CN206246909U - Boiler slag dropping tube type metal expansion joint - Google Patents
Boiler slag dropping tube type metal expansion joint Download PDFInfo
- Publication number
- CN206246909U CN206246909U CN201621156269.XU CN201621156269U CN206246909U CN 206246909 U CN206246909 U CN 206246909U CN 201621156269 U CN201621156269 U CN 201621156269U CN 206246909 U CN206246909 U CN 206246909U
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- China
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- plate
- expansion joint
- bellows
- heat
- ring flat
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Abstract
The utility model discloses boiler slag dropping tube type metal expansion joint, including ring flat-plate, limiting plate, trap, inner tube 4, interlayer, heat-insulation layer, bellows, pull bar, adapter, inner panel, otic placode, inner tube upside is arranged ring flat-plate, downside is arranged portable plate, portable plate is extended transversely into limiting plate, if inner panel vertically upward, limiting plate, ring flat-plate is all provided with otic placode, on, lower ear plate sets pull bar connection, and set nut and fix, on bellows, lower end respectively with ring flat-plate, limiting plate is fixed, inside set heat-insulation layer, interlayer is set between heat-insulation layer and inner tube, bellows is compound, centre sets adapter connection, the utility model uses labyrinth seal, make to remain good in the process of running in expansion joint, smoothly Telescopic, extend the physical life of bellows, efficiently solve the potential safety hazard of boiler slag removal system.
Description
Technical field
The utility model is related to a kind of power generating equipment technical field, especially boiler slag dropping tube type metal expansion joint.
Background technology
Mostly using type metal expansion joint (hereinafter referred to as " expansion between the boiler slag removal mouthful and slag cooler of fluid bed power plant
Section ") transition is carried out, the features of the expansion joint are：During operation, 900 DEG C or so of high temperature furnace slag is subject for a long time, and it is necessary
The big displacement quantity of three-dimensional is born, very big gap occurs because displacement is larger, between guide shell and heat-insulation layer, easily
Cause slag fine ash to enter inside expansion joint, after the multiple shutdown process of boiler, expansion joint gap is blocked by fine ash, influence expansion joint
It is normal flexible, final bellows is drawn bad, and the safe operation to boiler slag removal system can produce fatal threat.
Utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, there is provided boiler slag dropping tube type metal expansion joint,
Including ring flat-plate, limiting plate, portable plate, inner tube 4, interlayer, heat-insulation layer, bellows, pull bar, adapter, inner panel, otic placode, inner tube upside
Plate is arranged, downside is arranged trap, and portable plate is extended transversely into limiting plate, if inner panel vertically upward, limiting plate, ring flat-plate are all provided with ear
Plate, upper and lower otic placode sets pull bar connection, and sets nut and fix, and bellows upper and lower end is fixed with ring flat-plate, limiting plate respectively, inside sets guarantor
Warm layer, sets interlayer between heat-insulation layer and inner tube, bellows is compound, and centre sets adapter connection, and the utility model uses labyrinth seal,
Make to remain in the process of running in expansion joint good, smoothly Telescopic, extend the physical life of bellows, effectively
Solve the potential safety hazard of boiler slag removal system.
To reach above-mentioned purpose, the technical solution of the utility model is：Boiler slag dropping tube type metal expansion joint, including ring flat-plate,
Limiting plate, portable plate, inner tube, interlayer, heat-insulation layer, bellows, pull bar, adapter, inner panel, otic placode, nut, said inner tube upside set
If ring flat-plate, downside is arranged trap, and the trap is extended transversely into limiting plate, if inner panel vertically upward, the limiting plate, ring flat-plate
1 is all provided with otic placode, and upper and lower otic placode sets pull bar connection, and sets nut and fix, the bellows upper and lower end respectively with ring flat-plate, limiting plate
It is fixed, heat-insulation layer is inside set, set interlayer between the heat-insulation layer and inner tube.
Further set, the bellows is compound, and centre sets adapter connection.
The beneficial effects of the utility model are：Mazy sealing structure, makes to be protected all the time in the process of running in expansion joint
Good, smoothly Telescopic is hold, extends the physical life of bellows, the safety for efficiently solving boiler slag removal system is hidden
Suffer from.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：It is ring flat-plate 1, limiting plate 2, portable plate 3, inner tube 4, interlayer 5, heat-insulation layer 6, bellows 7, pull bar 8, adapter 9, interior
Plate 10, otic placode 11, nut 12.
Specific embodiment
Below by embodiment, and with reference to accompanying drawing, the technical solution of the utility model is described in further detail.
As shown in figure 1, boiler slag dropping tube type metal expansion joint, including ring flat-plate 1, limiting plate 2, portable plate 3, inner tube 4, interlayer 5,
Heat-insulation layer 6, bellows 7, pull bar 8, adapter 9, inner panel 10, otic placode 11, nut 12, the upside of said inner tube 4 are arranged plate 1, downside set
If portable plate 3, the portable plate 3 is extended transversely into limiting plate 2, if inner panel 10 vertically upward, the limiting plate 2, ring flat-plate 1 are equal
If otic placode 11, upper and lower otic placode 11 sets pull bar 8 and connects, and sets nut 12 and fixes, the upper and lower end of the bellows 7 respectively with plate 1, limit
Position plate 2 is fixed, and inside sets heat-insulation layer 6, and interlayer 5 is set between the heat-insulation layer 6 and inner tube 4, and the utility model uses labyrinth seal, makes swollen
Good, smoothly Telescopic is remained in swollen section in the process of running, extends the physical life of bellows, effectively solved
The potential safety hazard of boiler slag removal system of having determined.
The bellows 7 is compound, and centre sets the connection of adapter 9.
