CN205352148U - Abrasionproof decreases low -level (stack -gas) economizer - Google Patents
Abrasionproof decreases low -level (stack -gas) economizer Download PDFInfo
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- CN205352148U CN205352148U CN201520885480.4U CN201520885480U CN205352148U CN 205352148 U CN205352148 U CN 205352148U CN 201520885480 U CN201520885480 U CN 201520885480U CN 205352148 U CN205352148 U CN 205352148U
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Abstract
The utility model discloses an abrasionproof decreases low -level (stack -gas) economizer, which comprises a housin, be equipped with snakelike heat exchange tube in the casing, the pipeline section that snakelike heat exchange tube is located the lower surface is equipped with V -arrangement abrasionproof piece, V -arrangement abrasionproof piece includes the abrasionproof piece main part and the lantern ring, the internal diameter of the lantern ring is greater than the external diameter of snakelike heat exchange tube, V -arrangement abrasionproof piece lies in the tie -in of lower surface through the lantern ring and snakelike heat exchange tube. The utility model discloses add V -arrangement abrasionproof piece with the facial canal section of being heated of low -level (stack -gas) economizer, prevent that the granule in the flue gas from impacting snakelike heat exchange tube is direct, cause wearing and tearing. And V -arrangement abrasionproof piece adopts the lantern ring to fix on snakelike heat exchange tube, it is all very convenient that the installation is dismantled.
Description
Technical field
This utility model relates to economizer, particularly a kind of low-level (stack-gas) economizer that can reduce all kinds of discharge smoke temperature of power station boiler, belongs to boiler afterheat and reclaims energy-saving field.
Background technology
Along with the raising of people's living standard, the demand of electric power is also increasing, therefore a lot of power plants generating electricity equipment are also in continuous improvement.Owing to the increase-volume of generating set is reconstructed, the exhaust gas temperature of a lot of power plant all can raise, and deviates original design value, raises temperature and reaches 20～500 degree, so not only have impact on the cycle efficieny in boiler efficiency and power plant and also add fire coal and make consumption.In order to solve the problem that flue-gas temperature raises, a lot of power plant arrange economizer in flue, utilize economizer by flue gas cool-down, but traditional economizer in use there will be seriously corroded, the problem that service life is short, and traditional economizer there is also that heat exchange efficiency is low, the easy fouling of heat-exchanging tube bundle, equipment manufacturing cost and the high shortcoming of maintenance cost.
The additionally low-level (stack-gas) economizer of traditional structure, once occur that damage is accomplished by overall pulling down, repairs or replaces.It is extremely trouble, and the cost every time keeping in repair replacing is very high.
And, existing low temperature economizes texture of coal to many just with the designs of looped pipeline on resistance to wearing, but installs looped pipeline before the coil of low-level (stack-gas) economizer, and cost is huge, and actual effect inconspicuous, originally just very heavy low-level (stack-gas) economizer also can be made to become much larger heavier.
If it is intended to the low-level (stack-gas) economizer that the acquisition life-span is longer, in hgher efficiency, then need low-level (stack-gas) economizer is carried out Overall Reconstruction or replacing, but the cost of transformation is huge and troublesome.
Summary of the invention
Problem to be solved in the utility model is, for above-mentioned shortcoming of the prior art, improvement project or alternative are proposed, especially a kind of anti-wear low-level (stack-gas) economizer, do not increasing on the basis of existing low-level (stack-gas) economizer volume, it is possible to the low-level (stack-gas) economizer simply and easily existing low-level (stack-gas) economizer transformed.
For solving the problems referred to above, the scheme that this utility model adopts is as follows: a kind of anti-wear low-level (stack-gas) economizer, including housing, it is characterised in that be provided with snakelike heat exchange tube in described housing；Described snakelike heat exchange tube is positioned at the pipeline section of lower surface and is provided with V-arrangement friction-proof piece；Described V-arrangement friction-proof piece includes friction-proof piece main body and the collar；The internal diameter of the described collar is more than the external diameter of snakelike heat exchange tube；The pipeline section that described V-arrangement friction-proof piece is positioned at lower surface by the collar with snakelike heat exchange tube is connected.
