JP2006299818A - Windmill blade, horizontal axis windmill, surface pressure measuring device and surface pressure measuring method - Google Patents

Windmill blade, horizontal axis windmill, surface pressure measuring device and surface pressure measuring method Download PDF

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JP2006299818A
JP2006299818A JP2005118217A JP2005118217A JP2006299818A JP 2006299818 A JP2006299818 A JP 2006299818A JP 2005118217 A JP2005118217 A JP 2005118217A JP 2005118217 A JP2005118217 A JP 2005118217A JP 2006299818 A JP2006299818 A JP 2006299818A
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blade
metal plate
wind turbine
hole
pressure measuring
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Shigeo Yoshida
茂雄 吉田
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Subaru Corp
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Fuji Heavy Industries Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

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Abstract

<P>PROBLEM TO BE SOLVED: To prevent strength degradation of a blade in measuring surface pressure of the windmill blade and to facilitate maintenance of holes for pressure measurement. <P>SOLUTION: The blade for a horizontal axis windmill is divided into a plurality of divided blades along a longitudinal direction and a metal plate 13 of the same cross-sectional shape as a cross-sectional shape of the divided blades is interposed between the divided blades. A hollow portion 13b is formed inside the metal plate 13, the through holes 13c for pressure measurement are perforated through from a surface 13a to the hollow portion 13b of the metal plate 13 and an air pressure measuring device 20 is connected to each through hole 13c via a predetermined pipe 30. The pressure of air flowing into through each through hole 13c and each pipe 30 is measured by the air pressure measuring device 20. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、風車用ブレード、水平軸風車、翼面圧力計測装置及び翼面圧力計測方法に関する。   The present invention relates to a wind turbine blade, a horizontal axis wind turbine, a blade surface pressure measuring device, and a blade surface pressure measuring method.

水平軸風車の性能や水平軸風車に作用する荷重は、ブレードに作用する空気力(揚力や抗力)によって大部分が決定される。このため、近年においては、水平軸風車の性能を向上させる目的で、ブレード周りの流れ場(特に翼面圧力場)を解析する技術の開発が進められており、かかる解析結果に基づいてブレード翼型の開発・設計が行われている。   The performance of the horizontal axis wind turbine and the load acting on the horizontal axis wind turbine are largely determined by the aerodynamic forces (lift and drag) acting on the blades. For this reason, in recent years, in order to improve the performance of a horizontal axis wind turbine, development of technology for analyzing the flow field around the blade (especially the blade surface pressure field) has been advanced, and based on the analysis result, the blade blade The mold is being developed and designed.

従来は、前記したような水平軸風車のブレード周りの翼面圧力場解析を行うために、ブレード表面に圧力計測用の孔を穿設し、この孔に圧力トランスデューサを接続して、ブレードの翼面圧力を計測していた(例えば、非特許文献1参照。)。
Maeda et al.、“Unsteady Pressure Distribution on Rotating Blade of Mie University Open Air Rotor Research Facility”、1999 European Wind Energy Conference、1999年3月、p.121-124
Conventionally, in order to analyze the blade surface pressure field around the blade of the horizontal axis wind turbine as described above, a hole for pressure measurement is formed on the blade surface, and a pressure transducer is connected to the hole to connect the blade blade. The surface pressure was measured (for example, refer nonpatent literature 1).
Maeda et al., “Unsteady Pressure Distribution on Rotating Blade of Mie University Open Air Rotor Research Facility”, 1999 European Wind Energy Conference, March 1999, p.121-124

しかし、前記したような従来の圧力計測技術を採用すると、ブレード自体に圧力計測用の孔を穿設するため、ブレードの強度が低下するとともに、孔に塵芥等が詰まって機能しなくなった場合の修理がきわめて困難であった。また、ブレード自体に圧力計測用の孔を穿設するため、孔を多数穿設する作業や孔位置を正確に設定する作業が困難となるので、圧力計測点が限定されてしまい、結果的に翼面圧力場解析の精度に影響を与えることとなっていた。   However, when the conventional pressure measurement technology as described above is adopted, a pressure measurement hole is made in the blade itself, so that the strength of the blade is reduced and the hole becomes clogged with dust etc. Repair was extremely difficult. In addition, since holes for pressure measurement are drilled in the blade itself, it is difficult to drill a large number of holes and to accurately set the hole position, resulting in limited pressure measurement points. It would affect the accuracy of blade surface pressure field analysis.

