CN206450129U - Power station auxiliary water Expanding Unit Element System dry and wet combines air cooling system - Google Patents
Power station auxiliary water Expanding Unit Element System dry and wet combines air cooling system Download PDFInfo
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- CN206450129U CN206450129U CN201720147708.9U CN201720147708U CN206450129U CN 206450129 U CN206450129 U CN 206450129U CN 201720147708 U CN201720147708 U CN 201720147708U CN 206450129 U CN206450129 U CN 206450129U
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Abstract
The utility model is that power station auxiliary water Expanding Unit Element System dry and wet combines air cooling system, include at least 2 groups unit style dry and wet joint cooling tower groups, its arrival end is connected with butterfly valve distribution system, port of export pipeline connects Controlling Auxiliaries in Power Plants equipment after converging, Controlling Auxiliaries in Power Plants equipment is connected by main pipe with butterfly valve distribution system, it is above-mentioned that loop is integrally formed, the finned air cooler and evaporating air cooler of series connection are included in every group of tower group, evaporating air cooler enters, outlet sets butterfly valve group respectively, set before finned air cooler entrance with the exit of evaporating air cooler exit butterfly valve group and connect the first pipeline, the first branch line is set on first pipeline, it is communicated in before the butterfly valve group of evaporating air cooler import, the butterfly valve of control circulation is set on first line entry and the first branch line respectively, the utility model arranged connection in series-parallel+tower group in realize that the accurate multi-state for combining air cooling system to subsidiary engine dry and wet is adjusted by way of butterfly valve switching and temperature control regulation, so as to reach maximized purpose of saving water and energy.
Description
Technical field
The utility model is related to the system arrangement that power station auxiliary water Expanding Unit Element System dry and wet combines air cooling, mainly should
Subsidiary engine circulating cooling system for thermal power plant.
Background technology
Traditional clammy evaporator or pure air cooler typically use unit style or expanding unit, as shown in figure 1, some skies
Cooler is in parallel, and such structure, and self-control means are limited, best regulative mode be exactly cut off some cooling unit or
Some cooling unit is opened, regulating measure is relatively single, and intelligence degree is not high.
With the relative surplus of electric power, the operating load change of power plant may more greatly, single unit operation or 2 units
The probability that underrun occurs is continued to increase, and is needed more operating conditions to give for subsidiary engine cooling system and is considered.
Utility model content
The technical problem that the utility model is solved a kind of adapts to Controlling Auxiliaries in Power Plants multi-state switching regulation, with suitable providing
The power station auxiliary water Expanding Unit Element System dry and wet of unit working conditions change is answered to combine air cooling system.
The technological means that the utility model is used is as follows.
A kind of power station auxiliary water Expanding Unit Element System dry and wet combines air cooling system, is done comprising at least 2 groups unit styles in parallel
Wet joint cooling tower group, the arrival end of each dry and wet joint cooling tower group is connected with butterfly valve distribution system, and port of export pipeline converges
Controlling Auxiliaries in Power Plants equipment is connected after conjunction, Controlling Auxiliaries in Power Plants equipment is connected by main pipe with butterfly valve distribution system, above-mentioned overall connection is formed
One loop；The finned air cooler and evaporating air cooler of series connection, evaporation are included in every group of dry and wet joint cooling tower group
The import and export of formula air cooler is respectively arranged with butterfly valve group, with evaporating air cooler exit butterfly valve before finned air cooler entrance
The exit of group sets and sets the first branch line on the first pipeline of connection, first pipeline, and it is communicated in evaporating air cooler
Before the butterfly valve group import of import；The butterfly valve of control circulation is respectively equipped with first line entry and the first branch line.
Further, it can be interconnected, be set on the pipeline of the connection comprising 2 groups of dry and wet joint cooling tower groups, its 2 water inlets
The butterfly valve of main pipe the 3rd is put, 2 main pipes are exported from Controlling Auxiliaries in Power Plants equipment, 2 main pipes connect 2 groups of dry and wet joint cooling tower groups respectively
Water inlet, the butterfly valve of main pipe first and the butterfly valve of main pipe second are set respectively in 2 main pipes.
