CN103277149A - Treatment method of exceeding oxygen dissolution of condensation water of supercritical generator set - Google Patents
Treatment method of exceeding oxygen dissolution of condensation water of supercritical generator set Download PDFInfo
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- CN103277149A CN103277149A CN2013102249550A CN201310224955A CN103277149A CN 103277149 A CN103277149 A CN 103277149A CN 2013102249550 A CN2013102249550 A CN 2013102249550A CN 201310224955 A CN201310224955 A CN 201310224955A CN 103277149 A CN103277149 A CN 103277149A
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Abstract
The invention provides a treatment method of exceeding oxygen dissolution of condensation water of a supercritical generator set. The treatment method includes additionally arranging a steam flow channel inside a steam turbine steam exhaust combination unit and inletting partial steam exhausted from a low-pressure cylinder to heat condensation water; arranging a vacuum extraction pipeline inside the steam turbine steam exhaust combination unit and extracting separated oxygen and non-condensation gas out; and improving the vacuum tightness of the steam turbine steam exhaust combination unit. According to the treatment method of the exceeding oxygen dissolution of the condensation water of the supercritical generator set, the oxygen dissolution of the condensation water at an outlet of a condensation water pump can be controlled within a range of 30-40 mu gram per liter, so that the service life of every auxiliary unit can be effectively guaranteed, the heat efficiency of a heat return system of the generator set can be improved, the auxiliary power consumption can be reduced and the economy of the generator set can be improved.
Description
Technical field
The present invention relates to the electrical production industry, refer to the improvement method that a kind of supercritical generating unit water of condensation appearance oxygen exceeds standard especially.
Background technique
The turbine discharge combined unit of power plant, this bottom of device arrange the water of condensation hot well that volume reaches 200 cubic metres, install nozzle in the hot well additional, and its deoxygenation form is complete built-in deoxygenation.The certain space of steam exhaust device inside is split, make and independently seal chamber; Water of condensation moisturizing and the water of condensation of returning from air cooling condenser in the inner ejection of steam discharge combined unit, sprays very thin moisture film by the small-bore high pressure nozzle of import, are ejected 70% of its oxygen content of back disengaging.But because the hot well temperature generally maintains about 50 ℃, and rely on the high-pressure atomization ejection to separate out the mode of dissolved oxygen fully, by on-the-spot actual motion monitoring, can only reach about 15%～25%, and the coagulation hydroenergy backwater dissolved oxygen normally reaches more than the 200 μ g/L, and water of condensation moisturizing dissolved oxygen is more about 8000 μ g/L, so finally cause oxygen-eliminating device entrance water of condensation dissolved oxygen amount to reach 500 μ g/L, thermodynamic system water of condensation dissolved oxygen severe overweight causes serious threat to thermodynamic system equipment and pipe safety operation.
The water of condensation dissolved oxygen refers to thermodynamic system of steam tur, the size of dissolved oxygen content in the water of condensation.Turbo-generator Set water of condensation dissolved oxygen problem, the equipment that relates to, system's bulky complex have a far reaching influence, and to emphasizing low power consuming, dynamical modernized power plant high parameter, big capacity unit, extremely important meaning are arranged.Water of condensation dissolved oxygen problem, relate to subjects such as engineering heat transfer, industrial chemistry, physics of metals from aspects such as harm, influence, oxygen removal efficiency, be subjected to the great attention of R﹠D institution, electricity power enterprise, device fabrication side for a long time always as emphasis, difficult point problem.
The harm that dissolved oxygen exceeds standard is as follows: cause the oxygen corrosion of condensing water conduit and low-pressure heater, shorten the working life of equipment, reduce the operational reliability of unit.In order to improve the cycle efficiency of unit, adopted the backheat circulation, when the higher water of condensation of oxygen content is passed through backheat equipment and subsidiary pipeline thereof, can cause corrosion because oxygen and metal can form galvanic cell to these equipment, make metal produce electrochemical corrosion, is affected the working life of each supplementary equipment, reduced the reliability of unit operation.
Corrosion products is attached to heat exchanger surface, and the oxygen that dissolves in the water of condensation also can form gas membrane at heat exchanger surface, and making the heat exchanger thermal resistance increase the machine assembly air-exhausting amount increases, and reduces the heat regenerative system thermal efficiency.In the heat regenerative system of steam turbine, employing be surface heat exchanger, the corrosion products of equipment is attached on the heat exchanger surface, form loose adhesive layer, simultaneously, the water oxygen level that condenses is too much, can make and form thin film on the heat exchanger surface, the heat exchange thermal resistance is increased, reduce the thermal efficiency of circulation.