また、従来の圧力計測技術を採用すると、圧力計測用の孔付近に圧力トランスデューサ等の各種機器を配置する必要があるので、これら機器の整備用の孔をブレード表面に別途設ける必要がある。従って、余分な労力を要することに加え、整備用の孔の穿設に起因してブレードの強度の低下がもたらされる。   In addition, when a conventional pressure measurement technique is employed, various devices such as a pressure transducer need to be disposed in the vicinity of the pressure measurement hole. Therefore, it is necessary to separately provide holes for maintenance of these devices on the blade surface. Therefore, in addition to requiring extra labor, the strength of the blade is reduced due to the drilling of the hole for maintenance.

本発明の課題は、風車用ブレードの翼面圧力を計測するにあたり、ブレードの強度低下を防止するとともに、圧力計測用の孔の整備をきわめて容易にすることである。   An object of the present invention is to prevent a decrease in strength of a blade and measure a pressure measurement hole very easily when measuring the blade surface pressure of a wind turbine blade.

以上の課題を解決するために、請求項1に記載の発明は、長さ方向に沿って少なくとも2つの分割翼に分割されるとともにこれら分割翼同士が連結部材で連結されてなる風車用ブレードであって、内部に空洞を有する金属板が前記分割翼間に介設され、この金属板の表面から前記空洞部へと貫通する圧力計測用の貫通孔が穿設されてなることを特徴とする。   In order to solve the above-described problems, the invention according to claim 1 is a blade for a wind turbine that is divided into at least two divided blades along the length direction, and the divided blades are connected to each other by a connecting member. A metal plate having a cavity inside is interposed between the divided blades, and a pressure measurement through-hole penetrating from the surface of the metal plate to the cavity is formed. .

請求項1に記載の発明によれば、風車用ブレードがその長さ方向に沿って少なくとも2つの分割翼に分割され、これら分割翼間に金属板が介設された状態で分割翼同士が連結部材で連結されている。そして、分割翼間に介設された金属板には、その表面から内部の空洞へと貫通する圧力計測用の貫通孔が穿設されている。   According to the first aspect of the present invention, the wind turbine blade is divided into at least two divided blades along the length direction, and the divided blades are connected to each other with a metal plate interposed between the divided blades. They are connected by members. And the through-hole for a pressure measurement penetrated from the surface to the internal cavity is drilled in the metal plate interposed between the divided blades.

従って、金属板に穿設された圧力計測用の貫通孔を介して風車用ブレードの翼面圧力を計測することができるので、ブレード自体に圧力計測用の貫通孔を穿設することなく翼面圧力の計測を実現させることができる。この結果、ブレードの強度低下を防止することができる。また、ブレードから金属板を取り外すことができるので、圧力計測用の貫通孔の整備をきわめて容易に行うことができる。   Accordingly, since the blade surface pressure of the wind turbine blade can be measured through the pressure measurement through hole formed in the metal plate, the blade surface can be formed without forming the pressure measurement through hole in the blade itself. Measurement of pressure can be realized. As a result, it is possible to prevent a reduction in the strength of the blade. Further, since the metal plate can be removed from the blade, the through hole for pressure measurement can be prepared very easily.

請求項2に記載の発明は、請求項1に記載の風車用ブレードにおいて、前記金属板は、前記分割翼の連結部分における断面形状の輪郭と同一の輪郭の断面形状を有し、前記分割翼に作用する荷重を担うことを特徴とする。   According to a second aspect of the present invention, in the wind turbine blade according to the first aspect, the metal plate has a cross-sectional shape having the same contour as a contour of a cross-sectional shape in a connecting portion of the split blade, and the split blade It bears the load which acts on.

請求項2に記載の発明によれば、金属板は、分割翼の連結部分における断面形状の輪郭と同一の輪郭の断面形状を有し、これら分割翼に作用する荷重(捩り荷重等)を担う「リブ」としても機能する。従って、ブレードの座屈を防止することができ、ブレードの強度低下防止に寄与することができる。   According to the invention described in claim 2, the metal plate has a cross-sectional shape having the same contour as the contour of the cross-sectional shape in the connecting portion of the divided blades, and bears a load (torsional load or the like) acting on these divided blades. Also functions as a “rib”. Accordingly, the buckling of the blade can be prevented, and it can contribute to the prevention of the strength reduction of the blade.