Butterfly valve group is set respectively at the import and export of the finned air cooler.
Before first pipeline and/or afterwards, pressure transmitter and temperature transmitter, finned air cooler and evaporation are set
Axial flow blower and cooling water pump are set on formula air cooler, the two is all connected with temperature transmitter and transmits temperature signal by it.
Having the beneficial effect that produced by the utility model.
1）The switch transition of series operation and the parallel running of dry air cooling and devaporizer, root are realized by coupling cock
Change according to unit load and outside air temperature so that whole Controlling Auxiliaries in Power Plants cooling water system realizes series-parallel two kinds of possible moulds
The operation of formula.
2）Any excision can be needed according to operating mode or maintenance or open the cooling unit of a certain form, realized with negative
Lotus and ambient temperature are switched over to the operational mode of cooling system.
3）Cooling water pump uses variable frequency pump or double speed pump, is provided with temperature transmitter in cooling tower Inlet and outlet water side, passes through temperature
Signal controls rotating speed, the water of spray system and the start and stop of blower fan, the switch of coupling cock etc., so as to realize the fortune of various modes
OK.
4）Dry and wet of the present utility model combines air cooling system as a kind of novel combination type cooling system, passes through connection in series-parallel cloth
Put+UNICOM's Vavle switching and temperature control regulation mode can realize the switching of more multi-state, to adapt to the change of unit operating mode, make
More line style must be adjusted.
Brief description of the drawings
Fig. 1 is the arrangement flow chart of existing air-cooler system.
Fig. 2 combines the technology arrangement flow chart of cooling system for the thermal power plant subsidiary engine water dry and wet in the utility model.
Embodiment
The utility model protects a kind of power station auxiliary water Expanding Unit Element System dry and wet joint air cooling system, comprising parallel connection extremely
Few 2 groups of unit style dry and wets joint cooling tower groups, the arrival end of each dry and wet joint cooling tower group with the phase of butterfly valve distribution system 3
Even, the port of export pipeline of at least 2 groups dry and wet joint cooling tower groups is passed through Controlling Auxiliaries in Power Plants equipment 4 after converging by house steward 41, electricity
Factory's subsidiary engine equipment 4 is connected by main pipe with butterfly valve distribution system 3, and above-mentioned overall connection forms a loop.
Whether above-mentioned at least 2 groups dry combinatorial cooling tower systems system in parallel is opened by butterfly valve distribution system 3, and control makes
The quantity of dry combinatorial cooling tower group.
Below to specific knot by taking the embodiments with 2 groups of parallel connections of dry and wets joint cooling tower systems 1,2 shown in Fig. 2 as an example
Structure and illustrated using flow.The embodiment is using 2 × 350MW fired power generating units construction drawing design as support.
Dry combinatorial cooling tower systems 1（2）Finned air cooler 15 comprising series connection（25）With evaporating air cooler 16
（26）, it can regulate and control the mode that use according to different use demands, is respectively arranged with the import and export of finned air cooler 15
First, second butterfly valve group 11,12（21、11）, the import and export of evaporating air cooler 16 is respectively arranged with the three, the 4th butterfly valve groups
13、14（23、24）.In the first butterfly valve group 11（21）Porch and the 4th butterfly valve group 14（24）Exit sets the first pipe of connection
Road 171（271）, the first branch line 172 is set thereon（272）, its other end is communicated in second, third butterfly valve group 12,13（22、
23）Between.First pipeline 171（271）Arrival end and the first branch line 172（272）On be respectively equipped with control circulation the 5th,
6th butterfly valve 173,174（273、274）.By controlling the keying of different butterfly valve and butterfly valve groups, the side of air cooler enabled is controlled
Formula.It can again be gone before the access of supervisor 18,28 that dry and wet combines cooling tower group converges house steward 41 and electric butterfly valve is set.
