CN206709680U - A kind of Horizontal air preheater pipe and tube sheet attachment structure - Google Patents
A kind of Horizontal air preheater pipe and tube sheet attachment structure Download PDFInfo
- Publication number
- CN206709680U CN206709680U CN201720402438.1U CN201720402438U CN206709680U CN 206709680 U CN206709680 U CN 206709680U CN 201720402438 U CN201720402438 U CN 201720402438U CN 206709680 U CN206709680 U CN 206709680U
- Authority
- CN
- China
- Prior art keywords
- air preheater
- pipe
- tube sheet
- preheater pipe
- antiwear casing
- 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.)
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Links
- 238000003466 welding Methods 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Air Supply (AREA)
Abstract
A kind of Horizontal air preheater pipe and tube sheet attachment structure,It the utility model is related to a kind of pipe and tube sheet attachment structure,Weld seam can be by one when the utility model is in order to solve to use the preheater tube to tube sheet welding of bedroom air preheater in the prior art,Secondary Air side gas washes away and corroded,Commissure is cracked when corrosion phenomenon is serious,Damaged and leakage,The heat exchange efficiency of air preheater can not only be reduced,But also the problem of being hidden some dangers for for equipment safety operation,It includes air preheater pipe,Tube sheet,Flow-stopping plate and Antiwear casing,One end of air preheater pipe is inserted into air preheater pipe mounting hole,Welded with the madial wall of air preheater pipe mounting hole one end of air preheater pipe,Antiwear casing is machined with flow-stopping plate,The other end of Antiwear casing is inserted on the inwall of air preheater pipe,And Antiwear casing is arranged in air preheater pipe,Flow-stopping plate is set against tube sheet,The utility model is used for Horizontal air preheater pipe connection area.
Description
Technical field
It the utility model is related to a kind of pipe and tube sheet attachment structure, and in particular to a kind of Horizontal air preheater pipe and tube sheet
Attachment structure.
Background technology
It is to stretch out air preheater pipe in the air preheater tube to tube sheet welding structure design of bedroom air preheater
2~3mm of tube sheet is welded for air preheater thickness of pipe wall；Postwelding carries out air preheater pipe with tube sheet to paste swollen, enhancing
Sealing.Such a sealing structure is stronger, can effectively reduce the crevice corrosion that the flue gas from fume side is brought.But this knot
Weld seam is exposed to primary and secondary air side by structure, and weld seam can be washed away and corrode by primary and secondary air side gas, in corrosive medium
When stronger, the corrosion phenomenon of weld seam is more serious.In actual motion, commissure is cracked, damaged, leakage situation when have hair
It is raw, the heat exchange efficiency of air preheater can be not only reduced, can also be that the safe operation of equipment hides some dangers for.
Utility model content
When the utility model is in order to solve using the preheater tube to tube sheet welding of bedroom air preheater in the prior art
Weld seam can be washed away and corroded by primary and secondary air side gas, and commissure is cracked, damaged and let out when corrosion phenomenon is serious
Dew, the problem of not only reducing the heat exchange efficiency of air preheater, but also can be hidden some dangers for for equipment safety operation, Jin Erti
For a kind of Horizontal air preheater pipe and tube sheet attachment structure.
The utility model is for the technical scheme used that solves the above problems：
It includes air preheater pipe, tube sheet, flow-stopping plate and Antiwear casing, and the installation of air preheater pipe is machined with tube sheet
Hole, one end of air preheater pipe is inserted into air preheater pipe mounting hole, and one end of air preheater pipe and air are pre-
Welding gap is left between hot device pipe mounting hole, one end of air preheater pipe is welded with the madial wall of air preheater pipe mounting hole
Connect, Antiwear casing is machined with flow-stopping plate, one end and the flow-stopping plate of Antiwear casing are fixed as one, and Antiwear casing is along its length
The plane of central axis flow-stopping plate set, and Antiwear casing place relative with flow-stopping plate is machined with through hole on the flow-stopping plate,
The other end of Antiwear casing is inserted on the inwall of air preheater pipe, and Antiwear casing is arranged in air preheater pipe, baffle
Plate is set against tube sheet.
