CN202647719U - Heating network drain treatment system for subcritical wet cooling heat supply unit - Google Patents

Heating network drain treatment system for subcritical wet cooling heat supply unit Download PDF

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Publication number
CN202647719U
CN202647719U CN 201220259287 CN201220259287U CN202647719U CN 202647719 U CN202647719 U CN 202647719U CN 201220259287 CN201220259287 CN 201220259287 CN 201220259287 U CN201220259287 U CN 201220259287U CN 202647719 U CN202647719 U CN 202647719U
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China
Prior art keywords
heat
heat supply
drain
hydrophobic
supply unit
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Active
Application number
CN 201220259287
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Chinese (zh)
Inventor
叶强
李辉
董舟
杨立辉
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China Electric Power Construction Group Hebei electric survey and Design Research Institute Co., Ltd.
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Hebei Electric Power Design and Research Institute
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Priority to CN 201220259287 priority Critical patent/CN202647719U/en
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Abstract

The utility model discloses a heating network drain treatment system for a subcritical wet cooling heat supply unit, which comprises a condenser, low-pressure heaters, a heating network heater, and a deaerator, wherein the heating network heater is provided with a drain cooling section. The condensed water outputted from the condenser enters the deaerator through a condensed water pipeline and multiple groups of low-pressure heaters, the steam outputted from a steam turbine is converted into drain water after heat exchange by the heating network heater, and the generated drain water is conveyed to the condensed water pipeline through a drain pipeline, wherein the condensed water pipeline is arranged in front of the final-stage low-pressure heater. The heating network drain treatment system carries out a secondary heat exchange treatment to the drain water of the heating network heater, which not only can completely recover the heat of the drain water of the heating network, reduce the heat loss of cold junctions, and improve the heating capacity and economic performance of the heat supply unit, but also can reduce the heat consumption of the heat supply unit and the standard coal consumption in power generation during a heating period and save heating cost.

Description

Subcritical clammy heat supply unit heat supply network hydrophobic treatments system
Technical field
The utility model relates to the heat supply network hydrophobic treatments system of a kind of heat supply unit heat supply network hydrophobic treatments system, particularly a kind of subcritical clammy heat supply unit.
Background technology
Large-scale heat supply power plant adopts from steam turbine and extracts the heat-supplying mode that steam and heat supply network recirculated water carry out heat exchange out, steam heats heat supply network recirculated water in heat exchangers for district heating, condense into after the heat of steam is absorbed by heat supply network recirculated water hydrophobic, hydrophobic return in the Steam Turbine Regenerative System recycling.The heat exchangers for district heating draining system is the important component part of heat network system, and its system configuration is related to safety and the economical operation of heat network system and whole therrmodynamic system.The heat exchangers for district heating of subcritical heating unit is hydrophobic, all directly enters higher-pressure deaerator through drain water piping generally speaking.At present the hydrophobic water temperature of subcritical heat supply unit heat exchangers for district heating of operation is about about 145 ℃, and about 60 ~ 70 ℃ of heat supply network return water temperature, efficiency of energy utilization is lower.
The utility model content
The utility model technical issues that need to address provide a kind ofly can either reclaim the hydrophobic heat of heat supply network fully, reduce the cold junction heat loss, reduces investment outlay again, reliable subcritical clammy heat supply unit heat supply network hydrophobic treatments system.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is as follows.
Subcritical clammy heat supply unit heat supply network hydrophobic treatments system, comprise condenser, low-pressure heater, heat exchangers for district heating and oxygen-eliminating device, the condensate water of described condenser output enters oxygen-eliminating device by condensing water conduit through some groups of low-pressure heaters, the described hydrophobic oxygen-eliminating device that is delivered to that after the heat exchangers for district heating heat exchange, generates from the steam of steam turbine output, be provided with in the described heat exchangers for district heating for carrying out the hydrophobic cooling section of secondary heat exchange with steam condensate, in the hydrophobic condensing water conduit before drain water piping is delivered to the final stage low-pressure heater.
Improvement of the present utility model is: be provided with in the described drain water piping and be used to the hydrophobic drainage pump that power is provided.
Because the technological progress of having adopted technique scheme, the utility model to obtain is as follows.
The utility model is by arranging hydrophobic cooling section directly with about hydrophobic effective temperature-reducing to 80 ℃ in heat exchangers for district heating, then about 80 ℃ hydrophobic sent under the effect of drainage pump in the condensing water conduit before the afterbody low-pressure heater, entered again oxygen-eliminating device.Adopt the utility model that the hydrophobic secondary heat exchange that carries out of heat exchangers for district heating is processed, not only can reclaim the hydrophobic heat of heat supply network fully, reduce the cold junction heat loss, improve heat capacity and the economic performance of heat supply unit; Can also reduce the hear rate of heat supply unit, reduce the Heating Period consumption of standard coal for power generation, save heat cost.The drainage pump that arranges in the drain water piping can for the hydrophobic endlessly circulation power that provides in the drain water piping, guarantee the stable operation of whole system.
Description of drawings
Fig. 1 is the utility model structural representation.
Wherein, 1. condenser, 2. low-pressure heater, 3. heat exchangers for district heating, 31. hydrophobic cooling section, 4. oxygen-eliminating devices.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further details.
A kind of subcritical clammy heat supply unit heat supply network hydrophobic treatments system, its structure as shown in Figure 1.Comprise condenser 1, low-pressure heater 2, heat exchangers for district heating 3 and oxygen-eliminating device 4, low-pressure heater is provided with four groups.Be provided with hydrophobic cooling section 31 in the heat exchangers for district heating 3, be used for carrying out secondary heat exchange with steam condensate, make heat exchangers for district heating again carry out degree of depth heat exchange after, the circulating water temperature of exporting in the heat supply network increases, with the hydrophobic temperature of further reduction.
Be provided with altogether two branch roads in the utility model, one is that condensate water is carried branch road, and one is hydrophobic conveying branch road.Wherein condensate water is carried and to be comprised condenser, four groups of low-pressure heaters and oxygen-eliminating device on the branch road, connects by condensing water conduit between above-mentioned each equipment, is used for the condensate water of condenser output is delivered to oxygen-eliminating device.Hydrophobic conveying branch road comprises heat exchangers for district heating and drainage pump, heat exchangers for district heating is communicated with steam turbine by jet chimney, be used for extracting the steam of steam turbine, generation was hydrophobic after steam hydrophobic cooling section in heat exchangers for district heating carried out degree of depth heat exchange, hydrophobicly be transported in the condensing water conduit before the final stage low-pressure heater by drain water piping, the condensate water water yield is increased, send at last oxygen-eliminating device.The hydrophobic circulation power that provides in the drain water piping is provided the drainage pump that arranges in the drain water piping.
In the same clammy heat supply unit, under identical throttle flow condition, heating operating mode generating hear rate reduces about 300kJ/kWh, and consumption of standard coal for power generation reduces about 11g/kWh, improves simultaneously the single unit heat capacity and improves about 30MW.