Above-mentioned butterfly valve control system 3, includes the parallel connection of control tower group, the main pipe butterfly valve whether opened.Specifically, from power plant
The main pipe of subsidiary engine equipment output is the main pipe 52,53 in 2, i.e. figure, and it connects 2 groups of dry and wets and combines cooling tower group 1,2 respectively
Water inlet, while being interconnected between 2 water inlets, centre is provided with the butterfly valve 33 of main pipe the 3rd.Set respectively in main pipe 51,52 female
The first butterfly valve of pipe 31 and the second butterfly valve of main pipe 32.
Combine the supervisor 18 of cooling tower group in dry and wet（28）On, the first pipeline 171 as shown（271）Before and afterwards,
Settable pressure transmitter and temperature transmitter.Axial flow blower is set on finned air cooler and evaporating air cooler, the axle stream wind
Machine is connected the parameter for controlling cooling procedure by temperature transmitter.Above-mentioned butterfly valve can use electric butterfly valve, can be according to system needs
Automatically control its keying.
Whole subsidiary engine water Expanding Unit Element System dry and wet joint air cooling system is constituted including three parts in the utility model, respectively
For subsidiary engine circulating pump system, subsidiary engine equipment and pipe-line system, dry and wet joint cooling tower systems.Whole system uses Expanding Unit Element System
Form, subsidiary engine water circulating pump is standby with 1 using 2, and water pump preferably uses variable frequency pump.Water supply side is supplied water using train unit system, backwater side
Using piping-main scheme backwater, it is ensured that the balance of whole auxiliary system forcing press temperature.
Illustrate the butterfly valve opening/shutting mode under different operating modes to illustrate embodiment below.
Operating mode one：2 unit oeprations at full load, electric butterfly valve 33 is closed.
During the hot season, the first butterfly valve 173,273 and the second butterfly valve 174 and 274 are closed, first to fourth butterfly valve group 11-14,
21-24 is opened, now finned air cooler 15（Dry air cooling）With evaporating air cooler 16（Clammy evaporator）Series operation, simultaneously
Finned air cooler 25 and the series operation of evaporating air cooler 26, evaporating air cooler 16,26 is according to the temperature of temperature transmitter
Signal controls water spray, to realize that outlet water temperature meets design load.
Third and fourth butterfly valve group 13,14 and 23,24 is closed during cold season, while the 6th butterfly valve 174 and 274 is opened, realizes fin
Pipe air cooler 15 and 25（Dry air cooling）Independent operating.The butterfly valve 33 of main pipe the 3rd can also open the dry air cooling of the system of realization and through transport
OK.
Operating mode two：Single unit is run or 2 machine underrun, and electric butterfly valve 33 is opened.
Tower group 1 and the parallel running of tower group 2 during the hot season, control whether to open evaporating air cooler depending on temperature transmitter signal
Water-spray system and axial fan system.Multiple combinations operating mode may be present herein, for example close 13,14,23,24, open 173,
174th, 273,274, now pure dry air cooling parallel running；32,33,173,174 are closed, 13,14 are opened, now single dry air cooling 15 of set
Cold 16 operation of cascade evaporation；And control axial flow blower start and stop etc..
During cold season, switched by the first butterfly valve of main pipe 31 with the second butterfly valve of main pipe 32, realize single dry air cooling independent operating of set,
Or 2 sets of dry air cooling parallel runnings, it can be carried out by the temperature signal of temperature transmitter to electric butterfly valve and blower fan system
Automatically switch and realize.
Above-mentioned other electric butterfly valves for not referring to but there is sign in figure, are not involved in switching, when can be as overhauling or disabling
Used when cutting off a certain row heat exchanger.
