JPS61142399A - Method of preventing adhesion of dust to static blade - Google Patents
Method of preventing adhesion of dust to static bladeInfo
- Publication number
- JPS61142399A JPS61142399A JP26274684A JP26274684A JPS61142399A JP S61142399 A JPS61142399 A JP S61142399A JP 26274684 A JP26274684 A JP 26274684A JP 26274684 A JP26274684 A JP 26274684A JP S61142399 A JPS61142399 A JP S61142399A
- Authority
- JP
- Japan
- Prior art keywords
- dust
- fluid
- blade
- front edge
- edge part
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、付着性を有するダストを含むガスを取扱う軸
流ファンの静翼へダストが付着するのを防止する方法に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method for preventing dust from adhering to stator blades of an axial flow fan that handles gas containing adhesive dust.
付着性を有するダストを含むガスを取扱う軸流ファンに
おいては、その静翼の表面にダストが付着して性能低下
を招く問題があり、特にダストの付着は、Ｒの前縁部表
面や腹部表面で多くなる。In axial fans that handle gas containing adhesive dust, there is a problem in which dust adheres to the surface of the stator blades, leading to a decrease in performance. It becomes more.
ところで、ガスタービンにおいては、取扱うガスが高温
であるため、動翼および静翼に、空気吹き出し用の孔を
多数設け、その番孔から空気を吹き出すことにより、こ
れら翼の冷却を行う方法が採られている。しかし、この
方法は、あくまでも翼の冷却を主目的としたものであり
、ダストの付着については翼の後縁部のみに着目してい
るだけで、前述した軸流ファンにおける静翼の前縁部や
腹部へのダストの付着防止については何ら認識していな
い。By the way, in a gas turbine, since the gas handled is high temperature, a method is adopted in which the rotor blades and stationary blades are provided with many air blowing holes and air is blown out from the holes to cool these blades. It is being However, this method is mainly aimed at cooling the blades, and only focuses on the trailing edge of the blade for dust adhesion. I am not aware of any measures to prevent dust from adhering to the body or abdomen.
本発明の目的は、付着性を有するダストを含むガスを取
扱う軸流ファンにおいて、その静翼の前轍部、腹部を含
む翼表面にダストが付着するのを防止できる静翼へのダ
スト付着防止方法を提供することにある。The purpose of the present invention is to prevent dust from adhering to stator blades in an axial flow fan that handles gas containing adhesive dust, which can prevent dust from adhering to the vane surface including the front rut and abdomen of the stator blade. The purpose is to provide a method.
この目的を達成するために、本発明は、静翼の前縁部か
ら空気、水等の流体を吹き出すことにより、静翼の少な
くとも前縁部表面および腹部表面に前記流体による被膜
を形成して、取扱うガス中に含まれるダストと翼表面と
が直接接触しないようにしたものである。In order to achieve this object, the present invention blows out a fluid such as air or water from the leading edge of the stator blade to form a coating of the fluid on at least the leading edge surface and the abdomen surface of the stator blade. , to prevent direct contact between the dust contained in the gas being handled and the blade surface.
以下、本発明の一実施例を第１図、第２図に従って説明
する。第１図は本発明によるダスト付着防止方法を実施
した軸流ファンの静翼の正面図で、静翼前縁部を断面し
て示している。第２図は第１図の■−■線断面図である
。図において、１は付着性を有するダストを含むガスの
流路、２はファンケース３に取付けられてガス流路ｌ中
に配置される静翼を示している。前記静翼２の前縁部内
には、該前縁部の両側表面にそれぞれ開口する複数の孔
４Ａおよび前縁部先端表面に開口する複数の孔４Ｂと、
これらの孔４Ａ、４Ｂを連通させた１本の流路５とが設
けられている。前記の番孔４Ａ。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a front view of a stator blade of an axial flow fan in which the method for preventing dust adhesion according to the present invention is implemented, and shows a front edge of the stator blade in cross section. FIG. 2 is a sectional view taken along the line ■--■ in FIG. In the figure, reference numeral 1 indicates a flow path for gas containing adhesive dust, and reference numeral 2 indicates a stationary blade that is attached to a fan case 3 and arranged in the gas flow path l. In the leading edge of the stationary blade 2, there are a plurality of holes 4A opening on both sides of the leading edge, and a plurality of holes 4B opening on the tip surface of the leading edge.
