CN206709052U - A kind of pure counter-current steam cooler - Google Patents
A kind of pure counter-current steam cooler Download PDFInfo
- Publication number
- CN206709052U CN206709052U CN201720365268.4U CN201720365268U CN206709052U CN 206709052 U CN206709052 U CN 206709052U CN 201720365268 U CN201720365268 U CN 201720365268U CN 206709052 U CN206709052 U CN 206709052U
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- China
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- hemispherical head
- heat exchanger
- steam
- half chamber
- interior involucrum
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Abstract
The utility model discloses a kind of pure counter-current steam cooler, tube bank including housing and in housing, it is characterized in that, the housing includes stack shell, one end closing of stack shell, the other end connects hemispherical head by tube sheet, is provided with hydroecium demarcation strip in hemispherical head, hemispherical head provided with respectively with upper half chamber, the feedwater outlet pipe of lower half chamber, feed-water inlet pipe；Described restrain includes more heat exchanger tubes, the upper half chamber in one end and hemispherical head of top half heat exchanger tube, the lower half chamber in one end and hemispherical head of the latter half heat exchanger tube；Stack shell is provided with the steam inlet pipe connected with upper interior involucrum and the steam outlet pipe connected with lower interior involucrum.Steam condenser feedwater provided by the utility model and steam flow direction whole process are all the forms of adverse current, and it is installed on No. 1 height and added between boiler, using the 2nd grade of degree of superheat drawn gas of steam turbine, feedwater are heated, improves the final feed temperature of boiler.
Description
Technical field
It the utility model is related to a kind of pure counter-current steam cooler being applied in the industry generating set heat regenerative system of power station.
Steam condenser is the equipment that final step heating is carried out to boiler feedwater.
Background technology
Steam condenser is for the supporting Important Auxiliary equipment equipment of fired power generating unit.It is to utilize in feed heating system to be somebody's turn to do that it, which is acted on,
The feedwater of the higher degree of superheat heating final stage high-pressure heater of level steam, further to improve feedwater outlet temperature, so as to improve
The thermal efficiency of unit.The heating vapour source of steam condenser is drawn gas from steam turbine, and steam operating temperature is very high.
Steam condenser typically uses concurrent-countercurrent structure, and this structure is not suitable in the heat regenerative system of all fired power generating units.
Concurrent-countercurrent structure steam condenser feeds water and steam flow direction：Lower half way is following current form, and upper half way is countercurrent flow, and it is lacked
Point be flow through steam condenser feedwater ratio it is big, cause hydroecium diameter and diameter of the housing big, length is but very short, structure arrange not
Rationally；Shell side pressure drop is also big simultaneously.And the steam condenser of pure counterflow configuration, it is small to flow through the feedwater ratio of steam condenser, enters
And hydroecium diameter and diameter of the housing can be reduced, the length of equipment is lengthened, structure is more they tended to rationally；It can effectively reduce shell-side simultaneously
Pressure drop, meet unit performance requirement.
Utility model content
Problem to be solved in the utility model is the steam condenser shell-side of concurrent-countercurrent structure in double reheat power generation sets
Pressure drop is excessive.
In order to solve the above problems, the utility model provides following technical scheme：
A kind of pure counter-current steam cooler, including housing and the tube bank in housing, it is characterised in that the housing bag
Stack shell, one end closing of stack shell are included, the other end connects hemispherical head by tube sheet, and being provided with hydroecium in hemispherical head separates
Plate, hemispherical head is divided into upper half chamber, lower half chamber by it, hemispherical head be provided with respectively with upper half chamber, lower half chamber
Feedwater outlet pipe, the feed-water inlet pipe of room connection；The tube bank includes more heat exchanger tubes, one end of top half heat exchanger tube and half
Upper half chamber in dome head, the part heat exchanger tube are wrapped with interior involucrum, one end of the latter half heat exchanger tube with
Lower half chamber in hemispherical head, the part heat exchanger tube are wrapped with lower interior involucrum；Stack shell is provided with and upper interior involucrum
The steam inlet pipe of connection and the steam outlet pipe connected with lower interior involucrum.
Preferably, also it is enclosed with outer envelope outside the upper interior involucrum.
Preferably, the upper interior involucrum, lower interior involucrum are provided with insulation board, upper interior involucrum, lower interior bag close to the side of tube sheet
Provided with large baffle of the polylith for fixing heat exchanger tube in shell.
It is highly preferred that at least one piece of small baffle is provided between the large baffle and adjacent large baffle or insulation board.
Steam condenser provided by the utility model, feedwater and steam flow direction whole process are all the forms of adverse current, and it is pacified
Add loaded on No. 1 height between boiler, using the 2nd grade of degree of superheat drawn gas of steam turbine, feedwater is heated, improves boiler most
Whole feed temperature, further improves generatine set heat efficiency.Large baffle arrangement is restrained by the way of forced flow, the spacing of dividing plate with
Meet to be determined according to thermodynamic computing premised on drop requirements, while increase some small baffles between large baffle to prevent shaking for tube bank
Dynamic, all big small baffles use special stringing pattern.
Brief description of the drawings
Fig. 1 is the structural representation of pure counter-current steam cooler provided by the utility model；
Fig. 2 is the schematic diagram of tube bank；
Fig. 3 is the structural representation of large baffle；
Fig. 4 is the structural representation of small baffle.
Embodiment
To become apparent the utility model, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Embodiment
As shown in figure 1, for a kind of structural representation of pure counter-current steam cooler provided by the utility model, it includes shell
Body and the tube bank in housing.The housing includes stack shell 9, one end closing of stack shell 9, and the other end passes through the connection of tube sheet 5 half
Dome head 2, hydroecium demarcation strip 3 is provided with hemispherical head 2, it divides hemispherical head 2 for upper half chamber, lower half chamber,
Hemispherical head 2 be provided with respectively with upper half chamber, the feedwater outlet pipe 4 of lower half chamber, feed-water inlet pipe 1；The pipe
Beam is as shown in Fig. 2 including more heat exchanger tubes 7, one end and the upper half chamber in hemispherical head 2 of top half heat exchanger tube 7 connect
Logical, the part heat exchanger tube 7 is wrapped with interior involucrum 8, and outer envelope 13 is also enclosed with outside upper interior involucrum 10；The latter half heat exchanger tube
7 one end is wrapped with lower interior involucrum 10 with the lower half chamber in hemispherical head 2, the part heat exchanger tube 7；Involucrum in upper
8th, lower interior involucrum 10 is provided with insulation board 12 close to the side of tube sheet 5, and being provided with polylith in upper interior involucrum 8, lower interior involucrum 10 is used for admittedly
Determine the large baffle 14 (as shown in Figure 3) of heat exchanger tube 7.It is provided with least between large baffle 14 and adjacent large baffle 14 or insulation board 12
One piece of small baffle 15 (as shown in Figure 4).Stack shell 9 be provided with the steam inlet pipe 6 that is connected with upper interior involucrum 8 and with lower interior involucrum 10
The steam outlet pipe 11 of connection.
When equipment is run, system feedwater enters after the lower half chamber of hemispherical head 2 by heat exchanger tube 7 from feed-water inlet pipe 1,
Discharged from the feedwater outlet pipe 4 of the upper half chamber of hemispherical head 2；Steam enters upper interior bag from steam inlet pipe 6 through outer envelope 13
Shell 8, through the lower interior involucrum 10 in stack shell 9, discharged (flow direction that arrow is associated media in Fig. 1) from steam outlet pipe 11.
Feedwater in the heat exchanger tube 7 of forced flow direction of the steam along large baffle 14 and tube bank upper half part fully exchanges heat
Enter lower interior involucrum 10 afterwards, then exchanged heat with the feedwater in the heat exchanger tube 7 of tube bank lower portion, arranged by the perforate of lower interior involucrum 10
Go out.Between large baffle 14, some small baffles 15 are set between large baffle 14 and insulation board 12, avoided because of the spacing mistake of large baffle 14
Cause bundle vibration greatly.
Claims (4)
1. a kind of pure counter-current steam cooler, including housing and the tube bank in housing, it is characterised in that the housing includes
Stack shell (9), one end closing of stack shell (9), the other end connect hemispherical head (2) by tube sheet (5), and hemispherical head (2) is interior
Provided with hydroecium demarcation strip (3), hemispherical head (2) is divided into upper half chamber, lower half chamber by it, and hemispherical head (2) is provided with
Respectively with upper half chamber, the feedwater outlet pipe (4) of lower half chamber, feed-water inlet pipe (1)；The tube bank includes more heat exchange
Manage (7), one end and the upper half chamber in hemispherical head (2), the part heat exchanger tube (7) of top half heat exchanger tube (7)
Interior involucrum (8) is wrapped with, one end and the lower half chamber in hemispherical head (2) of the latter half heat exchanger tube (7) should
Part heat exchanger tube (7) is wrapped with lower interior involucrum (10)；Stack shell (9) is provided with the steam inlet pipe connected with upper interior involucrum (8)
(6) steam outlet pipe (11) and with lower interior involucrum (10) connected.
2. pure counter-current steam cooler as claimed in claim 1, it is characterised in that the upper interior involucrum (10) is also enclosed with outside
Outer envelope (13).
3. pure counter-current steam cooler as claimed in claim 1, it is characterised in that the upper interior involucrum (8), lower interior involucrum
(10) insulation board (12) is provided with close to the side of tube sheet (5), being provided with polylith in upper interior involucrum (8), lower interior involucrum (10) is used for admittedly
Determine the large baffle (14) of heat exchanger tube (7).
4. pure counter-current steam cooler as claimed in claim 3, it is characterised in that the large baffle (14) with it is adjacent it is big every
At least one piece of small baffle (15) is provided between plate (14) or insulation board (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720365268.4U CN206709052U (en) | 2017-04-07 | 2017-04-07 | A kind of pure counter-current steam cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720365268.4U CN206709052U (en) | 2017-04-07 | 2017-04-07 | A kind of pure counter-current steam cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206709052U true CN206709052U (en) | 2017-12-05 |
Family
ID=60468812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720365268.4U Active CN206709052U (en) | 2017-04-07 | 2017-04-07 | A kind of pure counter-current steam cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206709052U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043885A (en) * | 2019-04-10 | 2019-07-23 | 哈尔滨锅炉厂有限责任公司 | A kind of novel fired power generating unit steam condenser U heat exchange tail portion containment structure |
| CN113446588A (en) * | 2021-06-29 | 2021-09-28 | 上海电气电站设备有限公司 | Kettle-type evaporator with overheating function |
-
2017
- 2017-04-07 CN CN201720365268.4U patent/CN206709052U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043885A (en) * | 2019-04-10 | 2019-07-23 | 哈尔滨锅炉厂有限责任公司 | A kind of novel fired power generating unit steam condenser U heat exchange tail portion containment structure |
| CN113446588A (en) * | 2021-06-29 | 2021-09-28 | 上海电气电站设备有限公司 | Kettle-type evaporator with overheating function |
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