CN202012934U - Anticorrosive structure of segmented suspending steel inner cylinder - Google Patents
Anticorrosive structure of segmented suspending steel inner cylinder Download PDFInfo
- Publication number
- CN202012934U CN202012934U CN2011200508129U CN201120050812U CN202012934U CN 202012934 U CN202012934 U CN 202012934U CN 2011200508129 U CN2011200508129 U CN 2011200508129U CN 201120050812 U CN201120050812 U CN 201120050812U CN 202012934 U CN202012934 U CN 202012934U
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- Prior art keywords
- steel inner
- inner cylinder
- segmented
- ring
- fastener
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 118
- 239000010959 steel Substances 0.000 title claims abstract description 118
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 238000005260 corrosion Methods 0.000 claims description 25
- 125000003003 spiro group Chemical group 0.000 claims description 16
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 4
- 230000003442 weekly effect Effects 0.000 claims description 3
- 239000000779 smoke Substances 0.000 abstract description 3
- 239000003517 fume Substances 0.000 description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
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- Chimneys And Flues (AREA)
Abstract
The utility model discloses an anticorrosive structure of a segmented suspending steel inner cylinder. The anticorrosive structure comprises a cylindrical steel inner cylinder, an anticorrosive lining, a fastener and a seal ring, wherein the axial end part of the cylindrical steel inner cylinder radially extends inwards to form an annular edge; the anticorrosive lining is attached onto the inner wall of the steel inner cylinder and arranged between the annular edges at the two ends of the steel inner cylinder; the fastener comprises a fixed fastener part arranged on the outer wall of the steel inner cylinder and a movable fastener part, and the movable fastener part is fixed on the fixed fastener part through a bolt; and the seal ring is connected with two neighboring steel inner cylinders through the fastener. The anticorrosive structure can satisfactorily play the function of sealing, and can effectively isolate joints from corrosive smoke gas.
Description
Technical field
The utility model relates to a kind of segmented suspention steel inner cylinder anti-corrosion structure, relates in particular to a kind of segmented suspention steel inner cylinder anti-corrosion structure that is used for the chimney of thermal power plant wet desulphurization smoke evacuation.
Background technology
The corrosivity of the wet desulphurization flue gas in thermal power plant is stronger, general concrete chimney can not be resisted the corrosion of wet-method desulfurized fume, so in engineering practice, adopt the mode that is with the smoke evacuation inner core of steel in the concrete chimney urceolus to discharge fume usually, to prolong the service life of chimney.
According to the difference of concrete applied environment, the set-up mode of steel inner cylinder is also different.In order to reduce construction costs, in engineering practice, adopt the segmented steel inner cylinder usually in conjunction with the technical scheme of anticorrosion sealing ring as the connecting portion between the steel inner cylinder.For example, can in the concrete chimney urceolus, brace table be set segmentation, at the fixing described steel inner cylinder in the cylindrical shell place of each section steel inner cylinder.
Fig. 1 illustrates the structural representation (not in scale) at the expansion knot place of the segmented suspention steel inner cylinder that the chimney in thermal power plant in the prior art usually adopts.As shown in Figure 1, two neighboring sections suspention steel inner cylinder 21 and 21 ' links together by anticorrosion sealing ring 24, and the periphery of described steel inner cylinder is a concrete chimney urceolus 20.Wherein, sealing ring 24 is fixed between steel inner cylinder 21 and 21 ' by the connected node 23 that is arranged on the two neighboring sections steel inner cylinder.But node 23 partly is exposed in the corrosive fume (flue gas is with upwards discharging of direction shown in the arrow A).Therefore, the node 23 that is exposed in the flue gas just becomes the weak link that wet desulphurization chimney anticorrosion in thermal power plant loses, and in the course of the work, these nodes take the lead in being corroded and seepage takes place.
The utility model content
For the perishable leakage problems of node of the segmented suspention steel inner cylinder that solves above-mentioned thermal power plant wet desulphurization chimney, the utility model provides a kind of segmented suspention steel inner cylinder anti-corrosion structure.
Described segmented suspention steel inner cylinder anti-corrosion structure comprises: multistage steel inner cylinder, anticorrosion lining, fastener and sealing ring.Every section steel inner cylinder is the cylindrical steel inner core, and has ring-shaped edge at its axial two ends, and described ring-shaped edge inwardly radially extends to form at the axial end portion of described steel inner cylinder; The anticorrosion lining is attached on the inwall of described steel inner cylinder, and is between the ring-shaped edge at the axial two ends of described steel inner cylinder; The axial two ends of every section steel inner cylinder are equipped with described fastener.