A single channel 5 is provided in which these holes 4A and 4B communicate with each other. Said hole 4A.
４Ｂは、静翼２の高さ方向において適宜間隔をもって配
列されている。また、前記流路５の一方は。4B are arranged at appropriate intervals in the height direction of the stationary blade 2. Also, one of the flow paths 5 is.
空気、水等の流体の供給管６に接続具７を介して接続さ
れ、かつ他方は閉塞されている。尚、図中矢印イはガス
の流れ方向を示す。It is connected to a supply pipe 6 for fluid such as air or water via a connector 7, and the other end is closed. Note that arrow A in the figure indicates the direction of gas flow.
次に本発明によるダスト付着防止方法の作用について説
明する。Next, the operation of the method for preventing dust adhesion according to the present invention will be explained.
供給管６から流路５内へ流体を送り込むと、該流体は番
孔４Ａ、４Ｂから静翼２の前縁部外へ吹き出されるが、
番孔４Ａ、４Ｂから吹き出された流体は、第２図に示す
如く、静翼２の部分を流れるガスの圧力によって破線の
矢印のように静翼２の表面に沿って流れていく、つまり
、静翼２の少なくとも前縁部表面および腹部表面に前記
流体による被膜が形成される。従って、静翼２の前縁部
表面および腹部表面とガス中に含まれるダストとが、前
記被膜の存在により直接接触しなくなるので、静翼２の
前縁部および腹部へのダストの付着が防止される。When fluid is sent into the flow path 5 from the supply pipe 6, the fluid is blown out from the leading edge of the stationary blade 2 through the holes 4A and 4B.
As shown in FIG. 2, the fluid blown out from the holes 4A and 4B flows along the surface of the stator blade 2 in the direction of the dashed arrow due to the pressure of the gas flowing through the stator blade 2. A film of the fluid is formed on at least the leading edge surface and the abdominal surface of the stationary blade 2. Therefore, the dust contained in the gas does not come into direct contact with the leading edge surface and abdomen surface of the stator vane 2 due to the presence of the coating, thereby preventing dust from adhering to the leading edge and abdomen surface of the stator blade 2. be done.
また１本発明においては、前記流体の吹き出し孔に替え
て、第３図に示すように、静翼２の前縁部に多数のスリ
ット８を設け、このスリット８から流体を吹き出すよう
にしてもよい。Furthermore, in the present invention, instead of the fluid blow-off holes, as shown in FIG. good.
さらに、本発明においては、第４図および第５図に示す
ように、静翼２の前縁部を別部材で形成し、その前縁部
９を静翼２から若干離して配置すると共に、該前縁部９
内に、流体の流路５と、その流路５内の流体を静翼２の
先端部へ向けて吹き出させる複数の孔１０とを設けても
よい。Furthermore, in the present invention, as shown in FIGS. 4 and 5, the leading edge of the stator vane 2 is formed from a separate member, and the leading edge 9 is placed slightly apart from the stator blade 2. The leading edge 9
A fluid flow path 5 and a plurality of holes 10 for blowing out the fluid in the flow path 5 toward the tip of the stationary blade 2 may be provided therein.
以上説明したように、本発明によれば、付着性を有する
ダストを含む軸流ファンにおいて、その静翼の前縁部、
腹部を含む翼表面にダストが付着するのを防止できる。As explained above, according to the present invention, in an axial fan containing adhesive dust, the leading edge of the stator blade,
Dust can be prevented from adhering to the wing surface including the abdomen.