The too much air coagulator that bleeds can reduce the unit vacuum, influences unit economy.In order to guarantee the operation of stabilizing the economy of unit, vapour condenser must be in the vacuum state of height.The too much air vapour condenser that bleeds can cause vacuum to reduce, and can influence the Economy of unit on the one hand, will reduce exerting oneself of unit when serious; On the other hand, also make the load of bleeding of extract system increase, increased the station-service electric weight.
The reason that causes dissolved oxygen to exceed standard: vacuum tightness is poor (should to remain on the pressure drop scope of 200Pa/min according to the vacuum tightness of NBS unit, then be 100Pa/min according to power plant's standard), vacuum tightness refers to increasing the isentropic enthalpy drop of steam in steam turbine, improve unit economy, namely form the relevant system of high vacuum with the exhaust steam pressure that reduces steam turbine, the leakage rate of its ambient air is called vacuum system strictness; Be connected with steam exhaust device, particularly air cooling system volume and area are huge, pipe joint and valve are many, and the probability that blank point occurs is big, and are difficult for finding by the conventional sense method for little blank point, at the operation initial stage, two unit vacuum tightness of our factory are below standard always.
Condensate undercooling big (general Air-cooled Unit Subcoold temperature is 5-6 ℃) and pumped vacuum systems vacuumize link in part and undesired operating mode occurs, influence the operation of pumped vacuum systems.
The condensate system moisturizing is demineralized water, only carried out chemical treatment, there is not deep deoxygenization, moisturizing is adopted the deoxygenation of spray mode by the water of condensation deaerating plant, and the dissolved oxygen under the demineralized water normal temperature and pressure is generally about 8000 μ g/L, be hundreds of times of water of condensation, so the moisturizing deoxygenation of water of condensation seems particularly important.
Molten in the invention
The technical problem to be solved in the present invention provides a kind of supercritical generating unit water of condensation and holds the improvement method that oxygen exceeds standard, and to solve the problem that the water of condensation dissolved oxygen exceeds standard, guarantees device security production.
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of supercritical generating unit water of condensation to hold the improvement method that oxygen exceeds standard, and comprising:
(1) in the turbine discharge combined unit, adds the heating steam circulation passage, introduce part low pressure (LP) cylinder steam discharge water of condensation is heated;
(2) in the turbine discharge combined unit, vacuum lead is set, oxygen and the incondensable gas of separating out are extracted out;
(3) improve turbine discharge combined unit vacuum tightness.
Wherein, described heating steam circulation passage is installed in the tapping in the turbine discharge combined unit.
Wherein, described position of opening is basic point with main condensate nozzle and water of condensation moisturizing deaerating plant, becomes the vertical position with arc deflector, and described bore size is 500 * 600mm, and parallel position is provided with the perforate of 3 places.
Wherein, described vacuum lead one end is connected with the female pipe of big machine vacuum pump inlet, and described jointing is provided with restricting orifice.
Wherein, the method for described raising turbine discharge combined unit vacuum tightness comprises:
The normal maintenance vacuum pump cooler cock standard-sized sheet in service of unit;
In 50～60kPa scope, adjust the pressure of low pressure (LP) cylinder antero posterior axis envelope, adjust axle envelope sealing effect;
Reduce unit dewatering capacity-enlarging actuator temperature;
In 30～50Hz scope, adjust air cooling island fan operation rotating speed;
Regulate air cooling tube bank high-pressure spraying, increase the heat exchange effect;
When unit normally moved, the aperture that axle adds hydrophobic U water seal outlet portal kept fixing in 0～1 scope, and axle adds water level and keep fixing in the 25-30 cm range, and water of condensation water-filling door keeps often opening.
Wherein, the preferred 55kPa of pressure of described low pressure (LP) cylinder antero posterior axis envelope.
Wherein, described unit dewatering capacity-enlarging actuator temperature is no more than 65 degree.
Wherein, the preferred 40Hz of described air cooling island fan operation rotating speed.
Wherein, it is preferred 1/3rd that described axle adds the aperture of hydrophobic U water seal outlet portal, and described axle adds preferred 27 centimetres of water level.
