CN106774020A - For the aeration water quality regulating device of spike cooling system - Google Patents
For the aeration water quality regulating device of spike cooling system Download PDFInfo
- Publication number
- CN106774020A CN106774020A CN201710082952.6A CN201710082952A CN106774020A CN 106774020 A CN106774020 A CN 106774020A CN 201710082952 A CN201710082952 A CN 201710082952A CN 106774020 A CN106774020 A CN 106774020A
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- China
- Prior art keywords
- water quality
- regulating device
- aeration water
- blow
- spike
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25458—Opto isolation, optical separation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The present invention relates to thermoelectricity Air-cooled Unit field, a kind of aeration water quality regulating device for spike cooling system is disclosed, the aeration water quality regulating device includes：Conductivity meter, the electrical conductivity of the cooling working medium for measuring the spike cooling system；Blow-off line；Regulating valve on the blow-off line；And controller, the aperture for adjusting the regulating valve based on measured electrical conductivity.The present invention can realize that the water quality of spike cooling system is automatically adjusted, and both be avoided that because the too small caused concentration rate of blowdown flow rate is too high and heat exchanger tube fouling, be avoided that again because of the excessive caused water resource waste of blowdown flow rate.
Description
Technical field
The present invention relates to thermoelectricity Air-cooled Unit field, in particular it relates to a kind of water quality adjustment for spike cooling system
Device.
Background technology
Due to remarkable water saving ability, thermoelectricity Air-cooled Unit is developed rapidly in NORTHWEST CHINA water-deficient area.When summer gas
When temperature is higher, the back pressure of Air-cooled Unit is higher to cause Air-cooled Unit to be unable to maintain that higher load is run, and now needs in air cooler
Set up spike cooling system in group to reduce the back pressure of Air-cooled Unit, optimization Air-cooled Unit maintains the ability of heavy-duty service.
The structure of current spike cooling system is general as shown in figure 1, its operation principle is：Spike water circulating pump 6 is used for
During cooling working medium in spike cooling pond 8 pumped into spike cooling tower 7, wherein cooling working medium enter spike cooling tower 7 it
Preceding heat absorption, subsequently into carry out cooling down in spike cooling tower 7 and after the cooling period free settling in spike cooling pond 8, then
Cooling working medium in spike cooling pond 8 is sucked so as to realize the circulation of cooling working medium by spike water circulating pump 6 again；Water compensating valve
9 are used for timely supplement cooling working medium in spike cooling pond 8 to maintain the liquid level in spike cooling pond 8.
Because the continuous evaporation of cooling working medium during circulating cooling can cause the impurity in cooling working medium constantly to concentrate, and
And after concentration rate exceedes certain value, it will cause heat exchanger tube fouling, therefore in order to prevent from being cooled down during circulating cooling
The concentration rate of working medium is too high, and spike cooling system needs to carry out blowdown in time.Current way is first to chemically examine in the lab
The concentration rate of cooling working medium, then judges whether to need to carry out blowdown according to result of laboratory test, and too high in concentration rate and need
When wanting blowdown, manual unlocking manual blowdown atmospheric valve 10 to carry out blowdown, as shown in Figure 2.
Due to Air-cooled Unit load variations and temperature Change can cause the fluctuation of actual evaporation very big round the clock, therefore be
By concentration rate control in certain scope, blowdown flow rate is also required to correspondingly change.Therefore, manual blowdown mode cannot root
Factually concentration rate result in border judges whether to need blowdown in time.This causes two kinds of consequences：1) some time blowdown flow rate mistakes
Small, concentration rate is too high, causes heat exchanger tube fouling；2) some time blowdown flow rates are excessive, cause water resource waste.
The content of the invention
It is an object of the invention to provide a kind of aeration water quality regulating device for spike cooling system, the aeration water quality regulating device energy
Enough realize that the water quality of spike cooling system is automatically adjusted, be both avoided that because the too small caused concentration rate of blowdown flow rate is too high and heat exchange
Pipe fouling, is avoided that because of the excessive caused water resource waste of blowdown flow rate again.
To achieve these goals, the present invention provides a kind of aeration water quality regulating device for spike cooling system, its feature
It is that the aeration water quality regulating device includes：Conductivity meter, the electrical conductivity of the cooling working medium for measuring the spike cooling system；
Blow-off line；Regulating valve on the blow-off line；And controller, for being adjusted based on measured electrical conductivity
The aperture of the regulating valve.
Preferably, the spike cooling system includes spike water circulating pump, it is characterised in that the blow-off line is arranged on
On the outlet pressure pipeline of the spike water circulating pump.