Described fastener comprises movable fastener portion and attachment fastener portion, and wherein, described movable fastener portion comprises spiro union portion, kink and support portion.Described spiro union portion and support portion are fixed on its two ends perpendicular to described kink respectively and branch is in its both sides, described spiro union portion and described attachment fastener portion are provided with the screw that is complementary, pass through bolt, described spiro union portion is removably fixed to described attachment fastener portion, and described attachment fastener portion is fixed on the outer wall of an end of described steel inner cylinder, the ring-shaped edge certain altitude of the described end of the described steel inner cylinder of distance, this height is less than the height of described kink.When described spiro union portion was fixed in the described attachment fastener portion, described kink was close on the outer wall of described steel inner cylinder, makes described support portion be parallel to the ring-shaped edge of the described end of described steel inner cylinder.
Described sealing ring, described sealing ring is connected between described two sections steel inner cylinders by the fastener on the adjacent both ends outer wall of adjacent two sections steel inner cylinders, and the two ends of described sealing ring are clipped in respectively between the support portion of the ring-shaped edge of described every section steel inner cylinder and described movable fastener portion.
Preferably, described segmented suspention steel inner cylinder anti-corrosion structure also comprises annular gasket, and it is arranged on the support portion of described movable fastener portion, is clipped between described support portion and the described sealing ring.
Preferably, described anticorrosion lining is bonded to the inwall of described steel inner cylinder by the silicon rubber tack coat.
Preferably, a plurality of described fasteners are provided with along the outer wall tube weekly interval ground of described steel inner cylinder.
Preferably, a side surface relative with described ring-shaped edge of described support portion is distributed with coarse jut.And the both side surface of described annular gasket is distributed with coarse jut.
Preferably, described sealing ring is made by fluorubber.
Preferably, the thickness of described anticorrosion lining is greater than the width of described ring-shaped edge.
Segmented suspention steel inner cylinder anti-corrosion structure provided by the utility model, setting by anticorrosion lining, sealing ring and fastener, the corrosive environment that can adapt to wet-method desulfurized fume, can play the better seal effect, effectively that node and corrosive fume is isolated, solved the node etching problem.
Description of drawings
Embodiment of the present utility model is described below with reference to accompanying drawings, wherein:
Fig. 1 illustrates the structural representation at the expansion knot place of segmented suspention steel inner cylinder in the prior art;
Fig. 2 is the axial, cross-sectional view according to segmented suspention steel inner cylinder anti-corrosion structure of the present utility model, wherein for simplicity's sake, and the clipped structure;
Fig. 3 is the detail view of connecting portion of adjacent two sections steel inner cylinders of segmented shown in Figure 2 suspention steel inner cylinder anti-corrosion structure;
Fig. 4 is the movable fastener portion of segmented suspention steel inner cylinder anti-corrosion structure shown in Figure 3 and the longitudinal section of annular gasket.
The specific embodiment
Fig. 2 is according to the axial, cross-sectional view (not proportional) of segmented suspention steel inner cylinder anti-corrosion structure of the present utility model, for simplicity's sake, one section complete steel inner cylinder axial cross section only is shown.In this embodiment, be with the multistage steel inner cylinder in the concrete chimney urceolus, for example, adopt fastener 13 and sealing ring 14 to link together between adjacent two sections steel inner cylinders 11 and 11 ', corrosive fume is discharged along direction shown in the arrow A.As shown in the figure, be provided with fastener 13 at the axial two ends of described steel inner cylinder, its combination seal circle 14 is respectively applied for two sections adjacent steel inner cylinders that connect described steel inner cylinder above and below.
According to embodiment of the present utility model, and illustrate better as Fig. 3, described segmented suspention steel inner cylinder anti-corrosion structure comprises: steel inner cylinder (is example with two neighboring sections steel inner cylinder 11 and 11 '); Anticorrosion lining 12; Fastener 13 and sealing ring 14.Wherein, corrosive fume discharges with direction shown in the arrow A.
Wherein, described steel inner cylinder 11 and 11 ' is a two neighboring sections cylindrical steel inner core, and described steel inner cylinder 11 all has ring-shaped edge 17 at its axial two ends, and described ring-shaped edge 17 inwardly radially extends to form at the axial end portion of described steel inner cylinder 11.As shown in the figure, described ring-shaped edge 17 forms perpendicularly with the outer wall of described steel inner cylinder 11, partly to support the end of described anticorrosion lining 12.
