CN101769175A - Dehumidifying device for hollow stationary blade of steam turbine through heating and blowing - Google Patents
Dehumidifying device for hollow stationary blade of steam turbine through heating and blowing Download PDFInfo
- Publication number
- CN101769175A CN101769175A CN201010106063A CN201010106063A CN101769175A CN 101769175 A CN101769175 A CN 101769175A CN 201010106063 A CN201010106063 A CN 201010106063A CN 201010106063 A CN201010106063 A CN 201010106063A CN 101769175 A CN101769175 A CN 101769175A
- Authority
- CN
- China
- Prior art keywords
- stationary blade
- slit
- hollow
- blade
- hollow stationary
- 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.)
- Pending
Links
Images
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a dehumidifying device for a hollow stationary blade of a steam turbine through heating and blowing. A stationary blade at a moist steam stage of the steam turbine is processed into a hollow blade; a proper position on back arc or inner arc of the hollow stationary blade or an outlet of the stationary blade is provided with a blowing slit; a flow of high-pressure high-temperature steam from a high-pressure section of the steam turbine is introduced into the hollow stationary blade through a valve and a steam inlet pipe; the high-pressure high-temperature steam removes the water film flowing on the surface of the stationary blade under the double action of heating and blowing of the slit so as to reduce the number, diameter size and distribution of secondary water drops at the outlet of the stationary blade. The dehumidifying device of the invention can effectively prevent or relieve water erosion of a movable blade so as to improve the safe running performance of the steam turbine, and has a simple structure and good dehumidification effect.
Description
Technical field
The invention belongs to the power engineering technology field, relate to the inner heating and blowing moisture-catcher of hollow stationary blade of steam turbine.
Background technique
High-power thermal power steam turbine, nuclear steam turbine and nuclear power warship are very serious with the movable vane water erosion of steam turbine.Effectively remove the moisture in the steam turbine, preventing or alleviating the movable vane water erosion is to guarantee one of key technology of steam turbine safe and reliable operation.
The stator blade of steam turbine wet vapor level is processed into hollow blade, on stator blade inner arc and back of the body arc correct position, offers the slit.A small amount of high-pressure and high-temperature steam is introduced hollow stationary blade inside, and high-pressure and high-temperature steam heats the lip-deep mobile moisture film of stator blade on the one hand, makes the mobile moisture film heat absorption of part and flashes to steam; On the other hand by the moisture film stator blade surface of blowing off of will flowing, slit.The comprehensive function that inner heating of hot steam and slit purge can significantly reduce moisture film and export the limit owing to tearing coarse water droplet number and the diameter that forms with secondary-atomizing at stator blade, reaches the purpose that prevents or alleviate the moving vane water erosion.Reasonably the gap structure pattern of slit purge position, optimization and size and best purging speed can be removed the mobile moisture film on stator blade surface effectively, improve the safety reliability of steam turbine operation.As seen the basis that is widely used of hollow stationary blade slot heating and blowing moisture-catcher.At present, the document and the patent that also do not have hollow stationary blade heating and blowing moisture-catcher.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, inner heating and blowing moisture-catcher of the outstanding effect of drying hollow stationary blade of steam turbine.For reaching above purpose, the present invention takes following technological scheme to be achieved:
Air pump is connected with electric heater, electric heater is connected with plenum, plenum is connected with hollow stationary blade, the back of the body arc of hollow stationary blade has the inner arc that purges slit or hollow stationary blade and has the lagging edge that purges slit or hollow stationary blade and have and purge the slit, admission valve is housed at the top of hollow stationary blade, the admission pipeline is connected with the hollow chamber of hollow stationary blade, purging slit direction on inner arc and the back of the body arc is that the angle of slit center line and blade surface is 45 ° along the steam flow direction; Gap width is 1.0～1.5mm; The purging slit direction of lagging edge is that the angle of slit center line and blade surface is 90 ° along the steam flow direction; Gap width is 1.0mm.
The inner heating and blowing moisture-catcher of hollow stationary blade of steam turbine of the present invention can effectively reduce the number and the diameter of stator blade outlet limit secondary water droplet, thereby prevents or alleviate the moving vane water erosion.In addition, this apparatus structure is simple, is easy to realize.Can be used widely in steam turbine at high-power thermal power steam turbine, nuclear steam turbine and nuclear power warship.