Preferably, sleeve pipe is installed, the electrode of the conductivity meter is installed in described sleeve pipe on the blow-off line.
Preferably, it is silk mouthful connection between the electrode and described sleeve pipe of the conductivity meter.
Preferably, described sleeve pipe is welded on the blow-off line.
Preferably, it is characterised in that the aeration water quality regulating device also includes the flowmeter on the blow-off line, uses
In measurement blowdown flow rate.
Preferably, the distance between the flowmeter and described regulating valve be not less than 10 times of the blow-off line caliber,
And the flowmeter is located at the downstream of the regulating valve.
Preferably, the aeration water quality regulating device also includes：Information acquisition unit, for gathering the letter on the cooling working medium
Breath；And information process unit, for being processed the information for collecting and the information after treatment is carried out into remote transmission.
Preferably, described information processing unit includes：Electromagnetic isolation module, for what is exported to described information collecting unit
Signal carries out electromagnetic isolation；Low-pass filtering module, the signal for electromagnetic isolation module output carries out LPF；Amplify
Module, for being amplified to the signal that the low-pass filtering module is exported；Voltage to frequency convert module, for the amplification
The signal of module output carries out voltage to frequency convert；And photoelectric conversion module, for the voltage to frequency convert module is defeated
The signal for going out is converted into optical signal and the optical signal to being changed carries out remote transmission.
Preferably, the controller is any one in PID controller, PI controllers and single-chip microcomputer.
By above-mentioned technical proposal, the electrical conductivity of cooling working medium can be measured due to conductivity meter, controller can be based on
Measured electrical conductivity adjusts the aperture of regulating valve, therefore the present invention can realize that the water quality of spike cooling system is adjusted automatically
Section, had both been avoided that because the too small caused concentration rate of blowdown flow rate is too high and heat exchanger tube fouling, is avoided that again and led because blowdown flow rate is excessive
The water resource waste of cause.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with following tool
Body implementation method is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structure chart of existing spike cooling system；
Fig. 2 is the pollution discharge structure schematic diagram of existing spike cooling system；
Fig. 3 is the schematic block diagram of the aeration water quality regulating device according to one embodiment of the present invention；
Fig. 4 is the connection signal between the main equipment of aeration water quality regulating device of the invention and spike cooling system
Figure；
Fig. 5 is that another connection between the main equipment of aeration water quality regulating device of the invention and spike cooling system is shown
It is intended to；
Fig. 6 is another schematic block diagram of the aeration water quality regulating device according to one embodiment of the present invention；
Fig. 7 is the another schematic block diagram of the aeration water quality regulating device according to one embodiment of the present invention；And
Fig. 8 is the schematic block diagram of the information process unit of the aeration water quality regulating device according to one embodiment of the present invention.
Description of reference numerals
The blow-off line of 1 conductivity meter 2
The controller of 3 regulating valve 4
The spike water circulating pump of 5 flowmeter 6
The spike cooling pond of 7 spike cooling tower 8
The manual blowdown atmospheric valve of 9 water compensating valve 10
The conductivity meter body of 11 conductivity meter electrode 12
The information process unit of 13 information acquisition unit 14
The low-pass filtering module of 81 electromagnetic isolation module 82
The voltage to frequency convert module of 83 amplification module 84
85 photoelectric conversion modules
Specific embodiment
Specific embodiment of the invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The present invention provides a kind of aeration water quality regulating device for spike cooling system, as shown in figure 3, the aeration water quality regulating device
Conductivity meter 1, blow-off line 2, regulating valve 3 and controller 4 can be included.Wherein, conductivity meter 1 is used to measure the spike
The electrical conductivity of the cooling working medium of cooling system.Regulating valve 3 is installed on the blow-off line 2.Controller 4 is then used for based on electricity
Electrical conductivity measured by electrical conductivity instrument 1 adjusts the aperture of the regulating valve 3.
So, the aeration water quality regulating device for spike cooling system of the invention can be realized as spike cooling system
Quality of cooling water automatic pollution discharge and water quality automatically adjust, solve in the prior art manual blowdown operation cannot follow in time it is cold
But spike cooling system fouling or the drawbacks of water resource waste caused by working medium change.And, water quality of the invention is adjusted
Regulating device can also be in time according to Air-cooled Unit outside running environment change, the change of unit load etc. automatically adjust blowdown flow rate
To meet the requirement of concentration rate, make concentration rate stabilization in the reasonable scope.