請求項3に記載の発明は、水平軸風車であって、請求項1又は2に記載の風車用ブレードを有することを特徴とする。   The invention described in claim 3 is a horizontal axis wind turbine, and includes the wind turbine blade according to claim 1 or 2.

請求項3に記載の発明によれば、請求項1又は2に記載の風車用ブレードを有する水平軸風車を提供することができる。   According to invention of Claim 3, the horizontal axis windmill which has the blade for windmills of Claim 1 or 2 can be provided.

請求項4に記載の発明は、翼面圧力計測装置であって、請求項1又は2に記載の風車用ブレードの前記金属板に穿設された前記貫通孔と、前記貫通孔に所定の配管を介して接続される空気圧計測装置と、を備えることを特徴とする。   Invention of Claim 4 is a wing surface pressure measuring apparatus, Comprising: The said through-hole drilled in the said metal plate of the blade for windmills of Claim 1 or 2, and predetermined piping to the said through-hole And an air pressure measuring device connected via the cable.

請求項5に記載の発明は、水平軸風車の風車用ブレードの翼面圧力を計測する方法であって、請求項1又は2に記載の風車用ブレードを水平軸風車に取り付けるブレード取付工程と、前記風車用ブレードの前記金属板に穿設された前記貫通孔に所定の配管を介して空気圧計測装置を接続する計測装置接続工程と、前記貫通孔及び前記配管を経て流入した空気の圧力を前記空気圧計測装置で計測する空気圧計測工程と、を備えることを特徴とする。   The invention according to claim 5 is a method for measuring the blade surface pressure of a wind turbine blade of a horizontal axis wind turbine, wherein the blade mounting step of attaching the wind turbine blade according to claim 1 or 2 to the horizontal axis wind turbine, A measuring device connecting step of connecting an air pressure measuring device to the through hole formed in the metal plate of the windmill blade via a predetermined pipe; and the pressure of the air flowing in through the through hole and the pipe And an air pressure measuring step for measuring with an air pressure measuring device.

請求項4又は5に記載の発明によれば、風車用ブレードの金属板に穿設された圧力計測用の貫通孔に配管を介して空気圧計測装置を接続し、貫通孔及び配管を経て流入した空気の圧力を空気圧計測装置で計測することができる。従って、ブレード自体に圧力計測用の孔を穿設することなく翼面圧力の計測を実現させることができるので、ブレードの強度の低下を防止することができる。また、金属板の貫通孔に塵芥等が詰まって機能しなくなった場合においても、ブレードから金属板を取り外して容易に修理を行うことができる。   According to the invention described in claim 4 or 5, the air pressure measuring device is connected to the through hole for pressure measurement drilled in the metal plate of the blade for wind turbine through the pipe, and flows in through the through hole and the pipe. The air pressure can be measured with an air pressure measuring device. Therefore, the blade surface pressure can be measured without drilling a pressure measurement hole in the blade itself, so that a reduction in the strength of the blade can be prevented. Further, even when dust or the like is clogged in the through hole of the metal plate, the metal plate can be removed from the blade and repaired easily.

また、請求項4又は5に記載の発明によれば、圧力計測用の孔を穿設するため穿設作業が容易となるので、多数の孔を設けてブレードの同一断面における圧力の計測点数を増大させることができるとともに、孔の位置を精緻に設定することが可能となる。従って、翼面圧力場解析の精度を向上させることができる。また、金属板付近に空気圧計測装置を配置することができるため、ブレード分割時にこの装置の整備を同時に行うことができ、空気圧計測装置整備用の孔をブレードに別途設ける必要がなくなる。従って、この点からもブレードの強度低下防止が可能となる。   Further, according to the invention described in claim 4 or 5, since the hole for pressure measurement is drilled, the drilling work is facilitated. Therefore, a large number of holes are provided to reduce the number of pressure measurement points in the same cross section of the blade. While being able to increase, it becomes possible to set the position of a hole precisely. Therefore, the accuracy of the blade surface pressure field analysis can be improved. Further, since the air pressure measuring device can be arranged near the metal plate, the device can be maintained at the same time when the blade is divided, and there is no need to separately provide a hole for maintaining the air pressure measuring device. Therefore, also from this point, it is possible to prevent the strength of the blade from being lowered.

