JP4901786B2 - Gas turbine intake filter mounting device - Google Patents

Gas turbine intake filter mounting device Download PDF

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JP4901786B2
JP4901786B2 JP2008055922A JP2008055922A JP4901786B2 JP 4901786 B2 JP4901786 B2 JP 4901786B2 JP 2008055922 A JP2008055922 A JP 2008055922A JP 2008055922 A JP2008055922 A JP 2008055922A JP 4901786 B2 JP4901786 B2 JP 4901786B2
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intake
gas turbine
intake filter
filter
hole
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JP2009209869A (en
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正樹 西田
洋平 宮本
敏文 中原
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Chugoku Electric Power Co Inc
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Chugoku Electric Power Co Inc
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本発明は、ガスタービンプラントの吸気設備に係り、特に吸気室に設けられた支持構造に、吸気フィルタを固定するガスタービン吸気フィルタ取付け装置に関する。   The present invention relates to an intake facility of a gas turbine plant, and more particularly to a gas turbine intake filter mounting device that fixes an intake filter to a support structure provided in an intake chamber.

火力発電設備の一つであるガスタービンプラントは、その機能上、大量の空気を必要とする。すなわち、ガスタービンプラントは、ガスタービンの回転に伴い圧縮空気を燃焼器に送り込むための空気圧縮機を備えている。空気中には不純物(塵埃等)が多く含まれている。不純物が含まれたままの空気を空気圧縮機に供給すると、空気圧縮機のタービン羽根車に塵埃等が付着し、圧縮機の性能を低下させてしまう。このような理由から、一般に、ガスタービンプラントは、清浄な空気を空気圧縮機に供給するために、吸気フィルタの配備された吸気設備が必要である。   A gas turbine plant which is one of thermal power generation facilities requires a large amount of air for its function. In other words, the gas turbine plant includes an air compressor for sending compressed air to the combustor as the gas turbine rotates. The air contains a lot of impurities (dust etc.). When air containing impurities is supplied to the air compressor, dust or the like adheres to the turbine impeller of the air compressor, thereby reducing the performance of the compressor. For this reason, gas turbine plants generally require an intake facility with an intake filter in order to supply clean air to the air compressor.

上記吸気設備においては、吸気室に設けられた支持構造に、複数の吸気フィルタがそれぞれ取付けられている。吸気フィルタは、四辺形状の外枠(フィルタケース)に、各種のろ材を積層したり折り畳んだりしてなるフィルタパックを収容して構成された箱型のフィルタである。   In the intake equipment, a plurality of intake filters are respectively attached to a support structure provided in the intake chamber. The intake filter is a box-type filter configured to accommodate a filter pack formed by laminating or folding various filter media in a quadrilateral outer frame (filter case).

吸気室の支持構造としては、複数の吸気フィルタがそれぞれ取付けられるための、格子状の枠組体を有する多段多列の取付け枠が用いられる。取付け枠は、吸気フィルタの外枠を支持するガイド部材を備えると共に、吸気フィルタの外枠を押さえ付ける押さえ板を配した取付けボルトを備える(例えば、特許文献1参照)。   As the support structure of the intake chamber, a multi-stage multi-row attachment frame having a lattice-like frame assembly for attaching a plurality of intake filters is used. The mounting frame includes a guide member that supports the outer frame of the intake filter, and includes a mounting bolt provided with a pressing plate that presses the outer frame of the intake filter (see, for example, Patent Document 1).

取付けボルトは、一端が取付け枠に固定され、他端が隣り合う2個の吸気フィルタの間から突出するように設置されている。押さえ板は、取付けボルトの他端側に設けられる。押さえ板は、その中心穴に取付けボルトを貫通させる長方形(短冊状)の金属片である。押さえ板は、その長手方向を略水平に保ちつつ、取付けボルト先端からのナットの締め付けによって、隣り合う2個の吸気フィルタの外枠を同時に押さえ付ける。
特開2007−46588号公報
The mounting bolt is installed such that one end is fixed to the mounting frame and the other end protrudes between two adjacent intake filters. The pressing plate is provided on the other end side of the mounting bolt. The holding plate is a rectangular (strip-shaped) metal piece that allows a mounting bolt to pass through its center hole. The holding plate simultaneously presses the outer frames of the two adjacent intake filters by tightening the nut from the tip of the mounting bolt while keeping the longitudinal direction substantially horizontal.
JP 2007-46588 A

上述のように吸気フィルタは、格子状の枠組体を有する多段多列の取付け枠において複数段(数百個/段)取付けられている。吸気フィルタは、その圧力損失により規定された交換時期には数百個以上まとめて交換する。このため、吸気フィルタの取外し及び取付け作業に対する作業効率を少しでも向上させたい。   As described above, the intake filter is mounted in a plurality of stages (several hundreds / stage) in a multi-stage multi-row mounting frame having a grid-like frame assembly. Several hundred or more intake filters are replaced together at the time of replacement specified by the pressure loss. For this reason, it is desirable to improve the work efficiency for removing and attaching the intake filter as much as possible.

