CN103953961A - High back pressure and heat pump combined heat supply system for air cooling unit - Google Patents
High back pressure and heat pump combined heat supply system for air cooling unit Download PDFInfo
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- CN103953961A CN103953961A CN201410210513.5A CN201410210513A CN103953961A CN 103953961 A CN103953961 A CN 103953961A CN 201410210513 A CN201410210513 A CN 201410210513A CN 103953961 A CN103953961 A CN 103953961A
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- heat supply
- heat pump
- heat
- back pressure
- high back
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
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Abstract
The invention relates to the technical field of industrial heat supply, and particularly discloses a high back pressure and heat pump combined heat supply system for an air cooling unit. The high back pressure and heat pump combined heat supply system for the air cooling unit comprises the air cooling unit formed by an intermediate pressure cylinder and a low pressure cylinder. The high back pressure and heat pump combined heat supply system is characterized in that a steam discharge pipe of the air cooling unit is communicated with an air cooling island through a steam exhaust valve A, and is communicated with a heat pump and a heat supply condenser in parallel through a steam exhaust valve B, a water return pipe of a heat supply network is connected to a water inlet pipe of the heat supply condenser, a water outlet pipe of the heat supply condenser is communicated with a water inlet pipe of the heat pump, and a water outlet pipe of the heat pump is communicated with a water outlet pipe of the heat supply network through a heat supply initial station. The high back pressure and heat pump combined heat supply system solves the problems of small capacity, incapability of normally operating due to high water return temperature and freezing protection difficulty of the air cooling island of the original heat supply network adopting an independent high back pressure technology, and incapability of completely recycling the steam exhaust waste heat, too large investment and insufficient power supply volume at the heat supply period of an independent heat pump technology, and has the advantages of small investment, large earnings and high safety.
Description
(1) technical field
The present invention relates to heat supply process field, particularly a kind of Air-cooled Unit high back pressure and heat pump united heating system.
(2) background technology
High back pressure circulating water heating technology and heat pump heat supply technology are all that realizing heat supply phase cold source energy is zero in order to reclaim the loss of air-cooled steam turbine generator group low pressure (LP) cylinder steam discharge.High back pressure circulating water heating technology is to use the former high back pressure of Air-cooled Unit, increases reinforced heat supply condenser and reclaims steam discharge for heat supply.The factors such as heat supply phase back pressure is low, hot net water flow is little owing to being subject to, heat supply network return water temperature height affect, to such an extent as to heat supply network recirculated water can not all be taken away unit exhausted spare heat when the condenser.
In order to ensure security and the economy of the operation of unit heat supply phase high back pressure, just need to improve unit back pressure, increase heat supply network circulating water flow, reduce recirculated water degree of rising again or open a row Air-Cooling Island heat release security and the economy that ensure the operation of unit high back pressure.If reclaim exhausted spare heat by heat pump separately, need a large amount of heat pumps and auxiliary device and a large amount of drawing gas to be used as driving heat source in order to whole recovery exhausted spare heats, cause heat supply phase generated energy deficiency or steam discharge not to reclaim completely, equipment repair and maintenance amount increases.
(3) summary of the invention
The present invention is in order to make up the deficiencies in the prior art, and a kind of reasonable in design, energy-saving and emission-reduction, safe Air-cooled Unit high back pressure and heat pump united heating system are provided.
The present invention is achieved through the following technical solutions:
A kind of Air-cooled Unit high back pressure and heat pump united heating system, comprise the Air-cooled Unit being formed by intermediate pressure cylinder and low pressure (LP) cylinder, it is characterized in that: the gland steam exhauster of described Air-cooled Unit is communicated with Air-Cooling Island by exhaust steam valve A, and by exhaust steam valve B heat pump and the heat supply condenser of being communicated with in parallel, heat supply network return pipe connects the water inlet pipe of heat supply condenser, the outlet pipe of heat supply condenser is communicated with the water inlet pipe of heat pump, and the outlet pipe of heat pump is communicated with heat supply network outlet pipe by heat supply initial station.
The present invention is not changing on the basis of the original design of Air-cooled Unit, draws two-way steam discharge enter respectively heat supply condenser and heat pump at former gland steam exhauster, has solved shortcoming and deficiency that high back pressure heat supply and heat pump heat supply exist, realizes high back pressure and heat pump united heat supply.
More excellent technical scheme of the present invention is:
Described Air-cooled Unit connects heat pump by extraction valve.
The back pressure of described Air-cooled Unit is 33kPa.
