CN105972578A - Steam cooling heater and working method thereof - Google Patents
Steam cooling heater and working method thereof Download PDFInfo
- Publication number
- CN105972578A CN105972578A CN201610286559.4A CN201610286559A CN105972578A CN 105972578 A CN105972578 A CN 105972578A CN 201610286559 A CN201610286559 A CN 201610286559A CN 105972578 A CN105972578 A CN 105972578A
- Authority
- CN
- China
- Prior art keywords
- heater
- tube
- steam
- cooler
- pipeline
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/325—Schematic arrangements or control devices therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/06—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
Abstract
The invention discloses a steam cooling heater and a working method thereof. The steam cooling heater comprises a steam cooler and a heater, wherein U tubes of the steam cooler and the heater are connected together by communicating pipelines, and after entering the steam cooler, exhausted steam of a turbine firstly heats a medium in the first U tube, meanwhile, the exhausted steam is cooled, and the cooled exhausted steam enters the heater via the communicating pipelines to heat a medium in the second U tube, thus realizing the function of an original heater. According to the invention, the function of the steam cooler can be realized, and a heater can be replaced, thus having dual functions; the steam cooler and the heater are integrated into one, thus greatly reducing occupation area; and independent arrangement of an emergency drain pipeline of the steam cooler is not needed, thus simplifying pipeline layout and greatly lowering modification cost.
Description
Technical field
The invention belongs to thermal power generation unit draw gas and heater system optimizes field, be specifically related to a kind of steam cooling heater and
Method of work.
Background technology
Owing to the degree of superheat of thermal power plant's reheating embrittlement regenerative steam is relatively big, the irreversible loss produced in heat transfer process is the biggest.It is most
May reduce this loss, existing reforming mode is increase externally arranged steam cooler on the corresponding extraction line of unit, and steam cools down
Device is positioned on extraction line, and part feedwater enters boiler after steam condenser is heated, draws gas simultaneously and enters heating after being lowered the temperature
Inside device.On the one hand this mode properly increases the temperature of part feedwater, reduces effective heat transfer temperature difference of boiler, increases boiler efficiency,
Improve the heat-economy of unit；On the other hand reduce the degree of superheat of steam, namely reduce heat transfer temperature difference, improve unit further
Heat-economy.
Existing renovation technique, i.e. increases externally arranged steam cooler at extraction line, not only individually to buy steam condenser, and
Due to the change of steam inlet condition, high-pressure heater originally is the most undesirable, needs to change.Meanwhile, the layout difficulty of pipeline increases
Greatly, the emergent drain pipeline of mainly steam condenser to rearrange.System complexity is greatly increased, it is contemplated that cost expenses reaches one
More than thousand ten thousand.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, it is provided that a kind of steam cooling heater and method of work thereof, it is possible to steam is cold
But device and heater integration, an equipment achieves the function of two equipment.
In order to achieve the above object, a kind of steam cooling heater, including steaming cooler and heater, steams cooler and includes by steaming cooler
Dividing plate is separated into the steaming cooler water tank of two hydroeciums, and two hydroeciums steaming cooler are connected by the first U-tube respectively, and first is U-shaped
Pipe offers part feed-water inlet and part feedwater outlet respectively；Heater includes being separated into adding of two hydroeciums by heater dividing plate
Hot device water tank, two hydroeciums of heater are connected by the second U-tube respectively, and the second U-tube offers heater water inlet respectively
Mouthful and heater outlet, the outside of the first U-tube and the second U-tube is all arranged with pipeline, the first U-tube and second U-shaped
Being connected by connecting pipeline of pipe, is steamed and offers extraction entrance on the pipeline of cooler.
The part feedwater outlet of described first U-tube is near extraction entrance, and the heater outlet of the second U-tube is near communicating pipe
Road.
All it is connected by the first orifice plate between described first U-tube with two hydroeciums steaming cooler.
All it is connected by the second orifice plate between described second U-tube with two hydroeciums of heater.
