CN106639501A - D-shaped sleeve chimney - Google Patents
D-shaped sleeve chimney Download PDFInfo
- Publication number
- CN106639501A CN106639501A CN201710045226.7A CN201710045226A CN106639501A CN 106639501 A CN106639501 A CN 106639501A CN 201710045226 A CN201710045226 A CN 201710045226A CN 106639501 A CN106639501 A CN 106639501A
- Authority
- CN
- China
- Prior art keywords
- shape
- inner core
- chimney
- outer tube
- sleeve chimney
- 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.)
- Pending
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/28—Chimney stacks, e.g. free-standing, or similar ducts
Abstract
The invention discloses a D-shaped sleeve chimney comprising an outer cylinder and two inner cylinders. The D-shaped sleeve chimney is characterized in that the two inner cylinders are two independent D-shaped inner cylinders and symmetrically arranged in the outer cylinder with the horizontal cross section being round. The requirement of function separation of the inner-outer cylinder of a general double-inner-cylinder chimney is met, and the using requirements of various operation conditions of a power plant are not affected. Two independent D shapes of the D-shaped sleeve chimney form an inner cylinder horizontal section approximate to a 'round'. The two D-shaped inner cylinders are independent, so that two units served by the two inner cylinders can operate independently, large and nonuniform temperature internal force, produced at the time of independent operating of a single unit, of two non-independent semicircular inner cylinders is avoid, and meanwhile, the coefficient of 'utilization efficiency' of the chimney is increased by a large margin.
Description
Technical field
The present invention relates to a kind of " D " shape sleeve chimney, belongs to chimney technical field.
Background technology
At present in the power plant construction of China, mostly two units share an outer tube chimney, and a unit correspondence
One smoke evacuation inner core.In order to improve design level, realization directly bear the external loads such as wind with directly bear flue gas effect this
Two kinds of loads of different nature or effect are undertaken respectively by different structure, and meet the maintenance of different useful life and safeguard will
Ask, adopt horizontal cross-section both at home and abroad generally and bear for circular armored concrete outer tube the deadweight of wind load, earthquake and inner core with
Horizontal displacement etc. is acted on, and adopts two horizontal cross-sections to have high temperature with corrosiveness dedicated for discharge for circular inner core
Flue gas, it is achieved thereby that the function of inside and outside cylinder is separated, and two inner core independent operatings under different operating modes, this is in common double
The major advantage of cylinder chimney.
Although common double internal cylinder chimney functionally possesses above-mentioned advantage, because two inner core arrangement modes determine that it is put down
Face arranges that profile is：One direction size exceedes the twice of another vertical direction size, so as to cause outer tube horizontal cross-section have compared with
Large space is wasted, i.e., the ratio very little of two inner core area of section sums (referred to as " effective area ") and outer tube area of section,
Namely " utilization ratio " coefficient of outer tube is very low.
As shown in figure 1, being provided with two inner cores 2, the space between the inwall of outer tube 1 and two outer walls of circular inner tube 2 in outer tube 1
Can not sufficiently utilize.The value of clear distance a specifies value by multitube chimney between inner core and outer tube 1, i.e., be not preferably less than 750mm.
Separate discounting for inner/outer tube function, then two units then share a chimney, and this chimney is referred to as monotubular
Chimney, its " utilization ratio " is maximum, and " utilization ratio " coefficient reaches 1.0 levels.Therefore, any sleeve chimney and single-drum chimney
Compare, its " utilization ratio " coefficient is respectively less than 1.0.
Common double internal cylinder chimney " utilization ratio " coefficient is relatively low, in the case of identical " effective area ", in addition to causing
Increasing considerably for cylinder sectional dimension is outer, while because of chimney ring wind bending moment and square proportional relation of section radius, causing
Chimney top barrel wall thickness is also additionally significantly increased, and in turn results in the material of the armored concrete outer tube of ground above section
Consumption and floor space increase, and increasing substantially for foundation engineering amount is caused indirectly so that whole chimney construction duration and engineering
Investment amplification compared with single-drum chimney is larger.
