CN101335477B - Internal cold water supplying system for electricity generator cold water system - Google Patents
Internal cold water supplying system for electricity generator cold water system Download PDFInfo
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- CN101335477B CN101335477B CN2007100577659A CN200710057765A CN101335477B CN 101335477 B CN101335477 B CN 101335477B CN 2007100577659 A CN2007100577659 A CN 2007100577659A CN 200710057765 A CN200710057765 A CN 200710057765A CN 101335477 B CN101335477 B CN 101335477B
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Abstract
The invention discloses an inner cooling water supplement system of a cooling water system of a generator. The inner cooling water supplement system of the invention comprises a unit demineralized water supplement system comprising a unit demineralizing device and demineralized water supplement pipelines after the addition of ammonia; the unit demineralizing device is communicated with an axial heater which is then communicated with a stator water tank through the pipelines, and the invention is characterized in that a water supplement point which is used for adjusting the conductivity value is added on a pipeline in front of the unit demineralizing device and the axial heater and a filter is installed on a pipeline by which the axial heater is communicated with the stator water tank. The inner cooling water supplement system of the invention can prevent iron oxides in condensate from depositing in the inner cooling water system, adjust the pH value of the demineralized water, avoid the risk of the generator burning caused by the reduction of the flow area due to the corrosion of a generator coil bar and also effectively prevent resin of the unit demineralizing device from leaking into a stator water system of the generator, thereby improving the stability, safety and reliability in the operation of the generator due to the improved water quality.
Description
Technical field:
The invention belongs to a kind of water supplement apparatus, the inner cold water water charging system of particularly a kind of generator cooling-water system.
Background technology:
The moisturizing of generator cooling-water system is divided into 3 the tunnel, and the first via is this unit condensate, in set steady operation, preferential this road moisturizing of employing when condenser does not leak; The second the tunnel is adjacent machine condensate; The Third Road moisturizing is demineralized water or little mixed bed bypass operation.
Shortcoming when adopting the condensate moisturizing: because the oxygenation operation is adopted in boiler feedwater, along with the prolongation of running time, ferric oxide particles becomes many in the condensate, and iron-holder has the trend of growth.Directly mend condensate in this case, through after the intensification of generator stator bar, the partial oxidation iron particle in the water deposits, and causes the stator bar flow area to reduce when serious, this road moisturizing and nonideal water supplementing method.
When condenser leaks suddenly, cause the exceed standard risk of water quality deterioration of inner cooling water quality, influence unit safety stable operation.
Adopt the mode of mending demineralized water.Because demineralized water is not taked the deoxygenation measure, the dissolved oxygen concentration of mending entry is at 6000～8000 μ g/L, PH is 6～7, copper content＞40 μ g/L, and DL/T801-2002 requires the dissolved oxygen concentration of inner cold water should be less than 30 μ g/L, and demineralized water pH＞7, copper content＜40 μ g/L, the copper content overproof of electric generator inner cooling water after adopting demineralized water as the water source, obviously this road moisturizing does not meet water quality requirement.
The little mixed bed bypass operation of generator unit stator cooling water system, the copper content of stator cooling water meets the requirements, but the former absorbing copper ion that content of copper ion is low because of exchange column sun resin, the corrosion of having sheltered generator line rod. have only and in case of emergency just adopt this road moisturizing.
Summary of the invention:
Purpose of the present invention just is to overcome above-mentioned the deficiencies in the prior art, and provide the inner cold water water charging system of a kind of generator cooling-water system, the oxide that this system can prevent iron in the condensate causes risk that flow area reduces to cause generator to burn, can prevent effectively that stop element demineralizer resin leakage enters the stator water system of generator because of corrosion at the pH value of inner cold water system deposition, scalable demineralized water, generator line rod, thereby makes improved water quality improve generator operation stability and security reliability.
Technical scheme of the present invention is: the inner cold water water charging system of a kind of generator cooling-water system, comprise unit unit demineralized water water charging system, this unit unit demineralized water water charging system by unit unit demineralizer and ammonification after the demineralized water water pipe form, the unit demineralizer communicates with the axle heater, the axle heater communicates with the stator water tank by pipeline, it is characterized in that: increased a moisturizing point that is used to regulate conductivity value on unit unit demineralizer and the pipeline of axle between the heater, and on axle heater and pipeline that the stator water tank communicates, filter has been installed.
The present invention can also adopt following technical measures:
Above-mentioned filter is 120 purpose stainless steel wire web filters.
Each one of the stainless break valve supporting with it is installed in the front and back of above-mentioned filter.
Advantage of the present invention is: 1, electric generator inner cooling water moisturizing point is taken from the pipeline after the unit unit demineralizer outlet ammonification, and on axle heater and pipeline that the stator water tank communicates filter is installed, the change of this stator cooling water mode has reduced the danger, the generator line rod that leak resin widely and has reduced the risk that causes generator to burn because of corrosion causes flow area.This operational mode has guaranteed fail safe, the stability of generator line rod operation, has avoided can reducing 1,000,000 yuan of economic losses because of inner cold water water quality causes the compressor emergency shutdown accident.