Description of drawings
Fig. 1 is the system schematic in hollow stationary blade heating and blowing slit,
Wherein: the 1-air pump; The 2-electric heater; The 3-thermoscope; The 4-static manometer; The small-sized plenum of 5-; The 6-modulating valve; The 7-modulating valve; The 8-hollow stationary blade.
Fig. 2 is the structural representation that hollow stationary blade back of the body arc is offered the heating and blowing slit,
(a) hollow stationary blade back of the body arc is offered heating and blowing slit cross sectional representation
(b) hollow stationary blade back of the body arc is offered heating and blowing slit front-view schematic diagram
Wherein: the stator blade of 9-wet vapor level; The hollow chamber of 10-; Purging slit on the 11-back of the body arc; The admission pipeline of 12-high-pressure and high-temperature steam; The 13-admission valve.
Fig. 3 is the structural representation (the A-A sectional drawing among Fig. 1) that the hollow stationary blade inner arc is offered the heating and blowing slit, wherein: the stator blade of 14-wet vapor level; The hollow chamber of 10-; Purging slit on the 15-inner arc.
Fig. 4 is the structural representation (the A-A sectional drawing among Fig. 2) that the hollow stationary blade lagging edge is offered the heating and blowing slit, wherein: the stator blade of 16-wet vapor level; The hollow chamber of 10-; Purging slit on the 17-lagging edge.
Fig. 5 is that hollow stationary blade purges gap structure and size enlarged view.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing:
With reference to Fig. 1, the inner heating and blowing moisture-catcher of a kind of hollow stationary blade of steam turbine, the hot air that is used for heating and blowing is to be finished by air pump 1, electric heater 2, small-sized plenum 5 and some modulating valve 6,7, air pump is constantly sent into air in the heater, to certain temperature, small-sized plenum is used for steady pressure and regulate hot air to the temperature 3 that needs to heater with air heating; Heat air pressure 4 is regulated as required.
With reference to Fig. 2, hollow stationary blade comprises that the stator blade 1 with steam turbine wet vapor level is processed into hollow chamber 2, have at stator blade inner arc or the back of the body arc or lagging edge and to purge slit 3, purging slit 3 communicates with the hollow chamber 2 of stator blade, admission pipeline 4 is housed at the top of hollow stationary blade links to each other, admission valve 5 is installed on the admission pipeline with the hollow chamber 2 of stator blade.Purging slit 3 is opened in the inner arc of wet vapor level hollow stationary blade or carries on the back arc or lagging edge; Purging slit direction on inner arc and the back of the body arc is that the angle of slit center line and blade surface is 45 ° along the steam flow direction; Gap width is 1.0～1.5mm; The purging slit direction of lagging edge is that the angle of slit center line and blade surface is 90 ° along the steam flow direction; Gap width is 1.0mm.
Fig. 3 and shown in Figure 4, a kind of dehumidifying device for hollow stationary blade of steam turbine through heating and blowing, the purging slit 3 that comprises the stator blade 1 of wet vapor level, stator blade is processed into hollow chamber 2, offers on the inner arc of hollow stationary blade or back of the body arc or lagging edge, admission pipeline 4 is housed at the stator blade top links with the hollow chamber of stator blade, steam flow is controlled and is regulated by valve 5.
With reference to shown in Figure 5, be that amplify and dimensioned drawing the part that purges slit 3 on stator blade inner arc and the back of the body arc.Purging slit direction on inner arc and the back of the body arc is that the angle of slit center line and blade surface is 45 ° along the steam flow direction; Gap width is 1.0～1.5mm; The purging slit direction of lagging edge is that the angle of slit center line and blade surface is 90 ° along steam flow direction (shown in Figure 3); Gap width is 1.0mm.Working procedure
Groundwork process of the present invention is: introduce one high-pressure and high-temperature steam from the turbine high-pressure section, steam flow is regulated and is controlled by valve 5, and steam enters the hollow chamber 2 of stator blade by the admission pipeline 4 at stator blade top; High-pressure and high-temperature steam is the lip-deep mobile moisture film of the heating stator blade of the wall by hollow stationary blade 1 on the one hand, flows out by slit 3 on the other hand and with the mobile moisture film on the stator blade surface stator blade surface of blowing off.The comprehensive function that inner heating of steam and slit purge can significantly reduce moisture film and export the limit owing to tearing coarse water droplet number and the diameter that forms with secondary-atomizing at stator blade, reaches the purpose that prevents or alleviate the moving vane water erosion.