本発明によれば、圧力計測用の貫通孔が穿設された金属板を分割翼間に介設し、これら分割翼同士を連結して風車用ブレードを構成するので、金属板に穿設された圧力計測用の貫通孔を介して風車用ブレードの翼面圧力を計測することができる。この結果、ブレード自体に圧力計測用の貫通孔を穿設することなく翼面圧力の計測を実現させることができるので、ブレードの強度低下を防止することができる。また、ブレードから金属板を取り外すことができるので、圧力計測用の貫通孔の整備をきわめて容易に行うことができる。   According to the present invention, the metal plate having the pressure measurement through-holes is interposed between the divided blades, and the divided blades are connected to form the blade for the wind turbine. The blade surface pressure of the wind turbine blade can be measured through the pressure measurement through hole. As a result, the blade surface pressure can be measured without making a pressure measurement through-hole in the blade itself, so that a reduction in the strength of the blade can be prevented. Further, since the metal plate can be removed from the blade, the through hole for pressure measurement can be prepared very easily.

以下、本発明の実施の形態を、図を用いて詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

まず、図1を用いて、本実施の形態に係る水平軸風車1の構成について説明する。水平軸風車1は、図1に示すように、所定の地点に設置されるタワー2、タワー2の頂部に取り付けられたナセル3、ナセル3に略水平方向に延在して軸支された図示されていない主軸、この主軸に回転自在に取り付けられるロータ4、等を備えて構成されている。ロータ4は、図1に示すように、ブレード10を2枚備えている。   First, the configuration of the horizontal axis wind turbine 1 according to the present embodiment will be described with reference to FIG. As shown in FIG. 1, the horizontal axis wind turbine 1 includes a tower 2 installed at a predetermined point, a nacelle 3 attached to the top of the tower 2, and an axially extending and pivotally supported by the nacelle 3. The main shaft is not provided, the rotor 4 is rotatably attached to the main shaft, and the like. As shown in FIG. 1, the rotor 4 includes two blades 10.

次に、図1〜図3を用いて、本実施の形態に係るブレード10(風車用ブレード)の構成について説明する。   Next, the configuration of the blade 10 (wind turbine blade) according to the present embodiment will be described with reference to FIGS.

ブレード10は、図1及び図2に示すように、長さ方向中央部において翼根側の内翼11と翼端側の外翼12とに分割される分割構造を有している。これら内翼11及び外翼12は、それぞれ本発明における分割翼であり、図示されていない連結部材である、分割翼に固定されたバレルナット及び各分割翼のバレルナットに各一端を螺合したテンションボルトによって連結されている。   As shown in FIGS. 1 and 2, the blade 10 has a divided structure that is divided into an inner wing 11 on the blade root side and an outer wing 12 on the blade tip side at the center in the length direction. Each of the inner wing 11 and the outer wing 12 is a divided wing in the present invention, and one end is screwed into a barrel nut fixed to the divided wing and a barrel nut of each divided wing, which is a connecting member (not shown). Connected by tension bolts.

ブレード10の内翼11と外翼12との間には、図2に示すように、金属板(ステンレス板)13が介設されている。金属板13の表面13aは、内翼11の表面及び外翼12の表面とともにブレード10の表面を形成する。すなわち、図3(a)に示すように金属板13は内翼11及び外翼12に連続する翼形の断面を有する。金属板13と内翼11の互いに接合する端面の輪郭は同一形状である。金属板13と外翼12の互いに接合する端面の輪郭も同一形状である。金属板13の内部には空洞部13bが形成されている。この空洞部13bは、内翼11、外翼12にそれぞれ接合する金属板13の両端面に開口し、該両端面の間に連続して形成されている。   As shown in FIG. 2, a metal plate (stainless steel plate) 13 is interposed between the inner wing 11 and the outer wing 12 of the blade 10. The surface 13 a of the metal plate 13 forms the surface of the blade 10 together with the surface of the inner wing 11 and the surface of the outer wing 12. That is, as shown in FIG. 3A, the metal plate 13 has an airfoil cross section that is continuous with the inner wing 11 and the outer wing 12. The contours of the end surfaces of the metal plate 13 and the inner wing 11 that are joined to each other have the same shape. The contours of the end surfaces of the metal plate 13 and the outer wing 12 that are joined to each other are also the same shape. A hollow portion 13 b is formed inside the metal plate 13. The hollow portion 13b opens at both end faces of the metal plate 13 joined to the inner wing 11 and the outer wing 12, and is formed continuously between the both end faces.