Two current dependent semicircle inner cores, as shown in Fig. 2 it is provided with the inner core of a circle in outer tube 1, at this
Separated by dividing plate in the middle of inner core, be divided into two dependent semicircle inner cores 3, the value of a specifies value by sleeve chimney, i.e., unsuitable
Less than 1000mm；Wherein, the area of section A2 of dependent semicircle inner core 3 is identical with the area of section A1 of circular inner tube 2.The knot
Although structure solves the problems, such as that outer tube horizontal cross-section has larger space to be wasted, but due to two dependent semicircle inner core only
It is to be separated by a plate, when separate unit stove unit independent operating, so as to cause the temperature in two inner cores to influence each other, produces
Huge uneven temperature internal force.
The content of the invention
The technical problem to be solved in the present invention is：There is provided " D " shape that simply footpath is little outside one kind, " utilization ratio " coefficient is high
Sleeve chimney, solves that common double internal cylinder chimney " utilization ratio " coefficient is low, dependent semicircle inner core is produced in uneven temperature
The problem of power.
In order to solve above-mentioned technical problem, the technical scheme is that there is provided a kind of " D " shape sleeve chimney including outer
Cylinder and two inner cores, it is characterised in that two described inner cores are two separate " D " shape inner cores, two " D " shape inner cores
It is in circular outer tube to be arranged symmetrically in level cross-sectionn.
Preferably, the size of two described " D " shape inner cores, specification are same or like.
Preferably, " D " the shape inner core horizontal cross-section described in two is in approximate half-circular, and the vertical of " D " shape inner core can be with
Independence and freedom expansion is flexible.
Preferably, it is equipped with inner core chamfering on the angle of " D " the shape inner core described in two.
Preferably, the level for limiting the inner core horizontal direction displacement of " D " shape is provided with described outer tube and only shakes device,
The displacement of " D " shape inner core horizontal direction is only shaken device and is limited by each layer of chimney.
Preferably, described " D " shape inner core is provided with expansion joint.
Preferably, described " D " shape inner core is steel inner cylinder or glass reinforced plastic inner cylinder.
Preferably, described " D " shape inner core is provided with corrosion-proof lining and outer heat preservation system.
Preferably, described " D " shape inner core may also be employed whole using overall self-supporting or the support pattern of segmentation self-supporting
The support pattern of body or sectional suspension.
Preferably, when described outer tube adopts steel outer tube, " D " shape inner core to be smaller than 1000mm with the spacing of outer tube.
The outer footpath simply of the present invention is little, meets the detached needs of inner/outer tube function of common double internal cylinder chimney, and not
Affect the use requirement of the various operating conditions of power plant.Two independence " D " shapes of the present invention constitute approximate " circle " inner core
Horizontal cross-section, two " D " shape inner cores are independent, and two units that two such inner core is serviced can be with independent operating, it is to avoid
Two dependent semicircle inner cores because of huge uneven temperature internal force produced during separate unit stove unit independent operating, while
Realize increasing substantially for chimney " utilization ratio " coefficient.
Description of the drawings
Fig. 1 is the structural section schematic diagram of current common double internal cylinder chimney；
Fig. 2 is the structural section schematic diagram of dependent semicircle sleeve chimney；
Fig. 3 is the structural section schematic diagram of " D " shape sleeve chimney.
Specific embodiment
To become apparent the present invention, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
The present invention is a kind of " D " shape sleeve chimney, as shown in figure 3, it includes outer tube 1 and two inner cores, two inner cores are
Two separate " D " shape inner cores 4, the size of two " D " shape inner cores 4, specification are same or like.Two " D " shape inner cores 4 pairs
It is called that two " D " shape inner cores 4 are separate in circular outer tube 1 to be arranged in level cross-sectionn, and its horizontal cross-section is in approximate half
Circle, it vertically can be flexible with independence and freedom expansion.Pass through apart from b satisfaction supportings, installation, personnel between two " D-shaped " inner cores 4
With maintenance requirement；Between between " D-shaped " inner core 4 and outer tube 1 apart from a in addition to satisfaction supporting, installation, personnel pass through with maintenance requirement,
Vertical traffic requirement should still be met, inner core chamfering is equipped with the angle of two " D " shape inner cores 4, the radius r of inner core chamfering meets drop
Low temperature stress concentration and requirement for anticorrosion.According to design needs, level can be set along chimney vertical differing heights and only shake device, i.e.,
The level for limiting the horizontal direction displacement of " D " shape inner core 4 is provided with outer tube 1 and only shakes device, the horizontal direction of " D " shape inner core 4
Displacement is only shaken device and is limited by each layer of chimney.
