CN200941010Y - Anti-freezing non-coagulating gas extractor of self-heating air cooling condensator - Google Patents
Anti-freezing non-coagulating gas extractor of self-heating air cooling condensator Download PDFInfo
- Publication number
- CN200941010Y CN200941010Y CN 200520142667 CN200520142667U CN200941010Y CN 200941010 Y CN200941010 Y CN 200941010Y CN 200520142667 CN200520142667 CN 200520142667 CN 200520142667 U CN200520142667 U CN 200520142667U CN 200941010 Y CN200941010 Y CN 200941010Y
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- bleeding
- tube
- air cooling
- withdrawing device
- steam
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Abstract
In order to overcome the shortage of existing countercurrent heat exchange unit of the single-row pipe air cooling condenser and the withdraw device for the non-condensing gas on frost protection and affecting heat exchange efficiency of the whole heat exchanger, the utility model provides a proposal to cancel the basic heat exchange unit and provides a non-condensing gas withdraw device which can automatically heat the terminal of countercurrent pipe bundle which composes the non-condensing gas withdraw device and guarantee unfrozen of the pipe bundle. The countercurrent finned pipes, composing the non-condensing gas withdraw device, distribute as gas bleed pipe bundle in the concurrent pipe bundle of basic heat exchange units with the countercurrent finned pipes clipped between two concurrent condensing finned pipes. The equipment improved the reliability of the system and the heat exchange efficiency of the air cooling condenser due to simplification of the air cooling condenser system with cancellation of independent countercurrent unit and without any hot air inlet by time reversal of the countercurrent fan.
Description
Affiliated technical field
The utility model relates to the incondensable gas withdrawing device of a kind of power station steam turbine with direct air cooled condenser, especially relates to the reliable antifreeze on-condensible gas withdrawing device of a kind of energy.
Background technology
Will be provided with in direct air cooled condenser will be along with the on-condensible gas withdrawing device of can not noncondensing gas extracting out continuously that be entered condenser by the steam that condensed together.Unallowed again at low temperatures frosting of some parts that this device relates to and the danger of freezing.
At present, the mode of condensing of known power station steam turbine single row of tubes direct air cooled condenser and on-condensible gas withdrawing device use the invention of German GEA company and the method for the constant voltage two-part condensation process that has, condensing of steam is made of two condensing sections, the steam discharge that is steam turbine is earlier through following current condensation segment (steam and condensate water are equidirectional to flow), after through the reversed flow condensation section or claim anti-stream condensation segment (steam and condensate water are mobile) in the other direction.Therefore this design has guaranteed that condensate water constantly is heated in the reversed flow condensation section, reduced the potential freezing formation of mistake cold-peace of condensate water, has also got rid of dissolved oxygen extra in the condensate water simultaneously, has avoided the corrosion of pipe interior.Further antifreezing measures initiatively have condensate water from emptying and employing heavy in section pipeline etc.)
The following current condensation segment of the single row of tubes air cooling tubes condenser of GEA and Harmon company and reversed flow condensation section all be by following current (K) and adverse current (D) than being that 5: 1 to 9: 1 condensation areas concentrate in the corresponding basic heat exchange unit, promptly all heat-exchanging tube bundles all are adverse currents in several countercurrent flow unit.Like this, in current known air cooling tubes condenser, there is not reliable automaton to guarantee the heat exchange ratio that whole air cooling tubes condenser concurrent-countercurrent is interbank.Work as cold season, the following current tube bank is condensed more, and reverse stream pipe thereafter is intrafascicular to be condensed cold excessively, and whole generatine set heat efficiency is reduced, and moves behind the condensate water set point of living in, and dissolved oxygen increases.On the contrary, the following current tube bank is condensed less, and intrafascicular the condensing of reverse stream pipe thereafter can not be condensed fully, and carrying the few small amount of steam of heat has the possibility of being extracted out together with incondensable gas.In the fan unit, steam inside amount tube bank end seldom is under long-term low-temperature airflow heat convection even equal the cold air temperature, makes frosting gradually on the tube wall because the adverse current tube bank coexists, until freezing, tube bank is all stopped up, and the condenser heat exchange worsens comprehensively, and the condensate water dissolved oxygen increases.Therefore, the suction hot blast regularly reverse in GEA regulation severe winter adverse current unit.Even the thermal efficiency reduces, the danger of freezing again.This halfway antifreeze be prerequisite still to have sacrificed condenser and steam turbine overall system efficiency.