Described heat pump and the venthole of heat supply condenser are all communicated with the outlet conduit of Air-Cooling Island by condensate valve.
The problem such as the present invention has not only solved that the original heating network capacity of independent high back pressure technology is little, return water temperature highly can not normally move, Air-Cooling Island is antifreeze, also solve independent heat pump techniques and can not reclaim exhausted spare heat completely, drop into the problems such as excessive, heat supply phase generated energy deficiency, there is the advantages such as investment is little, income is large, security is high.
(4) brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is structural representation of the present invention.
In figure, 1 intermediate pressure cylinder, 2 low pressure (LP) cylinders, 3 exhaust steam valve A, 4 Air-Cooling Islands, 5 exhaust steam valve B, 6 heat pumps, 7 heat supply condensers, 8 heat supply network return pipes, 9 heat supply initial stations, 10 heat supply network outlet pipes, 11 extraction valves, 12 condensate valves.
(5) detailed description of the invention
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises the Air-cooled Unit being made up of intermediate pressure cylinder 1 and low pressure (LP) cylinder 2, the gland steam exhauster of described Air-cooled Unit is communicated with Air-Cooling Island 4 by exhaust steam valve A3, and by exhaust steam valve B5 heat pump 6 and the heat supply condenser 7 of being communicated with in parallel, heat supply network return pipe 8 connects the water inlet pipe of heat supply condenser 7, the outlet pipe of heat supply condenser 7 is communicated with the water inlet pipe of heat pump 6, and the outlet pipe of heat pump 6 is communicated with heat supply network outlet pipe 10 by heat supply initial station 9; Described Air-cooled Unit connects heat pump 6 by extraction valve 11; The back pressure of described Air-cooled Unit is 33KPa; Described heat pump 6 and the venthole of heat supply condenser 7 are all communicated with the outlet conduit of Air-Cooling Island 4 by condensate valve 12.
The heat supply phase, close the exhaust steam valve A3 that leads to Air-Cooling Island 4, open the exhaust steam valve B5 that leads to heat supply condenser 7 and heat pump 6, open the extraction valve 11 that leads to heat pump 6, Air-cooled Unit back pressure is brought up to 33kPa, 50 DEG C of flow 9000-12000t/h of heat supply network backwater of heat supply network recirculated water put into operation, after entering 7 heat absorptions of heat supply condenser, temperature reaches 68 DEG C, enter heat pump 6, heat pump 6 enters heat supply initial station 9 by the machine or draws gas as the occasion requires and is further heated to 90-110 DEG C after being heated to 80-85 DEG C, then enter after first-degree heating network and the heat exchange of secondary heat supply network retrieval system heat absorption again and form a circulation.After heat supply finishes, open the exhaust steam valve A3 that leads to Air-Cooling Island 4, close towards the exhaust steam valve B5 of heat supply condenser 7 and heat pump 6, close the extraction valve 11 towards heat pump 6, heat supply network recirculated water is out of service, and unit returns to pure condensate operation.
Claims (4)
1. an Air-cooled Unit high back pressure and heat pump united heating system, comprise the Air-cooled Unit being formed by intermediate pressure cylinder (1) and low pressure (LP) cylinder (2), it is characterized in that: the gland steam exhauster of described Air-cooled Unit is by exhaust steam valve A(3) connection Air-Cooling Island (4), and by exhaust steam valve B(5) heat pump (6) and the heat supply condenser (7) of being communicated with in parallel, heat supply network return pipe (8) connects the water inlet pipe of heat supply condenser (7), the outlet pipe of heat supply condenser (7) is communicated with the water inlet pipe of heat pump (6), the outlet pipe of heat pump (6) is communicated with heat supply network outlet pipe (10) by heat supply initial station (9).
2. Air-cooled Unit high back pressure according to claim 1 and heat pump united heating system, is characterized in that: described Air-cooled Unit connects heat pump (6) by extraction valve (11).
3. Air-cooled Unit high back pressure according to claim 1 and heat pump united heating system, is characterized in that: the back pressure of described Air-cooled Unit is 33kPa.