第１図、第２図は本発明の一実施例を示し、第１図は本
発明によるダスト付着防止方法を実施した軸流ファンの
静翼の正面図で、静翼前縁部を断面して示す。第２図は
第１図の■−■線断面図。
９５３図および第４図、第５図は本発明の他の実施例を
示したもので、第３回は静翼の正面図、第４図は一部断
面して示す静翼の正面図、第５図は第４図のＶ−Ｖ線断
面図である。
１・・・ガス流路、２・・・静翼、４Ａ、４Ｂ・・・孔
、５・・・流路、６・・・流体の供給管、８・・・スリ
ット、９・・・静茅２０
り1 and 2 show an embodiment of the present invention, and FIG. 1 is a front view of a stator blade of an axial flow fan in which the method for preventing dust adhesion according to the present invention is implemented, with the leading edge of the stator blade cut away. Shown. FIG. 2 is a sectional view taken along the line ■-■ in FIG. Figure 953, Figures 4 and 5 show other embodiments of the present invention, the third is a front view of the stator blade, and Figure 4 is a front view of the stator blade partially cut away. FIG. 5 is a sectional view taken along the line V-V in FIG. 4. DESCRIPTION OF SYMBOLS 1... Gas flow path, 2... Stationary blade, 4A, 4B... Hole, 5... Channel, 6... Fluid supply pipe, 8... Slit, 9... Stationary 20 pieces of grass
Claims (1)
おいて、その静翼の前縁部内に、該前縁部の表面に開口
する複数の孔またはスリットと、これら孔またはスリッ
トと連通し、かつ外部から空気、水等の流体が送り込ま
れる流路とを設け、前記流路内へ送られる流体を前記孔
またはスリットより吹き出すことにより、静翼の少なく
とも前縁部表面および腹部表面に前記流体による被膜を
形成して、ガス中に含まれるダストと静翼の表面とが直
接接触しないようにしたことを特徴とする静翼へのダス
ト付着防止方法。In an axial flow fan that handles gas containing adhesive dust, a plurality of holes or slits that open on the surface of the leading edge are provided in the leading edge of the stator blade, and a plurality of holes or slits that communicate with the outside By providing a flow path through which a fluid such as air or water is sent from the flow path, and blowing out the fluid sent into the flow path through the hole or slit, a coating of the fluid is formed on at least the front edge surface and the abdomen surface of the stationary blade. A method for preventing dust from adhering to a stator blade, characterized in that the dust contained in the gas does not come into direct contact with the surface of the stator blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26274684A JPS61142399A (en) | 1984-12-14 | 1984-12-14 | Method of preventing adhesion of dust to static blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26274684A JPS61142399A (en) | 1984-12-14 | 1984-12-14 | Method of preventing adhesion of dust to static blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61142399A true JPS61142399A (en) | 1986-06-30 |
Family
ID=17380008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26274684A Pending JPS61142399A (en) | 1984-12-14 | 1984-12-14 | Method of preventing adhesion of dust to static blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61142399A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5577889A (en) * | 1994-04-14 | 1996-11-26 | Mitsubishi Jukogyo Kabushiki Kaisha | Gas turbine cooling blade |
| ES2197760A1 (en) * | 2001-07-06 | 2004-01-01 | Aspiraciones Perca S L | System of automatic cleaning of the helix of the centrifugal vacuum cleaners, by means of a water jet. (Machine-translation by Google Translate, not legally binding) |
| CN105020986A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Thermal pump type tail heat recycling reverse flowing penetrating fluidized drying machine |
| CN105020984A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Hot-air drying machine capable of utilizing waste heat and achieving penetrating countercurrent fluidization |
| CN105020985A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Heat pump type tail heat utilization penetrating reverse flow fluidized drying machine |
| CN105066087A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Tail heat recovery type dust retention preventing oil burning boiler |
| CN105066643A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Heat pump type tail heat recovery counterflow drying machine |
