input
Current signal and the function of carrying out mathematical computations final output control electric current signal.The interface of pid control module 02 is with number
Button and display screen can be manually entered the desired value of unit dissolved oxygen control.
In the present embodiment, DCS controllers 08 are the common controller of market sale, and acceptable external DI signals simultaneously export
DO signals.
In the present embodiment, cathode plate 34 and anode plate 35 are the electrodes of the porous surface made of nickel-plated carbon steel, surface
Porous structure can increase the specific surface area of electrode, increase the efficiency for being electrolysed oxygen processed.Electrolyte 36 is by high purity water（Conductivity≤
0.2μS/cm）The potassium hydroxide solution for the mass percent 30 ± 3% being formulated with top pure grade potassium hydroxide solid.Diaphragm 37
Be asbestos or made of the material with asbestos similar functions, effect be barrier gas by by allow ion and water logical
It crosses.
In the present embodiment, dissolved oxygen desired value is inputted at 02 interface of pid control module, starts adjustable DC power supply 01,
To voltage is applied between cathode plate 34 and anode plate 35, water is electrolysed under electric field action, respectively in cathode plate 34 and anode
Hydrogen and oxygen are precipitated on plate 35, reaction is as follows：
Cathode：2H+ + 2e → H2↑ （Formula 1）
Anode：4OH- + 4e → O2 ↑ + 2H2O （Formula 2）
In the present embodiment, the water of electrolysis is supplemented by water supply solenoid valve 39, when ultrasonic level gage 38 detects electrolyte
When 36 liquid levels drop to low liquid level L1, DCS controllers 08 are transmitted a signal to, DCS controllers 08 send out instruction unpack moisturizing again
Solenoid valve 39, liquid level are closed after rising to high liquid level H1, and the low liquid level L1 and the high liquid level H1 are to set to be stored in DCS
Liquid level numerical value in controller.
In the present embodiment, the hydrogen that cathode generates is emitted into outside workshop by outer discharge pipe in air from production hydrogen mouth 32.Sun
The oxygen that pole generates goes out electrolytic cell 31 from oxygen generating port 33, is dehydrated into oxygen drier 05, by dryer export check
Open-top movable type conical plug 46 enters accent 47 into plunger cavity 45 by oxygen after valve 06.The oxygen constantly gathered in plunger cavity 45 makes
Cavity pressure rises, and pushes down on piston 42, when piston 42 reaches the position of lower ultrasonic wave range limiter 43, DCS controls
Device 08 send out the intermittent piston pump 41 of signal enabling by the oxygen of intracavitary pass sequentially through oxygen outlet chamber 48 and plunger device outlet it is inverse
Only valve 07 is added in unit feedwater piping.When intermittent piston pump 41 drives 42 oxygenation of piston, the positive pressure in plunger cavity 45 will move
The side compression to outside cavity of dynamic formula conical plug 46, closing oxygen, which enters accent 47, prevents oxygen from refunding electrolytic cell 31 by pipeline.Work as work
When plug 42 reaches the position of upper ultrasonic wave range limiter 44, DCS controllers 08 send out signal and stop intermittent piston pump 41, together
When open pressure release electromagnetic valve 49 and the 1s that is delayed and be automatically closed.Pressure reduction in plunger cavity 45 at this time, the oxygen in electrolytic cell 31
Open-top movable type conical plug 46 enters plunger cavity 45, starts next oxygenation cycle.Dryer export non-return valve 05 and plunger device
The effect of outlet non-return valve 06 is to prevent oxygen from falling to rush from negative direction.
In the present embodiment, online dissolved oxygen that the oxygen that is added in unit feedwater piping is dissolved and carried by unit in water
Table 09 detects that the dissolved oxygen concentration detected is input to by data transmission in pid control module 02, according to the oxygenation of setting
Concentration target value, pid control module 02 calculate and issue instructions to automatically adjustable DC power supply 01, adjust adjustable straight galvanic electricity
The size of 01 output current of source.The oxygen making amount of oxygen generator 03 is changed by 31 electric current of electrolytic cell, and electric current is bigger, and oxygen making amount is got over
Height, the amount of oxygen for ultimately joining system also increase.Pass through this control mode, you can realize the automatic control of unit feed water oxygenation
System.
