CN201196105Y - Recirculation cooling water system for thermoelectric generating set - Google Patents
Recirculation cooling water system for thermoelectric generating set Download PDFInfo
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- CN201196105Y CN201196105Y CNU2008200530099U CN200820053009U CN201196105Y CN 201196105 Y CN201196105 Y CN 201196105Y CN U2008200530099 U CNU2008200530099 U CN U2008200530099U CN 200820053009 U CN200820053009 U CN 200820053009U CN 201196105 Y CN201196105 Y CN 201196105Y
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- circulating water
- water
- vapour condenser
- water pump
- circulating
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Abstract
A circulating cooling water system for thermal power generating units comprises at least two cooling towers corresponding to the condensers of a generator and a circulating water pump unit, wherein the water outlet of each cooling tower is connected with the inlet of the circulating water pump unit, the outlet of the circulating water pump unit is connected with one end of the condenser via at least two condenser circulating water inlet pipes, the another end of the condenser is connected with the water inlet of the cooling tower via at least two condenser circulating water outlet pipes, the two or more condenser circulating water inlet pipes are connected by a first connection pipe, and the two or more condenser circulating water outlet pipes are connected by a second connection pipe. The circulating cooling water system for thermal power generating units has simple and compact structure and low cost, and can reduce energy consumption and improve heat utilization efficiency.
Description
Technical field
The utility model is mainly concerned with the steam power plant field, refers in particular to a kind of thermal power generation unit recirculating cooling water system.
Background technique
In the prior art, in thermal power generation was produced, in order to improve the thermal efficiency of unit, the way of taking to improve the steam initial conditions and reduce exhaust steam pressure as far as possible in allowed band in service was raised the efficiency.Because steam parameter can only be moved under nominal parameter by the restriction of metallic material, can't significantly improve at present, therefore improving the thermal efficiency by the reduction exhaust pressure will be an effective scheme. it is then relevant closely with the recirculated cooling water of thermal power unit condenser how to reduce exhaust steam pressure.
At present, when as long as there is the quantity of two and two even-multiple in the thermal power plant with the unit of capacity, the design of the recirculating cooling water system of steam turbine is generally adopted and is enlarged unit system, so-called expansion in the circulation that unit system is per two units has contact pipeline and communicating door in the circulating water pump outlet, in service communicating door is left, make the quantity of circulating water of two machines reach balance, load and only to move three when high and follow pump and come recirculated cooling water for two machines, reduce one and follow pump operation, reach the purpose that improves Economy thereby reduce the station-service electric weight.This kind method of operation is less even inapplicable when stopping transport at certain unit load, though the low unit condenser side circulating water intake gate of load can be turned down, the corresponding cooling water inflow of getting back to its cooling tower also reduces, and the function of cooling tower is performance fully.
And be used for the cooling tower of cooling circulating water, and its inside is diaphragm type mostly, the characteristics of diaphragm type filler are: when water flow through filler, the surface area ratio of water and air contact heat-exchanging was more fixing; Its surface area does not have much variations when the water yield increases, under the constant situation of water temperature if the flow of water increases, because heat exchange air quantity and temperature thereof do not have big variation, the then corresponding water temperature that falls into catch basin will raise, the recirculated cooling water that is vapour condenser is gone into the coolant-temperature gage rising, the exhaust steam pressure of vapour condenser is raise, cause the Economy of whole unit to descend.
The model utility content
Problem to be solved in the utility model just is: at the technical problem that prior art exists, the utility model provides a kind of simple and compact for structure, with low cost, thermal power generation unit recirculating cooling water system that can cut down the consumption of energy, improve efficiency of utilization greatly.
For solving the problems of the technologies described above, the solution that the utility model proposes is: a kind of thermal power generation unit recirculating cooling water system, it is characterized in that: it comprises two or more cooling towers corresponding with the generator set vapour condenser and circulating water pump group, the water outlet of each cooling tower links to each other with the entry end of circulating water pump group, the outlet end of circulating water pump group links to each other with an end of vapour condenser by the vapour condenser circulating water water inlet pipe more than two or two respectively, the other end of vapour condenser links to each other with the water inlet of cooling tower by the vapour condenser circulating water outlet pipe more than two or two, link to each other by first liaison tube between the described vapour condenser circulating water water inlet pipe more than two or two, described vapour condenser circulating water outlet pipe more than two or two links to each other by second liaison tube.
Described first liaison tube is provided with the first modulating valve group.
Described second liaison tube is provided with the second modulating valve group.
Described circulating water pump group comprises the two or more circulating water pump that are installed in the water chamber, and described water storage partition goes out separately independently water cavity, and each circulating water pump lays respectively in the water cavity, is provided with adjustable valve plate between the adjacent water cavity.