Steam load and air feed skewness between each basic heat exchange unit of current commercially available single row of tubes air cooling tubes condenser system, the integral device utilization rate is low, the identical device ability.The concurrent-countercurrent tube bank of the concurrent-countercurrent Pipe bundle structure that adopts is than big, and unsymmetrical load and air quantity distribute the residual steam of the following current part that causes all to be finished by the adverse current section.Overall system efficient is low.
If the steam distribution in basic heat exchange unit of single row of tubes direct air cooled condenser and the tube bank thereof is even, counterflow condenser has been degenerated to pure incondensable gas withdrawing device passage and has born in the condensation process condensate water and extract point out with rear section process and container in whole condenser system.And by concurrent-countercurrent tube bank ratio decision condensing water temperature and its dissolved oxygen content.If the terminal measure of not freezing conscientiously of the adverse current of making tube bank is arranged, just can cancel independent whole basic heat exchange units of adverse current of being arranged to the adverse current tube bank, make reliable antifreeze incondensable gas withdrawing device.
Summary of the invention
For the deficiency of incondensable gas withdrawing device on antifreeze and the whole heat exchanger heat exchange efficiency of influence that overcomes existing single row of tubes direct air cooled condenser countercurrent flow unit and form thereon, the utility model proposes the basic heat exchange unit of cancellation adverse current, and provide a kind of can be automatically to constituting the terminal heating of adverse current tube bank of incondensable gas withdrawing device, guarantee its not frozen incondensable gas withdrawing device.The adverse current tube bank that constitutes the incondensable gas withdrawing device is distributed in the middle of each basic heat exchange unit following current tube bank, can simplify the control system of single row of tubes direct air cooled condenser greatly.
The technical scheme that its technical problem that solves the utility model adopts is:
1) the basic heat exchange unit of cancellation adverse current, the position of the basic heat exchange unit of former adverse current replaces cancellation is constituted and be furnished with independent blower fan by whole adverse current tube banks the basic heat exchange unit of adverse current by the basic heat exchange unit of following current.
No matter former adverse current unit is made of adverse current tube bank all, still have no alternative but because of result of calculation and the contrary basic heat exchange unit of adverse current of what is called that adverse current tube bank and part following current tube bank and be in the same place (adverse current tube bank and following current tube bank are concentrated respectively) constitute all to restrain the unit alternative to have the following current restrained of bleeding.
2) press the quantity of the adverse current finned tube of calculation requirement, configuration is extracted out as incondensable gas and is used finned tube in the basic heat exchange unit tube bank of all following currents
Since to each air cooling tubes condenser system, the service condition difference, the scale of incondensable gas withdrawing device may be different, and the configuration that incondensable gas is extracted out with finned tube can have two kinds of schemes:
2.1) intrafascicular with the exhaust tube that finned tube is configured in special use the incondensable gas extraction
Each engineering product reaches designing requirement with identical extracting out with restraining (hereinafter to be referred as the tube bank of bleeding) basic module, disposing as incondensable gas.
2.2) incondensable gas extracted out to be configured in all following current condenser tubes with finned tube intrafascicular
Each engineering product is with the identical tube bank delivery unit that condenses, and great majority are the following current unit in each unit, simultaneously by the extraction of designing and calculating requirement configuration incondensable gas with finned tube (hereinafter to be referred as the uniform finned tube of bleeding).
3) bleed the tube bank and the uniform finned tube of bleeding
Direct air cooled condenser is to be made of some basic heat exchange units.Each basic heat exchange unit is by the tube bank that becomes the A font to arrange.Tube bank comprises that a lot of upper ends are connected in the finned tube that the steam-distributing pipe lower end that imports steam is connected in the condensate water lower collecting box of collecting condensate water.The steam flow direction is identical with the condensate water flow direction in such tube bank is called following current tube bank.
Tube bank is to be manufacturing and the definite welding assembling that some finned tubes are arranged of convenient transportation.
The tube bank of bleeding is that the interface of bleeding that each two finned tube in the following current tube bank are installed a special use to the steam distribution pipe end of a finned tube is formed.
The interface of bleeding is the finned tube outlet design attitude that is prefabricated in the factory and manually is welded on after tube bank is welded.Interface is that using with restraining end plate is that the cold-formed rectangular opening of same material is flat box-like, and the bottom is welded with the standard thread articulation base of same material.
