CN204153800U - Self sealss chimney expanding ring - Google Patents
Self sealss chimney expanding ring Download PDFInfo
- Publication number
- CN204153800U CN204153800U CN201420571504.4U CN201420571504U CN204153800U CN 204153800 U CN204153800 U CN 204153800U CN 201420571504 U CN201420571504 U CN 201420571504U CN 204153800 U CN204153800 U CN 204153800U
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- China
- Prior art keywords
- expanding ring
- sealing
- chimney
- seal
- section
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- 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 - Lifetime
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- 241000283216 Phocidae Species 0.000 title claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 238000009434 installation Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005987 sulfurization reaction Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 19
- 239000010959 steel Substances 0.000 abstract description 19
- 230000006835 compression Effects 0.000 abstract description 10
- 238000007906 compression Methods 0.000 abstract description 10
- 239000000725 suspension Substances 0.000 abstract description 7
- 239000003546 flue gas Substances 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001061264 Astragalus Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Chimneys And Flues (AREA)
Abstract
The utility model provides a kind of self sealss chimney expanding ring, it comprises expanding ring body, the vertical section of described expanding ring body comprises three sections that arrange continuously, what be positioned at two ends is installation seal section, what be positioned at centre is telescopic section, the vertical section of described telescopic section is V-shaped or W shape, it is flexible that this shape can make sealing expanding ring realize free single-candidate, namely Tension and Compression all can realize identical maximum, thus suspension steel inner cylinder can be made no matter when to shut down all ensure its free-extension and sealing, guarantee unit safety operation, and can cost be reduced, reduction of erection time.After adopting this structure shape, the folding of sealing expanding ring freely, realizes maximum tension and the compression of single-candidate, and the torsional deformation of rubber does not occur.The sealing surface of described two installation seal sections is respectively arranged with seal convexity, and seal convexity can ensure that its convexconcave part of out-of-flatness flange is fitted completely with installation seal section, enhances sealing intensity.The good looking appearance of this expanding ring, long service life.
Description
Technical field
The utility model relates to a kind of self sealss chimney expanding ring, in the industries such as electric power, metallurgy and building materials, can realize from primary seal and the flexible requirement of chimney can be met.
Background technology
Along with the propelling of China's energy-saving and emission-reduction, wet desulphurization has become the main technique that China's power-plant flue gas is administered.Flue gas after desulfurization, high humidity, corrosivity are strong, and as the pipeline of independent supplied flue gases, smoke evacuation steel inner cylinder is also promoted the use of gradually in new power plant construction.At present, smoke evacuation steel inner cylinder mainly contains self-supporting and suspension type two type, and wherein, the cost advantages such as suspension type is few, lightweight with its overall steel using amount, mounting cost is low, start gradually to promote in newly-built thermal power plant.Due to the elongation in the steel inner cylinder length that the heat expansion of steel inner cylinder itself and shrinkage etc. produce with shorten distortion, its displacement will be absorbed by sealing expanding ring under the prerequisite ensureing sealing, and the sealing expanding ring supporting with it has become important auxiliary products.Because the diameter dimension of this product is generally at 7 ~ 10 meters, and installation site is in the high empty position of 35 meters, 70 meters, 135 meters, about 170 meters, and this production difficulty is large, and use location is hidden, goes wrong in early days and not easily finds.Later stage causes greater loss to client when finding, and do not shut down and cannot overhaul, user more and more payes attention to the practical effect of this product.
At present, the sealing expanding ring that suspension steel inner cylinder is selected mainly contains following three kinds of versions: (one) telescopic sealing expanding ring; (2) flat-crushing type sealing expanding ring; (3) flanging type sealing expanding ring.
Above three kinds of steel inner cylinder sealing expanding rings used also exist some inconvenience in installing and using and safeguarding, result of use is bad, does not reach designing requirement.
(1) telescopic sealing expanding ring: this product structure form construction comparatively difficulty, inner sealing ring damages and cannot directly change, and must remove outside stiffening ring.Meanwhile, sealing place at top cannot carry out effective dynamic seal (packing).