4. Air-cooled Unit high back pressure and heat pump united heating system according to claim 1, is characterized in that: described heat pump (6) and the venthole of heat supply condenser (7) are all communicated with the outlet conduit of Air-Cooling Island (4) by condensate valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410210513.5A CN103953961A (en) | 2014-05-19 | 2014-05-19 | High back pressure and heat pump combined heat supply system for air cooling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410210513.5A CN103953961A (en) | 2014-05-19 | 2014-05-19 | High back pressure and heat pump combined heat supply system for air cooling unit |
Publications (1)
| Publication Number | Publication Date |
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| CN103953961A true CN103953961A (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410210513.5A Pending CN103953961A (en) | 2014-05-19 | 2014-05-19 | High back pressure and heat pump combined heat supply system for air cooling unit |
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| CN (1) | CN103953961A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737230A (en) * | 2016-04-21 | 2016-07-06 | 陈熙荣 | Dual-source complementary multi-net linkage large-temperature-difference residual heat and waste heat energy central heating system |
| CN105737131A (en) * | 2016-03-03 | 2016-07-06 | 陈克秀 | Multi-network linked waste heat energy centralized heating system |
| CN105910455A (en) * | 2016-06-06 | 2016-08-31 | 华北电力大学 | Air cooling high back pressure heat supply system utilizing waste heat of auxiliary machine circulating water |
| CN106642278A (en) * | 2016-10-18 | 2017-05-10 | 王清正 | Heat pump and high back pressure combined heat supply system |
| CN113236380A (en) * | 2021-06-21 | 2021-08-10 | 西安西热节能技术有限公司 | Low-pressure cylinder zero-output coupling heat storage tank's cold unit heat supply system that prevents frostbite |
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| CN202902461U (en) * | 2012-09-19 | 2013-04-24 | 北京创时能源有限公司 | Preposition condenser feeding and retracting system |
| CN203385306U (en) * | 2013-06-08 | 2014-01-08 | 山东泓奥电力科技有限公司 | High-back-pressure energy saving system of air cooling unit |
| CN203478405U (en) * | 2013-09-15 | 2014-03-12 | 张茂勇 | Low-vacuum absorption type composite waste heat recovery ultrahigh temperature difference heat supply network heating system |
| CN203810512U (en) * | 2014-05-19 | 2014-09-03 | 山东泓奥电力科技有限公司 | High backpressure and heat pump combined heating system for air cooling unit |
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2014
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005288414A (en) * | 2004-04-05 | 2005-10-20 | Takuma Co Ltd | Freezing and thawing system and freezing and thawing method |
| CN202768090U (en) * | 2012-09-18 | 2013-03-06 | 北京创时能源有限公司 | Recovery system of dead steam waste heat |
| CN202813574U (en) * | 2012-09-19 | 2013-03-20 | 北京创时能源有限公司 | Heat pump switching system |
| CN202902461U (en) * | 2012-09-19 | 2013-04-24 | 北京创时能源有限公司 | Preposition condenser feeding and retracting system |
| CN203385306U (en) * | 2013-06-08 | 2014-01-08 | 山东泓奥电力科技有限公司 | High-back-pressure energy saving system of air cooling unit |
| CN203478405U (en) * | 2013-09-15 | 2014-03-12 | 张茂勇 | Low-vacuum absorption type composite waste heat recovery ultrahigh temperature difference heat supply network heating system |
| CN203810512U (en) * | 2014-05-19 | 2014-09-03 | 山东泓奥电力科技有限公司 | High backpressure and heat pump combined heating system for air cooling unit |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737131A (en) * | 2016-03-03 | 2016-07-06 | 陈克秀 | Multi-network linked waste heat energy centralized heating system |
| CN105737230A (en) * | 2016-04-21 | 2016-07-06 | 陈熙荣 | Dual-source complementary multi-net linkage large-temperature-difference residual heat and waste heat energy central heating system |
| CN105737230B (en) * | 2016-04-21 | 2018-12-07 | 陈熙荣 | Waste thermal energy central heating system more than a kind of big temperature difference of complementary more net linkages of double source |
| CN105910455A (en) * | 2016-06-06 | 2016-08-31 | 华北电力大学 | Air cooling high back pressure heat supply system utilizing waste heat of auxiliary machine circulating water |
| CN106642278A (en) * | 2016-10-18 | 2017-05-10 | 王清正 | Heat pump and high back pressure combined heat supply system |
| CN113236380A (en) * | 2021-06-21 | 2021-08-10 | 西安西热节能技术有限公司 | Low-pressure cylinder zero-output coupling heat storage tank's cold unit heat supply system that prevents frostbite |
| CN113236380B (en) * | 2021-06-21 | 2022-09-06 | 西安西热节能技术有限公司 | Low-pressure cylinder zero-output coupling heat storage tank's cold unit heating system that prevents frostbite |
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Application publication date: 20140730 |
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