例えば、1個の吸気フィルタは、押さえ板によりそれぞれ4箇所が押さえ付けられる。押さえ板は、吸気フィルタを押さえ、取付けボルトで締め付けられている状態から、ナットを緩めても、その長手方向が水平方向から大きくは傾かない。すなわち、押さえ板は通常、重心にほぼ一致してボルトの貫通穴を有し貫通穴を中心として左右のバランスがとられているため、長手方向が水平方向から鉛直方向寄りに大きく傾くことはない。   For example, one intake filter is pressed at four locations by a pressing plate. Even if the nut is loosened from the state in which the holding plate holds the intake filter and is tightened by the mounting bolt, the longitudinal direction of the holding plate does not greatly tilt from the horizontal direction. In other words, the holding plate usually has a through hole for a bolt that substantially coincides with the center of gravity and is balanced on the left and right with the through hole as the center, so that the longitudinal direction does not tilt significantly from the horizontal direction to the vertical direction. .

しかしながら、押さえ板は、その長手方向を略鉛直に強制的に向かせることによって隣り合う吸気フィルタの間の領域内に納まる状態となり、ようやく、吸気フィルタは、押さえ板に妨げられることなく取外しができるようになる。吸気フィルタを取外した後も、押さえ板は、振動等によって、その長手方向が水平方向に戻ろうとして斜めに傾くものが少なくない。従って、吸気フィルタの取付け作業時にも、その長手方向を再び略鉛直に強制的に向かせる手間がかかる。   However, the pressure plate is in a state where it is placed in a region between adjacent intake filters by forcing its longitudinal direction to be substantially vertical, and finally the intake filter can be removed without being obstructed by the pressure plate. It becomes like this. Even after the intake filter is removed, there are many cases where the pressure plate is inclined obliquely so that its longitudinal direction returns to the horizontal direction due to vibration or the like. Therefore, it takes time and effort to force the longitudinal direction of the intake filter to be substantially vertical again.

本発明は以上のような事情に鑑みてなされたものであり、簡便な構成により、吸気フィルタの取外し、取付け作業の効率化が図れるガスタービン吸気フィルタ取付け装置を提供することを目的とする。   The present invention has been made in view of the circumstances as described above, and an object of the present invention is to provide a gas turbine intake filter attachment device capable of removing an intake filter and improving the efficiency of attachment work with a simple configuration.

本発明者らは、従来、重心にほぼ一致してボルトの貫通穴を有していた吸気フィルタの押さえ板について、意図的に重心を外した位置にボルトの貫通穴を設け、この貫通穴を中心としてアンバランスな構造とすることを発想した。つまり、アンバランスな懸架点を取ることで自然状態では重い方が常に鉛直下方に位置することを利用し、以下のような構成を提供する。   The inventors of the present invention have provided a through hole for a bolt at a position where the center of gravity is intentionally removed from a holding plate of an intake filter that conventionally has a through hole for a bolt that substantially coincides with the center of gravity. The idea was to create an unbalanced structure as the center. In other words, by taking the unbalanced suspension point, the following configuration is provided by utilizing the fact that the heavier one is always positioned vertically downward in the natural state.

(1) ガスタービンに清浄な空気を供給するための吸気設備内に設けられ、フィルタケースにフィルタパックが収容されてなる箱型の吸気フィルタが所定数配置可能なガイド部材付きの格子状の枠組体と、
前記枠組体から垂直に延びる、一端が前記枠組体に固定され、他端が取付けられるべき隣り合う吸気フィルタの間から突出するように設置されたボルト部材と、
前記ボルト部材に組み合わされる締結部材と、
重心から外れた貫通穴を有した金属部材であって、前記貫通穴に前記ボルト部材が貫通し、略水平にした長手方向の両端側近傍が前記隣り合う吸気フィルタの縁部それぞれに接触した状態で前記締結部材の締め付けが達成され、前記締結部材の締め付けを緩めた状態では自動的に前記長手方向が略鉛直に向き、前記ボルト部材の延びる方向に対向した平面において前記隣り合う吸気フィルタの間の領域内に納まる状態となる前記吸気フィルタの押さえ板と、
を具備したことを特徴とするガスタービン吸気フィルタ取付け装置。
(1) A grid-like frame with a guide member provided in an intake system for supplying clean air to a gas turbine and capable of arranging a predetermined number of box-type intake filters each having a filter pack housed in a filter case Body,
A bolt member extending vertically from the frame assembly, one end fixed to the frame assembly and the other end installed so as to protrude from between adjacent intake filters to be attached;
A fastening member combined with the bolt member;
A metal member having a through hole deviating from the center of gravity, wherein the bolt member passes through the through hole, and the vicinity of both ends in the longitudinal direction which are substantially horizontal are in contact with the edges of the adjacent intake filters. In the state where the fastening member is tightened and the fastening member is loosened, the longitudinal direction is automatically oriented substantially vertically, and between the adjacent intake filters in a plane opposed to the extending direction of the bolt member. A holding plate of the intake filter that is in a state of being in the region
A gas turbine intake filter mounting device comprising:

(2) 前記押さえ板は、前記長手方向において前記貫通穴から左右が不均一な形状となっていることを特徴とする(1)に記載のガスタービン吸気フィルタ取付け装置。   (2) The gas turbine intake filter mounting device according to (1), wherein the pressing plate has a non-uniform shape from the through hole in the longitudinal direction.

