CN203784923U - Low-temperature multi-effect steam overheating elimination device after installation of steam ejector - Google Patents
Low-temperature multi-effect steam overheating elimination device after installation of steam ejector Download PDFInfo
- Publication number
- CN203784923U CN203784923U CN201320896198.7U CN201320896198U CN203784923U CN 203784923 U CN203784923 U CN 203784923U CN 201320896198 U CN201320896198 U CN 201320896198U CN 203784923 U CN203784923 U CN 203784923U
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- China
- Prior art keywords
- steam
- temperature
- elimination
- water pipe
- desuperheating device
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- Expired - Lifetime
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- 230000008030 elimination Effects 0.000 title claims abstract description 17
- 238000003379 elimination reaction Methods 0.000 title claims abstract description 17
- 238000013021 overheating Methods 0.000 title abstract description 6
- 238000009434 installation Methods 0.000 title abstract description 3
- 239000007921 spray Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 230000001603 reducing effect Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 8
- 229920006395 saturated elastomer Polymers 0.000 abstract description 7
- 238000001704 evaporation Methods 0.000 abstract description 6
- 230000008020 evaporation Effects 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract 4
- 239000000498 cooling water Substances 0.000 abstract 3
- 238000009835 boiling Methods 0.000 abstract 1
- 239000003595 mist Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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- Chimneys And Flues (AREA)
Abstract
The utility model provides a low-temperature multi-effect steam overheating elimination device after installation of a steam ejector. The low-temperature multi-effect steam overheating elimination device comprises a steam pipeline, a cooling device and a cooling water pipe, wherein the cooling device is fixed to the steam pipeline through a fixing flange; the portion, connected with the cooling water pipe, of the cooling device is arranged outside the steam pipeline; the other side, opposite to the side connected with the cooling water pipe, of the cooling device is arranged in the steam pipeline. The additionally installed overheating elimination device sprays mist in the steam pipeline, so that the temperature of steam reaches or approximates to the saturated steam temperature, and the scaling frequency of a heat exchange pipe of an evaporator is reduced. The boiling evaporation caused by the large temperature difference between the inner wall and the outer wall of the heat exchange pipe is avoided, then the heat exchange effect is enhanced, and the production capacity of the evaporator is improved. It can be avoided that as overheated steam with high temperature is used as heating steam, along with increasing of the temperature, the temperature difference for heat transfer increases, the heat transfer coefficient decreases, and the evaporation capacity is reduced.
Description
Technical field
The utility model relates to the elimination superheater for sea water desalinating unit, the elimination superheater of steam after especially a kind of low-temperature multi-effect device steam jet ejector.
Background technology
In 4500 tons of/day MED, heating steam is drawn gas and is done thermal source by four sections, steam turbine, for TVC in MED provides power steam.Steam mainly contains two kinds: superheated steam and saturated vapor, and heat exchange steam plant all requires to use saturated vapor.Although superheated steam has higher enthalpy than saturated vapor, and be not suitable for heat exchange.If superheated steam is directly used in heat exchange, in heat exchanger, first superheat steam temperature is down to saturation temperature, then emits the latent heat of vaporization under constant saturation temperature.Although superheat steam temperature is higher, have than the more heat of saturated vapor, the heat that this part has more is very little compared with the latent heat of vaporization.Superheated steam must be cooled to saturation temperature before condensation, and the heat that superheated steam discharges while being cooled to saturation temperature is little.Moreover, higher overheating steam temperature also can be on heat exchanger tube outer wall formation temperature gradient, produce thermal stress, make the easier fouling of equipment.
Utility model content
Problem to be solved in the utility model is on sea water desalinating unit, to install elimination superheater additional, eliminates the overheated of the interior steam of heat exchanger.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of elimination superheater for sea water desalinating unit, comprise jet chimney, Desuperheating device and desuperheat water pipe, Desuperheating device is fixed on jet chimney by mounting flange, the part that Desuperheating device is connected with desuperheat water pipe is arranged on outside jet chimney, and Desuperheating device is arranged in jet chimney with the relative opposite side that desuperheat water pipe connects.
Further, Desuperheating device 4 comprises the steam temperature reducing shower nozzle 45, shower nozzle square block 41, sparge pipe 42, nozzle connecting acting flange 43, water spray tube coupling 44, the sparge pipe adpting flange 46 that connect in turn.
Further, jet chimney wall is offered aperture, and the steam temperature reducing shower nozzle of Desuperheating device enters in jet chimney by aperture.
Further, the jet angle of steam temperature reducing shower nozzle is 90 °.
Further, nozzle connecting acting flange 43 is bolted with mounting flange 2.
Further, sparge pipe adpting flange 46 is connected desuperheat water pipe with Desuperheating device 4.
Advantage and the good effect that the utlity model has are: the elimination superheater installing additional is at jet chimney internal spraying, steam is reached or approach the temperature of saturated vapor, have reduced heat exchange pipe of evaporator scale formation; Solve the explosive evaporation causing more greatly due to the heat exchanger tube inner and outer wall temperature difference, and then strengthened heat transfer effect, improved evaporimeter production capacity; Avoided with overtemperature compared with high steam do heating steam use and cause along with temperature increases, the temperature difference of heat transfer increases, heat transfer coefficient will reduce, the phenomenon of evaporation capacity decline.
Brief description of the drawings
Fig. 1 is assembling schematic diagram of the present utility model;
Fig. 2 is the structural representation of Desuperheating device.