Case study on implementation：
Conventional expansion joint inner tube typically inserts expansion joint using boiler slag discharging tube, and such structure is after expansion joint damage
, it is necessary to overall pulling down boiler slag discharging tube, greatly, difficulty of construction is high, in newly-designed structure, by inner tube for workload when being overhauled
4 is integral with expansion joint design, while extending to, expansion joint is outer to be welded to connect with scum pipe, it is ensured that later period maintenance is convenient, also protects
Card slag circulation is smooth.
Conventional expansion joint is no Seal Design between inner tube and heat-insulation layer, in newly-designed structure, be increased
Internal baffle 10, the Internal baffle 10 is close together with inner tube 4, while welding together with portable plate 3, is combined into a sealing gear
Circle, when expansion joint three-dimensional runs, the Sealing shield ring is moved with inner tube left-right and front-back, when expansion joint compresses, is in inner tube
Double containment state, effectively stops that fine ash enters inside expansion joint.
Conventional expansion joint is designed with a loose collar, the loose collar infinite place, is easily come off after temperature distortion, may
Cause to be stuck during expansion joint three-dimensional expansion joint, in newly-designed structure, to Sealing shield ring there is provided limiting plate 2, allow sealing
Back-up ring is moved in a fixed space, and being adjacent between Sealing shield ring and inner tube and sealing is effectively ensured, while preventing
The anti-channeling of slag fine ash.
The insulation of conventional expansion joint is that heat-preservation cotton is in bulk inside expansion joint, is easily produced between heat-preservation cotton after longtime running
Raw gap, after heat insulation effect reduction, outer corrugations pipe physical property receives influence.In newly-designed structure, heat-insulation layer is used
Steel wire and ceramic fiber cloth dual cladding, do integral by heat-insulation layer, and steel wire can increase the elasticity of heat-preservation cotton, long-term
Certain elasticity is still maintained after extruding, heat insulation effect is increased, the heat transfer of high-temperature medium is prevented, it is ensured that swelling red sandstone
Overtemperature, does not burn red.
At 900 DEG C or so, the hardware material of expansion joint has preferable temperature tolerance and wear-resisting to slag emission temperature
Property, the material of the utility model hardware is SUS310S, and thickness is not less than 12mm.
Heat-insulation layer uses aluminium silicate wool, and temperature can be completely cut off per the aluminium silicate wool of 1mm thickness for 4 DEG C, and slag temperature about exists
900 DEG C or so, it requires that the thickness of heat-insulation layer is not less than 250mm, unit weight >=128 ㎏/m3.
To prevent gap of the high temperature between heat-insulating heat-preserving material and expansion joint framework from spilling, it is desirable to heat-insulating heat-preserving material with
Accomplish gapless as far as possible between expansion joint framework, while certain decrement can be increased in heat-barrier material blanking.
Above improved technology scheme, in many lists such as Inner Mongol Jing Hai power plant, Shaanxi Huang Ling power plant, Shenhua Baima Power Plants
Transform and put into operation in position.After installing this product, the phenomenon such as leakage ash, bellows drawing crack that power plant is originally present no longer occurs, and makes
With having more than 4 years for longest-lived, the dreg removing system safe operation of large-scale fluidized bed boiler long-standing problem is thoroughly solved the problems, such as.
General principle of the present utility model and principal character, and advantage of the present utility model has been shown and described above.
The technical staff of the industry is also aware that the utility model is not limited by above-mentioned case study on implementation, above-mentioned case study on implementation and specification
Described in simply illustrate principle of the present utility model, do not depart from the utility model design category under the premise of, the utility model
Various changes and modifications are also had, these changes and improvements are both fallen within the range of claimed the utility model.This practicality is new
The claimed scope of type is by appending claims and its equivalent thereof.
Claims (2)
1. boiler slag dropping tube type metal expansion joint, it is characterised in that：Ring flat-plate (1), limiting plate (2), portable plate (3), inner tube (4), every
Layer (5), heat-insulation layer (6), bellows (7), pull bar (8), adapter (9), inner panel (10), otic placode (11), nut (12), said inner tube
(4) upside is arranged ring flat-plate (1), and downside is arranged portable plate (3), and the portable plate (3) is extended transversely into limiting plate (2), if vertically
Upward inner panel (10), the limiting plate (2), ring flat-plate (1) are all provided with otic placode (11), and upper and lower otic placode (11) sets pull bar (8) connection,
And nut (12) fixation is set, bellows (7) upper and lower end is fixed with ring flat-plate (1), limiting plate (2) respectively, inside sets heat-insulation layer
(6), interlayer (5) is set between the heat-insulation layer (6) and inner tube (4).
2. boiler slag dropping tube type metal expansion joint as claimed in claim 1, it is characterised in that：The bellows (7) is compound, centre
If adapter (9) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621156269.XU CN206246909U (en) | 2016-10-31 | 2016-10-31 | Boiler slag dropping tube type metal expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621156269.XU CN206246909U (en) | 2016-10-31 | 2016-10-31 | Boiler slag dropping tube type metal expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206246909U true CN206246909U (en) | 2017-06-13 |
Family
ID=58996369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621156269.XU Expired - Fee Related CN206246909U (en) | 2016-10-31 | 2016-10-31 | Boiler slag dropping tube type metal expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206246909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613203A (en) * | 2017-07-19 | 2018-10-02 | 夏华萍 | Biomass boiler |
-
2016
- 2016-10-31 CN CN201621156269.XU patent/CN206246909U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613203A (en) * | 2017-07-19 | 2018-10-02 | 夏华萍 | Biomass boiler |
| CN108800110A (en) * | 2017-07-19 | 2018-11-13 | 夏华萍 | boiler |
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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: 20170613 Termination date: 20211031 |