CN207195933U - A kind of power-plant flue gas delivery pipe heat insulation type expansion joint - Google Patents
A kind of power-plant flue gas delivery pipe heat insulation type expansion joint Download PDFInfo
- Publication number
- CN207195933U CN207195933U CN201721046508.0U CN201721046508U CN207195933U CN 207195933 U CN207195933 U CN 207195933U CN 201721046508 U CN201721046508 U CN 201721046508U CN 207195933 U CN207195933 U CN 207195933U
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- CN
- China
- Prior art keywords
- flange
- bellows
- liner
- rubber
- flue gas
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of power-plant flue gas delivery pipe heat insulation type expansion joint, the liner set on the inside of metal bellows forms a flexible heat-proof device with flexible steel ring, high-temperature gas so in power-plant flue gas pipeline is not directly placed on metal bellows, weaken impingment corrosion of the high-temperature flue gas to metal bellows significantly, extend the service life of metal bellows；The outside of metal bellows is provided with rubber bellows and elastic metallic net, insulation material is filled between rubber bellows and elastic metallic net, insulation material can reduce influence of the outside air temperature to metal bellows, be advantageous to metal bellows to work under the more constant environment of temperature, elastic metallic net has preferable gas permeability, is advantageous to the air pressure uniformity inside expansion joint.
Description
Technical field
A kind of expansion joint is the utility model is related to, more precisely, being a kind of power-plant flue gas delivery pipe heat insulation type
Expansion joint.
Background technology
Expansion joint is traditionally also compensator, or telescopic joint.By form its operative body bellows and end pipe, support,
The annexes such as flange, conduit form.Expansion joint is to compensate for the additional stress caused by temperature difference and mechanical oscillation, and sets
A kind of flexible structure on container casing or pipeline.Using effective dilatation of its operative body bellows, with absorption tube
Line, conduit, container etc. by the reason such as expand with heat and contract with cold and caused change in size, or the axial direction of compensation pipes, conduit, container etc.,
Transverse direction and angular displacement.Noise-and-vibration-reduction is can also be used for, in heat supply, during in order to prevent that heat supply pipeline from heating up, due to thermal stretching or temperature
Spend stress and cause pipe deforming or destruction, it is necessary to set compensator on pipeline, to compensate the thermal stretching of pipeline, so as to reduce
The stress of tube wall and act on the active force on valve member or supporting structure.
High-temperature flue gas in power-plant flue gas delivery pipe especially has larger impact rotten to expansion joint inwall to bellows
Corrosion, and the outer wall of expansion joint is outdoor exposed to the external world, corrugated pipe wall internal-external temperature difference is larger when ambient temperature is relatively low,
For bellows by the easy aging of effect of uneven internal stress, service life is shorter.
Utility model content
The utility model is mainly to solve the technical problem present in prior art, so as to provide a kind of power-plant flue gas discharge
Effective heat insulation type expansion joint.
Above-mentioned technical problem of the present utility model is mainly what is be addressed by following technical proposals：
A kind of power-plant flue gas delivery pipe heat insulation type expansion joint, comprising one first connecting tube and one second connecting tube,
A metal bellows is connected between first connecting tube and the second connecting tube, the first connection pipe end welds a first flange, and second connects
A second flange is welded in the end of adapter, is provided with one first liner and one second liner on the inside of metal bellows, the first liner and
First flange is welded, and the second liner is welded with second flange, and heat resistant rubber block is filled between the first liner and the second liner, heat-resisting
The both sides of block rubber are respectively provided with a flexible steel ring, and the both ends of flexible steel ring are welded with the first liner and the second liner respectively, metal
A rubber bellows are provided with the outside of bellows, the both ends of rubber bellows are connected with first flange and second flange, rubber corrugated
An elastic metallic net is provided between pipe and metal bellows, the both ends of elastic metallic net are connected with first flange and second flange, rubber
A heat preservation rock circle is filled between glue bellows and elastic metallic net, the both ends of heat preservation rock circle connect one first insulation rubber respectively
Cushion rubber and one second insulation rubber ring, the first insulation rubber ring is Nian Jie with first flange, the second insulation rubber ring and second flange
Bonding.
As the utility model preferred embodiment, described elastic metallic net is stainless steel cloth.
As the utility model preferred embodiment, described heat resistant rubber block is made up of fluorubber.
Power-plant flue gas delivery pipe of the present utility model is had the following advantages that with heat insulation type expansion joint：
1st, the liner and flexible steel ring set on the inside of metal bellows forms a flexible heat-proof device, so
High-temperature gas in power-plant flue gas pipeline is not directly placed on metal bellows, weakens high-temperature flue gas significantly to metal bellows
Impingment corrosion, extend the service life of metal bellows.
2nd, the outside of metal bellows is provided with rubber bellows and elastic metallic net, rubber bellows and elastic metallic net
Between be filled with insulation material, insulation material can reduce influence of the outside air temperature to metal bellows, be advantageous to metal bellows
Worked under the more constant environment of temperature, elastic metallic net has preferable gas permeability, is advantageous to the air pressure inside expansion joint
Uniformity.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural pipe wall schematic diagram of power-plant flue gas delivery pipe heat insulation type expansion joint of the present utility model.
Embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear and definite so as to be made to the scope of protection of the utility model
Define.