また、金属板13には、図3に示すように、表面13aから空洞部13bへと貫通する圧力計測用の貫通孔13cが複数穿設されており、各貫通孔13cには図示されていないステンレスチューブが圧入されている。かかる貫通孔13cは、後述する翼面圧力の計測に用いられる。また、金属板13の空洞部13bには、内翼11と外翼12とを連結するテンションボルトを挿通させている。   Further, as shown in FIG. 3, the metal plate 13 is provided with a plurality of pressure measurement through holes 13c penetrating from the surface 13a to the cavity 13b, and is not shown in each through hole 13c. Stainless steel tube is press-fitted. The through hole 13c is used for measuring the blade surface pressure described later. In addition, a tension bolt that connects the inner wing 11 and the outer wing 12 is inserted into the hollow portion 13 b of the metal plate 13.

続いて、水平軸風車1のブレード10の翼面圧力を計測する方法について説明する。   Next, a method for measuring the blade surface pressure of the blade 10 of the horizontal axis wind turbine 1 will be described.

まず、前記したブレード10を水平軸風車1に取り付ける(ブレード取付工程)。そして、図3(a)に示すように、ブレード10の金属板13に穿設された圧力計測用の貫通孔13cに、可撓性チューブ30を介して圧力トランスデューサ20を接続する(計測装置接続工程)。圧力トランスデューサ20は、金属板13の各貫通孔13c及び可撓性チューブ30を経て流入した空気の圧力を電気信号に変換するものであり、本発明における空気圧計測装置である。本実施の形態においては、金属板13の空洞部13bに圧力トランスデューサ20を配置している。また、可撓性チューブ30は、本発明における配管であり、金属板13の各貫通孔13cに圧入されたステンレスチューブに連通接続されている。   First, the above-described blade 10 is attached to the horizontal axis wind turbine 1 (blade attaching step). Then, as shown in FIG. 3A, the pressure transducer 20 is connected via a flexible tube 30 to the pressure measurement through-hole 13c formed in the metal plate 13 of the blade 10 (connection of the measurement device). Process). The pressure transducer 20 converts the pressure of the air that has flowed in through the through-holes 13c of the metal plate 13 and the flexible tube 30 into an electrical signal, and is a pneumatic measuring device in the present invention. In the present embodiment, the pressure transducer 20 is disposed in the cavity 13 b of the metal plate 13. The flexible tube 30 is a pipe in the present invention, and is connected to a stainless steel tube press-fitted into each through hole 13 c of the metal plate 13.

次いで、圧力トランスデューサ20を、図2に示した信号線40をスリップリングの端子につなぎ、スリップリングを介してブレード10外部の解析装置に接続した後、水平軸風車1のロータ4を回転させる。そして、ブレード10の金属板13に穿設された圧力計測用の貫通孔13cから流入し可撓性チューブ30を経由して圧力トランスデューサ20に到達した空気の圧力を、圧力トランスデューサ20で電気信号に変換し、信号線40を介して解析装置に伝送する(空気圧計測工程)。以上の工程により、ブレード10の翼面圧力が計測されることとなる。   Next, after connecting the signal line 40 shown in FIG. 2 to the terminal of the slip ring and connecting the pressure transducer 20 to the analysis device outside the blade 10 via the slip ring, the rotor 4 of the horizontal axis wind turbine 1 is rotated. The pressure of the air flowing into the pressure measurement through hole 13c formed in the metal plate 13 of the blade 10 and reaching the pressure transducer 20 via the flexible tube 30 is converted into an electric signal by the pressure transducer 20. The signal is converted and transmitted to the analyzer via the signal line 40 (pneumatic measurement process). Through the above steps, the blade surface pressure of the blade 10 is measured.

以上説明した実施の形態に係る水平軸風車1においては、ブレード10がその長さ方向に沿って少なくとも2つの分割翼(内翼11及び外翼12)に分割され、これら分割翼間に金属板13が介設された状態で分割翼同士が連結部材で連結されている。そして、分割翼間に介設された金属板13には、その表面13aから空洞部13bへと貫通する圧力計測用の貫通孔13cが穿設されている。   In the horizontal axis wind turbine 1 according to the embodiment described above, the blade 10 is divided into at least two divided blades (the inner blade 11 and the outer blade 12) along the length direction, and a metal plate is interposed between these divided blades. In a state where 13 is interposed, the divided blades are connected by a connecting member. The metal plate 13 interposed between the divided blades has a through hole 13c for pressure measurement that penetrates from the surface 13a to the cavity 13b.