Wherein, as shown in figure 3, conductivity meter 1 can include conductivity meter body 12 and conductivity meter electrode 11.Electrical conductivity
Instrument electrode 11 can be connected by signal cable with conductivity meter body 12.
Conductivity meter electrode 11 can be directly protruding into the spike cooling pond 8 of spike cooling system shown in Fig. 1, to measure
The electrical conductivity of cooling working medium.
Certainly, for the ease of the reason such as replacing of conductivity meter electrode, can also be installed first on the blow-off line 2
, then be installed to the conductivity meter electrode 11 in described sleeve pipe by sleeve pipe.Wherein, the conductivity meter electrode 11 and the set
Can be silk mouthful connection between pipe, in order to the dismounting of conductivity meter electrode 11.In addition, described sleeve pipe can for example be welded on
On the blow-off line 2.In fact, mounting means of the application not to conductivity meter electrode 11 and sleeve pipe is limited, as long as
The mounting means for being used can be easy to the dismounting of conductivity meter electrode 11, sleeve pipe can be made to be fixed on blow-off line 2, can
Enough meet the requirement of the application.
In order to cost-effective, aeration water quality regulating device of the invention can utilize the blow-off pipe of existing spike cooling system
Road, manual blowdown atmospheric valve 10 that also will be shown in Fig. 2 is substituted for regulating valve 3, as shown in Figure 4.In this embodiment,
Conductivity meter electrode 11 can be arranged on blow-off line 2 using sleeve pipe mounting means as described above, as shown in Figure 4.
Certainly, in order that blowdown can be passed straight back to downstream user in the case where there is pressure, as shown in figure 5, described
Blow-off line 2 is preferably mounted on the outlet pressure pipeline of the spike water circulating pump 6 of spike cooling system, and non-used is existing
The blow-off line of spike cooling system.In this embodiment, conductivity meter electrode 11 can be pacified using sleeve pipe as described above
Dress mode is arranged on blow-off line 2, as shown in Figure 5 so that aeration water quality regulating device of the invention and spike cooling system
Former main equipment between only one of which pipe joint, be easy to integrated, the complete set of the aeration water quality regulating device.
Further, since the conductivity value of cooling working medium can indirectly reflect the concentration rate of cooling working medium, therefore, work as conductance
Rate instrument 1 sends measured conductivity value to after controller 4, controller 4 can first by measured conductivity value with
Default conductivity value is compared, and then, if measured conductivity value matches with default conductivity value, illustrates bosher
The concentration rate of matter is in metastable zone of reasonableness, then maintain the aperture of regulating valve 3 constant, if measured conductance
Rate value is more than default conductivity value, illustrate that the concentration rate of cooling working medium is too high, then promote automatically the aperture increasing of regulating valve 3 with
Blowdown flow rate is increased, if measured conductivity value is less than default conductivity value, illustrates that the concentration rate of cooling working medium is too low, then
The automatic aperture for promoting regulating valve 3 reduces to reduce blowdown flow rate.So, the adjustment by controller 4 to the aperture of regulating valve 3,
Just automatically the electrical conductivity of cooling working medium can be maintained in certain zone of reasonableness such that it is able to automatic, effectively and timely
The concentration rate of ground control cooling working medium.
Preferably, the controller 4 can be any in PID controller, PI controllers, PLC, single-chip microcomputer etc.
One.
In another preferred embodiment of the invention, as shown in fig. 6, the aeration water quality regulating device can also include peace
Flowmeter 5 on the blow-off line 2, for measuring blowdown flow rate.So by combining measurement of the flowmeter 5 to blowdown flow rate
And the measurement of the original refill flow table of spike cooling system, it becomes possible to exactly grasp spike cooling system rate of water make-up,
Blowdown flow rate, evaporation and windage loss amount etc., consequently facilitating power plant's reinforcing water affairs management, enabling reasonable use of water, it is to avoid water is provided
The waste in source.In addition, the blowdown flow rate measured by flowmeter 5 can also be transmitted to main frame, checked in order to staff,
So as to play dependent surveillance effect.
In addition, in this embodiment, the flowmeter 5 is preferably not less than described with the distance between the regulating valve 3
10 times of the caliber of blow-off line 2, and the flowmeter 5 is located at the downstream of the regulating valve 3.
In addition, in this embodiment, conductivity meter electrode 11, regulating valve 3 and flowmeter 5 are installed in blow-off line
On 2, so that only one of which pipe between aeration water quality regulating device of the invention and the former main equipment of spike cooling system
Pipeline joint, is easy to integrated, the complete set of the aeration water quality regulating device.