The technical program realizes multi-state, a variety of connection in series-parallel from the combining form of engineering reality combination cooling system
Combination may, system condition is timely adjusted by temperature signal, it is to avoid cooling water temperature is too low, it is not necessary to energy consumption
Increase, is finally reached the purpose of energy efficiency.
Claims (4)
1. a kind of power station auxiliary water Expanding Unit Element System dry and wet combines air cooling system, it is characterised in that include in parallel at least 2 groups
Unit style dry and wet combines cooling tower group, and the arrival end of each dry and wet joint cooling tower group is connected with butterfly valve distribution system, exported
End pipe road connects Controlling Auxiliaries in Power Plants equipment after converging, and Controlling Auxiliaries in Power Plants equipment is connected by main pipe with butterfly valve distribution system, above-mentioned entirety
Connection forms a loop；
The finned air cooler and evaporating air cooler of series connection, evaporation type air cooling are included in every group of dry and wet joint cooling tower group
The import and export of device is respectively arranged with butterfly valve group, goes out before finned air cooler entrance with evaporating air cooler exit butterfly valve group
Set at mouthful and set the first branch line on the first pipeline of connection, first pipeline, it is communicated in evaporating air cooler import
Before butterfly valve group import；
The butterfly valve of control circulation is respectively equipped with first line entry and the first branch line.
2. power station auxiliary water Expanding Unit Element System dry and wet as claimed in claim 1 combines air cooling system, it is characterised in that include
2 groups of dry and wets combine cooling tower group（1、2）, its 2 water inlets be interconnected, on the pipeline of the connection set the butterfly valve of main pipe the 3rd
（33）, 2 main pipes are exported from Controlling Auxiliaries in Power Plants equipment（51、52）, 2 main pipes（51、52）2 groups of dry and wet joint coolings are connected respectively
The butterfly valve of main pipe first is set respectively in the water inlet of tower group, 2 main pipes（31）With the butterfly valve of main pipe second（32）.
3. power station auxiliary water Expanding Unit Element System dry and wet as claimed in claim 1 or 2 combines air cooling system, it is characterised in that
Butterfly valve group is set respectively at the import and export of the finned air cooler.
4. power station auxiliary water Expanding Unit Element System dry and wet as claimed in claim 3 combines air cooling system, it is characterised in that described
Before first pipeline and/or afterwards, set and set on pressure transmitter and temperature transmitter, finned air cooler and evaporating air cooler
Axial flow blower and cooling water pump, the two is all connected with temperature transmitter and transmits temperature signal by it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720147708.9U CN206450129U (en) | 2017-02-17 | 2017-02-17 | Power station auxiliary water Expanding Unit Element System dry and wet combines air cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720147708.9U CN206450129U (en) | 2017-02-17 | 2017-02-17 | Power station auxiliary water Expanding Unit Element System dry and wet combines air cooling system |
Publications (1)
| Publication Number | Publication Date |
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| CN206450129U true CN206450129U (en) | 2017-08-29 |
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ID=59665901
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720147708.9U Active CN206450129U (en) | 2017-02-17 | 2017-02-17 | Power station auxiliary water Expanding Unit Element System dry and wet combines air cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458623A (en) * | 2017-02-17 | 2018-08-28 | 中国电力工程顾问集团华北电力设计院有限公司 | Power station auxiliary water Expanding Unit Element System dry and wet combines air cooling system |
| CN109780886A (en) * | 2019-01-29 | 2019-05-21 | 东南大学 | A kind of heat pipe-type dry and wet joint cooling device suitable for desert area nuclear power plant |
-
2017
- 2017-02-17 CN CN201720147708.9U patent/CN206450129U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458623A (en) * | 2017-02-17 | 2018-08-28 | 中国电力工程顾问集团华北电力设计院有限公司 | Power station auxiliary water Expanding Unit Element System dry and wet combines air cooling system |
| CN109780886A (en) * | 2019-01-29 | 2019-05-21 | 东南大学 | A kind of heat pipe-type dry and wet joint cooling device suitable for desert area nuclear power plant |
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