(2) flat-crushing type sealing expanding ring: sealing expanding ring adopts dull and stereotyped banded rubber blending to be bolted to the two ends up and down of pipeline; When smoke discharging pipe temperature distortion, rubber slab bends and absorbs distortion with the compensation effect reaching pipeline.There is following problem in this version: a) flange base exists gap in actual use, easily causes the downward seepage of acid solution; B) when rubber forms annulus sealing, all adopt sealant sealing, this part thickness increases, and when fluid sealant solidifies, this position is hardening; When pipe deforming, the bending camber line that produces in this position tears, and becomes leak source hidden danger; C) astragal owing to surrounding with rubber slab is planar structure, and when being subject to the affecting of negative pressure in alternating compression and smoke exhaust barrel, easily curve inwardly, be subject to washing away of inner core updraft, accelerate the thinning and aging of its product, intensity reduces.In sum, this version its effect in the middle of reality uses is unsatisfactory, does not reach designing requirement.
(3) flanging type sealing expanding ring: make large sealing flange at the scene in installation and usually adopt Segmented butt-welding, its weld mostly is convex-concave surface, and burnishing surface is comparatively coarse.When the flange flange of sealing expanding ring is connected with the large-sized flange of its steel inner cylinder end, its sealing effectiveness is poor, easy seepage.
In sum; above three kinds of its profiles of sealing expanding ring used at present are all similar to curved circular tubular; the compression that chimney internal cylinder heat expansion produces can be born; when unit be in shut down winter time; the stretching that chimney internal cylinder shrinkage produces cannot be met; conventional seals expanding ring easily ftractures or breaks, the weak point that Here it is existing for prior art.
Utility model content
The technical problems to be solved in the utility model; be exactly for the deficiency existing for prior art; and a kind of technical scheme of self sealss chimney expanding ring is provided, adopt this programme that suspension steel inner cylinder can be made no matter when to shut down and all can ensure its free-extension and sealing, guarantee unit safety operation.
This programme is achieved by the following technical measures: this self sealss chimney expanding ring comprises expanding ring body, the vertical section of described expanding ring body comprises three sections that arrange continuously, wherein, what be positioned at two ends is installation seal section, what be positioned at centre is telescopic section, the vertical section of described telescopic section is V-shaped or W shape, and the sealing surface of described two installation seal sections is respectively arranged with seal convexity.
Above-mentioned two install seal sections is parallel to each other, and with horizontal plane be in a ratio of upwards 10 ° or 15 ° tilt.
Above-mentioned seal convexity is circular projection.
Above-mentioned installation seal section is at least provided with a circle seal convexity.
Above-mentioned installation seal section is provided with two circle seal convexities.
Above-mentioned expanding ring body adopts sulfuration process global formation.
The thickness of above-mentioned expanding ring body is 10 mm, and non junction.
The beneficial effect of this programme can be learnt according to describing of such scheme; in this self sealss chimney expanding ring; the vertical section of described telescopic section is V-shaped or W shape; it is flexible that this shape can make sealing expanding ring realize free single-candidate; namely Tension and Compression all can realize identical maximum; thus suspension steel inner cylinder can be made no matter when to shut down all ensure its free-extension and sealing; guarantee unit safety operation; and cost, reduction of erection time can be reduced, and sealing expanding ring of the prior art can only realize larger compression and less stretching and cannot realize single-candidate and stretch.After adopting this structure shape, the folding of sealing expanding ring freely, realizes maximum tension and the compression of single-candidate, and the torsional deformation of rubber does not occur.The sealing surface of described two installation seal sections is respectively arranged with seal convexity, and seal convexity can ensure that its convexconcave part of out-of-flatness flange is fitted completely with installation seal section, enhances sealing intensity.The good looking appearance of this expanding ring, long service life.As can be seen here, the utility model compared with prior art, has substantive distinguishing features and progress, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Fig. 1 is the structural representation of background technology middle sleeve formula sealing expanding ring.
