CN109357560A - A kind of closed-type circulating cooling water system and method for commissioning - Google Patents
A kind of closed-type circulating cooling water system and method for commissioning Download PDFInfo
- Publication number
- CN109357560A CN109357560A CN201811317354.3A CN201811317354A CN109357560A CN 109357560 A CN109357560 A CN 109357560A CN 201811317354 A CN201811317354 A CN 201811317354A CN 109357560 A CN109357560 A CN 109357560A
- Authority
- CN
- China
- Prior art keywords
- cooling water
- water
- closed
- pump
- circulating 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.)
- Pending
Links
- 239000000498 cooling water Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000003044 adaptive effect Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
Abstract
A kind of closed-type circulating cooling water system and method for commissioning, the system comprises the plate heat exchangers that at least two connect together, the cooling water inlet of plate heat exchanger connects each user's water water source with return water main pipe by enclosed water pump, the cooling water outlet of plate heat exchanger is connected to a water main pipe, is connected to each user through flow control valve；The enclosed water pump is pumped and is connect by three closed-type circulating cooling waters and formed；In the return water main pipe and it is connected to closed-type circulating cooling water expansion tank；The progress control method is: switching the operating statuses of three pumps in actual motion according to temperature and system status, when summer high temperature comes into operation 100% volumetric pump, and season in spring and autumn comes into operation 67% volumetric pump, and winter and unit outage subsidiary engine come into operation 33% volumetric pump during running；The features such as it has system composition simple, and easy to use and operate, equipment investment is low, energy-saving effect is obvious, can effectively improve closed water system to various operating condition adaptive faculties, can be by lesser investment expense realization energy saving of system target.
Description
Technical field
The present invention relates to a kind of closed-type circulating cooling water system and method for commissioning, especially a kind of to be used for thermal power generation
The big-and-middle low capacity closed cooling water system and method for commissioning of factory, belong to thermal power plant closed cycle cooling technology field.
Background technique
Enclosed cooling water pump in existing thermal power plant closed circuit cooling system is firepower for conveying closed-up water
Each equipment in power plant provides cooling.Most of thermal power plant's closed-up water pump capacity is according to extreme high temperature in summer operating condition as design work
Condition, if 2 100% capacity pumps the using and the reserved, 2 enclosed water pumps are in parallel, and water inlet end connects each use by return water main pipe
Family water water source, water outlet are separately connected the cooling water inlet of A plate heat exchanger and B plate heat exchanger；And the A plate-type heat-exchange
The cooling water outlet of device and B plate heat exchanger is connected to a water main pipe, is connected to each user through flow control valve；Above-mentioned system
After the configuration of system is in winter, nighttime temperature is lower or compressor emergency shutdown during ancillary equipment operation when, operating flux and raise
Journey substantially exceeds actual needs, causes energy waste.
Summary of the invention
It is an object of the invention to overcome the shortcomings of the prior art, and it is simple to provide a kind of system composition, uses behaviour
Facilitate, equipment investment is low, energy-saving effect is obvious, can effectively improve closed water system to various operating condition adaptive faculties, can pass through
Lesser investment expense realizes the closed-type circulating cooling water system and method for commissioning of energy saving of system target.
The object of the present invention is achieved by the following technical solutions, and a kind of closed-type circulating cooling water system, it includes
The cooling water inlet of at least two plate heat exchangers to connect together, plate heat exchanger is connected by enclosed water pump and return water main pipe
Each user's water water source is connect, the cooling water outlet of plate heat exchanger is connected to a water main pipe, is connected to through flow control valve
Each user；The enclosed water pump is pumped and is connect by three closed-type circulating cooling waters and formed；In the return water main pipe and it is connected to and closes
Formula recirculated cooling water expansion tank.
As preferred: the design capacity of three closed-type circulating cooling waters pump be respectively system design capacity 100%,
67%, 33%, rated lift is respectively 100%, 80%, the 80% of system rated lift；Wherein the system design capacity is according to machine
The 110% of the maximum cooling water inflow of group, system rated lift according to system pipeline resistance under maximum cooling water inflow, and separately plus 20% it is abundant
Amount.
