CN207815296U - A kind of superheater - Google Patents
A kind of superheater Download PDFInfo
- Publication number
- CN207815296U CN207815296U CN201820157085.8U CN201820157085U CN207815296U CN 207815296 U CN207815296 U CN 207815296U CN 201820157085 U CN201820157085 U CN 201820157085U CN 207815296 U CN207815296 U CN 207815296U
- Authority
- CN
- China
- Prior art keywords
- header
- superheater
- air balance
- tube
- elastic tube
- 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.)
- Expired - Fee Related
Links
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a kind of superheaters, including more superheater tubes, and the entrance header and outlet header being connected to respectively with the both ends of the more superheater tubes；The entrance header is also connected to by air balance pipe with the outlet header, and the air balance pipe is elastic tube.The utility model is connected to entrance header and outlet header using elastic tube as air balance pipe; when generating along the internal stress in air balance length of tube direction; elastic tube can effectively buffer internal stress, and protection weld is without damage, avoid that steam leakage accident occurs.
Description
Technical field
The utility model is related to boiler plant more particularly to a kind of superheaters.
Background technology
Superheater is the component that steam is further heated to overtemperature in boiler from saturation temperature, also known as steam superheating
Device.Superheater can be divided into convection type, radiant type and half radiant type by heat transfer type, can be divided into serpentine, screen by design feature
Formula, wall and packet wall, they are all made of several pipes in parallel and inlet and outlet header.
Superheater is passed through the lower steam of temperature in entrance header, and steam flows in several pipes in parallel, passes through pot
The flue gas that stove generates heats steam, forms superheated steam and enters outlet header, due to the vapor (steam) temperature in outlet header
Height, pressure is big, and steam is flow backwards in order to prevent, needs to balance the pressure in entrance header and outlet header, thus in entrance header and
Air balance pipe is provided between outlet header to balance the pressure in two headers, air balance pipe is usually straight pipe.
But since the temperature difference at air balance pipe both ends is larger, be easy air balance pipe and the weld of header by
The internal stress generated along air balance length of tube direction is thermally expanded, equal strength weak part at weld bond or tube socket reducing is caused to generate
Crackle causes steam to leak.
Utility model content
The utility model provides a kind of superheater, to solve, since the temperature difference at air balance pipe both ends is larger, to be easy
Generate the internal stress along air balance length of tube direction in air balance pipe and the weld expanded by heating of header, cause weld bond or
The problem of equal strength weak part cracks at tube socket reducing.
A kind of superheater provided by the utility model, including：More superheater tubes, and respectively with the more superheaters
The entrance header and outlet header of the both ends connection of pipe；
The entrance header is also connected to by air balance pipe with the outlet header, and the air balance pipe is that elasticity is curved
Pipe.
One embodiment according to the present utility model, the elastic tube are U-tube or v-shaped tube.
One embodiment according to the present utility model, a diameter of 10-15mm of the elastic tube.
One embodiment according to the present utility model, the elastic tube and the entrance header and the outlet header
Junction is set as rounded structure.
One embodiment according to the present utility model is provided with multiple fixed plates, institute perpendicular to the more superheater tubes
Multiple fixed plates are stated to grip with more superheater tubes use.
One embodiment according to the present utility model is provided with pressure-control valve on the elastic tube.
A kind of superheater provided by the utility model includes more superheater tubes, and respectively with the more superheater tubes
Both ends connection entrance header and outlet header；The entrance header also passes through air balance Guan Lian with the outlet header
Logical, the air balance pipe is elastic tube.The utility model is connected to entrance header using elastic tube as air balance pipe
And outlet header, when generating along the internal stress in air balance length of tube direction, elastic tube can effectively buffer planted agent
Power, protection weld is without damage, avoids that steam leakage accident occurs.
Description of the drawings
Fig. 1 is the stress diagram of air balance pipe in existing superheater；
Fig. 2 is a kind of structural schematic diagram for superheater that the utility model embodiment provides.
Figure label indicates：
1- superheater tubes, 2- entrance headers, 3- outlet headers, 4- normal air balance pipes, 5- elastic tubes, 6- are fixed
Plate.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples.