In addition, in this embodiment, when as shown in Figure 5 by the blow-off line 2 installed in spike cooling system
Spike water circulating pump 6 outlet pressure pipeline on when, blowdown now equivalent to sump pressure blowdown, therefore with shown in Fig. 4
Pond static pressure blowdown mode compare, sump pressure blowdown mode can either cause that blowdown flow rate is easily measured, again the row of enabling to
The regulation of dirt amount is relatively sensitive.
In another preferred embodiment of the invention, as shown in fig. 7, the aeration water quality regulating device can also include：
Information acquisition unit 13, for gathering the information on the cooling working medium；And information process unit 14, for collecting
Information processed and the information after treatment carried out into remote transmission.So, staff to avoid the need for collection in worksite cold
But the information of working medium, had both avoided the injury that the continuation strong noise at scene is caused to staff, and staff is alleviated again
Working strength.
Information acquisition unit 13 can be the information collecting device of such as sensor etc, and it can gather such as bosher
The information such as temperature, the pressure of matter.The signal of the output of information acquisition unit 13 is typically analog signalses.
The structure of information process unit 14 can with varied, as long as can realize information treatment and remote transmission i.e.
Can.The one of which structure of described information processing unit 14 can be with as shown in figure 8, it includes：Electromagnetic isolation module 81, for right
The signal (typically analog signalses) of the output of described information collecting unit 13 carries out electromagnetic isolation；Low-pass filtering module 82, uses
LPF is carried out in the signal of the electromagnetic isolation module 81 output, the burst in signal and interference are filtered；Put
Big module 83, for being amplified to the signal that the low-pass filtering module 82 is exported；Voltage to frequency convert module 84, for right
The signal of the output of the amplification module 83 carries out voltage to frequency convert, so as to analog signalses are transformed into pulse signal, the arteries and veins
The frequency for rushing signal is directly proportional to the size of the analog signalses of input；And photoelectric conversion module 85, for by the voltage
The signal of the output of frequency translation module 84 is converted into optical signal and the optical signal to being changed carries out remote transmission.Thus complete
The remote transmission of on-site signal prepares.Due to the output of photoelectric conversion module 85 is optical signal, therefore can be entered using optical fiber
The remote transmission of row signal.Certainly, except using optical fiber, used as remote transmission medium, information process unit 14 can also use nothing
The communication networks such as gauze network, such as CDMA, LTE carry out remote transmission.
After information process unit 14 carries out remote transmission to the information that information acquisition unit 13 is gathered, remote signal connects
Receiving end can just receive the real time information of the cooling working medium on spike cooling system, for example, remote signal receiving terminal can be with
The optical signal that the optical signal of the remote transmission of photoelectric conversion module 85 is received using optical-electrical converter (not shown) and will be received
Electric signal is converted into, then frequency signal is changed according to the principle of linear transformation using frequency/voltage converter (not shown)
It is voltage signal to complete signals revivification, signal filtering is completed using low pass filter (not shown) afterwards, finally using photoelectricity
Isolation element (not shown) is to measurement of correlation interface output signal.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in range of the technology design of the invention, various letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy is no longer separately illustrated.
Additionally, can also be combined between a variety of implementation methods of the invention, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of aeration water quality regulating device for spike cooling system, it is characterised in that the aeration water quality regulating device includes：
Conductivity meter, the electrical conductivity of the cooling working medium for measuring the spike cooling system；
Blow-off line；
Regulating valve on the blow-off line；And
Controller, the aperture for adjusting the regulating valve based on measured electrical conductivity.
2. aeration water quality regulating device according to claim 1, wherein the spike cooling system includes spike water circulating pump, its
It is characterised by, the blow-off line is arranged on the outlet pressure pipeline of the spike water circulating pump.
3. aeration water quality regulating device according to claim 2, it is characterised in that sleeve pipe, institute are provided with the blow-off line
The electrode for stating conductivity meter is installed in described sleeve pipe.
4. aeration water quality regulating device according to claim 3, it is characterised in that the electrode and described sleeve pipe of the conductivity meter
Between be silk mouthful connection.
5. aeration water quality regulating device according to claim 3, it is characterised in that described sleeve pipe is welded on the blow-off line
On.
6. the aeration water quality regulating device according to any claim in claim 1 to 5, it is characterised in that the water quality adjustment
Device also includes the flowmeter on the blow-off line, for measuring blowdown flow rate.
7. aeration water quality regulating device according to claim 6, it is characterised in that between the flowmeter and the regulating valve
Distance is not less than 10 times of the blow-off line caliber, and the flowmeter is located at the downstream of the regulating valve.