In the basic heat exchange unit of each air cooling tubes condenser, all to arrange the tube bank of bleeding.According to the requirement of calculating, the tube bank number possibility rounding of bleeding in each basic heat exchange unit also may be the mixed decimal position to integer.Therefore for certain engineering, the tube bank of bleeding has two kinds, and a kind of is the complete tube bank of bleeding of an exhaust tube of two following current pipe clamps, and a kind of is that only some following current pipe is the imperfect tube bank of bleeding of an exhaust tube of two following current pipe clamps.In each basic heat exchange unit, need to be configured to the exhaust tube of quantity by these two kinds of tube banks.
When the bleed finned tube intrafascicular above-mentioned exhaust tube is arranged in all tube bank installation units uniformly, just form 2.2) joint in the said uniform finned tube of bleeding.
4) on-condensible gas is extracted female pipe out
The threaded for union base of all exhaust tubes all will be taken over by special use and be connected on noncondensing female pipe of bleeding.Noncondensing female Guan Shi that bleeds is arranged in the steam distribution header of steam-distributing pipe bottom one by one and is fixed on the metal tube of wooden partition, at the relative position that is furnished with tube bank exhaust tube or the uniform exhaust tube of bleeding, it has and the exhaust tube the same articulation base of institute's belt lacing on the interface of bleeding.
Noncondensing female pipe of bleeding must play end at steam-distributing pipe and pool together, and receives the female pipe of aspiration pump respectively.
5) exhaust tube is extracted being connected between female pipe out with on-condensible gas
It is that flexible pipe heat-resisting, corrosion-resistant by two double thread articulations and energy, fatigue proof material is realized that the finned tube of bleeding is extracted being connected between female pipe out with on-condensible gas.
6) the antifreeze incondensable gas withdrawing device of self-heating type air cooling tubes condenser
The above-mentioned extraction out by the tube bank of bleeding, the uniform finned tube of bleeding, noncondensing bleed female pipe and bleed finned tube and on-condensible gas connects and composes the antifreeze incondensable gas withdrawing device of self-heating type air cooling tubes condenser between female pipe.It is extracted the incondensable gas of formation air cooling tubes condensers such as female pipe and vavuum pump out and extracts system out with the on-condensible gas that gathers.
Originally the finned tube of bleeding of noncondensing withdrawing device is terminal and female Guan Jun that bleeds is among often the heating automatically of vapours, even can block a part of air channel that following current finned tube steam inlet is located, make by the fin liberated heat all to be used for heating the tube wall of bleeding.
The beneficial effects of the utility model are:
The antifreeze incondensable gas withdrawing device of self-heating type air cooling tubes condenser.Can guarantee that the easiest in the past adverse current tube bank end that freezes no longer freezes, and has improved the reliability of system; Because having cancelled independently, the adverse current unit is oversimplified the control of air cooling tubes condenser system; Without the adverse current blower fan suction hot blast that regularly reverses, improved the heat exchange efficiency of air cooling tubes condenser.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the basic structure form of the antifreeze incondensable gas withdrawing device of self-heating type air cooling tubes condenser of the present utility model.
1. steam-distributing pipes among the figure, 2. the mother that bleeds of on-condensible gas withdrawing device manages 3. articulation, 4. exhaust tube interface, 5. baffle plate, 6. bleed finned tube, 7. fin, 8. the not condensing vapour in the condensate water lower collecting box, the 9. condensate water in the condensate water lower collecting box, 10. following current finned tube.
The specific embodiment
Cancellation is constituted and is furnished with the basic heat exchange unit of adverse current of independent blower fan by whole adverse current tube banks.
No matter former adverse current unit is made of the adverse current tube bank all, still have no alternative but lump together the basic heat exchange unit of so-called adverse current that (adverse current tube bank and following current tube bank are concentrated respectively) constitutes because of result of calculation, all substitute with the following current tube bank unit that has the finned tube of bleeding (6) with adverse current tube bank and part following current tube bank.
Since to each air cooling tubes condenser system, the service condition difference, the scale of incondensable gas withdrawing device may be different, and the configuration that incondensable gas is extracted out with finned tube can have two kinds of schemes:
1) incondensable gas is bled to be configured in special-purpose exhaust tube intrafascicular for finned tube (6)
Each engineering product adopts identical incondensable gas to extract out with restraining (hereinafter to be referred as the tube bank of bleeding) as basic module, and configuration reaches designing requirement.