The method of work of a kind of steam cooling heater, comprises the following steps:
Step one, draws gas in extraction entrance enters the pipeline steaming cooler, carries out with the medium in the first U-tube steamed in cooler
Heat exchange, draws gas and is lowered the temperature, and feedwater is passed through pipeline after heating up and entered the hydroecium steaming cooler；
Step 2, in the pipeline being entered heater by connecting pipeline that draws gas after cooling；
Step 3: after drawing gas after cooling enters the pipeline of heater, heat the medium in the second U-tube, medium row after heating
Enter heater hydroecium.
The described flow direction drawn gas in the pipeline steaming cooler and heater respectively with the first U-tube and the second U-tube medium
Flow direction contrary.
Compared with prior art, steaming cooler and heater are united two into one by the present invention, substantially reduce floor space, and are easy to cloth
Put, after cooler is steamed in the entrance of drawing gas of steam turbine, heated the medium in the first U-tube before this, and drew gas simultaneously and lowered the temperature, after cooling
Draw gas and entered in heater by connecting pipe, the medium in the people's U-tube given heats, it is achieved the effect of former heater,
The present invention can not only realize the effect of steam condenser, moreover it is possible to substituting heater, have dual-use function, the present invention is by steam condenser
Uniting two into one with heater, floor space is greatly reduced, and need not be separately provided the emergent drain pipeline of steam condenser, simplifies
Pipe arrangement, improvement cost is substantially reduced.
Further, the flow direction drawn gas in the pipeline steaming cooler and heater of the present invention respectively with the first U-tube and the
The flow direction of two U-tube medium is contrary, is to draw gas progressively to heat medium in two U-tube, improves heating
Efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of steam of present invention cooling heater.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings.
See Fig. 1, a kind of steam cooling heater, including steaming cooler and heater, steam cooler and include by steaming 6 points of cooler dividing plate
Being divided into the steaming cooler water tank 9 of two hydroeciums, two hydroeciums steaming cooler are connected by the first U-tube 10 respectively, the first U-tube
10 offer part feed-water inlet 1 and part feedwater outlet 2 respectively；Heater includes being separated into two by heater dividing plate 11
The heater water tanks 12 of hydroecium, two hydroeciums of heater are connected by the second U-tube 13 respectively, and the second U-tube 13 is respectively
Offering heater water inlet 4 and heater outlet 5, the outside of the first U-tube 10 and the second U-tube 13 is all arranged with
Pipeline, the first U-tube 10 is connected by connecting pipeline 15 with the second U-tube 13, steams to offer on the pipeline of cooler and draws gas
Entrance 3, the part feedwater outlet 2 of the first U-tube 10 is near extraction entrance 3, the heater outlet 5 of the second U-tube 13
All being connected by the first orifice plate 7 near between connecting pipeline 15, the first U-tube 10 with two hydroeciums steaming cooler, second is U-shaped
All it is connected by the second orifice plate 14 between pipe 13 with two hydroeciums of heater.
The method of work of a kind of steam cooling heater, comprises the following steps:
Step one, draws gas in extraction entrance 3 enters the pipeline steaming cooler, with the medium in the first U-tube 10 steamed in cooler
Carrying out heat exchange, draw gas and lowered the temperature, feedwater is passed through pipeline after heating up and is entered the hydroecium steaming cooler；
Step 2, in the pipeline being entered heater by connecting pipeline 15 that draws gas after cooling；
Step 3: after drawing gas after cooling enters the pipeline of heater, heat the medium in the second U-tube 13, medium after heating
Enter heater hydroecium.
Draw gas the flow direction in the pipeline steaming cooler and heater respectively with the first U-tube 10 and the second U-tube 13 intermediary
The flow direction of matter is contrary, and the extraction temperature that the first U-tube 10 is contacted with the second U-tube 13 medium gradually rises, and adds
Thermal effect is good.
Steaming cooler is combined by the present invention with heater, makes a device have steaming cooler and the function of two equipment of heater,
Improvement cost is substantially reduced, and can reduce by 6% according to preliminary estimation.
