CN203385306U - High-back-pressure energy saving system of air cooling unit - Google Patents

High-back-pressure energy saving system of air cooling unit Download PDF

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Publication number
CN203385306U
CN203385306U CN201320330628.9U CN201320330628U CN203385306U CN 203385306 U CN203385306 U CN 203385306U CN 201320330628 U CN201320330628 U CN 201320330628U CN 203385306 U CN203385306 U CN 203385306U
Authority
CN
China
Prior art keywords
communicated
pressure energy
energy saving
saving system
air cooling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320330628.9U
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Chinese (zh)
Inventor
宋涛
董晔
胡赛群
韩玲
周国华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANDONG HONGAO ELECTRIC POWER TECHNOLOGY Co Ltd
Original Assignee
SHANDONG HONGAO ELECTRIC POWER TECHNOLOGY Co Ltd
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Filing date
Publication date
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Priority to CN201320330628.9U priority Critical patent/CN203385306U/en
Application granted granted Critical
Publication of CN203385306U publication Critical patent/CN203385306U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model belongs to the field of heat exchange systems, and particularly discloses a high-back-pressure energy saving system of an air cooling unit. The high-back-pressure energy saving system of the air cooling unit comprises an air cooling island which is communicated with a low-pressure cylinder via a steam exhaust guide pipe. The high-back-pressure energy saving system is characterized in that a branch pipe of an inlet of a condenser is connected onto the steam exhaust guide pipe in a communicated manner, an outlet of the condenser is communicated with a condensation water system, the condensation water system is communicated with a water outlet pipe of the air cooling island, and a cooling water inlet pipe and a cooling water outlet pipe of the condenser are communicated with a heat-supply network return water pipe of an initial heat supply station in a front-back manner. The high-back-pressure energy saving system has the advantages that the high-back-pressure energy saving system is simple in structure, reasonable in design and flexible in application, waste heat of steam exhaust of the air cooling island can be effectively recycled, energy can be saved, consumption and the running cost can be reduced, a gap of insufficient heat supply capacity can be greatly compensated, and the high-back-pressure energy saving system is suitable to be widely popularized and applied.