従って、金属板13に穿設された圧力計測用の貫通孔13cを介してブレード10の翼面圧力を計測することができるので、ブレード10の内翼11や外翼12に圧力計測用の貫通孔を穿設することなく翼面圧力の計測することができる。この結果、ブレード10の強度の低下を防止することができる。また、ブレード10から金属板13を取り外すことができるので、圧力計測用の貫通孔の整備をきわめて容易に行うことができる。   Accordingly, since the blade surface pressure of the blade 10 can be measured through the pressure measurement through hole 13 c formed in the metal plate 13, the pressure measurement penetrating the inner wing 11 and the outer wing 12 of the blade 10. The blade surface pressure can be measured without drilling a hole. As a result, a reduction in the strength of the blade 10 can be prevented. Further, since the metal plate 13 can be removed from the blade 10, the through hole for pressure measurement can be maintained very easily.

また、以上説明した実施の形態に係る翼面圧力計測方法においては、ブレード10の金属板13に穿設された圧力計測用の貫通孔13cに可撓性チューブ30を介して圧力トランスデューサ20を接続し、貫通孔13c及び可撓性チューブ30を経て流入した空気の圧力を圧力トランスデューサ20で計測する。ブレード10自体に圧力計測用の孔を穿設することなく翼面圧力の計測するので、ブレード10の強度の低下を防止することができる。また、金属板13の貫通孔13cに塵芥等が詰まって機能しなくなった場合においても、ブレード10から金属板13を取り外して容易に修理を行うことができる。   In the blade surface pressure measuring method according to the embodiment described above, the pressure transducer 20 is connected to the pressure measuring through hole 13 c formed in the metal plate 13 of the blade 10 via the flexible tube 30. Then, the pressure transducer 20 measures the pressure of the air that has flowed in through the through hole 13 c and the flexible tube 30. Since the blade surface pressure is measured without making a pressure measurement hole in the blade 10 itself, the strength of the blade 10 can be prevented from being lowered. Even when the through hole 13c of the metal plate 13 is clogged with dust or the like, the metal plate 13 can be removed from the blade 10 for easy repair.

また、以上説明した実施の形態に係る翼面圧力計測方法においては、圧力計測用の孔を穿設するため穿設作業が容易となるので、多数の孔を設けてブレード10の同一断面における圧力の計測点数を増大させることができるとともに、孔の位置を精緻に設定することが可能となる。従って、翼面圧力場解析の精度を向上させることができる。また、金属板13付近に圧力トランスデューサ20を配置することができるため、ブレード10の分割時に圧力トランスデューサ20の整備を同時に行うことができ、圧力トランスデューサ20の整備用の孔をブレード10に別途設ける必要がなくなる。従って、この点からもブレード10の強度低下防止が可能となる。   Further, in the blade surface pressure measuring method according to the embodiment described above, since a hole for pressure measurement is drilled, the drilling operation is facilitated. The number of measurement points can be increased, and the position of the hole can be set precisely. Therefore, the accuracy of the blade surface pressure field analysis can be improved. Further, since the pressure transducer 20 can be disposed in the vicinity of the metal plate 13, the pressure transducer 20 can be serviced simultaneously when the blade 10 is divided, and a maintenance hole for the pressure transducer 20 needs to be separately provided in the blade 10. Disappears. Therefore, the strength reduction of the blade 10 can be prevented also from this point.

なお、以上の実施の形態においては、水平軸風車1のブレード10を「2つ」の分割翼(内翼11及び外翼12)で構成した例を示したが、「3つ」以上の分割翼でブレードを構成し、各分割翼間に計測用の貫通孔を設けた金属板を介設して計測個所を増加することも容易にできる。   In the above embodiment, an example in which the blade 10 of the horizontal axis wind turbine 1 is configured with “two” split blades (the inner blade 11 and the outer blade 12) has been described. It is also possible to easily increase the number of measurement points by composing a blade with blades and interposing a metal plate with a measurement through hole between each divided blade.