(3) 前記押さえ板は、前記長手方向において前記貫通穴から左右のいずれか一方が他方に比べて重くなるような部材が付加されていることを特徴とする(1)または(2)に記載のガスタービン吸気フィルタ取付け装置。   (3) The pressing plate is provided with a member added such that one of the left and right sides from the through hole is heavier than the other in the longitudinal direction, according to (1) or (2). Gas turbine intake filter mounting device.

(4) 前記締結部材は、ダブルナット構造を有することを特徴とする(1)から(3)いずれかに記載のガスタービン吸気フィルタ取付け装置。   (4) The gas turbine intake filter mounting device according to any one of (1) to (3), wherein the fastening member has a double nut structure.

本発明によれば、吸気フィルタを押さえ付ける押さえ板に関し、重心から外れた貫通穴を有するように構成した。押さえ板は、貫通穴にボルト部材を通し、長手方向を略水平にし、締結部材の締め付けにより隣り合う吸気フィルタを同時に押さえ付ける。締結部材を緩めると、押さえ板は、アンバランスな構造のため、ボルト部材を中心として、自重により1/4回転し、重い方の側が鉛直下方に位置して安定する。この押さえ板の態様は、ボルト部材の延びる方向に対向した平面において隣り合う吸気フィルタの間の領域内に納まる状態となる。従って、押さえ板は、締結部材の締め付け開放後、作業者の操作なしに自動的に、吸気フィルタの取外し(または取付け)の妨げにならない向きに変化し、その態様が維持される。これにより、数百個もの吸気フィルタの取外し、取付け作業に対し、効率化が図れるガスタービン吸気フィルタ取付け装置を提供することができる。   According to the present invention, the pressing plate for pressing the intake filter is configured to have a through hole that is out of the center of gravity. The holding plate passes the bolt member through the through hole, makes the longitudinal direction substantially horizontal, and simultaneously presses the adjacent intake filters by tightening the fastening member. When the fastening member is loosened, the holding plate is rotated by a quarter by its own weight around the bolt member due to the unbalanced structure, and the heavy side is positioned vertically downward and is stable. This form of the pressing plate is in a state of being accommodated in a region between adjacent intake filters on a plane opposed to the extending direction of the bolt member. Therefore, after the fastening member is tightened and released, the presser plate automatically changes to an orientation that does not hinder the removal (or attachment) of the intake filter without the operator's operation, and the mode is maintained. As a result, it is possible to provide a gas turbine intake filter attachment device that can improve the efficiency of removing and attaching hundreds of intake filters.

図1、図2は、本発明に係るガスタービン吸気フィルタ取付け装置の概観を示す正面図、上面図である。ガスタービンの吸気フィルタは、ガスタービンに清浄な空気を供給するための吸気設備内に設けられる。図示の吸気フィルタ10は、フィルタケース101にフィルタパック102が収容された、例えば、面積が600mm×600mm、高さが300mm、重さが10〜15kgの箱型のフィルタである。吸気フィルタ10は、本発明に係るガスタービン吸気フィルタ取付け装置100に、所定数個配置され、取り付けられる。   1 and 2 are a front view and a top view showing an overview of a gas turbine intake filter mounting device according to the present invention. The intake filter for the gas turbine is provided in an intake facility for supplying clean air to the gas turbine. The illustrated intake filter 10 is a box-type filter in which a filter pack 102 is accommodated in a filter case 101, for example, an area of 600 mm × 600 mm, a height of 300 mm, and a weight of 10 to 15 kg. A predetermined number of intake filters 10 are arranged and attached to the gas turbine intake filter mounting apparatus 100 according to the present invention.

ガスタービン吸気フィルタ取付け装置100は、枠組体20、ボルト部材30、締結部材40、および、押さえ板51を備える。枠組体20は、所定数個の吸気フィルタ10それぞれが配置される取付け枠の集合体といえる。枠組体20には、枠組体20に対して垂直に延びるL字形または逆L字形のガイド部材201が設けられている。ガイド部材201は、吸気フィルタ10それぞれを対応する取付け枠に導き入れ吸気フィルタ10の自重を支持する。   The gas turbine intake filter attachment device 100 includes a frame assembly 20, a bolt member 30, a fastening member 40, and a pressing plate 51. The frame assembly 20 can be said to be an assembly of mounting frames in which a predetermined number of intake filters 10 are arranged. The frame assembly 20 is provided with an L-shaped or inverted L-shaped guide member 201 extending perpendicularly to the frame assembly 20. The guide member 201 guides each intake filter 10 to the corresponding mounting frame and supports the weight of the intake filter 10.