The beneficial effect of technique scheme of the present invention is as follows:
Said method, make condensate pump outlet water of condensation dissolved oxygen basic controlling in 30-40 μ g/L scope, thereby effectively guaranteed working life of each supplementary equipment, improved the unit heat regenerative system thermal efficiency, reduced station service, improved the Economy of unit.
Embodiment
For making the technical problem to be solved in the present invention, technological scheme and advantage clearer, will be described in detail at specific embodiment below.
Should be clear and definite, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiments that obtain under the creative work prerequisite.
The embodiment of the invention provides a kind of supercritical generating unit water of condensation to hold the improvement method that oxygen exceeds standard, and comprising:
(1) in the turbine discharge combined unit, adds the heating steam circulation passage, introduce part low pressure (LP) cylinder steam discharge water of condensation is heated;
Turbine discharge combined unit bottom arranges the water of condensation hot well that volume reaches 200 cubic metres, installs applicating nozzle in the hot well additional, and its deoxygenation form is complete built-in deoxygenation.The certain space of steam exhaust device inside is split, make and independently seal chamber; Water of condensation moisturizing deoxygenation box is airtight, and all plates are tightly welding all; Manhole door installs additional behind the pad fastening tight.Corrugated sheet will be avoided full weld in the box, and guarantees inclination on request.The installation of bubbling cap also will be in strict accordance with designing requirement, to guarantee the bubbling deaerating effect.Water of condensation moisturizing and the water of condensation of returning from air cooling condenser in the inner ejection of steam discharge combined unit, sprays very thin moisture film by the small-bore high pressure nozzle of import, are ejected 70% of its oxygen content of back disengaging.
In the turbine discharge combined unit perforate is set, the heating steam circulation passage is connected tapping.Water of condensation is by the atomizing of nozzle, just carry out preliminary deoxygenation, steam is to the degree of heat of water of condensation, it is the essential condition of further deep deoxygenization, so, decisive role is played to the import volume of low pressure (LP) cylinder steam discharge in steam exhaust device top guide plate bore size and position, test data according to the collection of our factory actual motion shows, under the prerequisite that does not influence low pressure (LP) cylinder steam discharge guide plate bulk strength structure, position of opening should be basic point with main condensate nozzle and water of condensation moisturizing deaerating plant, become the vertical position with arc deflector, and bore size is 500 * 600mm, parallel position is opened 3 places, to introducing amount and the hot well temperature rise of heating steam, hear rate and deaerating effect reach optimum value.
(2) in the turbine discharge combined unit, vacuum lead is set, oxygen and the incondensable gas of separating out are in time extracted out;
The incondensable gas that the vacuum lead that stretches out from main condensate nozzle and water replenishing device is separated out directly inserts the female pipe of big machine vacuum pump inlet by this pipe, with the incondensable gas extraction that produces.Vacuum lines is directly inserted the vacuum pump inlet pipe, simultaneously for preventing the direct suction of incondensable gas and water of condensation system, exert oneself and the pipeline situation is calculated according to vacuum pump actual, install restricting orifice additional.By moving actual proof, install this pipeline additional after, the water of condensation dissolved oxygen reduces obviously.
(3) improve turbine discharge combined unit vacuum tightness;
1), the normal maintenance vacuum pump cooler cock standard-sized sheet in service of unit, guarantee the gas-distributing cylinder optimal operating condition.
2), the low pressure (LP) cylinder antero posterior axis seals up for safekeeping and leaking, and adjusts the pressure of low pressure (LP) cylinder antero posterior axis envelope in 50～60kPa scope, adjusts after tested, unit is when axle envelope pressure is adjusted at 55KPa when normal operation, axle envelope sealing effect is best.
3), when unit dewatering capacity-enlarging actuator temperature surpasses 65 when spending, increased this part thermal loss on the one hand, the exhaust casing temperature is raise, influence the unit economic benefit; After the development unit running temperature surpassed 65 degree, every rising 1 degree of temperature made the unit coal consumption increase by 2 gram/kilowatt hours, in order to ensure hydrophobic door leakproofness, adjusts dewatering capacity-enlarging device running temperature and is no more than 65 degree.