Compared with prior art, advantage of the present utility model just is: when in a plurality of units certain corresponding vapour condenser and cooling tower also will be stopped transport in the original system when stopping transport, the cooling tower of stopping transport is not at this moment brought into play its function; As long as the second modulating valve group on second liaison tube that will newly install additional in the new circulation of the utility model is left, cool off the circulating water of a machine with two cooling towers, the function of stoppage in transit cooling tower is brought into play, the circulating water temperature of operation vapour condenser is even lower, to reach the purpose that improves the operation unit economy.
Description of drawings
Fig. 1 is a structural principle schematic representation of the present utility model.
Marginal data
1, first cooling tower 2, second cooling tower
3, circulating water pump group 4, first vapour condenser
5, second vapour condenser 6, vapour condenser circulating water water inlet pipe
7, vapour condenser circulating water outlet pipe 8, first liaison tube
9, second liaison tube 10, the first modulating valve group
11, the second modulating valve group 12, water chamber
13, circulating water pump 14, water cavity
15, adjustable valve plate
Embodiment
Below with reference to accompanying drawing and instantiation the utility model is described in further details.
Thermal power generation unit recirculating cooling water system of the present utility model, it comprises two or more cooling towers corresponding with the generator set vapour condenser and circulating water pump group, the water outlet of each cooling tower links to each other with the entry end of circulating water pump group, the outlet end of circulating water pump group links to each other with an end of vapour condenser by the vapour condenser circulating water water inlet pipe 6 more than two or two respectively, the other end of vapour condenser links to each other with the water inlet of cooling tower by the vapour condenser circulating water outlet pipe 7 more than two or two, link to each other by first liaison tube 8 between the vapour condenser circulating water water inlet pipe 6 more than two or two, the vapour condenser circulating water outlet pipe 7 more than two or two links to each other by second liaison tube 9.
As shown in Figure 1, present embodiment is an example with two vapour condenser and corresponding with it two cooling towers that are provided with, with first vapour condenser 4 and corresponding respectively first cooling tower 1 and second cooling tower 2 of being provided with of second vapour condenser 5, the water outlet of first cooling tower 1 and second cooling tower 2 links to each other with the entry end of circulating water pump group 3 respectively, circulating water pump group 3 comprises the two or more circulating water pump 13 that are installed in the water chamber 12, be separated out separately independently water cavity 14 between in the water chamber 12, each circulating water pump 13 lays respectively in the water cavity 14, be provided with adjustable valve plate 15 between the adjacent water cavity 14, be used for allocating the co-operation between each circulating water pump 13.The outlet end of circulating water pump group 3 links to each other with second vapour condenser 5 with first vapour condenser 4 by two vapour condenser circulating water water inlet pipes 6 respectively, and the water outlet of first vapour condenser 4 and second vapour condenser 5 links to each other by the water inlet of two vapour condenser circulating water outlet pipes 7 with first cooling tower 1 and second cooling tower 2 respectively.Wherein, link to each other by first liaison tube 8 between two vapour condenser circulating water water inlet pipes 6, link to each other by second liaison tube 9 between two vapour condenser circulating water outlet pipes 7.In preferred embodiment, can on first liaison tube 8, be provided with the first modulating valve group 10, on second liaison tube 9, be provided with the second modulating valve group 11.
Working principle: the fired power generating unit recirculating cooling water system is when a certain unit outage at present, and its corresponding cooling tower does not play a role.If installed second liaison tube 9 and the second modulating valve group 11 among the figure additional, it is put into operation, then be equivalent to increase the film-cooled heat of cooling tower, promptly enabling the same loop water pump, consume under the situation of identical station service, the film-cooled heat of cooling tower but raises and is twice, and cooling performance rises 2 times, and vapour condenser circulating water inlet temperature is reduced greatly to improve unit economy.Improve unit economy and optimize improved circulation and be equally applicable to other bigger capacity units such as 600MW and 1000MW, as long as circulation is for enlarging the operation of unit system, having cooling tower and all can optimize improvement to improve Economy.
Claims (5)
1. thermal power generation unit recirculating cooling water system, it is characterized in that: it comprises two or more cooling towers corresponding with the generator set vapour condenser and circulating water pump group, the water outlet of each cooling tower links to each other with the entry end of circulating water pump group, the outlet end of circulating water pump group links to each other with an end of vapour condenser by the vapour condenser circulating water water inlet pipe more than two or two respectively, the other end of vapour condenser links to each other with the water inlet of cooling tower by the vapour condenser circulating water outlet pipe more than two or two, link to each other by first liaison tube between the described vapour condenser circulating water water inlet pipe more than two or two, described vapour condenser circulating water outlet pipe more than two or two links to each other by second liaison tube.