ボルト部材30は、枠組体20から垂直に延びるように配されたスタッドボルトで構成される。ボルト部材30は、その一端が枠組体20に固定され、他端が取付けられるべき隣り合う吸気フィルタ10と10の間から突出するように設置されている。また、ボルト部材30に組み合わされる締結部材40が設けられている。締結部材40は、例えばナット401、402でなるダブルナット構造である(図2参照)。   The bolt member 30 is constituted by a stud bolt arranged so as to extend vertically from the frame assembly 20. The bolt member 30 is installed so that one end thereof is fixed to the frame assembly 20 and the other end protrudes from between adjacent intake filters 10 and 10 to be attached. A fastening member 40 to be combined with the bolt member 30 is provided. The fastening member 40 has, for example, a double nut structure including nuts 401 and 402 (see FIG. 2).

押さえ板51は、重心から外れた貫通穴511を有した金属部材でなる。貫通穴511の径は、ボルト部材30の径に比べて十分大きく、かつ締結部材40の外径より十分小さいことが重要である。つまり、押さえ板51は、貫通穴511にボルト部材30を通した状態でボルト部材30を中心として回転動作可能であり、かつ、締結部材40の締め付けにも十分対応可能になっていればよい。   The holding plate 51 is made of a metal member having a through hole 511 that is off the center of gravity. It is important that the diameter of the through hole 511 is sufficiently larger than the diameter of the bolt member 30 and sufficiently smaller than the outer diameter of the fastening member 40. That is, the pressing plate 51 only needs to be able to rotate around the bolt member 30 in a state where the bolt member 30 is passed through the through hole 511 and to be able to sufficiently cope with tightening of the fastening member 40.

押さえ板51は、その長手方向において、貫通穴511から左右が不均一な形状となっている。より具体的には、図2に示すように、長手方向において貫通穴511中心からの左右の長さが異なり、L2<L1となっている。このような押さえ板51は、貫通穴511にボルト部材30が貫通し、略水平にした長手方向の両端側近傍が隣り合う吸気フィルタ10と10のそれぞれの縁部に接触した状態で締結部材40の締め付けが達成される。すなわち、押さえ板51において、L2が吸気フィルタ10の一方を押さえるための必要十分な長さであるとすれば、L1は、L2の1.5倍程度の長さを有する。これにより、隣り合う吸気フィルタ10と10を同時に押さえ付ける。実際には、図示のように、1個の吸気フィルタ10は、4つの押さえ板51によりそれぞれ4箇所が押さえ付けられる(図1のH1参照)。   The holding plate 51 has a non-uniform shape in the longitudinal direction from the through hole 511 on the left and right. More specifically, as shown in FIG. 2, the left and right lengths from the center of the through hole 511 are different in the longitudinal direction, and L2 <L1. In such a holding plate 51, the bolt member 30 passes through the through hole 511, and the fastening member 40 is in a state where the vicinity of both ends in the longitudinal direction which are substantially horizontal are in contact with the respective edge portions of the adjacent intake filters 10 and 10. Tightening is achieved. In other words, if L2 has a necessary and sufficient length for holding one side of the intake filter 10 in the holding plate 51, L1 has a length of about 1.5 times L2. Thereby, the adjacent intake filters 10 and 10 are pressed simultaneously. Actually, as shown in the drawing, one intake filter 10 is pressed at four locations by four pressing plates 51 (see H1 in FIG. 1).

押さえ板51は、締結部材40で吸気フィルタ10を押さえ付けていない開放状態では、L2<L1のアンバランスな構造(不均一な形状)のため、自重により長手方向が略鉛直に向く。すなわち、締め付けていた締結部材40を緩めると、押さえ板51は、ボルト部材30を中心として自重で1/4回転し、重い方の側が鉛直下方に位置して安定するこのときの押さえ板51は、ボルト部材30の延びる方向に対向した平面において隣り合う吸気フィルタ10と10の間の領域内に納まる状態となっている(図1のH2参照)。   In the open state where the suction filter 10 is not pressed by the fastening member 40, the pressing plate 51 has an unbalanced structure (non-uniform shape) of L2 <L1, and therefore the longitudinal direction is substantially vertical due to its own weight. That is, when the fastening member 40 that has been tightened is loosened, the presser plate 51 rotates by a quarter of its own weight around the bolt member 30, and the presser plate 51 at this time is stabilized with the heavy side positioned vertically downward. In the plane opposite to the direction in which the bolt member 30 extends, it is in a state of being within a region between the adjacent intake filters 10 and 10 (see H2 in FIG. 1).