また、以上の実施の形態においては、空気圧計測装置として「圧力トランスデューサ」を採用した例を示したが、金属板に穿設された圧力計測用の貫通孔から流入した空気の圧力を計測することが可能な他の空気圧計測装置を採用することもできる。   Moreover, in the above embodiment, the example which employ | adopted the "pressure transducer" as an air pressure measuring device was shown, However, The pressure of the air which flowed in from the through-hole for pressure measurement drilled in the metal plate is measured. It is also possible to adopt other air pressure measuring devices that can be used.

また、以上の実施の形態においては、ブレードに設けられる金属板として「ステンレス板」を採用しているが、アルミニウム等の他の金属で構成された金属板を採用することもできる。   In the above embodiment, a “stainless steel plate” is used as the metal plate provided on the blade, but a metal plate made of another metal such as aluminum may be used.

また、以上の実施の形態においては、ブレードの分割部端面の断面形状と同一の外形断面形状を有する金属板とした。断面の最外線で描かれる断面形状、すなわち断面の輪郭を同一にすればよく、金属板の内部の形状は必ずしもブレードの分割部端面の内部の形状と同一でなくてもよい。また、例えば、金属板の外形を変更せずに空洞部の面積を小さくして、金属板の剛性・強度を高めることもできる。   Moreover, in the above embodiment, it was set as the metal plate which has the same external cross-sectional shape as the cross-sectional shape of the division part end surface of a braid | blade. The cross-sectional shape drawn by the outermost line of the cross-section, that is, the outline of the cross-section may be the same, and the internal shape of the metal plate does not necessarily have to be the same as the internal shape of the end face of the divided portion of the blade. In addition, for example, the area of the hollow portion can be reduced without changing the outer shape of the metal plate, and the rigidity and strength of the metal plate can be increased.

また、以上の実施の形態においては、金属板の空洞部の例として、金属板の両端面間を貫通する貫通型を採用したが、必ずしも貫通型を採用しなくてもよい。例えば、金属板の何れか一方の端面の略中央部に形成した「凹部」を空洞部とする非貫通型を採用することもできる。このような「凹部」を空洞部として採用すると、金属板の剛性・強度を高めることができる。また、「凹部」を空洞部として採用した場合においても以上の実施の形態と同様に圧力計測用の貫通孔を穿設することができ、空洞部(凹部)に圧力トランスデューサを嵌め込むことができる。   Moreover, in the above embodiment, the penetration type penetrating between both end faces of the metal plate is adopted as an example of the hollow portion of the metal plate, but the penetration type is not necessarily adopted. For example, a non-penetrating type in which a “concave portion” formed in a substantially central portion of one end face of the metal plate is a hollow portion may be employed. When such a “concave portion” is employed as the hollow portion, the rigidity and strength of the metal plate can be increased. Further, even when the “recess” is adopted as the cavity, a pressure measurement through hole can be formed as in the above embodiment, and the pressure transducer can be fitted into the cavity (recess). .

本発明の実施の形態に係る水平軸風車の構成を説明するための説明図である。It is explanatory drawing for demonstrating the structure of the horizontal axis windmill which concerns on embodiment of this invention. 図1に示した水平軸風車のブレードの斜視図である。It is a perspective view of the blade of the horizontal axis windmill shown in FIG. (a)は図2に示したブレードに設けられた金属板のIIIA−IIIA部分における拡大断面図、(b)は図2に示したブレードに設けられた金属板の表面の拡大図である。(A) is an expanded sectional view in the IIIA-IIIA part of the metal plate provided in the blade shown in FIG. 2, (b) is an enlarged view of the surface of the metal plate provided in the blade shown in FIG.

符号の説明Explanation of symbols

1 水平軸風車
10 ブレード
11 内翼(分割翼)
12 外翼(分割翼)
13 金属板
13a 表面(金属板)
13b 空洞部
13c 圧力計測用の貫通孔
20 圧力トランスデューサ(空気圧計測装置)
30 可撓性チューブ(配管)
1 Horizontal axis windmill 10 Blade 11 Inner wing (split wing)
12 Outer wings (split wings)
13 Metal plate 13a Surface (metal plate)
13b Cavity 13c Pressure measurement through hole 20 Pressure transducer (pneumatic measurement device)
30 Flexible tube (piping)

Claims (5)