Claims (1)
1. the inner heating and blowing moisture-catcher of a hollow stationary blade of steam turbine, air pump (1) is connected with electric heater (2), electric heater (2) is connected with plenum (5), plenum (5) is connected with hollow stationary blade (8), it is characterized in that, the back of the body arc of hollow stationary blade (8) has the inner arc that purges slit (11) or hollow stationary blade (8) and has the lagging edge that purges slit (15) or hollow stationary blade (8) and have and purge slit (17), at the top of hollow stationary blade (8) admission valve (13) is housed, the admission pipeline is connected with the hollow chamber of hollow stationary blade (8) (10), purging slit direction on inner arc and the back of the body arc is that the angle of slit center line and blade surface is 45 ° along the steam flow direction; Gap width is 1.0～1.5mm; The purging slit direction of lagging edge is that the angle of slit center line and blade surface is 90 ° along the steam flow direction; Gap width is 1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010106063A CN101769175A (en) | 2010-02-04 | 2010-02-04 | Dehumidifying device for hollow stationary blade of steam turbine through heating and blowing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010106063A CN101769175A (en) | 2010-02-04 | 2010-02-04 | Dehumidifying device for hollow stationary blade of steam turbine through heating and blowing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101769175A true CN101769175A (en) | 2010-07-07 |
Family
ID=42502250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010106063A Pending CN101769175A (en) | 2010-02-04 | 2010-02-04 | Dehumidifying device for hollow stationary blade of steam turbine through heating and blowing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101769175A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670532A (en) * | 2012-09-14 | 2014-03-26 | 株式会社日立制作所 | Steam turbine stationary blade and steam turbine |
| CN105324553A (en) * | 2013-07-30 | 2016-02-10 | 三菱日立电力系统株式会社 | Moisture removal device for steam turbine |
| CN108775263A (en) * | 2018-06-29 | 2018-11-09 | 东方电气集团东方汽轮机有限公司 | A kind of heating system and heating means of the anti-water erosion of static cascade |
| CN108798791A (en) * | 2018-06-29 | 2018-11-13 | 东方电气集团东方汽轮机有限公司 | A kind of fixed blade for steam turbine grid and its processing method |
| CN110318819A (en) * | 2019-06-06 | 2019-10-11 | 西安交通大学 | A kind of steam turbine, moisture film active sweeping type steam turbine stator blade and its purging control method |
| CN110318825A (en) * | 2019-06-21 | 2019-10-11 | 西安交通大学 | A kind of whole circle leaf grating heating and blowing dehumidifying experimental system of steam turbine and test method |
| US10690009B2 (en) | 2013-07-30 | 2020-06-23 | Mitsubishi Hitachi Power Systems, Ltd. | Water removal device for steam turbine and method for forming slit |
| CN112610285A (en) * | 2020-12-18 | 2021-04-06 | 武汉大学 | Hollow quiet leaf of imitative diamond cell topology's steam turbine strengthens dehumidification structure and steam turbine dehydrating unit |
| CN113574249A (en) * | 2019-05-31 | 2021-10-29 | 三菱动力株式会社 | Steam turbine blade, steam turbine and method for operating the same |
-
2010
- 2010-02-04 CN CN201010106063A patent/CN101769175A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 刘建成等: "汽轮机内部除湿技术的发展", 《热能动力工程》 * |
| 李春国等: "汽轮机空心静叶吹扫性能的试验研究和数值计算", 《动力工程》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670532B (en) * | 2012-09-14 | 2016-12-07 | 三菱日立电力系统株式会社 | Steam turbine stationary blade and steam turbine |
| US9598964B2 (en) | 2012-09-14 | 2017-03-21 | Mitsubishi Hitachi Power Systems, Ltd. | Steam turbine stationary blade and steam turbine |
| CN103670532A (en) * | 2012-09-14 | 2014-03-26 | 株式会社日立制作所 | Steam turbine stationary blade and steam turbine |
| US10690009B2 (en) | 2013-07-30 | 2020-06-23 | Mitsubishi Hitachi Power Systems, Ltd. | Water removal device for steam turbine and method for forming slit |