このように、押さえ板51は、締結部材の締め付け開放後、作業者の操作なしに、吸気フィルタの取外し(または取付け)の妨げにならない向きに自動的に変化し、その態様が維持される。これにより、数百個もの吸気フィルタの取外し、取付け作業に対し、効率化が図れるガスタービン吸気フィルタ取付け装置を提供することができる。   In this way, after the fastening member 51 is tightened and released, the pressing plate 51 is automatically changed to an orientation that does not hinder the removal (or attachment) of the intake filter without the operator's operation, and the mode is maintained. As a result, it is possible to provide a gas turbine intake filter attachment device that can improve the efficiency of removing and attaching hundreds of intake filters.

なお、押さえ板51は、貫通穴511のように、重心から外れた貫通穴を有すればよく、その形状は様々考えられる。例えば、押さえ板51の(L2−L1)の長さ分の金属を、従来部品に後から接着または溶接によって付け加えることによって押さえ板51を構成してもよい。また、締結部材40は、ダブルナット構造としたが、シングルナットでもよい。しかし、押さえ板51が重心から外れた貫通穴511を有する関係上、締結部材40の締め付けにより、押さえ板51が吸気フィルタ10を押さえ付けている状態のときに締結部材40に緩みが生じると、その長手方向が鉛直下方に傾き易いので、締結が緩み難いダブルナット構造とした方が安全性に優れるといえる。   In addition, the press plate 51 should just have the through-hole remove | deviated from the gravity center like the through-hole 511, and the shape can be considered variously. For example, the pressing plate 51 may be configured by adding a metal corresponding to the length of (L2-L1) of the pressing plate 51 to a conventional component later by adhesion or welding. The fastening member 40 has a double nut structure, but may be a single nut. However, because the presser plate 51 has a through hole 511 that is off the center of gravity, when the fastening member 40 is tightened, the fastening member 40 is loosened when the presser plate 51 is pressing the intake filter 10. Since the longitudinal direction is easy to incline vertically downward, it can be said that it is more safe to use a double nut structure in which fastening is difficult to loosen.

図3は、本発明に係るガスタービン吸気フィルタ取付け装置に用いられる押さえ板の第1変形例を示す斜視図である。押さえ板52は、長手方向において貫通穴521中心からの左右の長さが同じでもよい。つまり、従来品に対し加工することが考えられる。図示のように、貫通穴521から左右のいずれか一方が他方に比べて重くなるような金属部材523が付加されている。この金属部材523は、押さえ板52に接着や溶接を利用して後付けされている。このように押さえ板52を加工して用いても、上述と同様の効果が期待できる。   FIG. 3 is a perspective view showing a first modification of the pressing plate used in the gas turbine intake filter mounting device according to the present invention. The holding plate 52 may have the same left and right lengths from the center of the through hole 521 in the longitudinal direction. That is, it is conceivable to process the conventional product. As illustrated, a metal member 523 is added from the through hole 521 so that one of the left and right is heavier than the other. The metal member 523 is retrofitted to the pressing plate 52 using adhesion or welding. Even if the presser plate 52 is processed and used in this way, the same effect as described above can be expected.

図4は、本発明に係るガスタービン吸気フィルタ取付け装置に用いられる押さえ板の第2変形例を示す斜視図である。押さえ板52は、長手方向において貫通穴521中心からの左右の長さが同じでもよい。つまり、従来品に対し加工することが考えられる。図示のように、貫通穴521から左右のいずれか一方が他方に比べて重くなるようなボス材524が付加されている。このボス材524は、押さえ板52の所定部に締結穴(図示せず)を加工して後付けされている。このように押さえ板52を加工して用いても、上述と同様の効果が期待できる。   FIG. 4 is a perspective view showing a second modification of the pressing plate used in the gas turbine intake filter mounting device according to the present invention. The holding plate 52 may have the same left and right lengths from the center of the through hole 521 in the longitudinal direction. That is, it is conceivable to process the conventional product. As shown in the drawing, a boss material 524 is added so that either one of the left and right sides is heavier than the other through the through hole 521. The boss material 524 is retrofitted by processing a fastening hole (not shown) in a predetermined portion of the pressing plate 52. Even if the presser plate 52 is processed and used in this way, the same effect as described above can be expected.

