CN206176338U - Horizontal U -shaped tubular feed water heater dredges sealed end plate water seal structure of cold section - Google Patents
Horizontal U -shaped tubular feed water heater dredges sealed end plate water seal structure of cold section Download PDFInfo
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- CN206176338U CN206176338U CN201621091567.5U CN201621091567U CN206176338U CN 206176338 U CN206176338 U CN 206176338U CN 201621091567 U CN201621091567 U CN 201621091567U CN 206176338 U CN206176338 U CN 206176338U
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- cold section
- end plate
- involucrum
- plate
- cavity
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Abstract
The utility model relates to a power station auxiliary engine to a horizontal U -shaped tubular feed water heater dredges sealed end plate water seal structure of cold section is disclosed, dredge cold section by roof (1), bottom plate (8), left side involucrum (7), the right side involucrum (9) and sealed end plate (3) are constituteed, U -shaped pipe (5) extend in the thin cold section after passing sealed end plate (3), it still includes one outer sealing plate (2) to dredge cold section, outer sealing plate (2) and roof (1), bottom plate (8), constitute one inclosed cavity (14) with sealed end plate (3) behind left side involucrum (7) and right involucrum (9) fixed connection, be equipped with one saturation water collecting vat (11) on the roof of cavity (14), be equipped with one weeping hole (10) in saturation water collecting vat (11), be equipped with outage (12) on the bottom plate of cavity (14). The utility model discloses a water seal structure can prevent effectively that steam from getting into thin cold section to guarantee to dredge the heat transfer efficiency of cold section and avoid the harm to the U -shaped pipe.
Description
Technical field
This utility model is related to a kind of power plant auxiliary machine, especially a kind of horizontal type U pipe type feed-water heater.
Background technology
Horizontal type U pipe type high-pressure feed-water heater is the visual plant for improving power station economy, according to heat transfer type not
Together, generally can by heater be divided into superheat section, saturation section and dredge cold section.The superheat section of heater utilizes the sensible heat of extracted steam from turbine
To heat the feedwater in U-tube, saturation section heats the feedwater in U-tube using the latent heat for drawing gas, and dredges cold section then using condensation
The sensible heat of water is heating the feedwater in U-tube.Thin cold section of horizontal type U pipe type high-pressure feed-water heater adopts hydrocone type structure,
Next stage Gao Jianei is drawn into by the saturation water outside cold section is dredged by involucrum；Dredge cold section by Seal end plate, top board, base plate and a left side,
By being formed by welding, the sealing property of each junction can be effectively ensured right involucrum.But due to U-shaped heat exchanger tube need through
Seal end plate is extended in thin cold section, so can there is certain gap between Seal end plate and U-tube, steam will pass through this
A little gaps are entered in thin cold section, once dredge cold section of air inlet, it will biphase gas and liquid flow is produced, the heat transfer effect for dredging cold section can be not only made
Rate is greatly reduced, and also U-shaped heat exchanger tube can be caused damage；At present, generally by the thicker Seal end plate of use and in sealing
Process twice ring packing in the pore of end plate to increase the sealing between Seal end plate and U-tube, so as to a certain degree
On prevent steam from entering in thin cold section, but only by the sealing for taking above-mentioned measure that Seal end plate can not be completely secured
Can, in actual running, clearance flow enters thin cold section to heater between steam is understood between Seal end plate and U-tube unavoidably
Interior, for this, urgent need is a kind of can effectively prevent steam from entering into the structure in thin cold section.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of horizontal type U pipe type feed-water heater and dredges cold section of sealing
End plate sealing structure for water, the sealing structure for water can be effectively prevented steam and enter thin cold section.
This utility model solves the technical scheme that its technical problem adopted：Horizontal type U pipe type feed-water heater dredges cold
Section Seal end plate sealing structure for water, described heater includes housing, U-tube and dredges cold section, and described thin cold section by top board, bottom
Plate, left involucrum, right involucrum and Seal end plate composition, described U-tube is extended in thin cold section through after described Seal end plate, institute
Thin cold section for stating also includes one block of external seal plate, and described external seal plate is solid with described top board, base plate, left involucrum and right involucrum
A cavity is constituted with described Seal end plate after fixed connection, the top board of the cavity is provided with a liquid-leaking nozzle, on top board also
A saturation water collecting groove is provided with, described liquid-leaking nozzle is located in described saturation water collecting groove.
Further, the base plate of the cavity is provided with outage.
Further, described saturation water collecting groove is located on the top board of the cavity, and it is by four pieces of rectangular slab groups
Into rectangular channel, described liquid-leaking nozzle is rectangular opening, and it is located at the middle part of saturation water collecting groove.
Further, described external seal plate is fixedly connected by welding with described top board, base plate and left and right involucrum.
The beneficial effects of the utility model are：Steam can be effectively prevented and enter thin cold section, so as to ensure to dredge cold section
Heat transfer efficiency.
Description of the drawings
Fig. 1 is the front view of horizontal type U pipe type feed-water heater.
Fig. 2 is the left view of horizontal type U pipe type feed-water heater.
Fig. 3 is the structural representation that horizontal type U pipe type feed-water heater dredges cold section.
Fig. 4 is the structural representation of Seal end plate.
Fig. 5 is the structural representation of external seal plate.
Fig. 6 is the structural representation of top board.
Fig. 7 is the structural representation of base plate.
It is labeled as in figure：1- top boards, 2- external seal plates, 3- Seal end plates, 4- housings, 5-U shape pipes, 6- tube sheets, the left bags of 7-
Shell, 8- base plates, the right involucrums of 9-, 10- liquid-leaking nozzles, 11- saturation water collecting grooves, 12- outages, 13- rectangular slabs, 14- cavitys.
