CN203295282U - Anticorrosion device for internal cooling water system of generator - Google Patents
Anticorrosion device for internal cooling water system of generator Download PDFInfo
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- CN203295282U CN203295282U CN2013201278890U CN201320127889U CN203295282U CN 203295282 U CN203295282 U CN 203295282U CN 2013201278890 U CN2013201278890 U CN 2013201278890U CN 201320127889 U CN201320127889 U CN 201320127889U CN 203295282 U CN203295282 U CN 203295282U
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Abstract
The utility model provides an anticorrosion device for an internal cooling water system of a generator. The device comprises an oxygen-removing system and a novel hybrid processor, wherein the oxygen-removing system comprises an H2 rotor flow meter, a middle mixing water tank, a water rotor flow meter, an oxygen-removing device and a dissolved oxygen analyzer; the novel hybrid processor is internally provided with Na type, H type and OH type ion exchange resins. An internal cooling water pump and the H2 rotor flow meter are connected in parallel and are connected with the middle mixing water tank, a middle water pump, the water rotor flow meter, a deaerator and the novel hybrid processor in series. With the adoption of the anticorrosion device provided by the utility model, the water quality of processed internal cooling water of the generator is improved obviously to prevent corrosion caused by the fact that the water quality of the internal cooling water system is not qualified, so that the aim of preventing the internal cooling water system of the generator from being corroded is realized.
Description
Technical field
The utility model relates to a kind of corrosion-resisting device of electric generator inner cooling water system, particularly a kind of corrosion-resisting device of electric generator inner cooling water system hollow copper conductor.
Background technology
At present, domestic overcritical, ultra supercritical set generator all adopts Water hydrogen formula cooling system, and stator adopts water-cooled, and rotor and iron core adopt hydrogen_cooling.Because inner cold water water quality is defective, cause in recent years hollow copper conductor corrosion and scaling, blockage problem to happen occasionally.The hollow copper conductor is corroded and will produces extremely serious consequence, the lighter reduces the rising of water coolant specific conductivity, leakage current increase, electrical insulation properties, thermal conduction is obstructed, cause the generator coil temperature rise to increase, even corrosion product stops up the hollow copper conductor and causes coil overheated, increase falls in hydraulic pressure, affects generator output; Severe one will make generator be forced to shutdown inspection, burn generator.Therefore, slow down and prevent that the corrosion of electric generator inner cooling water copper conductor from being the important means that guarantees the generator safe operation.
The anti-corrosion measure of both at home and abroad the hollow copper conductor being taked at present roughly is divided into four classes: prevent that 1. oxygen and carbon dioxide from entering the inner cold water system; 2. adopt open water running or bypass ion-exchange (little mixed bed) method of changing; 3. adding basifier processes; 4. adding inhibiter processes.Although these four kinds for the treatment of processs once obtained some effects, also exposed many problems.As the external airtight isolated water cooling system of generator that generally adopts, in order to alleviate the corrosion of copper conductor, the dissolved oxygen in water coolant is reduced to below 100 μ g/L, this method can the assembling of increase system and the burden of running maintenance; More domestic power plant adopt continuous blow-down, by changing in a large number water ammonification simultaneously, adjust the method for pH, although copper content is decreased, effect is also not bery desirable, and continuous blow-down has obviously increased supplementary feed; In water coolant, add inhibiter MBT, although preservative effect is better, but because MBT itself is water insoluble, need add alkali dissolution, but easily increase the water coolant specific conductivity after adding alkali, when the pH value is slightly low, MBT can separate out and be attached on the copper conductor inwall, become the fluffy settling of a kind of yellow, under this state, move for a long time, also can stop up copper conductor.
Therefore seek the etching problem that a kind of more economic, easy, safe and reliable method solves the inner cold water system and be still a problem demanding prompt solution.
The utility model content
The purpose of this utility model is to overcome the deficiency that prior art exists, a kind of corrosion-resisting device of electric generator inner cooling water system is provided, this device not only can be removed the dissolving oxygen and carbon dioxide in electric generator inner cooling water, and pH value and the specific conductivity that can regulate inner cold water, make it to reach acceptability limit, reach the purpose that prevents the corrosion of electric generator inner cooling water system.This device also has that equipment is simple, the expense maintenance is little, empty calory consumption, residual oxygen are low, can not increase the salt advantage of grading.
For realizing above purpose, the utility model has been taked following technical scheme: a kind of corrosion-resisting device of electric generator inner cooling water system comprises deaerating type of cycles and novel mixed bed treater, and deaerating type of cycles comprises H
2Spinner-type flowmeter, middle mixing tank, water spinner-type flowmeter, deoxygenator and dissolved oxygen analyser, have Na type, H type and OH type ion exchange resin in novel mixed bed treater, it is characterized in that inner cold water pump and H
2After the spinner-type flowmeter parallel connection, with middle mixing tank, middle water pump, water spinner-type flowmeter, deoxygenator, novel hybrid processor, connect again.