図5は、本発明に係るガスタービン吸気フィルタ取付け装置に用いられる押さえ板の第3変形例の概観を示し、(a)は平面図、(b)は斜視図、および(c)は製造過程の一場面を示す平面図である。押さえ板53は、長手方向において貫通穴531中心からの左右の長さが同じでもよい。図示のように、貫通穴531から左右のいずれか一方が他方に比べて面積が大きく、しかも、面積が大きい分の領域532が折り曲げられている((b)参照)。(a)に示す平面図では、領域532が折り曲げられているため、貫通穴531中心から平面的にみて左右面積の違いが概観に響かない。(c)に示すように、押さえ板53の製造過程では対(ペア)の金属形状が連続するようにカットされて同じものを製作するので金属加工に無駄がない。押さえ板53は、領域532を折り曲げずに、(c)に示すようなカットした形のまま利用することも考えられる。このような押さえ板53を用いても、上述と同様の効果が期待できる。   FIG. 5 shows an overview of a third modified example of the pressing plate used in the gas turbine intake filter mounting device according to the present invention, (a) is a plan view, (b) is a perspective view, and (c) is a manufacturing process. It is a top view which shows one scene. The holding plate 53 may have the same left and right lengths from the center of the through hole 531 in the longitudinal direction. As shown in the drawing, either one of the left and right sides from the through hole 531 has a larger area than the other, and the area 532 corresponding to the larger area is bent (see (b)). In the plan view shown in (a), since the region 532 is bent, the difference in the left and right areas does not affect the overview when viewed in plan from the center of the through hole 531. As shown in (c), in the manufacturing process of the pressing plate 53, the same metal is manufactured by cutting the pair of metal shapes so that there is no waste in metal processing. It is also conceivable that the pressing plate 53 is used in a cut shape as shown in (c) without bending the region 532. Even if such a pressing plate 53 is used, the same effect as described above can be expected.

なお、上記した第1変形例から第3変形例の形状においては、いずれも、次のような利点がある。図4を例に説明する。長手方向が鉛直方向に向いて安定している押さえ板52に対し、吸気フィルタを取付け、押さえ板で押さえ付ける際、長手方向を略水平にする必要がある。このとき、ボス材524のような突出形状があると、作業者は指で操作し易くなる。図3に示す金属部材523の突出形状や、図5に示す折り曲げた領域532の突出形状も同様に利用できる。   Note that the shapes of the first to third modifications described above have the following advantages. An example will be described with reference to FIG. When the intake filter is attached to the holding plate 52 whose longitudinal direction is stable in the vertical direction and pressed by the holding plate, the longitudinal direction needs to be substantially horizontal. At this time, if there is a protruding shape like the boss material 524, the operator can easily operate with a finger. The protruding shape of the metal member 523 shown in FIG. 3 and the protruding shape of the bent region 532 shown in FIG. 5 can be similarly used.

図6は、上記本発明に係るガスタービン吸気フィルタ取付け装置100が配設される発電プラントの一例を示すブロック図である。図は、コンバインド発電プラントを示している。コンバインド発電は、ガスタービンと蒸気タービンを組み合わせた(コンバインド)発電設備である。燃料であるLNG(液化天然ガス)を燃やしてガスタービンを回転させ、その際に発生する排熱でボイラ水を沸騰させ、その蒸気でさらに蒸気タービンを回転させて発電する方式である。コンバインド発電プラントは、高効率で、電力需要に対する調整能力に優れるという特徴を有している。   FIG. 6 is a block diagram showing an example of a power plant in which the gas turbine intake filter mounting device 100 according to the present invention is arranged. The figure shows a combined power plant. Combined power generation is a combined power generation facility that combines a gas turbine and a steam turbine. In this system, LNG (liquefied natural gas) as fuel is burned to rotate a gas turbine, boiler water is boiled by exhaust heat generated at that time, and steam is further rotated by the steam to generate electricity. A combined power plant is characterized by high efficiency and excellent ability to adjust power demand.

図6において、発電設備600では、燃料のガス(LNG)が燃焼器601に送り込まれ、ガスタービン602を回転させる。その際、空気圧縮機603は、ガスタービン602の回転に伴い、圧縮空気を燃焼器に送り込む。この空気圧縮機603に供給される空気は、吸気設備604において清浄化される。すなわち、本発明に係るガスタービン吸気フィルタ取付け装置100は、この吸気設備604に配設され、複数の吸気フィルタの作用により空気圧縮機603の性能を低下させないよう清浄化された空気を送出する。ガスタービン602からの排気は脱硝装置605を経て煙突607から排出される一方、排熱は排熱回収ボイラ606にて蒸気を発生させる。排熱回収ボイラ606からの蒸気は、蒸気タービン608に送り込まれる。復水器609は、蒸気タービンを通過した蒸気を冷却・液化する。復水器609では、図示しない各種ポンプ、取水路を介して冷却水としての海水が取り込まれ、熱交換後、海に放出される。復水は、排熱回収ボイラ606にて再び蒸気発生に利用される。ガスタービン602、蒸気タービン608の回転により、発電機610が発電し、電力が得られる。   In FIG. 6, in the power generation facility 600, fuel gas (LNG) is sent into the combustor 601 to rotate the gas turbine 602. At that time, the air compressor 603 sends compressed air to the combustor as the gas turbine 602 rotates. The air supplied to the air compressor 603 is purified by the intake equipment 604. That is, the gas turbine intake filter mounting device 100 according to the present invention is disposed in the intake facility 604 and sends out purified air so as not to deteriorate the performance of the air compressor 603 due to the action of a plurality of intake filters. Exhaust gas from the gas turbine 602 is exhausted from the chimney 607 via the denitration device 605, while exhaust heat generates steam in the exhaust heat recovery boiler 606. Steam from the exhaust heat recovery boiler 606 is sent to the steam turbine 608. The condenser 609 cools and liquefies the steam that has passed through the steam turbine. In the condenser 609, seawater as cooling water is taken in through various pumps and intake channels (not shown), and is discharged to the sea after heat exchange. The condensate is used again for steam generation in the exhaust heat recovery boiler 606. By the rotation of the gas turbine 602 and the steam turbine 608, the generator 610 generates electric power, and electric power is obtained.