It is the stress diagram of air balance pipe in existing superheater referring to Fig. 1.As seen from the figure, existing normal air is flat
When the temperature difference at 4 both ends of weighing apparatus pipe is larger, the weld expanded by heating of normal air balance pipe 4 and both ends header is generated puts down along air
The internal stress in weighing apparatus length of tube direction, normal air balance pipe 4 is pullled to both ends, since normal air balance pipe 4 is straight pipe,
If things go on like this, it will result in equal strength weak part at weld bond or tube socket reducing to crack, steam caused to leak.
As shown in Fig. 2, a kind of structural schematic diagram of the superheater provided for the utility model embodiment, including：More mistakes
Hot device pipe 1, and the entrance header 2 and outlet header 3 that are connected to respectively with the both ends of more superheater tubes 1, Low Temperature Steam passes through
Entrance header 2 is delivered in superheater tube 1, and Low Temperature Steam forms superheated steam by flue gas in superheater tube 1 and is delivered to
In outlet header 3.
Entrance header 2 is also connected to by air balance pipe with outlet header 3, and entrance header 2 and outlet header 3 are cylinder
Structure, air balance pipe uses elastic tube 5, and the diameter of elastic tube 5 is less than the diameter of entrance header 2 and outlet header 3,
For balancing the pressure in entrance header 2 and outlet header 3, prevent steam from flowing backwards.
Elastic tube 5 could be provided as U-tube or v-shaped tube, may be set to be curved pipe, elastic tube 5 is by court
To both ends stretching internal stress when, the internal stress can be buffered by miniature deformation, the weld at both ends is protected not to be damaged.Elasticity
The diameter of bend pipe 2 is set as 10-15mm, convenient for the pressure in steady balance entrance header 2 and outlet header 3.
When in order to make elastic tube 5 balance pressure, internal gas flow is smooth, elastic tube 5 and entrance header 2 and outlet
The junction of header 3 is set as rounded structure.
More superheater tubes 1 are provided with multiple fixed plates 6, for fixing more superheater tubes 1, multiple fixed plates
6 grip with the more uses of superheater tubes 1, promote fixed effect.
In one embodiment of the utility model, it is provided with pressure-control valve on elastic tube 5, passes through pressure-control valve
The pressure difference at 3 both ends of entrance header 2 and outlet header can be controlled so that the controllability higher of steam heating process.
In conclusion a kind of superheater provided by the utility model includes more superheater tubes, and respectively with it is described more
The entrance header and outlet header of the both ends connection of root superheater tube；The entrance header also passes through air with the outlet header
Balance pipe is connected to, and the air balance pipe is elastic tube.The utility model is connected to using elastic tube as air balance pipe
Entrance header and outlet header, when generating along the internal stress in air balance length of tube direction, elastic tube can be effective
Internal stress is buffered, protection weld is without damage, avoids that steam leakage accident occurs.
Although the utility model has been explained in detail and has been cited embodiment, for those of ordinary skill in the art
For, it is clear that can various schemes, modification and change that make as specified above, should be construed as being included in the utility model power
Within the scope of profit requires.
Claims (6)
1. a kind of superheater, which is characterized in that including：More superheater tubes (1), and respectively with the more superheater tubes
(1) the entrance header (2) and outlet header (3) of both ends connection；
The entrance header (2) is also connected to by air balance pipe with the outlet header (3), and the air balance pipe is elasticity
Bend pipe (5).
2. superheater according to claim 1, which is characterized in that the elastic tube (5) is U-tube or v-shaped tube.
3. superheater according to claim 1, which is characterized in that a diameter of 10-15mm of the elastic tube (5).
4. superheater according to claim 1, which is characterized in that the elastic tube (5) and the entrance header (2) and
The junction of the outlet header (3) is set as rounded structure.
5. superheater according to claim 1, which is characterized in that be provided with perpendicular to the more superheater tubes (1) more
A fixed plate (6), the multiple fixed plate (6) use with the more superheater tubes (1) and grip.
6. superheater according to claim 1, which is characterized in that be provided with pressure-control valve on the elastic tube (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820157085.8U CN207815296U (en) | 2018-01-30 | 2018-01-30 | A kind of superheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820157085.8U CN207815296U (en) | 2018-01-30 | 2018-01-30 | A kind of superheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207815296U true CN207815296U (en) | 2018-09-04 |
Family
ID=63322165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820157085.8U Expired - Fee Related CN207815296U (en) | 2018-01-30 | 2018-01-30 | A kind of superheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207815296U (en) |
-
2018
- 2018-01-30 CN CN201820157085.8U patent/CN207815296U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180904 |