CN203890111U - Safe and automatic PH value regulation device - Google Patents
Safe and automatic PH value regulation device Download PDFInfo
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- CN203890111U CN203890111U CN201420322646.7U CN201420322646U CN203890111U CN 203890111 U CN203890111 U CN 203890111U CN 201420322646 U CN201420322646 U CN 201420322646U CN 203890111 U CN203890111 U CN 203890111U
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Abstract
The utility model discloses a safe and automatic PH value regulation device which comprises two conductivity instruments, a metering pump, a control box and a medicine dissolving tank, wherein a NaOH solution is arranged in the medicine dissolving tank; the NaOH solution is pumped into a cold water circulation system in a generator through the metering pump and a liquid delivery pipe; and start or stop of the metering pump is controlled through the control box by signals of the two conductivity instruments. The safe and automatic PH value regulation device has the advantages that the safe and automatic PH value regulation device disclosed by the utility model is added under the condition that the water is treated by a cold water treatment device in the original generator, so that the quality of cold water in the generator can reach the standard or reach a higher industrial standard, and the device is safe and reliable.
Description
[technical field]
The utility model relates to the utility appliance of a kind of thermal power plant electric generator inner cooling water circulation system, belongs to the water treatment field in environmental technology, especially a kind of utility appliance that can make electric generator inner cooling water water quality what unfavourable condition in office be issued to requirements at the higher level.
[background technology]
At present, the industry standard of high-rating generator inner cold water water quality is more and more higher, from before specific conductivity≤2uS/cm, pH value 7.0～9.0, copper≤40ug/L (DL/T801-2002), become present specific conductivity 0.4～2.0uS/cm, pH value 8.0～9.0, copper≤20ug/L (DL/T801-2010).The raising of industry standard reduces the copper corrosion rate of coil greatly, but makes the difficulty of inner cold water processing raise simultaneously.
In prior art, commonplace safe method is to adopt ion exchange resin to process electric generator inner cooling water.Alone ion exchange resin is processed, in the situation that the sealing of electric generator inner cooling water circulation system is comparatively tight, can reach reluctantly pH value more than 8.0, if but sealed bad in the situation that in electric generator inner cooling water circulation system, due to the impact of carbonic acid gas, the pH value of inner cold water is difficult to reach more than 8.
For the unit of double-water internal cooling, although the industry standard of its inner cold water water quality is put widelyr: specific conductivity≤5uS/cm, pH value 7.0～9.0, copper≤40ug/L, but due to the construction problem of inner cold water system itself, affected by great amount of carbon dioxide, the processing of depending merely on ion exchange resin is also difficult to make pH value to remain on more than 7.0, therefore also causes the severe overweight of cupric ion.
What therefore, need to be transformed prior art, so that also can reach very safely industry standard under electric generator inner cooling water water quality disadvantageous operating mode in office.
[utility model content]
The purpose of this utility model is to tackle in the not good situation of more above-mentioned inner cold water system conditions, use ion-exchange resin technique can not make inner cold water pH value qualified, the device that provides a kind of electric generator inner cooling water pH value safety automation to regulate, to coordinate original ion-exchange resin technique in the situation that its use can make pH value raise higher continuing to use, thereby reach industry standard.
For achieving the above object, the technical solution of the utility model is:
PH value safety automation setting device, comprise electric generator inner cooling water circulation system, online specific conductivity table, controlling box, volume pump, molten medicine-chest, liquid level switch, described online specific conductivity table is in order to detect and to show the conductivity value of the inner cold water in described electric generator inner cooling water circulation system, in described molten medicine-chest, certain density basic solution is housed, squeeze into electric generator inner cooling water circulation system by volume pump and tubing, the startup of described volume pump or stop being subject to by controlling box the signal control of online specific conductivity table, described liquid level switch is for responding to the liquid level of molten medicine-chest, described volume pump start or stop the control that is also simultaneously subject to described Level Detection signal.