図7は、図6の吸気設備604に配設される図1と同様のガスタービン吸気フィルタ取付け装置100を示す概観図である。図1と同様の箇所には同一の符号を付して説明は省略する。吸気フィルタ10を取外した枠組体(取付け枠)20の奥には、他の段の吸気フィルタ11が配置されている。この吸気フィルタ11は、吸気フィルタ10より本来のフィルタ性能が優れているもの、あるいは劣っているものであってもよい。このように、ガスタービン吸気フィルタは、枠組体(20)に応じて複数段(数百個/段)取付けられ、吸気室に配備されるのである。なお、吸気フィルタ(10)が隣り合わない枠組体(20)の一番端の押さえ板50は、ボルト部材30を隔てて、押さえる必要の無い側の領域が極端に短くなっている。この押さえ板50においても押さえ板51と同様に、締結部材40の締め付け開放後、作業者の操作なしに自動的に吸気フィルタの取外しの妨げにならない向きに変化し、態様が維持される。   FIG. 7 is a schematic view showing a gas turbine intake filter mounting device 100 similar to FIG. 1 disposed in the intake equipment 604 of FIG. The same parts as those in FIG. In the back of the frame assembly (mounting frame) 20 from which the intake filter 10 has been removed, an intake filter 11 at another stage is arranged. The intake filter 11 may have a filter performance that is superior or inferior to the intake filter 10. As described above, the gas turbine intake filter is mounted in a plurality of stages (several hundred pieces / stage) according to the frame assembly (20), and is disposed in the intake chamber. It should be noted that the pressing plate 50 at the end of the frame assembly (20) where the intake filter (10) is not adjacent to each other has an extremely short region on the side that does not need to be pressed across the bolt member 30. Similarly to the presser plate 51, the presser plate 50 is automatically changed to a direction that does not hinder the removal of the intake air filter without the operator's operation after the fastening member 40 is tightened and released, and the mode is maintained.

なお、コンバインド発電プラントとしては、ガスタービン、蒸気タービンにそれぞれ別個にロータ(回転子)及び発電機が配備されている設備もあるが、この図6では、ロータが1本となっている発電設備として説明した。いずれの発電設備にしても、また、コンバインド発電プラント以外の発電設備であっても、本発明に係るガスタービン吸気フィルタ取付け装置(100)は配備可能である。   In addition, as a combined power generation plant, there is a facility in which a rotor (rotor) and a generator are separately provided for a gas turbine and a steam turbine, respectively, but in FIG. 6, a power generation facility with one rotor is provided. As explained. Even if it is any power generation equipment and power generation equipment other than the combined power generation plant, the gas turbine intake filter mounting device (100) according to the present invention can be deployed.

上記したように、コンバインド発電プラントは、高効率で、電力需要に対する調整能力に優れている。従って、稼働/非稼働の期間が不規則であることもあり、吸気設備における吸気フィルタの交換等の取外し、取付けの作業時間は短縮された方が好ましいし、コストも削減できる。その点、本発明に係るガスタービン吸気フィルタ取付け装置100は、吸気フィルタを直接押さえる押さえ板51(または52その他)において、締結部材を緩めると、吸気フィルタの取外し、取付けに妨げとならない態様にごく自然に移動的に動き、しかも安定するため、作業者の手間を取らせることなく、作業時間の短縮に大いに寄与する。   As described above, the combined power plant is highly efficient and has an excellent ability to adjust power demand. Therefore, the operation / non-operation period may be irregular, and it is preferable to reduce the time for removing and installing the intake filter in the intake equipment, and the cost can be reduced. In that respect, the gas turbine intake filter attachment device 100 according to the present invention has a configuration in which, when the fastening member is loosened in the holding plate 51 (or 52 or the like) that directly holds the intake filter, the intake filter is removed and the attachment is not hindered. Since it moves naturally and is stable, it greatly contributes to shortening the working time without taking the labor of the operator.