In the present embodiment, the position of lower ultrasonic wave range limiter 43 and upper ultrasonic wave range limiter 44 is removable
, it can be according to the spacing of the demand manual adjustment of live oxygen-adding amount between the two, so as to adjust the size of single oxygen-adding amount.
Embodiment of the method
Present embodiment discloses a kind of automatic oxygenation methods of power plant electrolytic water supply, and described method includes following steps：
（1）10L demineralized waters are injected into clean bucket, are weighed top pure grade KOH solid 4.30kg, are slowly poured into demineralized water
In, use clean metal bar to stir demineralized water, the dissolving of accelerating solid while KOH solids are added.Wait for all solids
After dissolving, electrolyte is injected from the water supply solenoid valve of oxygen generator in electrolytic cell, the preparation of electrolyte is completed.
（2）The 80 μ g/L of input unit water supply oxyty desired value at the interface of pid control module, unit is molten online at this time
It is 6.04 μ g/L that oxygen table, which is shown to water dissolution oxygen concentration, and the spacing of upper and lower ultrasonic level gage is set as 18cm.Start adjustable
DC power supply, output current is 27.1A at this time, and oxygen generator starts electrolytic preparation oxygen, and by oxygenation apparatus be added to
In waterpipe.
During oxygenation, when oxygen to be passed through in plunger cavity 45, piston 42 surpasses downwards under the pressure effect of oxygen
The position of sonic wave travel limiter 43 moves, when ultrasonic wave range limiter 43 detects the piston 42 instantly, signal is anti-
It feeds DCS controllers 08, the DCS controllers 08 send out the intermittent piston pump 41 of signal enabling, the intermittent piston pump 41
Start and the piston 42 is driven to be moved toward the position of the upper ultrasonic wave range limiter 44, by the oxygen in the plunger cavity 45
Gas goes out the output of accent 48 by oxygen and is added in unit water supply；When upper ultrasonic wave range limiter 44 detects the piston 42
When, signal is fed back into the DCS controllers 08, the DCS controllers 08 send out signal and stop the intermittent piston pump 41,
And send out signal and open the pressure release electromagnetic valve 49 and time-delay closing, complete an oxygenation cycle；Then the rest may be inferred, under
One oxygenation cycle.Simultaneously with the progress of oxygenation process, the electrolyte liquid level under electrolysis in electrolytic cell 31 declines, when
When liquid level sensor 38 detects that electrolyte liquid level drops to low liquid level L1, DCS controllers 08, the DCS are transmitted a signal to
Controller 08 sends out instruction unpack water supply solenoid valve 39, passes through 39 automatic watering of the water supply solenoid valve；Wait for the level sensing
When device 38 detects that electrolyte liquid level rises to high liquid level H1, the DCS controllers 08, the DCS controls are transmitted a signal to
Device 08 sends out instruction and closes the water supply solenoid valve 39, and the low liquid level L1 and the high liquid level H1 are to set to be stored in DCS
Liquid level numerical value in controller 08.
After 34 minutes, it is 51.7 μ g/L that the online dissolved oxygen table of unit, which is shown to water dissolution oxygen concentration, is dissolved after 48 minutes
Oxygen concentration is 73.1 μ g/L, and dissolved oxygen concentration is 87.3 μ g/L after 1 hour, and Faradaic current is 12.7A at this time.It is dissolved after 2 hours
Oxygen concentration is 78.4 μ g/L, Faradaic current 14.3A.Hereafter dissolved oxygen concentration fluctuates substantially within the scope of 80 ± 7 μ g/L.