Further, described online specific conductivity table comprises online specific conductivity Table A and online specific conductivity table B, described online specific conductivity Table A is in order to detect and to show the conductivity value of a measuring point of the inner cold water in described electric generator inner cooling water circulation system, and described online specific conductivity table B is in order to detect and to show the conductivity value of another measuring point of the inner cold water in described electric generator inner cooling water circulation system.
Further, described online specific conductivity Table A is provided with low conductivity alarming value and high conductivity alarming value, and sent to controlling box by surveyed conductivity value triggering low conductivity guard signal or high conductivity guard signal, determine the startup of volume pump or stop according to signal source by controlling box.
Further, described online specific conductivity table B is provided with high conductivity alarming value, and triggers high conductivity guard signal by surveyed conductivity value and send to controlling box, is determined the startup of volume pump or stops according to signal source by controlling box.
Further, described liquid level switch is installed on molten medicine-chest inside, for respond to liquid level in molten medicine-chest on it or under.
Further, described volume pump is corrosion resistant diaphragm type low discharge metering pump.
Further, described molten medicine-chest is used for loading certain density NaOH solution, and it can be PE material, can be also material more than stainless steel 304.
Compared with prior art, the utlity model has following advantage:
The in the situation that of original electric generator inner cooling water treatment device processing, increase and use setting device described in the utility model, can make the water quality reaching standard of electric generator inner cooling water or reach higher industry standard, and safety, reliable.
[brief description of the drawings]
Fig. 1 is structure and the system diagram of the utility model pH value safety automation setting device.
[embodiment]
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
PH value safety automation setting device, as shown in Figure 1, comprises online specific conductivity Table A 1, online specific conductivity table B2, controlling box 3, volume pump 4, molten medicine-chest 5, liquid level switch 6, electric generator inner cooling water circulation system 7, tubing 8.Wherein said online specific conductivity Table A 1 is in order to detect and to show the conductivity value of a measuring point of the inner cold water in electric generator inner cooling water circulation system 7, online specific conductivity Table A 1 itself can arrange low conductivity alarming value and high conductivity alarming value, and sent to controlling box 3 by surveyed conductivity value triggering low conductivity guard signal or high conductivity guard signal, determine the startup of volume pump 4 or stop according to signal source by controlling box 3.Described online specific conductivity table B2 is in order to detect and to show the conductivity value of another measuring point of the inner cold water in electric generator inner cooling water circulation system 7, online specific conductivity table B2 itself can arrange high conductivity alarming value, and trigger high conductivity guard signal by surveyed conductivity value and send to controlling box 3, determine the startup of volume pump 4 or stop according to signal source by controlling box 3.Described controlling box 3 is made up of some electrical elements, receive low guard signal, normal signal, the high guard signal of online specific conductivity Table A 1, high guard signal, the non-high guard signal of online specific conductivity table B2, liquid level switch 6 open signal and close signal, according to these signals by the startup of the effect control volume pump 4 of some electrical elements or stop.Described volume pump 4, for making the NaOH solution in molten medicine-chest enter electric generator inner cooling water circulation system.Described molten medicine-chest 5 is for loading certain density NaOH solution.Described liquid level switch 6 is installed on a certain height of molten medicine-chest 5 inside, for respond to liquid level in molten medicine-chest 5 on it or under, to protect volume pump 4 to avoid idle running.
Principle of work of the present utility model is as follows: between the specific conductivity of the inner cold water in electric generator inner cooling water circulation system 7 and pH value, have certain corresponding relation, adding after alkaline matter (NaOH), when specific conductivity raises, pH value also and then raises, and is therefore the most safe and reliable by realizing the adjustment of pH value to the control of specific conductivity.