A kind of method for commissioning of such as closed-type circulating cooling water system, the progress control method is: actual motion
The middle operating statuses for switching three pumps according to temperature and system status, when summer high temperature, come into operation 100% volumetric pump, and season in spring and autumn is thrown
With 67% volumetric pump, come into operation 33% volumetric pump during winter and the operation of unit outage subsidiary engine；
Come into operation 67% or 100% volumetric pump respectively in 33% or 67% volumetric pump trouble hunting, and when 100% volumetric pump trouble hunting is same
When put into 33% and 67% volumetric pump.
The present invention has the following technical effect that
First is that equipment investment is low, and for every 1000MW coal unit, this patent scheme enclosed water pump and installation civil engineering total cost
About 1,280,000, only increase by 80,000 yuan than conventional 2 1,200,000 yuan of 100% capacity pumps system investments.
Second is that energy-saving effect is obvious, through calculating, for every 1000MW coal unit, the present invention program compared with the ratio between conventional 2
100% capacity pumps system of platform, year save 52.3 ten thousand yuan of operation power charge.
Third is that operation and maintenance are easy, since three pumps are in parallel and capacity is different, other flow tune such as not set frequency conversion, speed regulation
Section measure, operation and maintenance are very easy.
The present invention has system composition simple, and easy to use and operate, equipment investment is low, energy-saving effect is obvious, can be effective
Closed water system is improved to various operating condition adaptive faculties, can be by lesser investment expense realization energy saving of system target the features such as.
Detailed description of the invention
Fig. 1 is big-and-middle low capacity closed-type circulating cooling water system schematic diagram of the invention.
Specific embodiment
Below in conjunction with attached drawing and example, the present invention will be described in detail: a kind of closed-type circulating cooling water system, it is wrapped
The A plate heat exchanger 1 and B plate heat exchanger 2 that at least two connect together are included, the cooling water inlet 3 of plate heat exchanger 1,2 is logical
It crosses enclosed water pump and return water main pipe 4 connects each user's water water source 5, the cooling water outlet 6 of plate heat exchanger 1,2 is connected to one
Water main pipe 7 is connected to each user 9 through flow control valve 8；The enclosed water pump is pumped and is connect by three closed-type circulating cooling waters
Composition, including A closed-type circulating cooling water pump 10, B closed-type circulating cooling water pump 11 and C closed-type circulating cooling water pump 12；Described
In return water main pipe 4 and it is connected to closed-type circulating cooling water expansion tank 13.
The design capacity that three closed-type circulating cooling waters of the present invention pump 10,11,12 is respectively system design capacity
100%, 67%, 33%, rated lift is respectively 100%, 80%, the 80% of system rated lift；The wherein system design capacity
According to the 110% of unit maximum cooling water inflow, system rated lift adds according to system pipeline resistance under maximum cooling water inflow, and separately
20% allowance.
A kind of method for commissioning of closed-type circulating cooling water system as described above, the progress control method is: practical fortune
Switch the operating statuses of three pumps in row according to temperature and system status, when summer high temperature comes into operation 100% volumetric pump, season in spring and autumn
Come into operation 67% volumetric pump, and come into operation 33% volumetric pump during winter and the operation of unit outage subsidiary engine；
Come into operation 67% or 100% volumetric pump respectively in 33% or 67% volumetric pump trouble hunting, and when 100% volumetric pump trouble hunting is same
When put into 33% and 67% volumetric pump.
Embodiment: in Fig. 1, three enclosed water pumps A, B and C are in parallel, and capacity is respectively 100%, 67% and 33%, operate normally
When according to circumstances come into operation one.
Claims (3)
1. a kind of closed-type circulating cooling water system, it includes at least two plate heat exchangers to connect together, plate heat exchanger
Cooling water inlet each user's water water source is connected with return water main pipe by enclosed water pump, the cooling water outlet of plate heat exchanger is simultaneously
It is connected to a water main pipe, is connected to each user through flow control valve；It is characterized in that the enclosed water pump is by three encloseds
Circulating cooling water pump simultaneously connects composition；In the return water main pipe and it is connected to closed-type circulating cooling water expansion tank.