In figure:
1, jet chimney; 2, mounting flange; 3, desuperheat water pipe;
4, Desuperheating device; 41, shower nozzle square block; 42, sparge pipe;
43, nozzle connecting acting flange; 44, water spray tube coupling; 45, steam temperature reducing shower nozzle.
46, sparge pipe adpting flange.
Detailed description of the invention
The elimination superheater of steam after a kind of low-temperature multi-effect device steam jet ejector, comprise jet chimney 1, Desuperheating device 4 and desuperheat water pipe 3, Desuperheating device 4 is fixed on jet chimney 1 by mounting flange 2, the part that Desuperheating device 4 is connected with desuperheat water pipe 3 is arranged on outside jet chimney 1, and the relative opposite side that Desuperheating device 4 connects with desuperheat water pipe 3 is arranged in jet chimney 1.
Desuperheating device 4 comprises the steam temperature reducing shower nozzle 45, shower nozzle square block 41, sparge pipe 42, nozzle connecting acting flange 43, water spray tube coupling 44, the sparge pipe adpting flange 46 that connect in turn.
Jet chimney 1 wall is offered aperture, and the steam temperature reducing shower nozzle 45 of Desuperheating device 4 enters in jet chimney 1 by aperture.
The jet angle of steam temperature reducing shower nozzle 45 is 90 °.
Nozzle connecting acting flange 43 is bolted with mounting flange 2.
Sparge pipe adpting flange 46 is connected desuperheat water pipe 3 with Desuperheating device 4.
Install desuperheat nozzle additional and add reload request:
1. desuperheat nozzle is chosen the requirement that must possess energy atomizing particle size, and atomizing effect is better just better to steam temperature reducing effect.(nozzle is chosen the shower nozzle of energy atomizing particle size, and under the pressure of 2bar, water smoke particle diameter is probably 40～50um.)
2. nozzle ejection droplet is excessive, very difficult floating, can drop on fast on tube wall, has lost heat transfer area.So when nozzle is installed, requiring desuperheat water pipe to walk bending angle is 135 °, meets nozzle exit pressure requirement, reaches atomizing effect.
3. nozzle is installed at apart from 500～600 millimeters of places of TVC outlet, can give like this and eliminate overheated enough space lengths that leaves.If it is nearer that first effect mouth is entered apart from steam in nozzle installation site, more than steam flow rate reaches 20～30m/s in pipeline, can cause like this droplet to have little time evaporation and just enter heat exchanger, eliminating superheating process will interrupt.
Install additional after Desuperheating device, superheated steam is entered before evaporimeter and dropped to 70 degree saturated vapors, be conducive to manage condensation and the pipe off-lying sea evaporation of water of interior steam.
Eliminate MED and entered first effect steam admission side temperature overheating operation problem always, slowed down the fouling of first effect heat exchanger tube.
Install additional after Desuperheating device, guarantee that MED is under safe condition, stable operation.
Above embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variation and improvement etc. of doing according to the utility model scope, within all should still belonging to this patent covering scope.
Claims (6)
1. the elimination superheater of steam after a low-temperature multi-effect device steam jet ejector, it is characterized in that: comprise jet chimney, Desuperheating device and desuperheat water pipe, Desuperheating device is fixed on jet chimney by mounting flange, the part that Desuperheating device is connected with desuperheat water pipe is arranged on outside jet chimney, and Desuperheating device is arranged in jet chimney with the relative opposite side that desuperheat water pipe connects.
2. elimination superheater according to claim 1, is characterized in that: Desuperheating device comprises the steam temperature reducing shower nozzle, shower nozzle square block, sparge pipe, nozzle connecting acting flange, water spray tube coupling, the sparge pipe adpting flange that connect in turn.
3. elimination superheater according to claim 2, is characterized in that: jet chimney wall is offered aperture, the steam temperature reducing shower nozzle of Desuperheating device enters in jet chimney by aperture.
4. according to the elimination superheater described in claim 2 or 3, it is characterized in that: the jet angle of steam temperature reducing shower nozzle is 90 °.
5. elimination superheater according to claim 2, is characterized in that: nozzle connecting acting flange and mounting flange are bolted.
6. elimination superheater according to claim 2, is characterized in that: sparge pipe adpting flange is connected desuperheat water pipe with Desuperheating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320896198.7U CN203784923U (en) | 2013-12-30 | 2013-12-30 | Low-temperature multi-effect steam overheating elimination device after installation of steam ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320896198.7U CN203784923U (en) | 2013-12-30 | 2013-12-30 | Low-temperature multi-effect steam overheating elimination device after installation of steam ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784923U true CN203784923U (en) | 2014-08-20 |
Family
ID=51321103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320896198.7U Expired - Lifetime CN203784923U (en) | 2013-12-30 | 2013-12-30 | Low-temperature multi-effect steam overheating elimination device after installation of steam ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425514A (en) * | 2019-08-22 | 2019-11-08 | 威立雅（哈尔滨）热电有限公司 | Superheated steam temperature reduction device |
-
2013
- 2013-12-30 CN CN201320896198.7U patent/CN203784923U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425514A (en) * | 2019-08-22 | 2019-11-08 | 威立雅（哈尔滨）热电有限公司 | Superheated steam temperature reduction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211229 Address after: 643000 whole building, No. 150, Huangjueping Road, Wuxing Street, Ziliujing District, Zigong City, Sichuan Province Patentee after: DONGFANG BOILER GROUP Co.,Ltd. Address before: 300460 No. 1, Lingang Economic Zone, Binhai New Area, Tianjin Patentee before: ZHONGHE SEAWATER DESALINATION ENGINEERING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |
|
| CX01 | Expiry of patent term |