The beneficial effects of the utility model are：
1st, the Type of Welding of air preheater pipe internal withdraw type structure, will not closely be sent out excessively because of the spacing of air preheater pipe
Raw weld seam coincidence etc. reduces the phenomenon of welding quality.Welding difficulty is also reduced simultaneously, improves operating efficiency.
2nd, under such a structure, Antiwear casing and flow-stopping plate all cover the weld seam of air preheater pipe and tube sheet, make weldering
Seam has prevented the contact from primary and secondary air side gas with washing away, has obtained weld seam in a kind of environment for being similar to closing
Fabulous protection, so as to ensure that welding quality, air preheater pipe replacement frequency is reduced, improves the heat exchange of air preheater
Efficiency, the continuous operation for safeguarding air preheater.
3rd, the utility model has that simple in construction, convenient welding, effect are good, meet design structure and intensity requirement, be easy to
Operation, the features such as structure is reliable, safe.
Brief description of the drawings
Fig. 1 is the utility model overall structure front view.
Embodiment
Embodiment one：Illustrate present embodiment, a kind of Horizontal air preheater pipe of present embodiment with reference to Fig. 1
With tube sheet attachment structure, it includes air preheater pipe 1, tube sheet 2, flow-stopping plate 3 and Antiwear casing 4, air is machined with tube sheet 2
Preheater tube mounting hole 2-1, one end of air preheater pipe 1 is inserted into air preheater pipe mounting hole 2-1, and air preheat
Welding gap, one end of air preheater pipe 1 and air are left between one end of device pipe 1 and air preheater pipe mounting hole 2-1
Preheater tube mounting hole 2-1 madial wall is welded, and Antiwear casing 4, one end of Antiwear casing 4 and baffle are machined with flow-stopping plate 3
Plate 3 is fixed as one, and the plane of the central axis flow-stopping plate 3 of Antiwear casing 4 along its length is set, and is located at flow-stopping plate 3
Upper Antiwear casing 4 is machined with through hole 5 with flow-stopping plate 3 with respect to place, and the other end of Antiwear casing 4 is inserted in the interior of air preheater pipe 1
On wall, and Antiwear casing 4 is arranged in air preheater pipe 1, and flow-stopping plate 3 is set against tube sheet 2.
Embodiment two：Illustrate present embodiment, a kind of Horizontal air preheater pipe of present embodiment with reference to Fig. 1
With tube sheet attachment structure, the expanded joint of Antiwear casing 4 is arranged in air preheater pipe 1, and this structure is designed in present embodiment
The weld seam between air preheater pipe 1 and tube sheet 2 can be protected from corrosion, the heat exchange efficiency of air preheater is improved, extend
Its service life etc. acts on, other identical with embodiment one.
Embodiment three：Illustrate present embodiment, a kind of Horizontal air preheater pipe of present embodiment with reference to Fig. 1
With tube sheet attachment structure, air preheater pipe mounting hole 2-1 one end is machined with chamfering 2-2, this is designed in present embodiment
Individual structure facilitates air preheater pipe 1 with being assembled in the factory of tube sheet 2, other identical with embodiment one.
Embodiment four：Illustrate present embodiment, a kind of Horizontal air preheater pipe of present embodiment with reference to Fig. 1
With tube sheet attachment structure, the section of through hole 5 is conical through-hole, and one end close to Antiwear casing 4 is small end, away from Antiwear casing 4
One end be big end, being designed to that this structure can open in present embodiment drains to primary and secondary air, reduces its windage, carries
The effect of the heat exchange efficiency of high air preheater, it is other identical with embodiment one.
Embodiment five：Illustrate present embodiment, a kind of Horizontal air preheater pipe of present embodiment with reference to Fig. 1
With tube sheet attachment structure, the length in welding gap between one end of air preheater pipe 1 and air preheater pipe mounting hole 2-1
For 2-3mm, it is designed to that this structure can ensure its weld strength in present embodiment, it is other with the phase of embodiment one
Together.
Embodiment six：Illustrate present embodiment, a kind of Horizontal air preheater pipe of present embodiment with reference to Fig. 1
With tube sheet attachment structure, the external diameter of air preheater pipe 1 is 40mm, the internal diameter of air preheater pipe 1 for 36mm it is other with it is specific
Embodiment one is identical.