Described anticorrosion lining 12 is bonded on the inwall of described steel inner cylinder 11 by silicon rubber tack coat 16; and be between the ring-shaped edge 17 at described steel inner cylinder 11 two ends; as shown in the figure; the thickness of anticorrosion lining 12 slightly is wider than the width of ring-shaped edge 17; therefore can guarantee the interior ring periphery sealing of silicon rubber tack coat 16, in order to protection steel inner cylinder and ring-shaped edge 17 thereof with ring-shaped edge 17.Usually, can select for use high-temperature scale coating or rubber etc. as the anticorrosion lining.According to embodiment of the present utility model, described anticorrosion lining 12 is made by foamed glass brick or vitreous ceramic brick.
When described spiro union portion 132b is fixed in the described attachment fastener portion 131, described kink 132c is close on the outer wall of described steel inner cylinder 11, make described support portion 132a be parallel to the ring-shaped edge 17 of the described end of described steel inner cylinder 11, and length is slightly larger than the width of ring-shaped edge 17, be the thickness sum of the thickness and the anticorrosion lining 12 of steel inner cylinder 11, and movable fastener portion 132 is constructed so that distance between support portion 132a and the ring-shaped edge 17 is smaller or equal to the thickness of sealing ring 14.The purpose of She Zhiing is like this, and when attachment fastener portion 131 fixed with movable fastener portion 132 by bolt 18, the end of sealing ring 14 can be clipped between support portion 132a and the ring-shaped edge 17 tightly.
Therefore, described sealing ring 14 can be fixedly attached between two sections adjacent steel inner cylinders 11 and 11 ' by described fastener 13.The two ends of described sealing ring 14 are clipped in respectively between the support portion 132a of the ring-shaped edge 17 of described steel inner cylinder 11 and described movable fastener portion, make substantially all to be covered, prevent the infringement of corrosive fume effectively steel inner cylinder and node by anticorrosive with the contacted surface of corrosive fume.According to embodiment of the present utility model, adopt the flexible seal ring of making by fluorubber 14, can adapt to the vertical displacement and the horizontal changing of the relative positions of the steel inner cylinder of segmentation fully.
Preferably, according to embodiment of the present utility model, described segmented suspention steel inner cylinder anti-corrosion structure also comprises annular gasket 15, and described annular gasket 15 is arranged on the support portion 132a of described movable fastener portion 132, is clipped between support portion 132a and the described sealing ring 14.Illustrate in greater detail as Fig. 4, according to embodiment of the present utility model, the side surface relative with ring-shaped edge 17 of the support portion 132a of described movable fastener portion 132 comprises coarse jut, sawtooth for example, and described coarse jut is evenly distributed on this side surface of support portion 132a.The both side surface of described annular shim 15 is distributed with coarse jut, be complementary with the coarse jut on the 132a of support portion, like this purpose of She Zhiing be for better, the sealing ring 14 of geometrical clamp between the ring-shaped edge 17 of the support portion 132a of movable fastener portion and steel inner cylinder more enduringly, As time goes on, the segmented steel inner cylinder can produce the vertical displacement or the horizontal changing of the relative positions, by above-mentioned setting, just can guarantee that sealing ring can not change along with the relative position of steel inner cylinder and change, and has guaranteed the isolation to corrosive fume.
According to embodiment of the present utility model, be provided with a plurality of fasteners (for simplicity's sake, the every end of steel inner cylinder only illustrates two in Fig. 2) along the compartment of terrain, neighboring of described steel inner cylinder 11 and 11 '.Along the outer wall tube weekly interval of described steel inner cylinder described fastener 13 be set not only guaranteed also to provide cost savings fixing to sealing ring, install simple and be convenient to and change, help the disassemble and assemble work when safeguarding steel inner cylinder.According to concrete environment for use, can set the quantity of required fastener.In this embodiment, be the steel inner cylinder of 8.5m for diameter, selecting 38 width for use is the fastener of 200mm.
Therefore when being fixed together with attachment fastener portion 131 in movable fastener portion 132, sealing ring 14 is fixed between the ring-shaped edge of two sections steel inner cylinders 11 and 11 ', and the interior ring periphery of ring-shaped edge 17 is also by 16 sealings of silicon rubber tack coat, so not only steel inner cylinder 11 is isolated with corrosive fume, and fastener 13 and annular gasket 15 are all isolated with corrosive fume.
The steel inner cylinder that is used for the wet desulphurization chimney in the utility model adopts mechanical connection manner, has avoided the adverse effect of electric welding field to steel inner cylinder liner bonding agent.And the segmented suspention steel inner cylinder anti-corrosion structure that the utility model adopted can be isolated corrosive gas and steel inner cylinder and fastener etc. better, has solved the node etching problem effectively.