（3）According to the requirement for single oxygen-adding amount stationarity, the spacing of upper and lower ultrasonic level gage is adjusted by 18cm
For 15cm, the fluctuating range of dissolved oxygen reduces after 1 hour, and after about 2 hours, dissolved oxygen concentration is substantially within the scope of 80 ± 4 μ g/L
Fluctuation.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as the protection of the present invention
Range.
Claims (10)
1. a kind of automatic oxygen-enrichment system of water supply, which is characterized in that including adjustable power supply（01）, pid control module（02）, oxygen
Generator（03）, oxygenation component（04）With unit dissolved oxygen detection piece（09）, the unit dissolved oxygen detection piece（09）It is connect with unit,
The pid control module（02）Respectively with the adjustable power supply（01）, the unit dissolved oxygen detection piece（09）Connection, it is described can
Mode power supply（01）With the oxygen generator（03）Connection, the oxygen generator（03）With the oxygenation component（04）Even
It connects, the pid control module（02）According to the unit dissolved oxygen detection piece（09）The oxyty signal that detects and setting
Target oxyty signal controls the adjustable power supply（01）The output phase induced current value is to the oxygen generator（03）, institute
State oxygen generator（03）Matched amount of oxygen is generated by electrolysis water, the oxygen of generation passes through the oxygenation component（04）It is added
Into unit water supply.
2. the automatic oxygen-enrichment system of water supply as described in claim 1, which is characterized in that the oxygen generator（03）Add with described
Oxygen component（04）It is connected by connecting line, the connecting line is equipped with dry component（05）, the connecting line is equipped with
First outlet non-return valve（06）And/or the oxygenation component（04）Outlet conduit be equipped with second outlet non-return valve（07）.
3. the automatic oxygen-enrichment system of water supply as claimed in claim 1 or 2, which is characterized in that the oxygenation component（04）Including column
Fill in chamber（45）, oxygen enter accent（47）, oxygen go out accent（48）, piston（42）, piston can be driven（42）In plunger cavity（45）It is interior
The intermittent piston pump of movement（41）, for monitoring piston（42）First range limiter of position（44）With the second stroke limit
Device（43）, first range limiter（44）With second range limiter（43）It is installed on the plunger cavity（45）Wall
On, the oxygen enters accent（47）With the oxygen generator（03）Connection, the oxygen go out accent（48）With unit oxygenation point
Connection, enters accent by the oxygen（47）Oxygen is passed through to the plunger cavity（45）When interior, the piston（42）In oxygen
The lower movement of pressure effect, when the piston（42）Reach second range limiter（43）When position, the intermittent piston
Pump（41）Start and drives the piston（42）Toward first range limiter（44）Position movement, by the plunger cavity
（45）Interior oxygen goes out accent by oxygen（48）Output, when the piston（42）Reach first range limiter（44）Position
When setting, the intermittent piston pump（41）It is stopped, the piston（42）Again toward second row under the action of oxygen
Journey limiter（43）Position movement.
4. the automatic oxygen-enrichment system of water supply as claimed in claim 3, which is characterized in that the oxygenation component（04）It further include movement
Formula plug（46）, the movable type plug（46）Enter accent mounted on the oxygen（47）Cavity in, and the mobile plug
Son（46）Realize that the oxygen enters accent under the action of gas pressure（47）Folding.
5. the automatic oxygen-enrichment system of water supply as claimed in claim 4, which is characterized in that the oxygenation component（04）It further include pressure release
Valve（49）, the relief valve（49）Set on the plunger cavity（45）On, and the relief valve（49）With the plunger cavity（45）Even
It is logical.
6. the automatic oxygen-enrichment system of water supply as claimed in claim 5, which is characterized in that the automatic oxygen-enrichment system further includes DCS
Controller（08）, and the DCS controllers（08）Respectively with first range limiter（44）, second range limiter
（43）, the intermittent piston pump（41）, the relief valve（49）Connection, when second range limiter（43）Detect institute
State piston（42）When signal fed back into the DCS controllers（08）, the DCS controllers（08）Between sending out described in signal enabling
Formula of having a rest piston pump（41）；When first range limiter（44）Detect the piston（42）When signal is fed back to it is described
DCS controllers（08）, the DCS controllers（08）It sends out signal and stops the intermittent piston pump（41）, and send out signal and beat
Open the relief valve（49）And time-delay closing.
