CN202182458U - Heat supply network drainage system of supercritical direct air cooling heat supply unit - Google Patents
Heat supply network drainage system of supercritical direct air cooling heat supply unit Download PDFInfo
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- CN202182458U CN202182458U CN2011202265437U CN201120226543U CN202182458U CN 202182458 U CN202182458 U CN 202182458U CN 2011202265437 U CN2011202265437 U CN 2011202265437U CN 201120226543 U CN201120226543 U CN 201120226543U CN 202182458 U CN202182458 U CN 202182458U
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- district heating
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- 238000001816 cooling Methods 0.000 title abstract description 6
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 67
- 238000010438 heat treatment Methods 0.000 claims description 97
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 25
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000001172 regenerating effect Effects 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
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Abstract
The utility model discloses a hydrophobic system of supercritical direct air cooling heat supply unit heat supply network, it includes heat supply network heater, exhaust apparatus, condensate fine treatment unit, low pressure feed water heater and oxygen-eliminating device, and it is still including the hydrophobic cooler unit of heat supply network heater. The utility model has the advantages that 1, the whole condensed water is purified by the condensed water fine treatment unit, the water quality is ensured, and the system is simple and easy to operate; 2. the auxiliary power is reduced, and the energy is saved; 3. the regenerative steam extraction is reduced, the generated energy is improved, the economic benefit is increased, and the energy is saved.
Description
Technical field
The utility model relates to a kind of heat supply unit heat supply network draining system, particularly relates to a kind of overcritical Direct Air-Cooled heat supply unit heat supply network draining system.
Background technology
The supercritical once-through boiler water supply system is high to the quality requirements of the water of entering boiler, and the maximum characteristics of direct current cooker are not have drum, also just do not have blow-off of boiler water.The feedwater that gets into boiler all is converted into steam, feeds water contained salinity except that being dissolved on a small quantity the steam, and all the other impurity all will be deposited on the heating surface inwall.Pressure reduces steam in steam turbine acting back, begins under high pressure that dissolved substances can discharge, and turbine blade is produced the erosion of solid solids.It is thus clear that feedwater water quality directly has influence on boiler, steam turbine life-span and the long-term safety operation of supercritical unit.For guaranteeing higher boiler feedwater quality; " thermal power plant chemical design technical regulation " (DL/T5068-2006) 8.1.2 bar has provided clearly regulation to the water treatment system of direct current cooker: " to the Steam Turbine by the direct current cooker steam supply; all condensate should be carried out precision processing, should be provided with except that facilities simultaneously.Remove not equipment usefulness of facilities, but should not be less than 2, the precision processing demineralizer should be provided with subsequent use.”
Present large-scale heat supply power plant adopts the one-level heat exchange heat-supplying mode of extracting Steam Heating heat supply network recirculated water from steam turbine out, and steam condenses into the hydrophobic recycle in the Steam Turbine Regenerative System that returns after in the middle of heat exchangers for district heating, heating heat supply network recirculated water.In the existing hydrophobic technological process of heat supply power plant heat exchangers for district heating,, be difficult to be provided with effective water treatment technology owing to receive heat supply network heater condensate temperature (generally between 138～162 ℃) restriction.Therefore, heat exchangers for district heating water side is as leaking, and the heat exchangers for district heating that water quality reduces is hydrophobic just directly to get into oxygen-eliminating device, and then gets into boiler body through the feed water system of boiler; If heat supply power plant adopts supercritical once-through boiler, the heat supply network drain water quality descends will directly cause the direct current cooker deteriorating water quality, and then influences boiler safety stable operation, finally influences boiler life.
Solving the most direct thinking of problem noted earlier is to utilize the condensate precision processing apparatus processes heat exchangers for district heating that generally is provided with in the middle of the power plant condensate system hydrophobic, it is reached send into boiler on the super critical boiler after the water quality standard; But directly send into condensate system can cause the condensing damage of " resin-oatmeal " in the middle of the polishing unit to the heat exchangers for district heating hydrophobic (temperature is generally between 138～162 ℃ as previously mentioned) of not cooling.