Wherein：
" D " shape inner core 4 may also be employed entirety or sectional suspension using overall self-supporting or the support pattern of segmentation self-supporting
Support pattern
" D " shape inner core 4 can be alternatively glass reinforced plastic inner cylinder for steel inner cylinder.
" D " shape inner core 4 can arrange or not set outer heat preservation system using different corrosion-proof linings.
" D " shape inner core 4 can arrange vertical expansion joint in diverse location as needed.
The radius of curvature of " D-shaped " inner core 4 can be true by the flue gas circulation area principle equal with common inner core area of section
Fixed, the design of two independence " D-shaped " inner cores 4 of the present invention is ensureing the situation that flue gas circulation area and flue gas flow resistance do not increase
Under, while chimney " utilization ratio " coefficient is improved, can again keep two to greatest extent using the space in outer tube 1
The independent operating of " D-shaped " inner core 4, reduces the diameter of outer tube 1, can so reduce the floor space of chimney, reduces engineering and makes
Valency, shortens construction period.
The characteristics of present invention is circular according to the horizontal cross-section of outer tube 1, by simple horizontal cross-section in two two independences are designed as
The form of " D " shape inner core 4, its horizontal combination section is in approximate " circle " so that the inner space of outer tube 1 is utilized effectively, from
And increase substantially chimney " utilization ratio " coefficient.Each independent horizontal section area of " D " shape inner core 4 and typical circular inner core
Area equation, and two independent " D " shape inner cores 4 can meet different working condition requirements, can be with single fighter independent operating.
The value of clear distance a specifies value by concrete outer tube sleeve chimney between " D-shaped " inner core 4 and outer tube 1 of the present invention,
Be not preferably less than 1000mm, when outer tube can be not limited for steel outer tube, i.e., when outer tube 1 is using steel outer tube, " D " shape inner core 4 with it is outer
The spacing of cylinder 1 is smaller than 1000mm；Wherein, the area of section A1 of circular inner tube 2, the area of section of dependent semicircle inner core 3
The area of section A3 all sames of letter 4 in A2 and " D " shape.
Claims (10)
1. a kind of " D " shape sleeve chimney, including outer tube (1) and two inner cores, it is characterised in that two described inner cores are two
Separate " D " shape inner core (4), it is in circular outer tube (1) that two " D " shape inner cores (4) are arranged symmetrically in level cross-sectionn.
2. one kind " D " shape sleeve chimney as claimed in claim 1, it is characterised in that two described " D " shape inner cores (4)
Size, specification are same or like.
3. one kind " D " shape sleeve chimney as claimed in claim 1, it is characterised in that " D " shape inner core (4) water described in two
Plane section is in approximate half-circular, and the vertical of " D " shape inner core (4) can be flexible with independence and freedom expansion.
4. one kind " D " shape sleeve chimney as claimed in claim 1, it is characterised in that " D " the shape inner core (4) described in two
Inner core chamfering is equipped with angle.
5. one kind " D " shape sleeve chimney as claimed in claim 1, it is characterised in that is provided with for limiting in described outer tube (1)
The level of system " D " shape inner core (4) horizontal direction displacement only shakes device, and the displacement of " D " shape inner core (4) horizontal direction is subject to chimney each
Layer only shakes the restriction of device.
6. one kind " D " shape sleeve chimney as claimed in claim 1, it is characterised in that described " D " shape inner core (4) is provided with
Expansion joint.
7. one kind " D " shape sleeve chimney as claimed in claim 1, it is characterised in that described " D " shape inner core (4) is in steel
Cylinder or glass reinforced plastic inner cylinder.