長さ方向に沿って少なくとも2つの分割翼に分割されるとともにこれら分割翼同士が連結部材で連結されてなる風車用ブレードであって、
内部に空洞を有する金属板が前記分割翼間に介設され、この金属板の表面から前記空洞部へと貫通する圧力計測用の貫通孔が穿設されてなることを特徴とする風車用ブレード。
A blade for a wind turbine, which is divided into at least two divided blades along the length direction, and these divided blades are connected by a connecting member,
A blade for wind turbines, characterized in that a metal plate having a cavity is interposed between the divided blades, and a through hole for pressure measurement penetrating from the surface of the metal plate to the cavity is formed. .
前記金属板は、
前記分割翼の連結部分における断面形状の輪郭と同一の輪郭の断面形状を有し、前記分割翼に作用する荷重を担うことを特徴とする請求項1に記載の風車用ブレード。
The metal plate is
The blade for a wind turbine according to claim 1, wherein the blade has a cross-sectional shape having the same contour as a contour of a cross-sectional shape at a connecting portion of the split blades and bears a load acting on the split blades.
請求項1又は2に記載の風車用ブレードを有することを特徴とする水平軸風車。   A horizontal axis wind turbine comprising the wind turbine blade according to claim 1. 請求項1又は2に記載の風車用ブレードの前記金属板に穿設された前記貫通孔と、
前記貫通孔に所定の配管を介して接続される空気圧計測装置と、
を備えることを特徴とする翼面圧力計測装置。
The through hole formed in the metal plate of the wind turbine blade according to claim 1 or 2,
An air pressure measuring device connected to the through-hole via a predetermined pipe;
A blade surface pressure measuring apparatus comprising:
水平軸風車の風車用ブレードの翼面圧力を計測する方法であって、
請求項1又は2に記載の風車用ブレードを水平軸風車に取り付けるブレード取付工程と、
前記風車用ブレードの前記金属板に穿設された前記貫通孔に所定の配管を介して空気圧計測装置を接続する計測装置接続工程と、
前記貫通孔及び前記配管を経て流入した空気の圧力を前記空気圧計測装置で計測する空気圧計測工程と、
を備えることを特徴とする翼面圧力計測方法。
A method for measuring blade surface pressure of a wind turbine blade of a horizontal axis wind turbine,
A blade attaching step of attaching the wind turbine blade according to claim 1 or 2 to a horizontal axis wind turbine;
A measuring device connecting step of connecting an air pressure measuring device to the through hole formed in the metal plate of the windmill blade via a predetermined pipe;
An air pressure measuring step of measuring the pressure of air flowing in through the through hole and the pipe with the air pressure measuring device;
A blade surface pressure measuring method comprising:
JP2005118217A 2005-04-15 2005-04-15 Windmill blade, horizontal axis windmill, surface pressure measuring device and surface pressure measuring method Pending JP2006299818A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010054257A (en) * 2008-08-27 2010-03-11 Mitsuba Corp Pressure measuring device, pressure measuring method, and program for executing the same
WO2009109467A3 (en) * 2008-03-07 2010-09-10 Vestas Wind Systems A/S A control system and a method for redundant control of a wind turbine
GB2484148A (en) * 2010-10-02 2012-04-04 Duncan James Parfitt Windmill with apertured flexible vanes
CN105508150A (en) * 2015-12-23 2016-04-20 上海理工大学 Wind turbine blade based on fractal theory design
CN106640719A (en) * 2016-11-15 2017-05-10 上海电气电站设备有限公司 Testing device and method for flow of multistage axial-flow fan of turbine generator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009109467A3 (en) * 2008-03-07 2010-09-10 Vestas Wind Systems A/S A control system and a method for redundant control of a wind turbine
CN101970866A (en) * 2008-03-07 2011-02-09 维斯塔斯风力系统有限公司 A control system and a method for redundant control of a wind turbine
US8736092B2 (en) 2008-03-07 2014-05-27 Vestas Wind Systems A/S Control system and a method for redundant control of a wind turbine
JP2010054257A (en) * 2008-08-27 2010-03-11 Mitsuba Corp Pressure measuring device, pressure measuring method, and program for executing the same
GB2484148A (en) * 2010-10-02 2012-04-04 Duncan James Parfitt Windmill with apertured flexible vanes
CN105508150A (en) * 2015-12-23 2016-04-20 上海理工大学 Wind turbine blade based on fractal theory design
CN105508150B (en) * 2015-12-23 2018-04-03 上海理工大学 A kind of pneumatic equipment bladess based on Fractals design
CN106640719A (en) * 2016-11-15 2017-05-10 上海电气电站设备有限公司 Testing device and method for flow of multistage axial-flow fan of turbine generator

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