Claims (6)
1. steam cooling heater, it is characterised in that include steaming cooler and heater, steam cooler include by steam cooler every
Plate (6) is separated into steaming cooler water tank (9) of two hydroeciums, steams two hydroeciums of cooler respectively by the first U-tube (10) even
Connecing, the first U-tube (10) offers part feed-water inlet (1) and part feedwater outlet (2) respectively；Heater includes passing through
Heater dividing plate (11) is separated into the heater water tanks (12) of two hydroeciums, and two hydroeciums of heater are U-shaped by second respectively
Pipe (13) connects, and the second U-tube (13) offers heater water inlet (4) and heater outlet (5) respectively, and first
The outside of U-tube (10) and the second U-tube (13) is all arranged with pipeline, the first U-tube (10) and the second U-tube (13)
By connecting pipeline (15) connect, steam cooler pipeline on offer extraction entrance (3).
A kind of steam cooling heater the most according to claim 1, it is characterised in that described first U-tube (10)
Part feedwater outlet (2) is near extraction entrance (3), and the heater outlet (5) of the second U-tube (13) is near communicating pipe
Road (15).
A kind of steam cooling heater the most according to claim 1, it is characterised in that described first U-tube (10) with
Steam and all connected by the first orifice plate (7) between two hydroeciums of cooler.
A kind of steam cooling heater the most according to claim 1, it is characterised in that described second U-tube (13) with
All connected by the second orifice plate (14) between two hydroeciums of heater.
5. the method for work of a steam cooling heater, it is characterised in that comprise the following steps:
Step one, draws gas in extraction entrance (3) enters the pipeline steaming cooler, and in the first U-tube (10) steamed in cooler
Medium carry out heat exchange, draw gas and lowered the temperature, feedwater heat up after by pipeline enter steam cooler hydroecium；
Step 2, in the pipeline being entered heater by connecting pipeline (15) that draws gas after cooling；
Step 3: after drawing gas after cooling enters the pipeline of heater, heat the medium in the second U-tube (13), after heating
Medium enters heater hydroecium.
A kind of steam the most according to claim 5 cooling heater method of work, it is characterised in that described in draw gas steam
Flow direction in the pipeline of cooler and heater respectively with the first U-tube (10) and the stream of the second U-tube (13) medium
Dynamic in opposite direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610286559.4A CN105972578B (en) | 2016-05-03 | 2016-05-03 | A kind of steam cooling heater and its method of work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610286559.4A CN105972578B (en) | 2016-05-03 | 2016-05-03 | A kind of steam cooling heater and its method of work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105972578A true CN105972578A (en) | 2016-09-28 |
| CN105972578B CN105972578B (en) | 2018-01-16 |
Family
ID=56993871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610286559.4A Active CN105972578B (en) | 2016-05-03 | 2016-05-03 | A kind of steam cooling heater and its method of work |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105972578B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2458382C2 (en) * | 1974-12-10 | 1976-12-16 | Kraftwerk Union Ag | FEED WATER PREHEATER WITH TWO STEAM ROOMS |
| CN102840573A (en) * | 2011-06-24 | 2012-12-26 | 同方节能工程技术有限公司 | Water replenishing preheating system of thermal power plant |
| CN204786336U (en) * | 2015-07-31 | 2015-11-18 | 魏熙臣 | External steam cooling ware connected system in steam turbine heat regenerative system |
| CN205579539U (en) * | 2016-05-03 | 2016-09-14 | 西安热工研究院有限公司 | Steam cooling heater |
-
2016
- 2016-05-03 CN CN201610286559.4A patent/CN105972578B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2458382C2 (en) * | 1974-12-10 | 1976-12-16 | Kraftwerk Union Ag | FEED WATER PREHEATER WITH TWO STEAM ROOMS |
| CN102840573A (en) * | 2011-06-24 | 2012-12-26 | 同方节能工程技术有限公司 | Water replenishing preheating system of thermal power plant |
| CN204786336U (en) * | 2015-07-31 | 2015-11-18 | 魏熙臣 | External steam cooling ware connected system in steam turbine heat regenerative system |
| CN205579539U (en) * | 2016-05-03 | 2016-09-14 | 西安热工研究院有限公司 | Steam cooling heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105972578B (en) | 2018-01-16 |
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