2) incondensable gas is bled to be configured in all following current condenser tubes intrafascicular for finned tube
Each engineering product adopts the identical tube bank delivery unit that condenses, and great majority are the following current unit in each unit, simultaneously by the designing and calculating requirement configuration incondensable gas finned tube (6) (hereinafter to be referred as the uniform tube bank of bleeding) of bleeding.
The tube bank of bleeding be with the finned tube of bleeding (6) at steam-distributing pipe (1) one end place, install that the exhaust tube interface (4) of a special use forms.
Exhaust tube interface (4) is one and is prefabricated in the factory and after tube bank welding, manually is welded on the finned tube of bleeding (6) outlet design attitude.Exhaust tube interface (4) adopts with the cold-formed rectangular opening of tube bank end plate same material flat box-like, and the bottom is welded with standard thread articulation (3) base of same material.
The tube bank of bleeding is furnished with two kinds, a kind of is the complete tube bank of bleeding of two following current finned tubes (10) finned tubes of bleeding of folder (6), and a kind of is that only some following current finned tube (10) is the imperfect tube bank of bleeding of two following current finned tubes (10) finned tubes of bleeding of folder (6).In each basic heat exchange unit, need to be configured to the exhaust tube of quantity by these two kinds of tube banks.
When the bleed finned tube (6) intrafascicular above-mentioned exhaust tube is arranged in all tube bank installation units uniformly, just form the uniform tube bank of bleeding.
Threaded for union (3) base of all finned tubes of bleeding (6) all will be taken on the female pipe (2) of bleeding that is connected to the on-condensible gas withdrawing device by special use.The female pipe (2) of bleeding of on-condensible gas withdrawing device is the metal tube that is arranged in the steam distribution header of steam-distributing pipe (1) bottom one by one and is fixed on wooden partition, being arranged in the bleed relative position of finned tube (6) of the tube bank of bleeding, it has and the finned tube of bleeding (6) the same articulation (3) base of institute's belt lacing on the interface of bleeding.
The female pipe (2) of bleeding of on-condensible gas withdrawing device pools together at the end that rises of steam-distributing pipe (1), receives the female pipe of aspiration pump respectively.
The finned tube (6) of bleeding is by two double thread articulations (3) with being connected between female pipe (2) of bleeding of on-condensible gas withdrawing device and can realizes by flexible pipe heat-resisting, corrosion-resistant, fatigue proof material.
The above-mentioned female pipe of extraction (2), articulation (3) and flexible pipe by the tube bank of bleeding, on-condensible gas withdrawing device constitutes the antifreeze incondensable gas withdrawing device of self-heating type air cooling tubes condenser.
The finned tube of bleeding (6) of this noncondensing withdrawing device female pipe (2) of bleeding terminal and the on-condensible gas withdrawing device all is among the heating of vapours, can also block a part of air channel at place, following current finned tube (10) steam inlet with baffle plate (5), make by the fin liberated heat to be used for heating finned tube (6) wall of bleeding.
Claims (6)
1. antifreeze incondensable gas withdrawing device of self-heating type air cooling tubes condenser, it is characterized in that the finned tube of bleeding of extracting passage as incondensable gas out is distributed in each basic heat exchange unit, be clipped between two following current finned tubes, female pipe of bleeding of on-condensible gas withdrawing device is arranged in the steam-distributing pipe header of steam-distributing pipe or its underpart, and the finned tube of bleeding of extracting on-condensible gas out is connected with the female pipe of bleeding of on-condensible gas discharger by exhaust tube interface, articulation, flexible pipe and another articulation.
2. according to the antifreeze incondensable gas withdrawing device of claim 1 described self-heating type air cooling tubes condenser, it is characterized in that: following current finned tube and adverse current finned tube can separate independent layout, form the tube bank of bleeding separately, also can irregular mixed-arrangement, form the uniform tube bank of bleeding.
3. according to the antifreeze incondensable gas withdrawing device of claim 1 described self-heating type air cooling tubes condenser, it is characterized in that: the interface of bleeding adopts and bleeds finned tube end plate identical materials, adopts the flat box-like structure of passing through mutually with tubulose of rectangular opening.
4. according to the antifreeze incondensable gas withdrawing device of claim 1 described self-heating type air cooling tubes condenser, it is characterized in that: on-condensible gas is extracted the position of female pipe out in the steam distribution header of steam-distributing pipe bottom, be fixed on the metal tube of wooden partition, the end that rises at steam-distributing pipe pools together, and is connected to the female pipe of aspiration pump.