Anti-wear low-level (stack-gas) economizer of the present utility model; heating surface at snakelike heat exchange tube; namely the pipeline section of lower surface arranges a V-arrangement friction-proof piece; this V-arrangement friction-proof piece includes friction-proof piece main body and the collar; it is connected with snakelike heat exchange tube by the collar; be equivalent to provide a umbrella to snakelike heat exchange tube, it is prevented that snakelike heat exchange tube suffers the direct impact of granule in flue gas.Use the design that the collar connects so that even it is also very convenient that existing low-level (stack-gas) economizer is transformed.Too high cost just need not can make promote more than 2 times the service life of existing low-level (stack-gas) economizer.The upper end outlet of snakelike heat exchange tube is connected with the upper collecting chamber being arranged on hull outside top, and the lower end import of snakelike heat exchange tube is connected with the lower header being arranged on hull outside bottom.
Further, according to the described anti-wear low-level (stack-gas) economizer of above-mentioned design, described abrasionproof low-level (stack-gas) economizer also includes air deflector；Described air deflector is positioned at the lower section of V-arrangement friction-proof piece, gas approach place.
On the basis of above-mentioned design, an air deflector is set up in the front end of low-level (stack-gas) economizer, could alter that the flow direction of the flue gas entering low-level (stack-gas) economizer, originally mixed and disorderly flue gas is made to become steady, also make the granule in flue gas through air deflector simultaneously, reduce speed, so as to the impulsive force during heat pipe of the low-level (stack-gas) economizer that collides behind diminishes.
Further, according to the described anti-wear low-level (stack-gas) economizer of above-mentioned design, the outer surface of the friction-proof piece main body of described V-arrangement friction-proof piece is provided with the anti-abrasive coatings that anti-wear material is constituted.
Outer surface in friction-proof piece main body arranges one layer of anti-abrasive coatings, promotes abrasionproof performance further.
Further, according to the described anti-wear low-level (stack-gas) economizer of above-mentioned design, the friction-proof piece main body of described V-arrangement friction-proof piece adopts 20Cr steel to process.
The preferred 20Cr steel of friction-proof piece main body processes, so as to anti-wear performance is more excellent.
Further, according to the described anti-wear low-level (stack-gas) economizer of above-mentioned design, described air deflector comprises multiple cellular flow-guiding channel, multiple cellular flow-guiding channels composition air deflector.
On the basis of above-mentioned design, an air deflector is set up in the front end of low-level (stack-gas) economizer, could alter that the flow direction of the flue gas entering low-level (stack-gas) economizer, originally mixed and disorderly flue gas is made to become steady, also make the granule in flue gas through air deflector simultaneously, reduce speed, so as to the impulsive force during heat pipe of the low-level (stack-gas) economizer that collides behind diminishes.
Further, according to the described anti-wear low-level (stack-gas) economizer of above-mentioned design, the sectional area of described single cellular flow-guiding channel is 550-1400cm2。
Cellular flow-guiding channel structure is more stable, the air deflector being made up of cellular flow-guiding channel is arranged on the front end of low-level (stack-gas) economizer, can prevent the heat pipe that flue gas directly washes away low-level (stack-gas) economizer from causing equipment attrition to aggravate, play water conservancy diversion flue gas flow direction, it is uniformly distributed flue gas flow rate, it is prevented that low-level (stack-gas) economizer concentrated wear.The heat exchanger time limit in service life can be greatly improved.