Specific embodiment
This utility model is further illustrated with reference to the accompanying drawings and examples.
As illustrated, horizontal type U pipe type feed-water heater of the present utility model includes housing 4, U-tube 5, dredges cold section and pipe
Plate 6, described to dredge cold section by top board 1, base plate 8, left involucrum 7, right involucrum 9 and Seal end plate 3 by being welded to form, described top board
1st, one end of base plate 8 and left and right involucrum is welded and fixed with described tube sheet 6, described Seal end plate 3 then with top board 1, base plate
8 and the other end of left and right involucrum be fixedly connected, described U-tube 5 through be preset in after the pore on Seal end plate 3 extend it is thin
In cold section, in order to increase the sealing property between Seal end plate 3 and U-tube 5, on the pore of Seal end plate 3 twice are machined with
Annular seal groove；Then it is preset with the external seal plate 2 of pore by one piece to be enclosed within described U-tube 5, then will be described by welding
External seal plate 2 be fixedly connected with the end of the top board 1, base plate 8 and left and right involucrum after constitute with described Seal end plate 3
One cavity 14, the size of cavity 14 can be controlled by adjusting the distance between external seal plate 2 and Seal end plate 3；Cavity
14 top board is provided with a saturation water collecting groove 11, and the saturation water collecting groove 11 is the rectangle being made up of four pieces of rectangular slabs 13
Groove, then arranges a rectangle liquid-leaking nozzle 10, so when the steam of saturation section is cold at the middle part of described saturation water collecting groove 11
Congeal into after saturation water can stream enter in described saturation water collecting groove 11, then described cavity is entered by the described stream of liquid-leaking nozzle 10
In 14, although the clearance leakage that the saturation water that stream enters in cavity 14 can be between external seal plate 2 and U-tube 5 is gone out, as long as
Meet the water yield collected in the saturation water collecting groove 11 to go out more than the clearance leakage between external seal plate 2 and U-tube 5
The water yield can ensure that high-pressure heater is filled with all the time saturation water in normal operation in the cavity 14, so as to by sealed end
The water seal of plate 3, can so be effectively prevented steam and be entered in thin cold section by gap, so as to ensure that thin cold section of conductivity of heat
Energy.The saturation water in the cavity 14 can all be drained after in order to ensure high-pressure heater hydraulic pressure, in the cavity 14
Base plate is provided with an outage 12.
Claims (4)
1. horizontal type U pipe type feed-water heater dredges cold section of Seal end plate sealing structure for water, and described heater includes housing（4）, U-shaped
Pipe（5）And dredge cold section, described thin cold section by top board（1）, base plate（8）, left involucrum（7）, right involucrum（9）And Seal end plate（3）
Composition, described U-tube（5）Through described Seal end plate（3）After extend in thin cold section, it is characterised in that：Described is thin cold
Section also includes one block of external seal plate（2）, described external seal plate（2）With described top board（1）, base plate（8）, left involucrum（7）And
Right involucrum（9）With described Seal end plate after being fixedly connected（3）Constitute a cavity（14）, the cavity（14）Top board on set
There is a liquid-leaking nozzle（10）, top board（1）On be additionally provided with a saturation water collecting groove（11）, described liquid-leaking nozzle（10）Positioned at described
Saturation water collecting groove（11）It is interior.
2. horizontal type U pipe type feed-water heater according to claim 1 dredges cold section of Seal end plate sealing structure for water, and its feature exists
In：The cavity（14）Base plate be provided with outage（12）.
3. horizontal type U pipe type feed-water heater according to claim 1 dredges cold section of Seal end plate sealing structure for water, and its feature exists
In：Described saturation water collecting groove（11）It is located at the cavity（14）Top board on, and it is by four pieces of rectangular slabs（13）Composition
Rectangular channel, described liquid-leaking nozzle（10）For rectangular opening, and it is located at saturation water collecting groove（11）Middle part.
4. horizontal type U pipe type feed-water heater according to claim 1 dredges cold section of Seal end plate sealing structure for water, and its feature exists
In：Described external seal plate（2）By welding and described top board（1）, base plate（8）And left and right involucrum is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621091567.5U CN206176338U (en) | 2016-09-29 | 2016-09-29 | Horizontal U -shaped tubular feed water heater dredges sealed end plate water seal structure of cold section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621091567.5U CN206176338U (en) | 2016-09-29 | 2016-09-29 | Horizontal U -shaped tubular feed water heater dredges sealed end plate water seal structure of cold section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206176338U true CN206176338U (en) | 2017-05-17 |
Family
ID=58677977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621091567.5U Withdrawn - After Issue CN206176338U (en) | 2016-09-29 | 2016-09-29 | Horizontal U -shaped tubular feed water heater dredges sealed end plate water seal structure of cold section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206176338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322356A (en) * | 2016-09-29 | 2017-01-11 | 东方电气集团东方锅炉股份有限公司 | Seal end plate water seal structure of draining cooling section of horizontal U-shaped-pipe type feed water heater |
-
2016
- 2016-09-29 CN CN201621091567.5U patent/CN206176338U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322356A (en) * | 2016-09-29 | 2017-01-11 | 东方电气集团东方锅炉股份有限公司 | Seal end plate water seal structure of draining cooling section of horizontal U-shaped-pipe type feed water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170517 Effective date of abandoning: 20180810 |
|
| AV01 | Patent right actively abandoned |