CN203628621U - Medium-pressure boiler water-circulation system - Google Patents
Medium-pressure boiler water-circulation system Download PDFInfo
- Publication number
- CN203628621U CN203628621U CN201320873012.6U CN201320873012U CN203628621U CN 203628621 U CN203628621 U CN 203628621U CN 201320873012 U CN201320873012 U CN 201320873012U CN 203628621 U CN203628621 U CN 203628621U
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- China
- Prior art keywords
- superheater
- boiler
- water
- valve
- circulation system
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- Expired - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000000498 cooling water Substances 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 239000008234 soft water Substances 0.000 abstract description 5
- 239000003245 coal Substances 0.000 abstract 3
- 238000007599 discharging Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model relates to a medium-pressure boiler water-circulation system. The system comprises a boiler water supply loop and a superheater backwater branch, wherein the boiler water supply loop comprises a soft water tank, a deaerator and a coal economizer which are connected together by pipelines, the coal economizer is connected with a boiler, the deaerator is also connected with a superheater, a water feeding pump is mounted between the deaerator and the superheater, the superheater is also connected with the boiler, and cooling water exported out from the superheater is delivered to the coal economizer through a superheater backwater valve 2; the superheater backwater branch comprises a three-way valve, the first end of the three-way valve is connected with the superheater, the second end of the three-way valve is connected with the superheater backwater valve 2, the third end of the three-way valve is connected with the soft water tank, and a superheater backwater valve 1 is arranged between the soft water tank and the three-way valve. The system has the advantages of simple structure, convenience in mounting, low cost and good steam boosting effect.
Description
Technical field
The utility model relates to steam boiler technical field, especially relates to a kind of medium-pressure boiler water circulation system that can fast lifting steam generator system pressure and temperature.
Background technology
In chemical field; chemical project need to be used middle pressure steam to heat up or conduct protection vapour in the time going into operation; middle pressure steam generally comes from the medium-pressure boiler in project assorted construction; this medium-pressure boiler is in the time that the project initial stage is used; because steam consumption is few, pressure is high, the superheat steam temperature of therefore exporting in boiler can exceed design load very soon.The temperature that reduces superheated steam in conventional art adopts the method that strengthens superheater cooling water confluent more, because the cooling water of discharging from superheater all enters boiler, very easily causes thus that water level in the boiler is high, steam pressure declines.
Summary of the invention
The purpose of this utility model is to overcome in prior art for reducing superheat steam temperature, the boiler water level that strengthens superheater cooling water amount and cause is high, boiler blow-off amount is large, boiler pressure cannot reach the defect of just conventional vapour requirement all the time, cooling water in superheater is incorporated in softened water tank, thereby solve the too high problem of boiler middle water level, the technical scheme adopting is: a kind of medium-pressure boiler water circulation system, comprise boiler water supply loop, described boiler water supply loop comprises the softened water tank linking together by pipeline, oxygen-eliminating device and economizer, described economizer is connected with boiler, described oxygen-eliminating device is also connected with superheater, between oxygen-eliminating device and superheater, feed pump is housed, described superheater is also connected with boiler, the cooling water of exporting in superheater flows to economizer through superheater back-water valve (BWV) II, it is characterized in that: described water circulation system also comprises superheater backwater branch road, described superheater backwater branch road comprises triple valve, described triple valve first end connects superheater, the second end connects described superheater back-water valve (BWV) II, the 3rd end is connected with described softened water tank, between softened water tank and triple valve, be also provided with superheater back-water valve (BWV) I.
Technical characterictic of the present utility model also has: between described feed pump and economizer, be provided with boiler feedwater automatic regulating valve.
Technical characterictic of the present utility model also has: between described feed pump and superheater, be provided with cooling water automatic regulating valve.
The beneficial effects of the utility model are: the utility model, by superheater backwater branch road, is introduced cooling water unnecessary in superheater in softened water tank, has changed the low phenomenon of steam pressure causing because the water yield is excessive in boiler, can Quick vapor pressure.The utlity model has advantage simple in structure, that installation is convenient, with low cost, result of use is good.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model structural representation.
Wherein: 1 softened water tank, 2 oxygen-eliminating devices, 3 feed pumps, 4 superheater back-water valve (BWV) I, 5 cooling water automatic regulating valves, 6 triple valves, 7 superheater back-water valve (BWV) II, 8 boiler feedwater automatic regulating valves, 9 superheaters, 10 economizers, 11 boilers.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described.The utility model discloses a kind of medium-pressure boiler water circulation system, comprise boiler water supply loop and superheater backwater branch road.Wherein boiler water supply loop comprises the softened water tank 1, oxygen-eliminating device 2 and the economizer 10 that link together by pipeline, economizer 10 is connected with boiler 11, oxygen-eliminating device 2 is also connected with superheater 9, between oxygen-eliminating device 2 and superheater 9, feed pump 3 is housed, superheater 9 is connected with boiler 11, and from superheater 9, the cooling water of output flows to economizer 10 through superheater back-water valve (BWV) II 7.Superheater backwater branch road comprises triple valve 6, and triple valve 6 first ends connect superheater 9, the second ends connection superheater back-water valve (BWV) II 7, the three ends and are connected with softened water tank 1, are also provided with superheater back-water valve (BWV) I 4 between softened water tank 1 and triple valve 6.Between feed pump 3 and economizer 10, be provided with boiler feedwater automatic regulating valve 8.Between feed pump 3 and superheater 9, be provided with cooling water automatic regulating valve 5.
In the time that steam generator system is worked, deliver to oxygen-eliminating device 2 from the soft water of softened water tank 1, after the dissolved oxygen in the interior removal soft water of oxygen-eliminating device 2, deliver to respectively superheater 9 and boiler 11 by feed pump 3; Superheater cooling water automatic regulating valve 5 and superheater back-water valve (BWV) II 7 are set between boiler feed pump 3 and superheater 9, superheater cooling water automatic regulating valve 5 regulates the cooling water confluent of superheater 9 according to the temperature of superheated steam, the temperature of superheated steam is no more than 400 ℃; In the time that boiler is normally produced, close superheater back-water valve (BWV) I 4, open superheater back-water valve (BWV) II 7, the cooling water of discharging from superheater 9 flow to boiler feedwater automatic regulating valve 8 through superheater back-water valve (BWV) II 7 and deliver to boiler 11 after economizer 10 preheating, boiler feedwater automatic regulating valve 8 regulates boiler feed capacity, and boiler feed capacity insufficient section is directly sent into boiler 11 after feed pump 3, boiler feedwater automatic regulating valve 8, economizer 10 preheatings.In the time that boiler displacement is few, close superheater back-water valve (BWV) II 7, open superheater back-water valve (BWV) I 4, the cooling water backwater of superheater 9 is delivered to softened water tank 1 through superheater back-water valve (BWV) I 4; In the time that boiler water level declines, close superheater back-water valve (BWV) I 4, open superheater back-water valve (BWV) II 7 to boiler fills; In the time that boiler water level is high, then open superheater back-water valve (BWV) I 4, close overheated vapour back-water valve (BWV) II 7.
Claims (3)
1. a medium-pressure boiler water circulation system, comprise boiler water supply loop, described boiler water supply loop comprises the softened water tank linking together by pipeline, oxygen-eliminating device and economizer, described economizer is connected with boiler, described oxygen-eliminating device is also connected with superheater, between oxygen-eliminating device and superheater, feed pump is housed, described superheater is also connected with boiler, the cooling water of exporting in superheater flows to economizer through superheater back-water valve (BWV) II, it is characterized in that: described water circulation system also comprises superheater backwater branch road, described superheater backwater branch road comprises triple valve, described triple valve first end connects superheater, the second end connects described superheater back-water valve (BWV) II, the 3rd end is connected with described softened water tank, between softened water tank and triple valve, be also provided with superheater back-water valve (BWV) I.
2. according to medium-pressure boiler water circulation system claimed in claim 1, it is characterized in that: between described feed pump and economizer, be provided with boiler feedwater automatic regulating valve.
3. according to medium-pressure boiler water circulation system claimed in claim 1, it is characterized in that: between described feed pump and superheater, be provided with cooling water automatic regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320873012.6U CN203628621U (en) | 2013-12-28 | 2013-12-28 | Medium-pressure boiler water-circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320873012.6U CN203628621U (en) | 2013-12-28 | 2013-12-28 | Medium-pressure boiler water-circulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203628621U true CN203628621U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320873012.6U Expired - Lifetime CN203628621U (en) | 2013-12-28 | 2013-12-28 | Medium-pressure boiler water-circulation system |
Country Status (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613461A (en) * | 2015-02-02 | 2015-05-13 | 华北电力科学研究院有限责任公司 | Low-pressure water supply system for fuel gas thermal power plant and start and stop method thereof |
| CN104613460A (en) * | 2015-02-02 | 2015-05-13 | 华北电力科学研究院有限责任公司 | Medium-pressure water supply system for fuel gas thermal power plant and start and stop method thereof |
| CN104613458A (en) * | 2015-01-26 | 2015-05-13 | 李保军 | Heat energy comprehensive utilization device of heat-power system with steam boiler |
| CN108002603A (en) * | 2018-02-01 | 2018-05-08 | 苏州迪森能源技术有限公司 | Paper-making drying cylinder and boiler water cycle processing system and processing method |
| CN108101269A (en) * | 2018-02-06 | 2018-06-01 | 苏州迪森能源技术有限公司 | Boiler water treatment system |
-
2013
- 2013-12-28 CN CN201320873012.6U patent/CN203628621U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613458A (en) * | 2015-01-26 | 2015-05-13 | 李保军 | Heat energy comprehensive utilization device of heat-power system with steam boiler |
| CN104613461A (en) * | 2015-02-02 | 2015-05-13 | 华北电力科学研究院有限责任公司 | Low-pressure water supply system for fuel gas thermal power plant and start and stop method thereof |
| CN104613460A (en) * | 2015-02-02 | 2015-05-13 | 华北电力科学研究院有限责任公司 | Medium-pressure water supply system for fuel gas thermal power plant and start and stop method thereof |
| CN104613461B (en) * | 2015-02-02 | 2016-06-15 | 华北电力科学研究院有限责任公司 | Gas power station low pressure feed water system and start and stop method thereof |
| CN108002603A (en) * | 2018-02-01 | 2018-05-08 | 苏州迪森能源技术有限公司 | Paper-making drying cylinder and boiler water cycle processing system and processing method |
| CN108101269A (en) * | 2018-02-06 | 2018-06-01 | 苏州迪森能源技术有限公司 | Boiler water treatment system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |
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| CX01 | Expiry of patent term |