At present, have adopt heat exchangers for district heating hydrophobic through drainage pump boost again through dredge cooler cooling back get into precision processing before the system of condensate, the shortcoming of this system is to make hydrophobic pressure higher owing to the process drainage pump boosts; So the form to dredging cooler has restriction, simultaneously, the supercritical unit heating demand is all very big; Load fluctuation is also very big, adopts this system can make condensate pump and drainage pump a meeting always arranged in underrun, and the efficiency of pump of underrun can be lower; Increased loss; Offset the merit of very most of backheat, and cause system complex behind the pressure heater and drainage pump, safeguard many, take up an area of greatly, cost is very high, offset the advantage that system brings.
The utility model content
The purpose of the utility model is to provide a kind of overcritical Direct Air-Cooled heat supply unit heat supply network draining system.
The purpose of the utility model is implemented by following technical scheme; A kind of overcritical Direct Air-Cooled heat supply unit heat supply network draining system; It comprises heat exchangers for district heating, exhaust apparatus, condensate precision processing unit, low-pressure heater and oxygen-eliminating device; It also includes heat exchangers for district heating drain cooler unit; The hydrophobic outlet of said heat exchangers for district heating is connected with the hydrophobic inlet duct of said heat exchangers for district heating drain cooler unit; The hydrophobic outlet of said heat exchangers for district heating drain cooler unit is connected with the hydrophobic inlet duct of said exhaust apparatus, and the condensate outlet of said exhaust apparatus is connected with the condensate inlet duct of said condensate precision processing unit, and the condensate outlet of said condensate precision processing unit is connected with the condensate inlet duct of said heat exchangers for district heating drain cooler unit; The condensate outlet of said heat exchangers for district heating drain cooler unit is connected with said low-pressure heater pipeline, and said low-pressure heater is connected with said oxygen-eliminating device pipeline.
The condensate outlet of said condensate precision processing unit also is connected with said low-pressure heater pipeline; The condensate outlet that connects said condensate precision processing unit is provided with valve with the pipeline of said low-pressure heater, and the condensate outlet that connects said condensate precision processing unit is provided with valve with the pipeline of the condensate inlet of said heat exchangers for district heating drain cooler unit.
Can also be provided with one or two said low-pressure heater on the condensate outlet that connects said condensate precision processing unit and the pipeline of said low-pressure heater, one or two said low-pressure heater and said heat exchangers for district heating drain cooler unit are connected in parallel.
The hydrophobic outlet of said heat exchangers for district heating also is connected with the hydrophobic inlet duct of said exhaust apparatus; The pipeline of hydrophobic inlet that connects hydrophobic outlet and the said exhaust apparatus of said heat exchangers for district heating is provided with valve, and the pipeline of hydrophobic inlet that connects hydrophobic outlet and the said heat exchangers for district heating drain cooler unit of said heat exchangers for district heating is provided with valve.
Said heat exchangers for district heating drain cooler unit is made up of at least one heat exchangers for district heating drain cooler.
Flow automatically to steam exhaust device after the hydrophobic cooling that the utility model utilizes the unit condensate that heat exchangers for district heating is come out; Said temperature-fall period has satisfied condensate precision processing unit to being processed the requirement of the hydrophobic water temperature of heat exchangers for district heating; And then realize because of heat exchangers for district heating leakage etc. the contaminated heat exchangers for district heating of reason is hydrophobic fully handle through condensate precision processing unit after; Get into the feed water system of boiler, satisfied the super critical boiler water supply system requirements in water quality.The utility model utilizes the conventional system of similar this technical field simultaneously through adjustment heat exchangers for district heating hydrophobic medium parameter and whereabouts, has realized the hydrophobic purpose of sending into the feed water system of boiler after treatment again of heat exchangers for district heating.
The advantage of the utility model is; 1, through in overcritical Direct Air-Cooled heat supply unit heat supply network draining system, heat exchangers for district heating drain cooler unit being set rationally; Effectively reclaim the hydrophobic heat of heat exchangers for district heating, the cooling back gets into steam exhaust device, makes whole condensate carry out purified treatment through condensate precision processing unit; Guaranteed water quality, system is simple, easy operating; 2, the utility model is not provided with heat exchangers for district heating drainage pump unit, and it is hydrophobic to lean on pipeline self to reclaim heat exchangers for district heating, reduces station service, energy savings; 3, condensate and heat supply network are hydrophobic has improved condensing water temperature through after the unit heat exchange of heat exchangers for district heating drain cooler, reduces regenerative steam, improves generated energy, increases economic benefit, energy savings.