Claims (2)

1. subcritical clammy heat supply unit heat supply network hydrophobic treatments system, comprise condenser (1), low-pressure heater (2), heat exchangers for district heating (3) and oxygen-eliminating device (4), the condensate water of described condenser (1) output enters oxygen-eliminating device (4) by condensing water conduit through some groups of low-pressure heaters (2), the described hydrophobic oxygen-eliminating device (4) that is delivered to that after heat exchangers for district heating (3) heat exchange, generates from the steam of steam turbine output, it is characterized in that: be provided with in the described heat exchangers for district heating (3) for carrying out the hydrophobic cooling section (31) of secondary heat exchange with steam condensate, in the hydrophobic condensing water conduit before drain water piping is delivered to the final stage low-pressure heater.
2. subcritical clammy heat supply unit heat supply network hydrophobic treatments according to claim 1 system is characterized in that: be provided with in the described drain water piping and be used to the hydrophobic drainage pump that power is provided.
CN 201220259287 2012-06-04 2012-06-04 Heating network drain treatment system for subcritical wet cooling heat supply unit Active CN202647719U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220259287 CN202647719U (en) 2012-06-04 2012-06-04 Heating network drain treatment system for subcritical wet cooling heat supply unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220259287 CN202647719U (en) 2012-06-04 2012-06-04 Heating network drain treatment system for subcritical wet cooling heat supply unit

Publications (1)

Publication Number Publication Date
CN202647719U true CN202647719U (en) 2013-01-02

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Family Applications (1)

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CN 201220259287 Active CN202647719U (en) 2012-06-04 2012-06-04 Heating network drain treatment system for subcritical wet cooling heat supply unit

Country Status (1)

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CN (1) CN202647719U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

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C14 Grant of patent or utility model
CP01 Change in the name or title of a patent holder

Address after: 050031 No. 6 Jianhua Street, Shijiazhuang City, Hebei Province

Patentee after: China Electric Power Construction Group Hebei electric survey and Design Research Institute Co., Ltd.

Address before: 050031 No. 6 Jianhua Street, Shijiazhuang City, Hebei Province

Patentee before: Hebei Province Power Surveying Design & Research Institute

CP01 Change in the name or title of a patent holder