The inner cold water system corrosion-resisting device that adopts the utility model to provide, can make inner cold water water quality keep qualified stable, prevents the corrosion that the inner cold water system causes because water quality is defective.Compared with prior art, adopt the present invention to have following unique advantage:
1. can realize at normal temperatures deoxygenation, and the deoxygenation speed of response is fast, oxygen removal efficiency is high, has reduced the possibility of hollow copper conductor and the reaction of oxygen corrosion.
2. do not need to add any medicament and can make inner cold water be in for a long time slight alkalinity, make the copper part of inner cold water system be in for a long time the self-passivation state, reduce the corrosion of inner cold water system.
3. in the oxygen and carbonic acid gas in removing inner cold water, can also remove other foreign ions, make dissolved oxygen, pH value, specific conductivity, the Cu of inner cold water
2+Deng simultaneously up to standard, reduced the risk that the inner cold water system stands to corrode.
4. the utility model is simple to operate, can realize operate continuously, and can not produce by product, does not also need to increase the equipment of electric generator inner cooling water system simultaneously, makes system more economical, stable, simple, reliable.
The accompanying drawing explanation
Accompanying drawing is a kind of corrosion-resisting device system schematic of electric generator inner cooling water system.
Embodiment
Below in conjunction with the drawings and specific embodiments, utility model is described further.
Referring to accompanying drawing, the utility model provides a kind of corrosion-resisting device of electric generator inner cooling water system, and this device comprises deaerating type of cycles and novel hybrid processor, and concrete device comprises H
2Spinner-type flowmeter, middle mixing tank, water spinner-type flowmeter, deoxygenator and dissolved oxygen analyser, resin catcher, novel hybrid processor and conductivitimeter, pH meter.The inner cold water of coming through the inner cold water pump delivery with through H
2The rotor flow fully dissolves mixing at middle mixing tank, by middle water pump, through the inner cold water spinner-type flowmeter, is entering deoxygenator, and the inner cold water after last deoxygenation enters novel hybrid processor after resin catcher.Wherein, in novel hybrid processor outlet, be equipped with conductivitimeter and pH meter, the deoxygenator outlet is provided with the dissolved oxygen analyser.
The upper space of middle mixing tank is hydrogen, makes inner cold water contain certain dissolved hydrogen.In deoxygenator, with heterogeneous solid catalyst, make contact medium, make oxygen in water be reduced to H
2O, can control in acceptability limit through the mass concentration of dissolved oxygen in the inner cold water of deoxygenator, effectively controls the corrosion of copper conductor.Heterogeneous solid catalyst in deoxygenator is usingd gac as carrier, in energy absorbed portion impurity, heterogeneous solid catalyst is evenly distributed in deoxygenator.
Novel hybrid processor comprises Na type, H type and OH type ion exchange resin, under the synergy of these three kinds of resins, can significantly improve the pH value of electric generator inner cooling water.Wherein said Na type and H type ion exchange resin can be respectively with electric generator inner cooling water in positively charged ion generation permutoid reaction, reduce the foreign ion, particularly corrodibility Cu of inner cold water
2+, described OH type ion exchange resin can with electric generator inner cooling water in negatively charged ion generation ion exchange reaction, particularly HCO
3 -The product of above-mentioned ionic reaction further reacts, finally discharge the NaOH of trace, avoided in electric generator inner cooling water owing to existing carbonic acid gas to cause inner cold water pH value to lower, reduced simultaneously foreign matter content, guarantee the low conductivity requirement of inner cold water system, alleviated the corrosion of electric generator inner cooling water system.
Claims (1)
1. the corrosion-resisting device of an electric generator inner cooling water system is comprised of deaerating type of cycles and novel hybrid processor, and deaerating type of cycles comprises H
2Spinner-type flowmeter, middle mixing tank, water spinner-type flowmeter, deoxygenator and dissolved oxygen analyser, have Na type, H type and OH type ion exchange resin in novel hybrid processor, it is characterized in that inner cold water pump and H
2After the spinner-type flowmeter parallel connection, with middle mixing tank, middle water pump, water spinner-type flowmeter, deoxygenator, novel hybrid processor, connect again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201278890U CN203295282U (en) | 2013-03-20 | 2013-03-20 | Anticorrosion device for internal cooling water system of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201278890U CN203295282U (en) | 2013-03-20 | 2013-03-20 | Anticorrosion device for internal cooling water system of generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203295282U true CN203295282U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201278890U Expired - Fee Related CN203295282U (en) | 2013-03-20 | 2013-03-20 | Anticorrosion device for internal cooling water system of generator |
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| CN (1) | CN203295282U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925992A (en) * | 2015-06-11 | 2015-09-23 | 长沙理工大学 | Anti-corrosion method for inner cooling water system of engine |
-
2013
- 2013-03-20 CN CN2013201278890U patent/CN203295282U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925992A (en) * | 2015-06-11 | 2015-09-23 | 长沙理工大学 | Anti-corrosion method for inner cooling water system of engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20140320 |