8. aeration water quality regulating device according to claim 1, it is characterised in that the aeration water quality regulating device also includes：
Information acquisition unit, for gathering the information on the cooling working medium；
Information process unit, for being processed the information for collecting and carries out remote transmission by the information after treatment.
9. aeration water quality regulating device according to claim 8, it is characterised in that described information processing unit includes：
Electromagnetic isolation module, for carrying out electromagnetic isolation to the signal that described information collecting unit is exported；
Low-pass filtering module, the signal for electromagnetic isolation module output carries out LPF；
Amplification module, for being amplified to the signal that the low-pass filtering module is exported；
Voltage to frequency convert module, for carrying out voltage to frequency convert to the signal that the amplification module is exported；And
Photoelectric conversion module, for signal that the voltage to frequency convert module is exported to be converted into optical signal and to being changed
Optical signal carries out remote transmission.
10. aeration water quality regulating device according to claim 1, it is characterised in that the controller is PID controller, PI controls
Any one in device processed and single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710082952.6A CN106774020A (en) | 2017-02-16 | 2017-02-16 | For the aeration water quality regulating device of spike cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710082952.6A CN106774020A (en) | 2017-02-16 | 2017-02-16 | For the aeration water quality regulating device of spike cooling system |
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| Publication Number | Publication Date |
|---|---|
| CN106774020A true CN106774020A (en) | 2017-05-31 |
Family
ID=58957563
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710082952.6A Pending CN106774020A (en) | 2017-02-16 | 2017-02-16 | For the aeration water quality regulating device of spike cooling system |
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|---|---|---|---|---|
| JPH0568961A (en) * | 1991-09-18 | 1993-03-23 | Masanori Tashiro | Quality control of cooling water |
| JP2010149054A (en) * | 2008-12-25 | 2010-07-08 | Hakuto Co Ltd | Method for controlling water quality in circulating cooling water system |
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| CN102445929A (en) * | 2011-09-20 | 2012-05-09 | 成都四通新能源技术有限公司 | Circulated water system of thermal power plant |
| CN202519112U (en) * | 2012-05-02 | 2012-11-07 | 天津天化科威水处理技术有限公司 | Intelligent on-line monitoring, dosing and drainage control system for cooling circulating water system |
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| CN104656692A (en) * | 2015-02-10 | 2015-05-27 | 西安西热水务环保有限公司 | System and method for controlling concentration ratio of circulating water using decarbonized and demineralized water as supplementing water |
| CN104991579A (en) * | 2015-07-03 | 2015-10-21 | 西安西热水务环保有限公司 | System and method for controlling concentration ratio of open type circulating cooling water system |
| CN105948315A (en) * | 2016-05-27 | 2016-09-21 | 慈颂（上海）环保科技有限公司 | Online water quality monitoring and treating system for circulating water of fully-automatic cooling tower |
-
2017
- 2017-02-16 CN CN201710082952.6A patent/CN106774020A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0568961A (en) * | 1991-09-18 | 1993-03-23 | Masanori Tashiro | Quality control of cooling water |
| JP2010149054A (en) * | 2008-12-25 | 2010-07-08 | Hakuto Co Ltd | Method for controlling water quality in circulating cooling water system |
| CN202159248U (en) * | 2011-07-13 | 2012-03-07 | 北京约谛化工技术公司 | Water treatment controller in recirculated cooling water system |
| CN102445929A (en) * | 2011-09-20 | 2012-05-09 | 成都四通新能源技术有限公司 | Circulated water system of thermal power plant |
| CN202519112U (en) * | 2012-05-02 | 2012-11-07 | 天津天化科威水处理技术有限公司 | Intelligent on-line monitoring, dosing and drainage control system for cooling circulating water system |
| CN204268652U (en) * | 2014-11-26 | 2015-04-15 | 北京洁禹通环保科技有限公司 | A kind of subway station air conditioning cooling water system automatic sewage discharging device |
| CN104656692A (en) * | 2015-02-10 | 2015-05-27 | 西安西热水务环保有限公司 | System and method for controlling concentration ratio of circulating water using decarbonized and demineralized water as supplementing water |
| CN104991579A (en) * | 2015-07-03 | 2015-10-21 | 西安西热水务环保有限公司 | System and method for controlling concentration ratio of open type circulating cooling water system |
| CN105948315A (en) * | 2016-05-27 | 2016-09-21 | 慈颂（上海）环保科技有限公司 | Online water quality monitoring and treating system for circulating water of fully-automatic cooling tower |
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