Online specific conductivity Table A 1 is surveyed the specific conductivity of the inner cold water in electric generator inner cooling water circulation system 7, and when specific conductivity is during lower than set low alarming value, volume pump 4 starts; When specific conductivity becomes when normal, volume pump 4 continues operation in the case; When specific conductivity is during higher than set high alarming value, volume pump 4 is out of service; When specific conductivity becomes when normal, volume pump 4 still stops in the case.The utility model is considered that online specific conductivity Table A 1 breaks down and can not be triggered high guard signal, therefore design another piece and survey equally the online specific conductivity table B2 of another measuring point of the inner cold water in electric generator inner cooling water circulation system 7, as long as triggered the high guard signal of online specific conductivity table B2, volume pump 4 also can stop.Beat and caused volume pump 4 to dally in order to prevent the liquid in molten medicine-chest 5, liquid level also can make volume pump 4 unconditionally stop lower than liquid level switch 6 positions, when liquid level is higher than liquid level switch 6, volume pump 4 could automatically start or stop according to the signal of online specific conductivity Table A 1 and online specific conductivity table B2.
In addition, for easy to use, on controlling box 3, the control of volume pump 4 is had to three twist switches, be respectively manually, stop and automatically, and be provided with a run indicator, in order to display working condition.
As described above, it is only this novel preferred embodiment, when not limiting with this scope of this novel enforcement, the simple equivalence of generally doing according to this novel claim and novel description changes and modifies, and all still belongs in the scope that this new patent contains.
Claims (7)
1.pH value safety automation setting device, comprise electric generator inner cooling water circulation system, it is characterized in that: also comprise online specific conductivity table, controlling box, volume pump, molten medicine-chest, liquid level switch, described online specific conductivity table is in order to detect and to show the conductivity value of the inner cold water in described electric generator inner cooling water circulation system, in described molten medicine-chest, certain density basic solution is housed, squeeze into electric generator inner cooling water circulation system by volume pump and tubing, the startup of described volume pump or stop being subject to by controlling box the signal control of online specific conductivity table, described liquid level switch is for responding to the liquid level of molten medicine-chest, described volume pump start or stop the control that is also simultaneously subject to described Level Detection signal.
2. pH value safety automation setting device according to claim 1, it is characterized in that: described online specific conductivity table comprises online specific conductivity Table A and online specific conductivity table B, described online specific conductivity Table A is in order to detect and to show the conductivity value of a measuring point of the inner cold water in described electric generator inner cooling water circulation system, and described online specific conductivity table B is in order to detect and to show the conductivity value of another measuring point of the inner cold water in described electric generator inner cooling water circulation system.
3. pH value safety automation setting device according to claim 2, it is characterized in that: described online specific conductivity Table A is provided with low conductivity alarming value and high conductivity alarming value, and sent to controlling box by surveyed conductivity value triggering low conductivity guard signal or high conductivity guard signal, determine the startup of volume pump or stop according to signal source by controlling box.
4. pH value safety automation setting device according to claim 2, it is characterized in that: described online specific conductivity table B is provided with high conductivity alarming value, and trigger high conductivity guard signal by surveyed conductivity value and send to controlling box, determine the startup of volume pump or stop according to signal source by controlling box.
5. according to the pH value safety automation setting device described in claim 1 or 2 or 3 or 4, it is characterized in that: described liquid level switch is installed on molten medicine-chest inside, for respond to liquid level in molten medicine-chest on it or under.
6. according to the pH value safety automation setting device described in claim 1 or 2 or 3 or 4, it is characterized in that: described volume pump is corrosion resistant diaphragm type low discharge metering pump.
7. according to the pH value safety automation setting device described in claim 1 or 2 or 3 or 4, it is characterized in that: described molten medicine-chest is used for loading certain density NaOH solution, it can be PE material, can be also material more than stainless steel 304.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322646.7U CN203890111U (en) | 2014-06-17 | 2014-06-17 | Safe and automatic PH value regulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322646.7U CN203890111U (en) | 2014-06-17 | 2014-06-17 | Safe and automatic PH value regulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203890111U true CN203890111U (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420322646.7U Active CN203890111U (en) | 2014-06-17 | 2014-06-17 | Safe and automatic PH value regulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203890111U (en) |
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2014
- 2014-06-17 CN CN201420322646.7U patent/CN203890111U/en active Active
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