Fig. 2 is the structural representation of flat-crushing type sealing expanding ring in background technology.
Fig. 3 is the structural representation of flanging type sealing expanding ring in background technology.
Fig. 4 is the structural representation of the utility model detailed description of the invention one.
Fig. 5 is the structural representation of the utility model detailed description of the invention two.
Fig. 6 is the partial enlarged drawing in A portion in Fig. 5.
In figure, 1-installs seal section, 2-expanding ring body, 3-telescopic section, 4-steel inner cylinder, 5-seal convexity, 6-sealing surface.
Detailed description of the invention
For the technical characterstic of this programme can be clearly demonstrated, below by detailed description of the invention, and in conjunction with its accompanying drawing, this programme is set forth.
Self sealss chimney expanding ring, as shown in the figure, it comprises expanding ring body 2, the vertical section of described expanding ring body 2 comprises three sections that arrange continuously, and wherein, what be positioned at two ends is installation seal section 1, what be positioned at centre is telescopic section 3, the vertical section of described telescopic section 3 is in the shape of the letter V or W shape from seeing outside to inside, and the expanding ring of this structure can free single-candidate stretch, and namely Tension and Compression all can realize identical maximum.Illustrate: in the power plant of northern China, for the chimney that diameter is 8 meters, chimney material is Q235, wherein one section of point of segment distance is the steel inner cylinder 4 of 150 m, installing temperature is 20 DEG C, after unit operation, temperature is 80 DEG C, and its steel inner cylinder 4 stretch value (i.e. the compressed value of expanding ring) produced is: total length × variations in temperature × thermal coefficient of expansion=150m × (80-20) DEG C × 0.012=108mm; As winter shuts down, its minimum environment temperature is-40 DEG C, and its steel inner cylinder 4 shrinkage value (i.e. the tension values of expanding ring) produced is: total length × variations in temperature × thermal coefficient of expansion=150 m × 20-(-40) } DEG C × 0.012=108mm.This expanding ring can realize single-candidate completely and stretch, and expanding ring of the prior art can only realize larger compression and less stretching, and it is flexible to realize single-candidate.
The sealing surface 6 of described two installation seal sections 1 is respectively arranged with seal convexity 5, and sealing protruding 6 is circular projection, installs on seal section 1 and is at least provided with a circle seal convexity 5, preferably on installation seal section 1, is provided with two circle seal convexities 5.
Two install seal sections 1 is parallel to each other, and with horizontal plane be in a ratio of upwards 10 ° or 15 ° tilt, its waterproof effect of this version is good, and handling ease.
Expanding ring body 2 adopts sulfuration process global formation, and the thickness of expanding ring body 2 is 10 mm, and non junction.This version can ensure that the convexconcave part of out-of-flatness flange can be fitted completely with expanding ring, is convenient to compress for mounting flange, and after compressing, sealing surface is linear sealing, and its sealing intensity is the several times of sealing surface.
Its large mold producing employing of this self sealss chimney expanding ring is made by numerical control machining center, and it can make expanding ring overall sulfidization molding at high temperature under high pressure, and any surface finish, good looking appearance, intensity is high.The appearance and size of this expanding ring and face shaping meet steel inner cylinder headspace, directly can put into junction to be fixed by pressing plate, non junction, can use after installing, do not need the set-up time extending a couple of days because of interface, adopt recession to arrange (the installation seal section 1 namely in expanding ring body 2 is positioned at outside the straight line of steel inner cylinder 4), avoid flue gas directly to wash away the surface of expanding ring body 2, thus extend the service life of expanding ring body 2.