2. thermal power generation unit recirculating cooling water system according to claim 1 is characterized in that: described first liaison tube is provided with first modulating valve.
3. thermal power generation unit recirculating cooling water system according to claim 1 and 2 is characterized in that: described second liaison tube is provided with second modulating valve.
4. thermal power generation unit recirculating cooling water system according to claim 1 and 2, it is characterized in that: described circulating water pump group comprises the two or more circulating water pump that are installed in the water chamber, described water storage partition goes out separately independently water cavity, each circulating water pump lays respectively in the water cavity, is provided with adjustable valve plate between the adjacent water cavity.
5. thermal power generation unit recirculating cooling water system according to claim 3, it is characterized in that: described circulating water pump group comprises the two or more circulating water pump that are installed in the water chamber, described water storage partition goes out separately independently water cavity, each circulating water pump lays respectively in the water cavity, is provided with adjustable valve plate between the adjacent water cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200530099U CN201196105Y (en) | 2008-04-29 | 2008-04-29 | Recirculation cooling water system for thermoelectric generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200530099U CN201196105Y (en) | 2008-04-29 | 2008-04-29 | Recirculation cooling water system for thermoelectric generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201196105Y true CN201196105Y (en) | 2009-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200530099U Expired - Fee Related CN201196105Y (en) | 2008-04-29 | 2008-04-29 | Recirculation cooling water system for thermoelectric generating set |
Country Status (1)
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| CN (1) | CN201196105Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322747A (en) * | 2011-08-01 | 2012-01-18 | 山西省电力勘测设计院 | Indirect cooling system of header system consisting of two turbines and one tower |
| CN103017563A (en) * | 2012-12-09 | 2013-04-03 | 河北建投国融能源服务股份有限公司 | Circulating water running system and running method thereof |
| CN103162573A (en) * | 2013-03-25 | 2013-06-19 | 中国能源建设集团安徽省电力设计院 | Parallel operation system of cooling towers with different areas |
| CN103711677A (en) * | 2013-12-25 | 2014-04-09 | 大唐贵州发耳发电有限公司 | Cooling water pipe structure of generator set |
| CN103743287A (en) * | 2013-11-26 | 2014-04-23 | 中国电力工程顾问集团中南电力设计院 | High-level water collection cooling water circulation system with rear-mounted water pump and circulation method |
| CN108519001A (en) * | 2018-03-19 | 2018-09-11 | 华能国际电力股份有限公司福州电厂 | A kind of power plant's open circulating water contact common header system and its control method |
| CN108716232A (en) * | 2018-06-29 | 2018-10-30 | 神华国华广投（柳州）发电有限责任公司 | A kind of circulating water supply system |
| CN114562840A (en) * | 2022-02-24 | 2022-05-31 | 广州中电荔新热电有限公司 | Cooling system |
-
2008
- 2008-04-29 CN CNU2008200530099U patent/CN201196105Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322747A (en) * | 2011-08-01 | 2012-01-18 | 山西省电力勘测设计院 | Indirect cooling system of header system consisting of two turbines and one tower |
| CN103017563A (en) * | 2012-12-09 | 2013-04-03 | 河北建投国融能源服务股份有限公司 | Circulating water running system and running method thereof |
| CN103162573A (en) * | 2013-03-25 | 2013-06-19 | 中国能源建设集团安徽省电力设计院 | Parallel operation system of cooling towers with different areas |
| CN103743287A (en) * | 2013-11-26 | 2014-04-23 | 中国电力工程顾问集团中南电力设计院 | High-level water collection cooling water circulation system with rear-mounted water pump and circulation method |
| CN103743287B (en) * | 2013-11-26 | 2016-07-20 | 中国电力工程顾问集团中南电力设计院有限公司 | The rearmounted high position of water pump receives water cooling water recirculation system and round-robin method |
| CN103711677A (en) * | 2013-12-25 | 2014-04-09 | 大唐贵州发耳发电有限公司 | Cooling water pipe structure of generator set |
| CN103711677B (en) * | 2013-12-25 | 2016-03-30 | 大唐贵州发耳发电有限公司 | A kind of generator unit cooling water pipe structure |
| CN108519001A (en) * | 2018-03-19 | 2018-09-11 | 华能国际电力股份有限公司福州电厂 | A kind of power plant's open circulating water contact common header system and its control method |
| CN108716232A (en) * | 2018-06-29 | 2018-10-30 | 神华国华广投（柳州）发电有限责任公司 | A kind of circulating water supply system |
| CN114562840A (en) * | 2022-02-24 | 2022-05-31 | 广州中电荔新热电有限公司 | Cooling system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090218 |