7. the automatic oxygen-enrichment system of water supply as claimed in claim 6, which is characterized in that the oxygen generator（03）Including electrolysis
Slot（31）, production hydrogen mouth（32）, oxygen generating port（33）, cathode（34）, anode（35）, electrolyte（37）, diaphragm（38）, the production hydrogen mouth
（32）, the oxygen generating port（33）Set on the electrolytic cell（31）On, the oxygen generating port（33）With the oxygenation component（04）Connection,
The cathode（34）, the anode（35）With the adjustable power supply（01）Connection.
8. the automatic oxygen-enrichment system of water supply as claimed in claim 7, which is characterized in that the oxygen generator（03）Further include liquid
Level sensor（38）, water supply solenoid valve（39）, the liquid level sensor（38）, the water supply solenoid valve（39）Set on the electrolysis
Slot（31）On, and the liquid level sensor（38）, the water supply solenoid valve（39）With the DCS controllers（08）Connection, institute
State DCS controllers（08）According to the liquid level sensor（38）The signal of conveying controls the water supply solenoid valve（39）Folding
Realize automatic water supplement.
9. a kind of automatic oxygenation method of water supply based on any one of the claim 1~8 automatic oxygen-enrichment system of water supply, feature
It is, includes the following steps：
S1, start adjustable power supply（01）；Make oxygen generator（03）, pid control module（02）, unit dissolved oxygen detection piece（09）
It is in running order；To the pid control module（02）Input the oxygenation aimed concn signal of setting；
S2, the unit dissolved oxygen detection piece（09）It detects the dissolved oxygen concentration in unit and feeds back the dissolved oxygen concentration signal
To the pid control module（02）；
S3, the pid control module（02）According to the oxygenation aimed concn signal of setting and the dissolved oxygen concentration signal detected
It is calculated, and the adjustable power supply is controlled to adjust according to result of calculation（01）It is output to the oxygen generator（03）Electricity
Flow valuve, to control the oxygen generator（03）Oxygen-producing amount；
S4, the oxygen of generation is transported in unit and realizes oxygenation；
S5, S2-S4 step cycles are kept.
10. a kind of automatic oxygenation method of water supply based on the automatic oxygen-enrichment system of water supply according to any one of claims 8, which is characterized in that
Including：
When oxygen is passed through plunger cavity（45）When interior, piston（42）To the second range limiter under the pressure effect of oxygen（43）
Position movement, when second range limiter（43）Detect the piston（42）When, signal is fed back into DCS controllers
（08）, the DCS controllers（08）Send out the intermittent piston pump of signal enabling（41）；The piston（42）In the intermittent work
Plug pump（41）Driving effect under to the first range limiter（44）Position movement, by the plunger cavity（45）Interior oxygen adds
Enter into unit water supply, when first range limiter（44）Detect the piston（42）When, signal is fed back to described
DCS controllers（08）, the DCS controllers（08）It sends out signal and stops the intermittent piston pump（41）, and send out signal and beat
Open the relief valve（49）And time-delay closing；
Work as liquid level sensor（38）Detect electrolyte（37）When liquid level drops to low liquid level L1, DCS controls are transmitted a signal to
Device（08）, the DCS controllers（08）Send out instruction unpack water supply solenoid valve（39）, pass through the water supply solenoid valve（39）Automatically
Add water；Wait for the liquid level sensor（38）Detect electrolyte（37）When liquid level rises to high liquid level H1, institute is transmitted a signal to
State DCS controllers（08）, the DCS controllers（08）It sends out instruction and closes the water supply solenoid valve（39）.
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| US20140042104A1 (en) * | 2012-03-20 | 2014-02-13 | Z (P) Epc Electric Power Research Institute | Process for feed-water oxygenating treatment in boiler in power station |
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