5. according to the antifreeze incondensable gas withdrawing device of claim 1 described self-heating type air cooling tubes condenser, it is characterized in that: being connected flexible pipe and can adopting heat-resisting, corrosion-resistant, fatigue proof metal, plastics, rubber, pottery, composite between bleed finned tube and the female pipe of bleeding of on-condensible gas withdrawing device between two double thread articulations.
6. according to the antifreeze incondensable gas withdrawing device of claim 1 described self-heating type air cooling tubes condenser, it is characterized in that: the place is provided with baffle plate in following current finned tube steam inlet, be shaped as rectangle, material is heat-resisting, corrosion-resistant, fatigue proof metal, plastics, rubber, pottery, composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520142667 CN200941010Y (en) | 2005-12-15 | 2005-12-15 | Anti-freezing non-coagulating gas extractor of self-heating air cooling condensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520142667 CN200941010Y (en) | 2005-12-15 | 2005-12-15 | Anti-freezing non-coagulating gas extractor of self-heating air cooling condensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200941010Y true CN200941010Y (en) | 2007-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520142667 Expired - Lifetime CN200941010Y (en) | 2005-12-15 | 2005-12-15 | Anti-freezing non-coagulating gas extractor of self-heating air cooling condensator |
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| Country | Link |
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| CN (1) | CN200941010Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425959A (en) * | 2011-09-16 | 2012-04-25 | 中国电力工程顾问集团西北电力设计院 | Anti-freezing method of counter-current tube bundle of air cooling radiator |
| WO2013177970A1 (en) * | 2012-05-29 | 2013-12-05 | Li Xianxi | Gas condensation and heat regeneration device |
| CN104132558A (en) * | 2013-11-18 | 2014-11-05 | 成都科创佳思科技有限公司 | Non-condensable gas emission device |
| CN106556260A (en) * | 2015-09-28 | 2017-04-05 | 新特能源股份有限公司 | A kind of Air-Cooling Island inlet valve antifreeze control system |
| CN108917418A (en) * | 2018-08-02 | 2018-11-30 | 山西大学 | A kind of Air-Cooling Island fair current tube bank vacuum evacuation device |
-
2005
- 2005-12-15 CN CN 200520142667 patent/CN200941010Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425959A (en) * | 2011-09-16 | 2012-04-25 | 中国电力工程顾问集团西北电力设计院 | Anti-freezing method of counter-current tube bundle of air cooling radiator |
| WO2013177970A1 (en) * | 2012-05-29 | 2013-12-05 | Li Xianxi | Gas condensation and heat regeneration device |
| CN104132558A (en) * | 2013-11-18 | 2014-11-05 | 成都科创佳思科技有限公司 | Non-condensable gas emission device |
| CN106556260A (en) * | 2015-09-28 | 2017-04-05 | 新特能源股份有限公司 | A kind of Air-Cooling Island inlet valve antifreeze control system |
| CN106556260B (en) * | 2015-09-28 | 2019-02-15 | 新特能源股份有限公司 | A kind of Air-Cooling Island inlet valve antifreeze control system |
| CN108917418A (en) * | 2018-08-02 | 2018-11-30 | 山西大学 | A kind of Air-Cooling Island fair current tube bank vacuum evacuation device |
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Effective date of registration: 20090220 Address after: Beijing City, Xuanwu District Baiguang road two No. 1 in building 12 room 1220, zip code: 100761 Patentee after: SP Longyuan Power Technology & Engineering Co., Ltd. Address before: 3-2-801, North horse factory area, Lianhua Road East, Beijing, Haidian District, China: 100038 Patentee before: Guan Xiaochun |
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| ASS | Succession or assignment of patent right |
Owner name: GUODIAN LONGYUAN POWER TECHNOLOGY ENGINEER CO.,LTD Free format text: FORMER OWNER: GUAN XIAOCHUN Effective date: 20090220 |
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Addressee: SP Longyuan Power Technology & Engineering Co., Ltd. Ma Jun Document name: Notification to Pay the Fees |
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Addressee: Technology & Engineering Co. Ltd. Ma Document name: Notification of Termination of Patent Right |
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| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100039, room 12, floor 1, building 16, No. 1201 West Fourth Ring Road, Beijing, Haidian District Patentee after: SP Longyuan Power Technology & Engineering Co., Ltd. Address before: 100761 Beijing city Xuanwu District Baiguang road two No. 1 in building 12 room 1220 Patentee before: SP Longyuan Power Technology & Engineering Co., Ltd. |
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