4), air cooling island when operation, according to each row water of condensation header temperature, vacuumize temperature, actual measurement tube bank temperature comparison on the spot, adjust corresponding fan operation rotating speed, to reach optimum efficiency.Now be listed as and whenever show 20 air cooling island blower fans and just test laboratory data such as following table with regard to two:
When 20 row blower fans all out of service, all the other each row blower fan frequencies all be 50 hertz all out of service with 20 row blower fans, 20 all blower fan oil pump full cut-ofves of row, blower fan has a power failure.All the other each row blower fan frequencies all are under 50 hertz of these two kinds of methods of operation, and the blower fan power consumption does not change.
When all blower fans all move, wherein the concurrent draught fan frequency all is 40 hertz, and when adverse current blower fan frequency all was 45 hertz, power consumption was down to 1950 kilowatt hours by 2910 kilowatt hours, reduced by 960 kilowatt hours.
When all blower fans all move, wherein the concurrent draught fan frequency all is 40 hertz, and when adverse current blower fan frequency all was 40 hertz, power consumption was down to 1740 kilowatt hours by 2910 kilowatt hours, reduced by 1170 kilowatt hours.But because ambient temperature raises unit vacuum decline 9.7Kpa.
From test as can be seen, vacuum constant substantially situation under, with all blower fan reductions of speed than stopping little many of a few typhoon machines operation power consumptions.So air cooling island normal operation period keeps the frequency 40Hz of each blower fan in the same column, keep during low-load that each row blower fan is thrown more, low-frequency operation.
5), the summer environment temperature raises, air cooling island cooling effect obviously reduces, unit operation situation from experiment, air cooling blower fan overclocking operation in summer down, the high energy of unit load reaches the 85%-95%(ambient temperature and is not more than 30 ℃), for alleviating this problem, the high-pressure spraying adjusting is carried out in tube bank to air cooling, increase the heat exchange effect, experiment shows, spray can improve unit vacuum (when the same day, ambient temperature was the highest, back pressure is dropped to about 22 from 30KPa) after dropping into, and largely alleviates the problem of unit limited load.
Aperture is in 0～1 scope when 6), axle being added the operation of hydrophobic U water seal outlet portal, the while axle adds water level and remains on 25-30 centimetre, water of condensation water-filling door keeps often driving into the row experiment, aperture keeps 1/3rd when axle adds the operation of hydrophobic U water seal outlet portal, when axle adds water level and is fixed on 27 centimetres, the overhaul machine increases water seal height, thoroughly eliminates the leakage of this part.
Said method, make condensate pump outlet water of condensation dissolved oxygen basic controlling in 30-40 μ g/L scope, thereby effectively guaranteed working life of each supplementary equipment, improved the unit heat regenerative system thermal efficiency, reduced station service, improved the Economy of unit.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a supercritical generating unit water of condensation is held the improvement method that oxygen exceeds standard, and it is characterized in that, comprising:
(1) in the turbine discharge combined unit, adds the heating steam circulation passage, introduce part low pressure (LP) cylinder steam discharge water of condensation is heated;
(2) in the turbine discharge combined unit, vacuum lead is set, oxygen and the incondensable gas of separating out are extracted out;
(3) improve turbine discharge combined unit vacuum tightness.
2. supercritical generating unit water of condensation according to claim 1 is held the improvement method that oxygen exceeds standard, and it is characterized in that, described heating steam circulation passage is installed in the tapping in the turbine discharge combined unit.
3. supercritical generating unit water of condensation according to claim 2 is held the improvement method that oxygen exceeds standard, it is characterized in that, described position of opening is basic point with main condensate nozzle and water of condensation moisturizing deaerating plant, become the vertical position with arc deflector, described bore size is 500 * 600mm, and parallel position is provided with the perforate of 3 places.
4. supercritical generating unit water of condensation according to claim 1 is held the improvement method that oxygen exceeds standard, and it is characterized in that, described vacuum lead one end is connected with the female pipe of big machine vacuum pump inlet, and described jointing is provided with restricting orifice.
5. supercritical generating unit water of condensation according to claim 1 is held the improvement method that oxygen exceeds standard, and it is characterized in that the method for described raising turbine discharge combined unit vacuum tightness comprises:
The normal maintenance vacuum pump cooler cock standard-sized sheet in service of unit;
In 50～60kPa scope, adjust the pressure of low pressure (LP) cylinder antero posterior axis envelope, adjust axle envelope sealing effect;
Reduce unit dewatering capacity-enlarging actuator temperature;
In 30～50Hz scope, adjust air cooling island fan operation rotating speed;
Regulate air cooling tube bank high-pressure spraying, increase the heat exchange effect;
When unit normally moved, the aperture that axle adds hydrophobic U water seal outlet portal kept fixing in 0～1 scope, and axle adds water level and keep fixing in the 25-30 cm range, and water of condensation water-filling door keeps often opening.