Technique effect of the present utility model is as follows: anti-wear low-level (stack-gas) economizer of the present utility model; heating surface at snakelike heat exchange tube; namely the pipeline section of lower surface arranges a V-arrangement friction-proof piece; this V-arrangement friction-proof piece includes friction-proof piece main body and the collar; it is connected with snakelike heat exchange tube by the collar; be equivalent to provide a umbrella to snakelike heat exchange tube, it is prevented that snakelike heat exchange tube suffers the direct impact of granule in flue gas.Use the design that the collar connects so that even it is also very convenient that existing low-level (stack-gas) economizer is transformed.Too high cost just need not can make promote more than 2 times the service life of existing low-level (stack-gas) economizer.
Accompanying drawing explanation
Fig. 1 is anti-wear low-level (stack-gas) economizer structural representation.
Fig. 2 is anti-wear low-level (stack-gas) economizer schematic cross-section.
Fig. 3 is that V-arrangement friction-proof piece is set on snakelike heat exchange tube structural representation.
Fig. 4 is V-arrangement friction-proof piece cross section structure schematic diagram.
Fig. 5 is V-arrangement friction-proof piece perspective view.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further details.
Embodiment 1: a kind of anti-wear low-level (stack-gas) economizer, including housing 1, is provided with snakelike heat exchange tube 2 in described housing 1；The pipeline section that described snakelike heat exchange tube 2 is positioned at lower surface is provided with V-arrangement friction-proof piece 3；Described V-arrangement friction-proof piece 3 includes friction-proof piece main body 31 and the collar 32；The internal diameter of the described collar 32 is more than the external diameter of snakelike heat exchange tube 2；The pipeline section that described V-arrangement friction-proof piece 3 is positioned at lower surface by the collar 32 with snakelike heat exchange tube 2 is connected.
Embodiment 2: a kind of anti-wear low-level (stack-gas) economizer, including housing 1, is provided with snakelike heat exchange tube 2 in described housing 1；The pipeline section that described snakelike heat exchange tube 2 is positioned at lower surface is provided with V-arrangement friction-proof piece 3；Described V-arrangement friction-proof piece 3 includes friction-proof piece main body 31 and the collar 32；The internal diameter of the described collar 32 is more than the external diameter of snakelike heat exchange tube 2；The pipeline section that described V-arrangement friction-proof piece 3 is positioned at lower surface by the collar 32 with snakelike heat exchange tube 2 is connected, and described abrasionproof low-level (stack-gas) economizer also includes air deflector 4；Described air deflector 4 is positioned at the lower section of V-arrangement friction-proof piece 3, gas approach place.
Embodiment 3: a kind of anti-wear low-level (stack-gas) economizer, including housing 1, is provided with snakelike heat exchange tube 2 in described housing 1；The pipeline section that described snakelike heat exchange tube 2 is positioned at lower surface is provided with V-arrangement friction-proof piece 3；Described V-arrangement friction-proof piece 3 includes friction-proof piece main body 31 and the collar 32；The internal diameter of the described collar 32 is more than the external diameter of snakelike heat exchange tube 2；The pipeline section that described V-arrangement friction-proof piece 3 is positioned at lower surface by the collar 32 with snakelike heat exchange tube 2 is connected, and the outer surface of the friction-proof piece main body 31 of described V-arrangement friction-proof piece 3 is provided with the anti-abrasive coatings 33 that anti-wear material is constituted.
Embodiment 4: a kind of anti-wear low-level (stack-gas) economizer, including housing 1, is provided with snakelike heat exchange tube 2 in described housing 1；The pipeline section that described snakelike heat exchange tube 2 is positioned at lower surface is provided with V-arrangement friction-proof piece 3；Described V-arrangement friction-proof piece 3 includes friction-proof piece main body 31 and the collar 32；The internal diameter of the described collar 32 is more than the external diameter of snakelike heat exchange tube 2；The pipeline section that described V-arrangement friction-proof piece 3 is positioned at lower surface by the collar 32 with snakelike heat exchange tube 2 is connected, and the friction-proof piece main body 31 of described V-arrangement friction-proof piece 3 adopts 20Cr steel to process.