Description of drawings
Fig. 1 is 1 one kinds of overcritical Direct Air-Cooled heat supply unit heat supply network draining system flow charts of embodiment.
Fig. 2 is 2 one kinds of overcritical Direct Air-Cooled heat supply unit heat supply network draining system flow charts of embodiment.
Fig. 3 is 3 one kinds of overcritical Direct Air-Cooled heat supply unit heat supply network draining system flow charts of embodiment.
Heat exchangers for district heating 1, heat exchangers for district heating drain cooler unit 2, exhaust apparatus 3, condensate precision processing unit 4, low-pressure heater 5, oxygen-eliminating device 6, valve 7.
The specific embodiment
Embodiment 1: a kind of overcritical Direct Air-Cooled heat supply unit heat supply network draining system; It comprises heat exchangers for district heating 1, exhaust apparatus 3, condensate precision processing unit 4, low-pressure heater 5 and oxygen-eliminating device 6; It also includes heat exchangers for district heating drain cooler unit 2; The hydrophobic outlet of heat exchangers for district heating 1 is connected with the hydrophobic inlet duct of heat exchangers for district heating drain cooler unit 2; The hydrophobic outlet of heat exchangers for district heating drain cooler unit 2 is connected with the hydrophobic inlet duct of exhaust apparatus 3; The condensate outlet of exhaust apparatus 3 is connected with the condensate inlet duct of condensate precision processing unit 4; The condensate outlet of condensate precision processing unit 4 is connected with the condensate inlet duct of heat exchangers for district heating drain cooler unit 2, and the condensate outlet of heat exchangers for district heating drain cooler unit 2 is connected with low-pressure heater 5 pipelines, and low-pressure heater 5 is connected with oxygen-eliminating device 6 pipelines.The condensate outlet of condensate precision processing unit 4 also is connected with low-pressure heater 5 pipelines; Connect the condensate outlet of condensate precision processing unit 4 and the pipeline of low-pressure heater 5 and be provided with valve 7, the condensate outlet of connection condensate precision processing unit 4 is provided with valve 7 with the pipeline of the condensate inlet of heat exchangers for district heating drain cooler unit 2.The hydrophobic outlet of heat exchangers for district heating 1 also is connected with the hydrophobic inlet duct of exhaust apparatus 3; The pipeline of the hydrophobic outlet of connection heat exchangers for district heating 1 and the hydrophobic inlet of exhaust apparatus 3 is provided with valve 7, and the pipeline of the hydrophobic outlet of connection heat exchangers for district heating 1 and the hydrophobic inlet of heat exchangers for district heating drain cooler unit 2 is provided with valve 7.Heat exchangers for district heating drain cooler unit 2 is made up of two heat exchangers for district heating drain coolers.
Embodiment 2: a kind of overcritical Direct Air-Cooled heat supply unit heat supply network draining system; It comprises heat exchangers for district heating 1, exhaust apparatus 3, condensate precision processing unit 4, low-pressure heater 5 and oxygen-eliminating device 6; It also includes heat exchangers for district heating drain cooler unit 2; The hydrophobic outlet of heat exchangers for district heating 1 is connected with the hydrophobic inlet duct of heat exchangers for district heating drain cooler unit 2; The hydrophobic outlet of heat exchangers for district heating drain cooler unit 2 is connected with the hydrophobic inlet duct of exhaust apparatus 3; The condensate outlet of exhaust apparatus 3 is connected with the condensate inlet duct of condensate precision processing unit 4; The condensate outlet of condensate precision processing unit 4 is connected with the condensate inlet duct of heat exchangers for district heating drain cooler unit 2, and the condensate outlet of heat exchangers for district heating drain cooler unit 2 is connected with low-pressure heater 5 pipelines, and low-pressure heater 5 is connected with oxygen-eliminating device 6 pipelines.The condensate outlet of condensate precision processing unit 4 also is connected with low-pressure heater 5 pipelines; The low-pressure heater 5 that the condensate outlet of connection condensate precision processing unit 4 and the pipeline of low-pressure heater 5 are provided with valve 7 and are connected in parallel with heat exchangers for district heating drain cooler unit 2, the pipeline of the condensate outlet of connection condensate precision processing unit 4 and the condensate inlet of heat exchangers for district heating drain cooler unit 2 is provided with valve 7.The hydrophobic outlet of heat exchangers for district heating 1 also is connected with the hydrophobic inlet duct of exhaust apparatus 3; The pipeline of the hydrophobic outlet of connection heat exchangers for district heating 1 and the hydrophobic inlet of exhaust apparatus 3 is provided with valve 7, and the pipeline of the hydrophobic outlet of connection heat exchangers for district heating 1 and the hydrophobic inlet of heat exchangers for district heating drain cooler unit 2 is provided with valve 7.Heat exchangers for district heating drain cooler unit 2 is made up of a heat exchangers for district heating drain cooler.
Embodiment 3: a kind of overcritical Direct Air-Cooled heat supply unit heat supply network draining system; It comprises heat exchangers for district heating 1, exhaust apparatus 3, condensate precision processing unit 4, low-pressure heater 5 and oxygen-eliminating device 6; It also includes heat exchangers for district heating drain cooler unit 2; The hydrophobic outlet of heat exchangers for district heating 1 is connected with the hydrophobic inlet duct of heat exchangers for district heating drain cooler unit 2; The hydrophobic outlet of heat exchangers for district heating drain cooler unit 2 is connected with the hydrophobic inlet duct of exhaust apparatus 3; The condensate outlet of exhaust apparatus 3 is connected with the condensate inlet duct of condensate precision processing unit 4; The condensate outlet of condensate precision processing unit 4 is connected with the condensate inlet duct of heat exchangers for district heating drain cooler unit 2, and the condensate outlet of heat exchangers for district heating drain cooler unit 2 is connected with low-pressure heater 5 pipelines, and low-pressure heater 5 is connected with oxygen-eliminating device 6 pipelines.The condensate outlet of condensate precision processing unit 4 also is connected with low-pressure heater 5 pipelines; Two low-pressure heaters 5 that the condensate outlet of connection condensate precision processing unit 4 and the pipeline of low-pressure heater 5 are provided with valve 7 and are connected in parallel with heat exchangers for district heating drain cooler unit 2; Two low-pressure heaters 5 are connected in series, and the condensate outlet of connection condensate precision processing unit 4 is provided with valve 7 with the pipeline of the condensate inlet of heat exchangers for district heating drain cooler unit 2.The hydrophobic outlet of heat exchangers for district heating 1 also is connected with the hydrophobic inlet duct of exhaust apparatus 3; The pipeline of the hydrophobic outlet of connection heat exchangers for district heating 1 and the hydrophobic inlet of exhaust apparatus 3 is provided with valve 7, and the pipeline of the hydrophobic outlet of connection heat exchangers for district heating 1 and the hydrophobic inlet of heat exchangers for district heating drain cooler unit 2 is provided with valve 7.Heat exchangers for district heating drain cooler unit 2 is made up of three heat exchangers for district heating drain coolers.
Claims (5)
1. overcritical Direct Air-Cooled heat supply unit heat supply network draining system; It comprises heat exchangers for district heating, exhaust apparatus, condensate precision processing unit, low-pressure heater and oxygen-eliminating device; It is characterized in that; It also includes heat exchangers for district heating drain cooler unit; The hydrophobic outlet of said heat exchangers for district heating is connected with the hydrophobic inlet duct of said heat exchangers for district heating drain cooler unit; The hydrophobic outlet of said heat exchangers for district heating drain cooler unit is connected with the hydrophobic inlet duct of said exhaust apparatus, and the condensate outlet of said exhaust apparatus is connected with the condensate inlet duct of said condensate precision processing unit, and the condensate outlet of said condensate precision processing unit is connected with the condensate inlet duct of said heat exchangers for district heating drain cooler unit; The condensate outlet of said heat exchangers for district heating drain cooler unit is connected with said low-pressure heater pipeline, and said low-pressure heater is connected with said oxygen-eliminating device pipeline.