The utility model mainly contains following feature:
1. flexible compensation amount is large
The vertical section of telescopic section 3 is in the shape of the letter V or W shape from seeing outside to inside, and expanding ring folding freely, realizes maximum tension and the compression of single-candidate, and the torsional deformation of rubber do not occur, good looking appearance, long service life;
2. sealing intensity is high
The sealing surface 6 of two installation seal sections 1 is respectively arranged with seal convexity 5, seal convexity 5 and expanding ring body 2 adopt sulfuration process global formation, automatic-sealed can be realized, do not need to fill other encapsulant, effectively solve the rough sealing difficult problem of frame flange welding place, after compressing, sealing surface is linear sealing, and its sealing intensity is the several times of sealing surface;
3. good looking appearance, long service life
Self sealss chimney expanding ring large mold is made by numerical control machining center, and it can make self sealss chimney expanding ring overall sulfidization molding at high temperature under high pressure, and any surface finish, good looking appearance, intensity is high.The telescopic section 3 of self sealss chimney expanding ring adopts recession to arrange, avoids flue gas directly to wash away rubber surface, thus extends the service life of rubber;
4. install, overhaul conveniently
The overall sulfidization molding of self sealss chimney expanding ring, appearance and size and face shaping meet steel inner cylinder 4 headspace, directly can put into junction and be fixed by pressing plate flange, non junction, can use after installing, not need the set-up time extending a couple of days because of interface.
Promote the technical solution of the utility model and can bring huge social benefit, China wants the large-size thermal power plant of newly-built about 30 more than 300,000 kilowatts every year, if Mei Jia power plant all adopts suspension type inner steel cylinder of chimney, the construction costs of its chimney is by saving 500 ~ 1,000 ten thousand yuan.If add the middle-size and small-size thermal power plant of upper hundred less than 300,000 kilowatts that the whole nation is newly-built every year, it can be power industry every year and adds up saving 3 ~ 500,000,000 yuan.
Can existing techniques in realizing be passed through without the technical characteristic described in the utility model, not repeat them here.The utility model is not limited in above-mentioned detailed description of the invention, the change that those of ordinary skill in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (7)
1. a self sealss chimney expanding ring, it comprises expanding ring body, the vertical section of described expanding ring body comprises three sections that arrange continuously, wherein, what be positioned at two ends is installation seal section, what be positioned at centre is telescopic section, it is characterized in that: the vertical section of described telescopic section is V-shaped or W shape, and the sealing surface of described two installation seal sections is respectively arranged with seal convexity.
2. the self sealss chimney expanding ring according to claim l, is characterized in that: described two install seal sections is parallel to each other, and with horizontal plane be in a ratio of upwards 10 ° or 15 ° tilt.
3. self sealss chimney expanding ring according to claim 1 and 2, is characterized in that: described seal convexity is circular projection.
4. self sealss chimney expanding ring according to claim 3, is characterized in that, described installation seal section is at least provided with a circle seal convexity.
5. self sealss chimney expanding ring according to claim 4, is characterized in that, described installation seal section is provided with two circle seal convexities.
6. self sealss chimney expanding ring according to claim 3, is characterized in that, described expanding ring body adopts sulfuration process global formation.
7. self sealss chimney expanding ring according to claim 6, is characterized in that, the thickness of described expanding ring body is 10 mm, and non junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420571504.4U CN204153800U (en) | 2014-09-30 | 2014-09-30 | Self sealss chimney expanding ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420571504.4U CN204153800U (en) | 2014-09-30 | 2014-09-30 | Self sealss chimney expanding ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204153800U true CN204153800U (en) | 2015-02-11 |
Family
ID=52511911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420571504.4U Expired - Lifetime CN204153800U (en) | 2014-09-30 | 2014-09-30 | Self sealss chimney expanding ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204153800U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959137A (en) * | 2017-12-23 | 2018-04-24 | 河南智金网络技术有限公司 | A kind of curve band steel strengthens the earthing or grounding means of support |
-
2014
- 2014-09-30 CN CN201420571504.4U patent/CN204153800U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959137A (en) * | 2017-12-23 | 2018-04-24 | 河南智金网络技术有限公司 | A kind of curve band steel strengthens the earthing or grounding means of support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150211 |
|
| CX01 | Expiry of patent term |