| CN105066653A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Heat pump type tail heat recovery and penetrating counterflow fluidized drying machine |
| CN105115279A (en) * | 2015-08-14 | 2015-12-02 | 吉首大学 | Heat-pump type exhaust heat utilization penetration counter-flow fluidized drying machine |
-
1984
- 1984-12-14 JP JP26274684A patent/JPS61142399A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5577889A (en) * | 1994-04-14 | 1996-11-26 | Mitsubishi Jukogyo Kabushiki Kaisha | Gas turbine cooling blade |
| ES2197760A1 (en) * | 2001-07-06 | 2004-01-01 | Aspiraciones Perca S L | System of automatic cleaning of the helix of the centrifugal vacuum cleaners, by means of a water jet. (Machine-translation by Google Translate, not legally binding) |
| CN105020986A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Thermal pump type tail heat recycling reverse flowing penetrating fluidized drying machine |
| CN105020984A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Hot-air drying machine capable of utilizing waste heat and achieving penetrating countercurrent fluidization |
| CN105020985A (en) * | 2015-08-14 | 2015-11-04 | 吉首大学 | Heat pump type tail heat utilization penetrating reverse flow fluidized drying machine |
| CN105066087A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Tail heat recovery type dust retention preventing oil burning boiler |
| CN105066643A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Heat pump type tail heat recovery counterflow drying machine |
| CN105066653A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Heat pump type tail heat recovery and penetrating counterflow fluidized drying machine |
| CN105115279A (en) * | 2015-08-14 | 2015-12-02 | 吉首大学 | Heat-pump type exhaust heat utilization penetration counter-flow fluidized drying machine |
| CN105066087B (en) * | 2015-08-14 | 2018-01-12 | 衢州大通锅炉有限责任公司 | A kind of anti-laying dust oil burning boiler of tail heat reclamation type |
| CN105020985B (en) * | 2015-08-14 | 2018-02-09 | 吉首大学 | Heat-pump-type tail heat utilization penetrates adverse current fluidized dryer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4094010B2 (en) | Fan-shaped trailing edge teardrop array | |
| US7997868B1 (en) | Film cooling hole for turbine airfoil | |
| US4616976A (en) | Cooled vane or blade for a gas turbine engine | |
| US4105364A (en) | Vane for a gas turbine engine having means for impingement cooling thereof | |
| KR100569765B1 (en) | Turbine blade | |
| US6129515A (en) | Turbine airfoil suction aided film cooling means | |
| US4604031A (en) | Hollow fluid cooled turbine blades | |
| EP2126287B1 (en) | Eccentric chamfer at inlet of branches in a flow channel | |
| US5378108A (en) | Cooled turbine blade | |
| JPS58172407A (en) | Axial-flow turbine blade for gas turbine mechanism | |
| US20060073015A1 (en) | Gas turbine airfoil film cooling hole | |
| JP2007218257A (en) | Turbine blade, turbine rotor assembly, and airfoil of turbine blade | |
| JPH0353442B2 (en) | ||
| KR900013185A (en) | Cooling Turbine Wings of Multistage Gas Turbine | |
| US3111302A (en) | Blades for fluid flow machines | |
| JPS61142399A (en) | Method of preventing adhesion of dust to static blade | |
| KR910010084B1 (en) | Turbine airfoil structure | |
| GB2127105A (en) | Improvements in cooled gas turbine engine aerofoils | |
| JPH10141286A (en) | Axial fan | |
| KR100612175B1 (en) | Trailing edge cooling apparatus for a gas turbine airfoil | |
| JP2020507707A (en) | Turbine blades or vanes for gas turbines | |
| JPS6032903A (en) | Blade of gas turbine | |
| US6824352B1 (en) | Vane enhanced trailing edge cooling design | |
| KR100234467B1 (en) | Blade of gas turbine | |
| JPH0742842B2 (en) | Gas turbine blades |