2, electric generator inner cooling water moisturizing point is taken from the pipeline after the unit unit demineralizer outlet ammonification, inner cold water after the moisturizing meets makes its dissolved oxygen concentration should be less than 30 μ g/L, PH＞8, copper content＜15 μ g/L, PH is 8.0～8.7, this PH is in the passivation region of copper concerning generator line rod, the oxidation-reduction potential of water is below liberation of hydrogen line @ at this moment, show that water is to be in reducing condition, the copper tendency exists with the form of metallic copper, promptly is in the state that is not easy to corrode.Meet DL/T 801-2002 " quality of cooling water and systems technology require in the high-rating generator ".
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Embodiment:
As shown in the figure: the inner cold water water charging system of a kind of generator cooling-water system, comprise unit unit demineralized water water charging system, this unit unit demineralized water water charging system is made up of unit unit demineralizer and demineralized water water pipe 1, gets on the pipeline after unit unit demineralizer exports ammonification a bit to the stator water tank.For preventing that the inner cold water conductivity from exceeding standard, on the pipeline behind the ammonification point 2, get moisturizing point 3 and regulate the DD value.Enter the stator water system of generator for anti-stop element demineralizer resin leakage, consider that present stator water system Inner filter net filtering accuracy is 240 orders, though can satisfy stator water system filtration needs, but in order to guarantee the safe and stable operation of stator water system, and can not cause any threat to generator line rod, lead to installation 120 purpose stainless steel wire web filters 4 on the pipeline of stator water tank at the axle heater, and respectively one of the stainless break valve supporting with it 5 is installed in the front and back of filter, be used to stop broken particulate resin and various granular impurity.
The moisturizing of my #2 generator cooling-water on the 26th system in the #2 of company unit September changes the moisturizing after the precision processing ammonification into, and the inner cold water water quality after moisturizing point is changed has been carried out the chemical examination supervision, and inner cold water water quality is carried out statistical analysis relatively.
The water quality of inner cold water statistics before the #2 unit does not change: copper content mean value 3.7 μ g/L, iron content mean value are 5.3 μ g/L, and inner cold water DD is 0.625～0.960 μ S/cm, and PH is 8.11～8.45.
After #2 unit inner cold water moisturizing point changes, statistics (10.11.～11.15 day) copper content mean value is reduced to 1.83 μ g/L by 3.7 after the water stabilization, iron content mean value is reduced to 3.44 μ g/L by 5.3 μ g/L, inner cold water DD is 0.734～0.972 μ S/cm, PH is 8.12～8.46, and the index after the change meets " quality of cooling water and systems technology require in the high-rating generator " DL/T 801-2002.
Claims (3)
1. the inner cold water water charging system of a generator cooling-water system, comprise unit unit demineralized water water charging system, this unit unit demineralized water water charging system by unit unit demineralizer and ammonification after the demineralized water water pipe form, the unit demineralizer communicates with the axle heater, the axle heater communicates with the stator water tank by pipeline, it is characterized in that: increased a moisturizing point that is used to regulate conductivity value on unit unit demineralizer and the pipeline of axle between the heater, and on axle heater and pipeline that the stator water tank communicates, filter has been installed.
2. the inner cold water water charging system of generator cooling-water according to claim 1 system, it is characterized in that: above-mentioned filter is 120 purpose stainless steel wire web filters.
3. according to the inner cold water water charging system of the described generator cooling-water of claim 1 system, it is characterized in that: each one of the stainless break valve supporting with it is installed in the front and back of above-mentioned filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100577659A CN101335477B (en) | 2007-06-27 | 2007-06-27 | Internal cold water supplying system for electricity generator cold water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100577659A CN101335477B (en) | 2007-06-27 | 2007-06-27 | Internal cold water supplying system for electricity generator cold water system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101335477A CN101335477A (en) | 2008-12-31 |
| CN101335477B true CN101335477B (en) | 2011-03-30 |
Family
ID=40197850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100577659A Expired - Fee Related CN101335477B (en) | 2007-06-27 | 2007-06-27 | Internal cold water supplying system for electricity generator cold water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101335477B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790508A (en) * | 2016-03-17 | 2016-07-20 | 金田集团（桐城）塑业有限公司 | Motor cooling apparatus applied to BOPP production line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2203971Y (en) * | 1994-11-16 | 1995-07-26 | 王保国 | Automatic jetting device for adding ammonia |
| CN1292165A (en) * | 1998-01-26 | 2001-04-18 | 西门子公司 | Cooling system and method for cooling generator |
| CN1354546A (en) * | 2001-12-17 | 2002-06-19 | 武汉大学 | Inner-cooling water microcirculation slowly-releasing regulation and control method and its monitoring system |
-
2007
- 2007-06-27 CN CN2007100577659A patent/CN101335477B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2203971Y (en) * | 1994-11-16 | 1995-07-26 | 王保国 | Automatic jetting device for adding ammonia |
| CN1292165A (en) * | 1998-01-26 | 2001-04-18 | 西门子公司 | Cooling system and method for cooling generator |
| CN1354546A (en) * | 2001-12-17 | 2002-06-19 | 武汉大学 | Inner-cooling water microcirculation slowly-releasing regulation and control method and its monitoring system |
Non-Patent Citations (1)
| Title |
|---|
| JP昭60-204241A 1985.10.15 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790508A (en) * | 2016-03-17 | 2016-07-20 | 金田集团（桐城）塑业有限公司 | Motor cooling apparatus applied to BOPP production line |
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| Publication number | Publication date |
|---|---|
| CN101335477A (en) | 2008-12-31 |
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