2. closed-type circulating cooling water system according to claim 1, it is characterised in that three closed-type circulating cooling waters
The design capacity of pump is respectively 100%, 67%, the 33% of system design capacity, and rated lift is respectively system rated lift
100%,80%,80%；Wherein the system design capacity according to the 110% of unit maximum cooling water inflow, press by system rated lift
According to system pipeline resistance under maximum cooling water inflow, and separately plus 20% allowance.
3. a kind of method for commissioning of closed-type circulating cooling water system as claimed in claim 1 or 2, it is characterised in that the operation
Control method is: switching the operating statuses of three pumps in actual motion according to temperature and system status, when summer high temperature comes into operation
100% volumetric pump, season in spring and autumn come into operation 67% volumetric pump, and winter and unit outage subsidiary engine come into operation 33% volumetric pump during running；
Come into operation 67% or 100% volumetric pump respectively in 33% or 67% volumetric pump trouble hunting, and when 100% volumetric pump trouble hunting is same
When put into 33% and 67% volumetric pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811317354.3A CN109357560A (en) | 2018-11-07 | 2018-11-07 | A kind of closed-type circulating cooling water system and method for commissioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811317354.3A CN109357560A (en) | 2018-11-07 | 2018-11-07 | A kind of closed-type circulating cooling water system and method for commissioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109357560A true CN109357560A (en) | 2019-02-19 |
Family
ID=65344449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811317354.3A Pending CN109357560A (en) | 2018-11-07 | 2018-11-07 | A kind of closed-type circulating cooling water system and method for commissioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109357560A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087039A (en) * | 2021-11-15 | 2022-02-25 | 山东日照发电有限公司 | Energy-saving improvement method for cooling mode of closed water heat exchanger after unit shutdown |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201401882Y (en) * | 2009-04-14 | 2010-02-10 | 陈晓京 | Chilled water energy-saving and circulating system for central air conditioner |
| CN103075854A (en) * | 2013-01-08 | 2013-05-01 | 华电电力科学研究院 | Cooling water circulation pump system |
| CN103115520A (en) * | 2013-02-28 | 2013-05-22 | 范昌海 | Assembly and working condition detection method for circulating pumps in water cooling system |
| CN203810598U (en) * | 2014-04-11 | 2014-09-03 | 中南建筑设计院股份有限公司 | Primary pump multi-condition variable flow system |
| CN105841408A (en) * | 2016-05-19 | 2016-08-10 | 中国能源建设集团广东省电力设计研究院有限公司 | Closed-cycle cooling water energy-saving driving system and method |
| CN209445855U (en) * | 2018-11-07 | 2019-09-27 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of closed-type circulating cooling water system |
-
2018
- 2018-11-07 CN CN201811317354.3A patent/CN109357560A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201401882Y (en) * | 2009-04-14 | 2010-02-10 | 陈晓京 | Chilled water energy-saving and circulating system for central air conditioner |
| CN103075854A (en) * | 2013-01-08 | 2013-05-01 | 华电电力科学研究院 | Cooling water circulation pump system |
| CN103115520A (en) * | 2013-02-28 | 2013-05-22 | 范昌海 | Assembly and working condition detection method for circulating pumps in water cooling system |
| CN203810598U (en) * | 2014-04-11 | 2014-09-03 | 中南建筑设计院股份有限公司 | Primary pump multi-condition variable flow system |
| CN105841408A (en) * | 2016-05-19 | 2016-08-10 | 中国能源建设集团广东省电力设计研究院有限公司 | Closed-cycle cooling water energy-saving driving system and method |
| CN209445855U (en) * | 2018-11-07 | 2019-09-27 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of closed-type circulating cooling water system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087039A (en) * | 2021-11-15 | 2022-02-25 | 山东日照发电有限公司 | Energy-saving improvement method for cooling mode of closed water heat exchanger after unit shutdown |
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