Although the utility model is to be described by the mode of reference accompanying drawing with above-mentioned preferred embodiment, be appreciated that way of realization of the present utility model is not limited to above-mentioned embodiment.Should be realized that in not deviating from the utility model claim scope required for protection, those skilled in the art can make multiple different variation and adjustment to the utility model.
Claims (8)
1. a segmented suspention steel inner cylinder anti-corrosion structure comprises the multistage steel inner cylinder, it is characterized in that, described segmented suspention steel inner cylinder anti-corrosion structure also comprises: anticorrosion lining, fastener and sealing ring, wherein,
Described every section steel inner cylinder is the cylindrical steel inner core, and has ring-shaped edge at its axial two ends, and described ring-shaped edge inwardly radially extends to form at the axial end portion of described steel inner cylinder;
Described anticorrosion lining is attached on the inwall of described steel inner cylinder, and is between the ring-shaped edge at the axial two ends of described steel inner cylinder;
The axial two ends of described every section steel inner cylinder are equipped with described fastener, described fastener comprises movable fastener portion and attachment fastener portion, wherein, described movable fastener portion comprises spiro union portion, kink and support portion, described spiro union portion and support portion are fixed on its two ends perpendicular to described kink respectively and branch is in its both sides, described spiro union portion and described attachment fastener portion are provided with the screw that is complementary, pass through bolt, described spiro union portion is removably fixed to described attachment fastener portion, and described attachment fastener portion is fixed on the outer wall of an end of described steel inner cylinder, the ring-shaped edge certain altitude of the described end of the described steel inner cylinder of distance, this height is less than the height of described kink, when described spiro union portion is fixed in the described attachment fastener portion, described kink is close on the outer wall of described steel inner cylinder, makes described support portion be parallel to the ring-shaped edge of the described end of described steel inner cylinder;
Described sealing ring, described sealing ring is connected between described two sections steel inner cylinders by the fastener on the adjacent both ends outer wall of adjacent two sections steel inner cylinders, and the two ends of described sealing ring are clipped in respectively between the support portion of the ring-shaped edge of described every section steel inner cylinder and described movable fastener portion.
2. segmented suspention steel inner cylinder anti-corrosion structure according to claim 1, it is characterized in that, described segmented suspention steel inner cylinder anti-corrosion structure also comprises annular gasket, and described annular gasket is arranged on the support portion of described movable fastener portion, is clipped between described support portion and the described sealing ring.
3. segmented suspention steel inner cylinder anti-corrosion structure according to claim 2 is characterized in that described anticorrosion lining is bonded to the inwall of described steel inner cylinder by the silicon rubber tack coat.
4. segmented suspention steel inner cylinder anti-corrosion structure according to claim 3 is characterized in that a plurality of described fasteners are provided with along the outer wall tube weekly interval ground of described steel inner cylinder.
5. segmented suspention steel inner cylinder anti-corrosion structure according to claim 4 is characterized in that a side surface relative with described ring-shaped edge of described support portion is distributed with coarse jut.
6. segmented suspention steel inner cylinder anti-corrosion structure according to claim 5 is characterized in that the both side surface of described annular gasket is distributed with coarse jut.
7. segmented suspention steel inner cylinder anti-corrosion structure according to claim 1 is characterized in that described sealing ring is made by fluorubber.
8. segmented suspention steel inner cylinder anti-corrosion structure according to claim 1 is characterized in that the thickness of described anticorrosion lining is greater than the width of described ring-shaped edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200508129U CN202012934U (en) | 2011-02-28 | 2011-02-28 | Anticorrosive structure of segmented suspending steel inner cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200508129U CN202012934U (en) | 2011-02-28 | 2011-02-28 | Anticorrosive structure of segmented suspending steel inner cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202012934U true CN202012934U (en) | 2011-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200508129U Expired - Lifetime CN202012934U (en) | 2011-02-28 | 2011-02-28 | Anticorrosive structure of segmented suspending steel inner cylinder |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075602A (en) * | 2013-02-05 | 2013-05-01 | 山东龙泰电站技术有限公司 | Chimney expansion joint |
| CN103423756A (en) * | 2013-07-19 | 2013-12-04 | 东南大学 | Composite material chimney connection joint and method |
-
2011
- 2011-02-28 CN CN2011200508129U patent/CN202012934U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075602A (en) * | 2013-02-05 | 2013-05-01 | 山东龙泰电站技术有限公司 | Chimney expansion joint |
| CN103423756A (en) * | 2013-07-19 | 2013-12-04 | 东南大学 | Composite material chimney connection joint and method |
| CN103423756B (en) * | 2013-07-19 | 2015-09-23 | 东南大学 | A kind of composite material chimney connection joint and method |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111019 |