2. according to the said a kind of overcritical Direct Air-Cooled heat supply unit heat supply network draining system of claim 1; It is characterized in that; The condensate outlet of said condensate precision processing unit also is connected with said low-pressure heater pipeline; The condensate outlet that connects said condensate precision processing unit is provided with valve with the pipeline of said low-pressure heater, and the condensate outlet that connects said condensate precision processing unit is provided with valve with the pipeline of the condensate inlet of said heat exchangers for district heating drain cooler unit.
3. according to the said a kind of overcritical Direct Air-Cooled heat supply unit heat supply network draining system of claim 2; It is characterized in that; Can also be provided with one or two said low-pressure heater on the condensate outlet that connects said condensate precision processing unit and the pipeline of said low-pressure heater, one or two said low-pressure heater and said heat exchangers for district heating drain cooler unit are connected in parallel.
4. according to any described a kind of overcritical Direct Air-Cooled heat supply unit heat supply network draining system of claim 1-3; It is characterized in that; The hydrophobic outlet of said heat exchangers for district heating also is connected with the hydrophobic inlet duct of said exhaust apparatus; The pipeline of hydrophobic inlet that connects hydrophobic outlet and the said exhaust apparatus of said heat exchangers for district heating is provided with valve, and the pipeline of hydrophobic inlet that connects hydrophobic outlet and the said heat exchangers for district heating drain cooler unit of said heat exchangers for district heating is provided with valve.
5. according to any described a kind of overcritical Direct Air-Cooled heat supply unit heat supply network draining system of claim 1-3, it is characterized in that said heat exchangers for district heating drain cooler unit is made up of at least one heat exchangers for district heating drain cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202265437U CN202182458U (en) | 2011-06-30 | 2011-06-30 | Heat supply network drainage system of supercritical direct air cooling heat supply unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202265437U CN202182458U (en) | 2011-06-30 | 2011-06-30 | Heat supply network drainage system of supercritical direct air cooling heat supply unit |
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| Publication Number | Publication Date |
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| CN202182458U true CN202182458U (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202265437U Expired - Fee Related CN202182458U (en) | 2011-06-30 | 2011-06-30 | Heat supply network drainage system of supercritical direct air cooling heat supply unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836610A (en) * | 2014-03-05 | 2014-06-04 | 华电电力科学研究院 | Heat supply network water drainage heating system capable of improving economical efficiency of heat supply unit |
| CN105782946A (en) * | 2016-05-09 | 2016-07-20 | 中国能源建设集团广东省电力设计研究院有限公司 | Vertical high-pressure heater drain system |
| CN106338208A (en) * | 2016-08-19 | 2017-01-18 | 华能北京热电有限责任公司 | Heat supply network drain recovery system and method |
-
2011
- 2011-06-30 CN CN2011202265437U patent/CN202182458U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836610A (en) * | 2014-03-05 | 2014-06-04 | 华电电力科学研究院 | Heat supply network water drainage heating system capable of improving economical efficiency of heat supply unit |
| CN103836610B (en) * | 2014-03-05 | 2015-12-09 | 华电电力科学研究院 | A kind of hydrophobic heating system of heat supply network improving thermal power plant unit economy |
| CN105782946A (en) * | 2016-05-09 | 2016-07-20 | 中国能源建设集团广东省电力设计研究院有限公司 | Vertical high-pressure heater drain system |
| CN106338208A (en) * | 2016-08-19 | 2017-01-18 | 华能北京热电有限责任公司 | Heat supply network drain recovery system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: INNER MONGOLIA ELECTRIC POWER SURVEY DESIGN INSTIT Free format text: FORMER NAME: INNER MONGOLIA ELECTRICAL POWER INVESTIGATE AND DESIGN INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 010020 the Inner Mongolia Autonomous Region Hohhot City Xilin Road No. 209 Patentee after: INNER MONGOLIA ELECTRIC POWER SURVEY & DESIGN INSTITUTE CO., LTD. Address before: 010020 the Inner Mongolia Autonomous Region Hohhot City Xilin Road No. 209 Patentee before: Inner Mongolia Electric Power Survey Design Institute |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120404 Termination date: 20200630 |