Description

Air-cooled Unit high back pressure energy conserving system
(1) technical field
The utility model belongs to the heat-exchange system field, particularly a kind of Air-cooled Unit high back pressure energy conserving system.
(2) background technology
Thermal power plant, for the consumption of saving water resource, adopts Air-cooled Unit to carry out cooling generating steam more.But in power plant's actual moving process; due to the impact that is subject to the factors such as environment temperature; often can't reach designing requirement at high temperature season; after going into operation, Air-cooled Unit environment temperature field changes and exceeds more than 2.0 ℃ than weather station measured temperature, coldly between Fengzhen is greater than 3.0 ℃, when environment temperature surpasses 32 ℃; the consumption coal increases; generating efficiency lowers 10 ~ 30%, even shuts down, and causes the tremendous economic loss.
Simultaneously, the Electric Factory Air-Cooling Island exhaust steam residual heat belongs to low-grade heat source, directly to environment, discharges and causes huge energy waste, and environmental protection is also had to negative effect.
(3) summary of the invention
The utility model, in order to make up the deficiencies in the prior art, provides a kind of simple in structure, energy-saving and cost-reducing Air-cooled Unit high back pressure energy conserving system.
The utility model is achieved by the following technical solution:
A kind of Air-cooled Unit high back pressure energy conserving system, comprise the Air-Cooling Island that is communicated with low pressure (LP) cylinder by the steam discharge conduit, it is characterized in that: connect on described steam discharge conduit and connect being in charge of of condenser import, the condenser outlet is communicated with condensate system, condensate system is communicated with the outlet pipe of Air-Cooling Island, is communicated with the heat supply network return pipe of heat supply initial station before and after the cooling water inlet pipe of condenser and cooling water outlet pipe.
The utility model is under the prerequisite that does not change the Air-Cooling Island present situation, increase a heat supply condenser, in the heating phase, the back pressure of steam turbine improves, utilize the heat supply condenser to reclaim the Air-Cooling Island exhausted spare heat, heat supply network recirculated water is carried out to the one-level heating, then enter former heat supply and carry out at first stop secondary heating, the requirement of heat supply network supply water temperature.
Be provided with the valve between cooling water inlet pipe and cooling water outlet interface tube on described heat supply network return pipe, in the heat supply network return pipe of controlling by valve, the flow direction of water is regulated.
The utility model is simple in structure, reasonable in design, applying flexible, and the exhausted spare heat of effective recycling Air-Cooling Island, energy-saving and cost-reducing, reduce operating cost, greatly make up the breach of heat capacity deficiency, be suitable for wide popularization and application.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is structural representation of the present utility model.
In figure, 1 low pressure (LP) cylinder, 2 Air-Cooling Islands, 3 condensers, 4 condensate systems, 5 cold water inlets, 6 cooling water outlet pipes, 7 heat supply initial stations, 8 heat supply network return pipes, 9 valves.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises the Air-Cooling Island 2 that is communicated with low pressure (LP) cylinder 1 by the steam discharge conduit, connect on described steam discharge conduit and connect being in charge of of condenser 3 imports, condenser 3 outlets are communicated with condensate system 4, condensate system 4 is communicated with the outlet pipe of Air-Cooling Island 2, and the cooling water inlet pipe 5 of condenser 3 and cooling water outlet pipe 6 front and back are communicated with the heat supply network return pipe 8 of heat supply initial station 7; Be provided with the valve 9 between cooling water inlet pipe 5 and cooling water outlet pipe 6 interfaces on described heat supply network return pipe 8.
In the heating phase, the back pressure of steam turbine is increased to 30kPa by intrinsic 15kPa, utilize heat supply condenser 3 to reclaim Air-Cooling Island 2 exhausted spare heats heat supply network recirculated water is carried out to the one-level heating, then enter former heat supply initial station 7 and carry out post bake, meet the requirement of heat supply network supply water temperature.
After the transformation of unit high back pressure, normal operational factor is, back pressure 33kPa, low pressure (LP) cylinder 1 displacement 335t/h, heat supply condenser 3(heat supply network backwater) inflow temperature is 55 ℃, 68 ℃ of heat supply condenser 3 leaving water temperatures, the heat supply network quantity of circulating water is 14276t/h, 104 ℃ of Gateway Station in Heating Network 7 leaving water temperatures.
The boundary condition of operation after the transformation of unit high back pressure:
(1) during back pressure 33Kpa, low pressure (LP) cylinder 1 displacement is not less than 335 t/h, needs to guarantee that low pressure (LP) cylinder 1 steam discharge have enough volume flows.For this boundary condition, the measure that can take is: increase anti-flutter software, monitor at any time operating condition and prevent from entering the flutter district; Once enter the flutter district, automatically be opened into Air-Cooling Island 2 valves under the state of emergency, drop into Air-Cooling Island 2 part rows operations, the unit back pressure reduces, and increases exhaust steam flow, guarantees unit safety.
(2) in the time of the coldest in the winter time, may occur that return water temperature is higher, approach 58 ℃, and, when 58 ℃ of heat supply network return water temperatures, heat supply network recirculated water can't be taken away the heat of turbine discharge, therefore needs to guarantee that the heat supply network return water temperature can be higher than 58 ℃.
In sum, during heating, can be according to the requirement of environment temperature and heat supply company, when the coldest, heat supply condenser 3 all reclaims steam turbine 1 steam discharge, in the situation that In The Initial Period Of Heating, heating finish before or boundary condition appears, can take the mode of Air-Cooling Island 2 and newly-increased condenser 3 paired runnings, in the situation that guarantee that heat supply realizes the multiple electricity of unit, realize the waste heat recovery of unit cold junction, reach energy-saving and cost-reducing effect.

Claims (2)

1. an Air-cooled Unit high back pressure energy conserving system, comprise the Air-Cooling Island (2) that is communicated with low pressure (LP) cylinder (1) by the steam discharge conduit, it is characterized in that: connect on described steam discharge conduit and connect being in charge of of condenser (3) import, condenser (3) outlet is communicated with condensate system (4), condensate system (4) is communicated with the outlet pipe of Air-Cooling Island (2), is communicated with the heat supply network return pipe (8) of heat supply initial station (7) before and after the cooling water inlet pipe (5) of condenser (3) and cooling water outlet pipe (6).
2. Air-cooled Unit high back pressure energy conserving system according to claim 1, is characterized in that: be provided with the valve (9) be positioned between cooling water inlet pipe (5) and cooling water outlet pipe (6) interface on described heat supply network return pipe (8).
CN201320330628.9U 2013-06-08 2013-06-08 High-back-pressure energy saving system of air cooling unit Expired - Fee Related CN203385306U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320330628.9U CN203385306U (en) 2013-06-08 2013-06-08 High-back-pressure energy saving system of air cooling unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320330628.9U CN203385306U (en) 2013-06-08 2013-06-08 High-back-pressure energy saving system of air cooling unit

Publications (1)

Publication Number Publication Date
CN203385306U true CN203385306U (en) 2014-01-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320330628.9U Expired - Fee Related CN203385306U (en) 2013-06-08 2013-06-08 High-back-pressure energy saving system of air cooling unit

Country Status (1)

Country Link
CN (1) CN203385306U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103953961A (en) * 2014-05-19 2014-07-30 山东泓奥电力科技有限公司 High back pressure and heat pump combined heat supply system for air cooling unit
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103953961A (en) * 2014-05-19 2014-07-30 山东泓奥电力科技有限公司 High back pressure and heat pump combined heat supply system for air cooling unit
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

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140108

Termination date: 20200608

CF01 Termination of patent right due to non-payment of annual fee