本発明のガスタービン吸気フィルタ取付け装置の概観を示す正面図である。It is a front view showing an outline of a gas turbine intake filter attachment device of the present invention. 本発明のガスタービン吸気フィルタ取付け装置の概観を示す上面図である。It is a top view which shows the general view of the gas turbine intake filter attachment apparatus of this invention. 本発明に用いられる押さえ板の第1変形例を示す斜視図である。It is a perspective view which shows the 1st modification of the pressing plate used for this invention. 本発明に用いられる押さえ板の第2変形例を示す斜視図である。It is a perspective view which shows the 2nd modification of the pressing plate used for this invention. 本発明に用いられる押さえ板の第3変形例の概観を示し、(a)は平面図、(b)は斜視図、および(c)は製造過程の一場面を示す平面図である。The outline of the 3rd modification of a press board used for the present invention is shown, (a) is a top view, (b) is a perspective view, and (c) is a top view showing one scene of a manufacturing process. 本発明に係るガスタービン吸気フィルタ取付け装置が配設される発電プラントの一例を示すブロック図である。It is a block diagram which shows an example of the power plant by which the gas turbine intake filter attachment apparatus which concerns on this invention is arrange | positioned. 図6の吸気設備に配設される図1と同様のガスタービン吸気フィルタ取付け装置を示す概観図である。It is a general-view figure which shows the gas turbine intake filter attachment apparatus similar to FIG. 1 arrange | positioned at the intake equipment of FIG.

符号の説明Explanation of symbols

100 ガスタービン吸気フィルタ取付け装置
10、11 吸気フィルタ
20 枠組体
201 ガイド部材
30 ボルト部材
40 締結部材
401、402 ナット
50、51、52、53 押さえ板
511、521、531 貫通穴
523 金属部材
524 ボス材
600 発電設備
601 燃焼器
602 ガスタービン
603 空気圧縮機
604 吸気設備
605 脱硝装置
606 排熱回収ボイラ
607 煙突
608 蒸気タービン
609 復水器
610 発電機
DESCRIPTION OF SYMBOLS 100 Gas turbine intake filter attachment apparatus 10, 11 Intake filter 20 Frame assembly 201 Guide member 30 Bolt member 40 Fastening member 401, 402 Nut 50, 51, 52, 53 Holding plate 511, 521, 531 Through hole 523 Metal member 524 Boss material 600 Power generation equipment 601 Combustor 602 Gas turbine 603 Air compressor 604 Intake equipment 605 Denitration device 606 Waste heat recovery boiler 607 Chimney 608 Steam turbine 609 Condenser 610 Generator

Claims (4)

ガスタービンに清浄な空気を供給するための吸気設備内に設けられ、フィルタケースにフィルタパックが収容されてなる箱型の吸気フィルタが所定数配置可能なガイド部材付きの格子状の枠組体と、
前記枠組体から垂直に延びる、一端が前記枠組体に固定され、他端が取付けられるべき隣り合う吸気フィルタの間から突出するように設置されたボルト部材と、
前記ボルト部材に組み合わされる締結部材と、
重心から外れた貫通穴を有した金属部材であって、前記貫通穴に前記ボルト部材が貫通し、略水平にした長手方向の両端側近傍が前記隣り合う吸気フィルタの縁部それぞれに接触した状態で前記締結部材の締め付けが達成され、前記締結部材の締め付けを緩めた状態では自動的に前記長手方向が略鉛直に向き、前記ボルト部材の延びる方向に対向した平面において前記隣り合う吸気フィルタの間の領域内に納まる状態となる前記吸気フィルタの押さえ板と、
を具備したことを特徴とするガスタービン吸気フィルタ取付け装置。
A grid-like frame assembly with a guide member provided in an intake facility for supplying clean air to a gas turbine and capable of arranging a predetermined number of box-type intake filters in which a filter pack is housed in a filter case;
A bolt member extending vertically from the frame assembly, one end fixed to the frame assembly and the other end installed so as to protrude from between adjacent intake filters to be attached;
A fastening member combined with the bolt member;
A metal member having a through hole deviating from the center of gravity, wherein the bolt member passes through the through hole, and the vicinity of both ends in the longitudinal direction which are substantially horizontal are in contact with the edges of the adjacent intake filters. In the state where the fastening member is tightened and the fastening member is loosened, the longitudinal direction is automatically oriented substantially vertically, and between the adjacent intake filters in a plane opposed to the extending direction of the bolt member. A holding plate of the intake filter that is in a state of being in the region
A gas turbine intake filter mounting device comprising:
前記押さえ板は、前記長手方向において前記貫通穴から左右が不均一な形状となっていることを特徴とする請求項1に記載のガスタービン吸気フィルタ取付け装置。   2. The gas turbine intake filter mounting device according to claim 1, wherein the pressing plate has a non-uniform shape from the through hole in the longitudinal direction. 前記押さえ板は、前記長手方向において前記貫通穴から左右のいずれか一方が他方に比べて重くなるような部材が付加されていることを特徴とする請求項1または2に記載のガスタービン吸気フィルタ取付け装置。   3. The gas turbine intake filter according to claim 1, wherein a member is attached to the pressing plate such that either one of the left and right sides from the through hole is heavier than the other in the longitudinal direction. Mounting device. 前記締結部材は、ダブルナット構造を有することを特徴とする請求項1から3のいずれかに記載のガスタービン吸気フィルタ取付け装置。   The gas turbine intake filter mounting device according to any one of claims 1 to 3, wherein the fastening member has a double nut structure.
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