As shown in figure 1, a kind of power-plant flue gas delivery pipe heat insulation type expansion joint, includes one first connecting tube 10 and one
Second connecting tube 20, a metal bellows 30, the end of the first connecting tube 10 are connected between the first connecting tube 10 and the second connecting tube 20
Weld a first flange 11, a second flange 21 is welded in the end of the second connecting tube 20, and the inner side of metal bellows 30 is provided with one the
One liner 41 and one second liner 42, the first liner 41 weld with first flange 11, and the second liner 42 welds with second flange 21,
Heat resistant rubber block 43 is filled between first liner 41 and the second liner 42, the both sides of heat resistant rubber block 43 are respectively provided with a flexible steel ring
50, the both ends of flexible steel ring 50 are welded with the first liner 41 and the second liner 42 respectively, and the outside of metal bellows 30 is provided with a rubber
Glue bellows 60, the both ends of rubber bellows 60 are connected with first flange 11 and second flange 21, rubber bellows 60 and metal
An elastic metallic net 70 is provided between bellows 30, the both ends of elastic metallic net 70 are connected with first flange 11 and second flange 21,
A heat preservation rock circle 61 is filled between rubber bellows 60 and elastic metallic net 70, the both ends of heat preservation rock circle 61 connect one respectively
First insulation rubber ring 62 and 1 second is incubated rubber ring 63, and the first insulation rubber ring 62 is be bonded with first flange 11, and second protects
Warm rubber ring 63 is be bonded with second flange 21.
As to the further improvement of the utility model, described elastic metallic net 70 is stainless steel cloth.
It is made up as to the further improvement of the utility model, described heat resistant rubber block 43 of fluorubber.
The power-plant flue gas delivery pipe of the utility model is had the following advantages that with heat insulation type expansion joint：
1st, the liner and flexible steel ring set on the inside of metal bellows forms a flexible heat-proof device, so
High-temperature gas in power-plant flue gas pipeline is not directly placed on metal bellows, weakens high-temperature flue gas significantly to metal bellows
Impingment corrosion, extend the service life of metal bellows.
2nd, the outside of metal bellows is provided with rubber bellows and elastic metallic net, rubber bellows and elastic metallic net
Between be filled with insulation material, insulation material can reduce influence of the outside air temperature to metal bellows, be advantageous to metal bellows
Worked under the more constant environment of temperature, elastic metallic net has preferable gas permeability, is advantageous to the air pressure inside expansion joint
Uniformity.
Only illustrate mentality of designing of the present utility model in one embodiment above, in the case where system allows,
The utility model can expand to while external more functional modules, so as to extend its function to greatest extent.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any change or replacement expected without creative work, should all cover within the scope of protection of the utility model.
Therefore, the scope of protection of the utility model should be determined by the scope of protection defined in the claims.
Claims (3)
1. a kind of power-plant flue gas delivery pipe heat insulation type expansion joint, it is characterised in that include one first connecting tube（10）With
One second connecting tube（20）, the first connecting tube（10）With the second connecting tube（20）Between connect a metal bellows（30）, first connects
Adapter（10）Weld a first flange in end（11）, the second connecting tube（20）End weld a second flange（21）, metal wave
Line pipe（30）Inner side is provided with one first liner（41）With one second liner（42）, the first liner（41）With first flange（11）Weldering
Connect, the second liner（42）With second flange（21）Welding, the first liner（41）With the second liner（42）Between be filled with heat resistant rubber
Block（43）, heat resistant rubber block（43）Both sides be respectively provided with a flexible steel ring（50）, flexible steel ring（50）Both ends respectively with first
Liner（41）With the second liner（42）Welding, metal bellows（30）Outside is provided with a rubber bellows（60）, rubber bellows
（60）Both ends and first flange（11）And second flange（21）Connection, rubber bellows（60）And metal bellows（30）Between set
There is an elastic metallic net（70）, elastic metallic net（70）Both ends and first flange（11）And second flange（21）Connection, rubber
Bellows（60）With elastic metallic net（70）Between be filled with a heat preservation rock circle（61）, heat preservation rock circle（61）Both ends connect respectively
Connect one first insulation rubber ring（62）With one second insulation rubber ring（63）, the first insulation rubber ring（62）With first flange（11）
Bonding, the second insulation rubber ring（63）With second flange（21）Bonding.
2. power-plant flue gas delivery pipe according to claim 1 heat insulation type expansion joint, it is characterised in that described bullet
Property wire netting（70）For stainless steel cloth.
3. power-plant flue gas delivery pipe according to claim 2 heat insulation type expansion joint, it is characterised in that described is resistance to
Hot block rubber（43）It is made up of fluorubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721046508.0U CN207195933U (en) | 2017-08-20 | 2017-08-20 | A kind of power-plant flue gas delivery pipe heat insulation type expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721046508.0U CN207195933U (en) | 2017-08-20 | 2017-08-20 | A kind of power-plant flue gas delivery pipe heat insulation type expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207195933U true CN207195933U (en) | 2018-04-06 |
Family
ID=61794143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721046508.0U Expired - Fee Related CN207195933U (en) | 2017-08-20 | 2017-08-20 | A kind of power-plant flue gas delivery pipe heat insulation type expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207195933U (en) |
-
2017
- 2017-08-20 CN CN201721046508.0U patent/CN207195933U/en not_active Expired - Fee Related
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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: 20180406 Termination date: 20180820 |