6. supercritical generating unit water of condensation according to claim 5 is held the improvement method that oxygen exceeds standard, and it is characterized in that, the preferred 55kPa of pressure of described low pressure (LP) cylinder antero posterior axis envelope.
7. supercritical generating unit water of condensation according to claim 5 is held the improvement method that oxygen exceeds standard, and it is characterized in that, described unit dewatering capacity-enlarging actuator temperature is no more than 65 degree.
8. supercritical generating unit water of condensation according to claim 5 is held the improvement method that oxygen exceeds standard, and it is characterized in that the preferred 40Hz of described air cooling island fan operation rotating speed.
9. supercritical generating unit water of condensation according to claim 5 is held the improvement method that oxygen exceeds standard, and it is characterized in that, the aperture that described axle adds hydrophobic U water seal outlet portal is preferred 1/3rd, and described axle adds preferred 27 centimetres of water level.
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| CN2013102249550A CN103277149A (en) | 2013-06-06 | 2013-06-06 | Treatment method of exceeding oxygen dissolution of condensation water of supercritical generator set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255270A (en) * | 2017-06-29 | 2017-10-17 | 西安亨特电力科技有限公司 | A kind of exceeded administering method of thermal power generation unit condensate dissolved oxygen content |
| CN108534565A (en) * | 2018-03-27 | 2018-09-14 | 润电能源科学技术有限公司 | Method biological in condenser is killed using the operation control of Generation Unit Condenser |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005042640A (en) * | 2003-07-24 | 2005-02-17 | Hitachi Ltd | Condensate degasifing device and method for controlling the same |
| CN1752418A (en) * | 2005-11-08 | 2006-03-29 | 哈尔滨汽轮机厂有限责任公司 | Air cooled steam exhaustor with built-in oxygen remover |
| CN2779073Y (en) * | 2005-02-18 | 2006-05-10 | 中国电力工程顾问集团中南电力设计院 | Multifunctional air discharging device of direct air cooling steam turbine |
| CN2911191Y (en) * | 2006-06-07 | 2007-06-13 | 杨驭 | Integrated steam exhauster of air cooling turbine |
| CN2913617Y (en) * | 2006-07-07 | 2007-06-20 | 泰安市利德容器制造有限公司 | Steam-discharging vacuum deaerator for air cooling steam turbine |
| JP2008101494A (en) * | 2006-10-17 | 2008-05-01 | Hitachi Ltd | Low-pressure steam turbine system and control method |
-
2013
- 2013-06-06 CN CN2013102249550A patent/CN103277149A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005042640A (en) * | 2003-07-24 | 2005-02-17 | Hitachi Ltd | Condensate degasifing device and method for controlling the same |
| CN2779073Y (en) * | 2005-02-18 | 2006-05-10 | 中国电力工程顾问集团中南电力设计院 | Multifunctional air discharging device of direct air cooling steam turbine |
| CN1752418A (en) * | 2005-11-08 | 2006-03-29 | 哈尔滨汽轮机厂有限责任公司 | Air cooled steam exhaustor with built-in oxygen remover |
| CN2911191Y (en) * | 2006-06-07 | 2007-06-13 | 杨驭 | Integrated steam exhauster of air cooling turbine |
| CN2913617Y (en) * | 2006-07-07 | 2007-06-20 | 泰安市利德容器制造有限公司 | Steam-discharging vacuum deaerator for air cooling steam turbine |
| JP2008101494A (en) * | 2006-10-17 | 2008-05-01 | Hitachi Ltd | Low-pressure steam turbine system and control method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255270A (en) * | 2017-06-29 | 2017-10-17 | 西安亨特电力科技有限公司 | A kind of exceeded administering method of thermal power generation unit condensate dissolved oxygen content |
| CN108534565A (en) * | 2018-03-27 | 2018-09-14 | 润电能源科学技术有限公司 | Method biological in condenser is killed using the operation control of Generation Unit Condenser |
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Application publication date: 20130904 |