8. one kind " D " shape sleeve chimney as claimed in claim 1, it is characterised in that described " D " shape inner core (4) is provided with
Corrosion-proof lining and outer heat preservation system.
9. one kind " D " shape sleeve chimney as claimed in claim 1, it is characterised in that described " D " shape inner core (4) is using whole
The support pattern of body self-supporting or segmentation self-supporting, may also be employed the support pattern of entirety or sectional suspension.
10. one kind " D " shape sleeve chimney as claimed in claim 1, it is characterised in that outside described outer tube (1) is using steel
Cylinder, " D " shape inner core (4) is smaller than 1000mm with the spacing of outer tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710045226.7A CN106639501A (en) | 2017-01-19 | 2017-01-19 | D-shaped sleeve chimney |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710045226.7A CN106639501A (en) | 2017-01-19 | 2017-01-19 | D-shaped sleeve chimney |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106639501A true CN106639501A (en) | 2017-05-10 |
Family
ID=58841258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710045226.7A Pending CN106639501A (en) | 2017-01-19 | 2017-01-19 | D-shaped sleeve chimney |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106639501A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331428A (en) * | 2018-03-21 | 2018-07-27 | 苏州泰高烟囱科技有限公司 | A kind of multicomputer sleeve chimney |
| CN111962956A (en) * | 2020-08-07 | 2020-11-20 | 上海必立结构设计事务所有限公司 | Method for improving D-shaped inner cylinder chimney |
| CN112711787A (en) * | 2020-12-30 | 2021-04-27 | 江南大学 | Structural design method under wind load action of large height-diameter ratio self-supporting stainless steel chimney |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087155A (en) * | 1993-11-19 | 1994-05-25 | 骆锡耀 | Fan-shaped cellular-type steel stack such as full circle and air-rise upside-down job practices thereof |
| JP2000054690A (en) * | 1998-08-04 | 2000-02-22 | Nkk Corp | Chimney |
| CN201865399U (en) * | 2010-11-22 | 2011-06-15 | 江苏省电力设计院 | Chimney with double inner barrels |
| CN202152555U (en) * | 2011-06-10 | 2012-02-29 | 中国电力工程顾问集团东北电力设计院 | Double-barreled chimney with section-type hung steel inner cylinder |
| CN203867271U (en) * | 2014-04-15 | 2014-10-08 | 江西省电力设计院 | Straight reinforced double-ellipsoid combined chimney |
-
2017
- 2017-01-19 CN CN201710045226.7A patent/CN106639501A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1087155A (en) * | 1993-11-19 | 1994-05-25 | 骆锡耀 | Fan-shaped cellular-type steel stack such as full circle and air-rise upside-down job practices thereof |
| JP2000054690A (en) * | 1998-08-04 | 2000-02-22 | Nkk Corp | Chimney |
| CN201865399U (en) * | 2010-11-22 | 2011-06-15 | 江苏省电力设计院 | Chimney with double inner barrels |
| CN202152555U (en) * | 2011-06-10 | 2012-02-29 | 中国电力工程顾问集团东北电力设计院 | Double-barreled chimney with section-type hung steel inner cylinder |
| CN203867271U (en) * | 2014-04-15 | 2014-10-08 | 江西省电力设计院 | Straight reinforced double-ellipsoid combined chimney |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331428A (en) * | 2018-03-21 | 2018-07-27 | 苏州泰高烟囱科技有限公司 | A kind of multicomputer sleeve chimney |
| CN111962956A (en) * | 2020-08-07 | 2020-11-20 | 上海必立结构设计事务所有限公司 | Method for improving D-shaped inner cylinder chimney |
| CN112711787A (en) * | 2020-12-30 | 2021-04-27 | 江南大学 | Structural design method under wind load action of large height-diameter ratio self-supporting stainless steel chimney |
| CN112711787B (en) * | 2020-12-30 | 2024-03-19 | 江南大学 | Structural design method under wind load action of large-height-diameter-ratio self-supporting stainless steel chimney |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170510 |
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| WD01 | Invention patent application deemed withdrawn after publication |