Embodiment 5: a kind of anti-wear low-level (stack-gas) economizer, including housing 1, is provided with snakelike heat exchange tube 2 in described housing 1；The pipeline section that described snakelike heat exchange tube 2 is positioned at lower surface is provided with V-arrangement friction-proof piece 3；Described V-arrangement friction-proof piece 3 includes friction-proof piece main body 31 and the collar 32；The internal diameter of the described collar 32 is more than the external diameter of snakelike heat exchange tube 2；The pipeline section that described V-arrangement friction-proof piece 3 is positioned at lower surface by the collar 32 with snakelike heat exchange tube 2 is connected, and described air deflector 4 comprises multiple cellular flow-guiding channel, multiple cellular flow-guiding channels composition air deflector 4.
Embodiment 6: a kind of anti-wear low-level (stack-gas) economizer, including housing 1, is provided with snakelike heat exchange tube 2 in described housing 1；The pipeline section that described snakelike heat exchange tube 2 is positioned at lower surface is provided with V-arrangement friction-proof piece 3；Described V-arrangement friction-proof piece 3 includes friction-proof piece main body 31 and the collar 32；The internal diameter of the described collar 32 is more than the external diameter of snakelike heat exchange tube 2；The pipeline section that described V-arrangement friction-proof piece 3 is positioned at lower surface by the collar 32 with snakelike heat exchange tube 2 is connected, described air deflector 4 comprises multiple cellular flow-guiding channel, multiple cellular flow-guiding channels composition air deflector 4, the sectional area of described single cellular flow-guiding channel is 550-1400cm2。
Claims (6)
1. an anti-wear low-level (stack-gas) economizer, including housing (1), it is characterised in that be provided with snakelike heat exchange tube (2) in described housing (1)；Described snakelike heat exchange tube (2) is positioned at the pipeline section of lower surface and is provided with V-arrangement friction-proof piece (3)；Described V-arrangement friction-proof piece (3) includes friction-proof piece main body (31) and the collar (32)；The internal diameter of the described collar (32) is more than the external diameter of snakelike heat exchange tube (2)；The pipeline section that described V-arrangement friction-proof piece (3) is positioned at lower surface by the collar (32) with snakelike heat exchange tube (2) is connected.
2. anti-wear low-level (stack-gas) economizer according to claim 1, it is characterised in that described abrasionproof low-level (stack-gas) economizer also includes air deflector (4)；Described air deflector (4) is positioned at the lower section of V-arrangement friction-proof piece (3), gas approach place.
3. anti-wear low-level (stack-gas) economizer according to claim 1, it is characterised in that the outer surface of the friction-proof piece main body (31) of described V-arrangement friction-proof piece (3) is provided with the anti-abrasive coatings (33) that anti-wear material is constituted.
4. anti-wear low-level (stack-gas) economizer according to claim 1, it is characterised in that the friction-proof piece main body (31) of described V-arrangement friction-proof piece (3) adopts 20Cr steel to process.
5. anti-wear low-level (stack-gas) economizer according to claim 2, it is characterised in that described air deflector (4) comprises multiple cellular flow-guiding channel, multiple cellular flow-guiding channels composition air deflector (4).
6. anti-wear low-level (stack-gas) economizer according to claim 5, it is characterised in that the sectional area of described cellular flow-guiding channel is 550-1400cm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520885480.4U CN205352148U (en) | 2015-11-09 | 2015-11-09 | Abrasionproof decreases low -level (stack -gas) economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520885480.4U CN205352148U (en) | 2015-11-09 | 2015-11-09 | Abrasionproof decreases low -level (stack -gas) economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205352148U true CN205352148U (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520885480.4U Expired - Fee Related CN205352148U (en) | 2015-11-09 | 2015-11-09 | Abrasionproof decreases low -level (stack -gas) economizer |
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| Country | Link |
|---|---|
| CN (1) | CN205352148U (en) |
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2015
- 2015-11-09 CN CN201520885480.4U patent/CN205352148U/en not_active Expired - Fee Related
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20201109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |