CN203584485U - High-pressure and low-pressure two-stage industrial steam extracting and heat supplying device for steam turbine - Google Patents
High-pressure and low-pressure two-stage industrial steam extracting and heat supplying device for steam turbine Download PDFInfo
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- CN203584485U CN203584485U CN201320809480.7U CN201320809480U CN203584485U CN 203584485 U CN203584485 U CN 203584485U CN 201320809480 U CN201320809480 U CN 201320809480U CN 203584485 U CN203584485 U CN 203584485U
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Abstract
The utility model discloses a high-pressure and low-pressure two-stage industrial steam extracting and heat supplying device for a steam turbine. The high-pressure and low-pressure two-stage industrial steam extracting and heat supplying device comprises a high pressure cylinder, a medium pressure cylinder, and a low pressure cylinder, wherein a high pressure bypass system is arranged between a steam inlet pipe and a steam discharge pipe of the high pressure cylinder, a low pressure bypass system is arranged on a steam inlet pipeline of the medium pressure cylinder, a steam pipeline in front of the high pressure bypass system is connected with a high pressure steam extracting pipeline, and a steam pipeline in front of the low pressure bypass system is connected with a low pressure steam extracting pipeline. A condensing steam turbine generator unit is transformed into a heat supply unit, so that the unit has both functions of generating electricity and supplying heat. The maximum extraction flow of the high pressure steam of the unit is 100 t/h, the maximum extraction flow of the low pressure steam of the unit is 130 t/h, and the total maximum extraction flow of steam is 230 t/h. The high-pressure and low-pressure extracted steam is subjected to temperature and pressure reduction, and is then conveyed through a heat supply network to a heat user, so that the requirements of the high-pressure and low-pressure two-stage steam of the heat user are met.
Description
Technical field
The utility model relates to condensing steam turbine generator set technical field, and especially a kind of 220MW condensing steam turbine generator set is realized high low pressure two-stage extraction steam for factories heating arrangement.
Background technique
Owing to there is the cold source energy of steam discharge in condensing steam turbine generator set, efficiency of energy utilization is lower.The efficiency of energy utilization of the 1000MW condensing steam turbine generator set that the highest grade at present, also only reach 45% left and right, the 200MW(of the same type of Er Liu electricity company is containing the 220MW through the transformation of increase-volume consumption reduction) efficiency of energy utilization of level condensing steam turbine generator group is only 35% left and right.Because 200MW level condensing steam turbine generator set efficiency of energy utilization is low, energy waste is large; Therefore,, since 2005, domestic 200MW level condensing steam turbine generator set carries out heat supply process transformation successively, and straight condensing turbine generator set is transformed into heat, electric dual-purpose unit.Its structure as shown in Figure 1, the superheated vapor of coming from boiler superheater enters steam turbine high-pressure cylinder 1 by two main steam lines 11, high-pressure cylinder steam discharge after acting drains into boiler reheater by two steam lines 12, steam after reheater heating enters Steam Turbine Through IP Admission 2 actings through two steam lines 21, / 3rd of a steam total amount after intermediate pressure cylinder 2 actings enters and intermediate pressure cylinder low-pressure section (low pressure (LP) cylinder 3), the steam that accounts in addition total amount 2/3rds drains into low pressure (LP) cylinder 4 and 5 by connecting tube 22, continues acting.High, medium and low cylinder pressure and generator coaxle, the expansion by steam in cylinder is done work, the rotation of pushing turbine macro-axis, thus drive generator generating.In order to facilitate unit starting and accident treatment, hp by-pass system (being equivalent to short circuit high-pressure cylinder) is set between high-pressure cylinder steam inlet pipe and exhaust steam pipe, by high pressure turbine by valve 13, carry out hp by-pass system and control, regulate high pressure turbine by steam flow; At intermediate pressure cylinder admission install pipeline low-pressure bypass system (being equivalent to short circuit intermediate pressure cylinder, low pressure (LP) cylinder), by low voltage bypass valve 23, control, regulate low voltage bypass flow.During normal operation, high pressure turbine by valve 13 is all closed with low pressure bypass valve arrangement 23, only at unit starting, stop or accident in the situation that, in order to guarantee the safety of unit, open respectively high pressure bypass valve 13 and low voltage bypass valve 23 and pass through to regulate aperture to control the steam flow of high pressure turbine by and low voltage bypass.
The heat supply renovation technique that 200MW level condensing steam turbine generator group adopts at present, mainly to draw gas to punching on the connecting tube between low pressure (LP) cylinder by the intermediate pressure cylinder steam discharge at steam turbine, the steam of extracting out is for urban heating heat supply, 245 ℃ of extraction pressure 0.25MPa, temperature, peak rate of flow 200t/h.
Model utility content
The utility model, for the deficiencies in the prior art, proposes a kind of steam turbine high low pressure two-stage extraction steam for factories heating arrangement, and power generation and heat supply carries out simultaneously, and heating load is large.
In order to realize above-mentioned model utility object, the utility model provides following technological scheme: a kind of steam turbine high low pressure two-stage extraction steam for factories heating arrangement, comprise high-pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder, between the steam inlet pipe of high-pressure cylinder and exhaust steam pipe, be provided with hp by-pass system, at intermediate pressure cylinder admission install pipeline low-pressure bypass system, the steam line before hp by-pass system is connected with high pressure extraction pipeline; Steam line before low-pressure bypass system is connected with low-pressure pumping steam pipeline.
Further, described high pressure extraction pipeline is provided with high pressure extraction power door operation and high pressure steam converter valve.
Further, described low-pressure pumping steam pipeline is provided with low-pressure pumping steam power door operation and low pressure steam converter valve.
Further, described hp by-pass system is high pressure bypass valve.
Further, described low-pressure bypass system is low voltage bypass valve.
Compared with prior art, the utlity model has following advantage: transform pure condensate Turbo-generator Set as heat supply unit, realize that unit generates electricity, heat supply function simultaneously.The maximum amount of drawing gas of unit high pressure steam is that the maximum amount of drawing gas of 100t/h, low pressure steam is 130t/h, and adding up to the maximum amount of drawing gas is 230t/h.High and low pressure draws gas and after pressure and temperature reducing, passes through heat supply network, is delivered to hot user, can meet the demand of hot user's high and low pressure two-stage steam.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail, the description of this part is only exemplary and explanatory, should not have any restriction to protection domain of the present utility model.
A kind of steam turbine high low pressure two-stage extraction steam for factories heating arrangement as shown in Figure 2, the superheated vapor of coming from boiler superheater enters steam turbine high-pressure cylinder 1 by two main steam lines 11, high-pressure cylinder steam discharge after acting drains into boiler reheater by two steam lines 12, steam after reheater heating enters Steam Turbine Through IP Admission 2 actings through two steam lines 21, / 3rd of a steam total amount after intermediate pressure cylinder 2 actings enters and intermediate pressure cylinder low-pressure section (low pressure (LP) cylinder 3), the steam that accounts in addition total amount 2/3rds drains into low pressure (LP) cylinder 4 and 5 by connecting tube 22, continue acting.High, medium and low cylinder pressure and generator coaxle, the expansion by steam in cylinder is done work, the rotation of pushing turbine macro-axis, thus drive generator generating.In order to facilitate unit starting and accident treatment, hp by-pass system (being equivalent to short circuit high-pressure cylinder) is set between high-pressure cylinder steam inlet pipe and exhaust steam pipe, by high pressure turbine by valve 13, carry out hp by-pass system and control, regulate high pressure turbine by steam flow; At intermediate pressure cylinder admission install pipeline low-pressure bypass system (being equivalent to short circuit intermediate pressure cylinder, low pressure (LP) cylinder), by low voltage bypass valve 23, control, regulate low voltage bypass flow.During normal operation, high pressure turbine by valve 13 is all closed with low pressure bypass valve arrangement 23, only at unit starting, stop or accident in the situation that, in order to guarantee the safety of unit, open respectively high pressure bypass valve 13 and low voltage bypass valve 23 and pass through to regulate aperture to control the steam flow of high pressure turbine by and low voltage bypass.
Steam line before high pressure bypass valve 13 picks out high pressure extraction pipeline 14, rear for supplying industrial heat user, vapor pressure 10MPa, 500 ℃ of temperature, peak rate of flow 100t/h after pressure and temperature reducing to heat supply network by high pressure extraction power door operation 15 and high pressure steam converter valve 16; Steam line before low voltage bypass valve 23 picks out low-pressure pumping steam pipeline 24, rear for to heat supply network heat supply user by low-pressure pumping steam power door operation 25 and low pressure steam converter valve 26, vapor pressure 1.3MPa, 320 ℃ of temperature, peak rate of flow 130t/h after pressure and temperature reducing.
This heat supply process modification scheme is different from the heat supply process modification scheme that current domestic 200MW level condensing steam turbine generator set adopts, what adopt is to punch and draw gas on steam line before turbine high-pressure by-pass valve and the steam line before low voltage bypass valve, draw gas and after temperature-decreased pressure reducer, supply the industrial heat user to heating network, realized high pressure and low pressure two-stage extraction steam for factories.
By above technical innovation, transform pure condensate Turbo-generator Set as heat supply unit, realize that unit generates electricity simultaneously, heat supply function.The maximum amount of drawing gas of unit high pressure steam is that the maximum amount of drawing gas of 100t/h, low pressure steam is 130t/h, and adding up to the maximum amount of drawing gas is 230t/h.High and low pressure draws gas and after pressure and temperature reducing, passes through heat supply network, be delivered to hot user, can meet the demand of hot user's high and low pressure two-stage steam, compare existing renovation technique and only can supply heating, this technology can meet the diversity of industrial heat user to different pressures grade, temperature requirements such as chemical plant, brewery, the arcola, the small turbine generator set that substitute industrial heat user, reach energy-saving and cost-reducing object.
Claims (5)
1. a steam turbine high low pressure two-stage extraction steam for factories heating arrangement, comprise high-pressure cylinder, intermediate pressure cylinder and low pressure (LP) cylinder, between the steam inlet pipe of high-pressure cylinder and exhaust steam pipe, be provided with hp by-pass system, at intermediate pressure cylinder admission install pipeline low-pressure bypass system, it is characterized in that: the steam line before hp by-pass system is connected with high pressure extraction pipeline; Steam line before low-pressure bypass system is connected with low-pressure pumping steam pipeline.
2. steam turbine high low pressure two-stage extraction steam for factories heating arrangement as claimed in claim 1, is characterized in that: described high pressure extraction pipeline is provided with high pressure extraction power door operation and high pressure steam converter valve.
3. steam turbine high low pressure two-stage extraction steam for factories heating arrangement as claimed in claim 1 or 2, is characterized in that: described low-pressure pumping steam pipeline is provided with low-pressure pumping steam power door operation and low pressure steam converter valve.
4. steam turbine high low pressure two-stage extraction steam for factories heating arrangement as claimed in claim 1, is characterized in that: described hp by-pass system is high pressure bypass valve.
5. steam turbine high low pressure two-stage extraction steam for factories heating arrangement as claimed in claim 1, is characterized in that: described low-pressure bypass system is low voltage bypass valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320809480.7U CN203584485U (en) | 2013-12-07 | 2013-12-07 | High-pressure and low-pressure two-stage industrial steam extracting and heat supplying device for steam turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320809480.7U CN203584485U (en) | 2013-12-07 | 2013-12-07 | High-pressure and low-pressure two-stage industrial steam extracting and heat supplying device for steam turbine |
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| CN203584485U true CN203584485U (en) | 2014-05-07 |
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| CN201320809480.7U Expired - Fee Related CN203584485U (en) | 2013-12-07 | 2013-12-07 | High-pressure and low-pressure two-stage industrial steam extracting and heat supplying device for steam turbine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696819A (en) * | 2013-12-07 | 2014-04-02 | 广西柳州发电有限责任公司 | High pressure and low pressure two-stage industrial steam extraction heat supply device for steam turbine |
| CN110953571A (en) * | 2019-10-16 | 2020-04-03 | 孙少强 | Heat supply steam residual pressure cascade utilization system applied to coal-fired heat supply unit |
-
2013
- 2013-12-07 CN CN201320809480.7U patent/CN203584485U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696819A (en) * | 2013-12-07 | 2014-04-02 | 广西柳州发电有限责任公司 | High pressure and low pressure two-stage industrial steam extraction heat supply device for steam turbine |
| CN103696819B (en) * | 2013-12-07 | 2015-10-28 | 广西柳州发电有限责任公司 | Steam turbine high low pressure two-stage extraction steam for factories heating arrangement |
| CN110953571A (en) * | 2019-10-16 | 2020-04-03 | 孙少强 | Heat supply steam residual pressure cascade utilization system applied to coal-fired heat supply unit |
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| C14 | Grant of patent or utility model | ||
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tang Junsheng Inventor after: Mai Yongjun Inventor after: Wu Qiang Inventor after: Wang Qiang Inventor after: Chen Xianhui Inventor after: Huang Jichang Inventor after: Lin Qiang Inventor before: Tang Junsheng Inventor before: Chen Xianhui Inventor before: Wu Qiang Inventor before: Wang Qiang Inventor before: Huang Jichang Inventor before: Lin Qiang |
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Free format text: CORRECT: INVENTOR; FROM: TANG JUNSHENG CHEN XIANHUI WU QIANG WANG QIANG HUANG JICHANG LIN QIANG TO: TANG JUNSHENG MAI YONGJUN WU QIANG WANG QIANG CHEN XIANHUI HUANG JICHANG LIN QIANG |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20151207 |
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| EXPY | Termination of patent right or utility model |