Embodiment seven：Illustrate present embodiment, a kind of Horizontal air preheater pipe of present embodiment with reference to Fig. 1
With tube sheet attachment structure, the external diameter of Antiwear casing 4 is 36mm, and the internal diameter of Antiwear casing 4 is 32mm, other and embodiment
One is identical.
Claims (7)
1. a kind of Horizontal air preheater pipe and tube sheet attachment structure, it is characterised in that：It includes air preheater pipe (1), pipe
Plate (2), flow-stopping plate (3) and Antiwear casing (4), air preheater pipe mounting hole (2-1), air preheat are machined with tube sheet (2)
One end of device pipe (1) is inserted into air preheater pipe mounting hole (2-1), and one end of air preheater pipe (1) and air are pre-
Welding gap, one end and the air preheater pipe mounting hole of air preheater pipe (1) are left between hot device pipe mounting hole (2-1)
The madial wall of (2-1) is welded, and Antiwear casing (4) is machined with flow-stopping plate (3), and one end of Antiwear casing (4) and flow-stopping plate (3) are solid
It is set to one, the plane of the central axis flow-stopping plate (3) of Antiwear casing (4) along its length is set, and is located at flow-stopping plate (3)
Upper Antiwear casing (4) is machined with through hole (5) with flow-stopping plate (3) with respect to place, and the other end of Antiwear casing (4) is inserted in air preheater
On the inwall for managing (1), and Antiwear casing (4) is arranged in air preheater pipe (1), and flow-stopping plate (3) is set against tube sheet (2).
2. a kind of Horizontal air preheater pipe and tube sheet attachment structure according to claim 1, it is characterised in that：Antiwear casing
(4) expanded joint is arranged in air preheater pipe (1).
3. a kind of Horizontal air preheater pipe and tube sheet attachment structure according to claim 1, it is characterised in that：Air preheat
One end of device pipe mounting hole (2-1) is machined with chamfering (2-2).
4. a kind of Horizontal air preheater pipe and tube sheet attachment structure according to claim 1, it is characterised in that：Through hole (5)
Section be conical through-hole, be small end close to one end of Antiwear casing (4), one end away from Antiwear casing (4) is holds greatly.
5. a kind of Horizontal air preheater pipe and tube sheet attachment structure according to claim 1, it is characterised in that：Air preheat
The length that gap is welded between one end of device pipe (1) and air preheater pipe mounting hole (2-1) is 2-3mm.
6. a kind of Horizontal air preheater pipe and tube sheet attachment structure according to claim 1, it is characterised in that：Air preheat
The external diameter of device pipe (1) is 40mm, and the internal diameter of air preheater pipe (1) is 36mm.
7. a kind of Horizontal air preheater pipe and tube sheet attachment structure according to claim 1, it is characterised in that：Antiwear casing
(4) external diameter is 36mm, and the internal diameter of Antiwear casing (4) is 32mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720402438.1U CN206709680U (en) | 2017-04-17 | 2017-04-17 | A kind of Horizontal air preheater pipe and tube sheet attachment structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720402438.1U CN206709680U (en) | 2017-04-17 | 2017-04-17 | A kind of Horizontal air preheater pipe and tube sheet attachment structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206709680U true CN206709680U (en) | 2017-12-05 |
Family
ID=60456172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720402438.1U Active CN206709680U (en) | 2017-04-17 | 2017-04-17 | A kind of Horizontal air preheater pipe and tube sheet attachment structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206709680U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827189A (en) * | 2018-12-26 | 2019-05-31 | 上海齐耀热能工程有限公司 | Preheater |
-
2017
- 2017-04-17 CN CN201720402438.1U patent/CN206709680U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109827189A (en) * | 2018-12-26 | 2019-05-31 | 上海齐耀热能工程有限公司 | Preheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Connection Structure between Horizontal Air Preheater Tube and Tube Plate Effective date of registration: 20231219 Granted publication date: 20171205 Pledgee: Harbin Kechuang Financing Guarantee Co.,Ltd. Pledgor: HARBIN HAGUO BOILER ENGINEERING TECHNOLOGY CO.,LTD. Registration number: Y2023230000109 |