| CN105324553A (en) * | 2013-07-30 | 2016-02-10 | 三菱日立电力系统株式会社 | Moisture removal device for steam turbine |
| US10001032B2 (en) | 2013-07-30 | 2018-06-19 | Mitsubishi Hitachi Power Systems, Ltd. | Water removal device for steam turbine |
| CN108775263B (en) * | 2018-06-29 | 2020-10-09 | 东方电气集团东方汽轮机有限公司 | Heating system and heating method for preventing static blade grid from water erosion |
| CN108798791A (en) * | 2018-06-29 | 2018-11-13 | 东方电气集团东方汽轮机有限公司 | A kind of fixed blade for steam turbine grid and its processing method |
| CN108798791B (en) * | 2018-06-29 | 2020-08-21 | 东方电气集团东方汽轮机有限公司 | Steam turbine stationary blade grid and machining method thereof |
| CN108775263A (en) * | 2018-06-29 | 2018-11-09 | 东方电气集团东方汽轮机有限公司 | A kind of heating system and heating means of the anti-water erosion of static cascade |
| CN113574249A (en) * | 2019-05-31 | 2021-10-29 | 三菱动力株式会社 | Steam turbine blade, steam turbine and method for operating the same |
| CN110318819A (en) * | 2019-06-06 | 2019-10-11 | 西安交通大学 | A kind of steam turbine, moisture film active sweeping type steam turbine stator blade and its purging control method |
| CN110318819B (en) * | 2019-06-06 | 2020-07-28 | 西安交通大学 | Steam turbine, water film active purging type steam turbine stationary blade and purging control method thereof |
| CN110318825A (en) * | 2019-06-21 | 2019-10-11 | 西安交通大学 | A kind of whole circle leaf grating heating and blowing dehumidifying experimental system of steam turbine and test method |
| CN112610285A (en) * | 2020-12-18 | 2021-04-06 | 武汉大学 | Hollow quiet leaf of imitative diamond cell topology's steam turbine strengthens dehumidification structure and steam turbine dehydrating unit |
| CN112610285B (en) * | 2020-12-18 | 2021-09-14 | 武汉大学 | Hollow quiet leaf of imitative diamond cell topology's steam turbine strengthens dehumidification structure and steam turbine dehydrating unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101769175A (en) | Dehumidifying device for hollow stationary blade of steam turbine through heating and blowing | |
| KR101369101B1 (en) | Power generation apparatus | |
| CN101749961B (en) | Sintering product line saturated steam afterheat generating system | |
| JP2010156332A5 (en) | ||
| EP2375009B1 (en) | Steam turbine plant | |
| CN104533554B (en) | A kind of new and effective water supply heat back system for single reheat unit | |
| CN108087048A (en) | The method of operation of cogeneration of heat and power Turbo-generator Set | |
| CN207570262U (en) | A kind of middle alkali grid cloth drying unit | |
| CN106195995A (en) | A kind of heating power jet pump height adds steam-supplying system | |
| CN103334969A (en) | Condenser steam injection vacuum system | |
| WO2010136795A3 (en) | Heat recovery module | |
| JP2015090087A (en) | Steam turbine system | |
| CN203704603U (en) | Mechanical vapor recompression based drying device | |
| CN110318819A (en) | A kind of steam turbine, moisture film active sweeping type steam turbine stator blade and its purging control method | |
| CA2763072A1 (en) | Apparatus and method of converting a portion of the specific energy of a fluid in gas phase into mechanical work | |
| JP6304438B1 (en) | Hot air dryer and method for producing thin paper using the same | |
| JP2013245684A (en) | Steam rankine plant | |
| CN104088677B (en) | Steam reheater in a kind of machine of multistage impulse turbine | |
| US20150121871A1 (en) | Forced cooling in steam turbine plants | |
| JP6555369B2 (en) | Hot air dryer and method for producing thin paper using the same | |
| CN101923003A (en) | Hollow stationary blade slot moisture removal model experimental device for steam turbine | |
| CN206247818U (en) | A kind of steam turbine blowing-out ventilation anticorrosion equipment dries care device | |
| CN107166355A (en) | A kind of moist steam self-heating water scavenging system | |
| CN203498409U (en) | Cooling flue waste heat recovery device provided with three-way valve | |
| CN202942650U (en) | Circulating closed concentration tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100707 |