JP2019085690A - Inspection work bench of dust collector - Google Patents
Inspection work bench of dust collector Download PDFInfo
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- JP2019085690A JP2019085690A JP2017211535A JP2017211535A JP2019085690A JP 2019085690 A JP2019085690 A JP 2019085690A JP 2017211535 A JP2017211535 A JP 2017211535A JP 2017211535 A JP2017211535 A JP 2017211535A JP 2019085690 A JP2019085690 A JP 2019085690A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
Description
本発明は、海水又は河川水から塵芥を取り除く除塵装置の点検作業台に関する。 BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to an inspection work table for a dust remover that removes dust from seawater or river water.
発電所などのプラント設備には、海水、河川水を導いて冷却水を確保するための取水設備が配備されることがある。この取水設備には流体中に混入する塵芥などの異物を除去回収するための除塵装置も配備されている。
除塵装置は、水路を横切るように左右一対のキャリングチェーンを設けて、このキャリングチェーンのリンク毎にバースクリーン又は金網などのスクリーンを水流方向に対して垂直又は所定角度に傾斜させて立設させている。そして、キャリングチェーンによりスクリーンを周回移動させることにより、スクリーンに付着した塵芥を水路外に除去している。
しかし大量の塵芥が除塵装置のスクリーンを塞ぐと、取水の妨げとなり、スクリーン前後に異常水位差が生じてしまう。そうするとスクリーンの負荷が増大してスクリーンが破損するおそれがある。
Plant facilities such as power stations may be provided with water intake facilities for guiding seawater and river water to secure cooling water. The water intake system is also provided with a dust removing device for removing and collecting foreign matters such as dust mixed in the fluid.
The dust removal apparatus is provided with a pair of left and right carrying chains so as to cross the water channel, and a screen such as a bar screen or a wire mesh is erected vertically or at a predetermined angle with respect to the water flow direction for each link of this carrying chain. There is. And, by moving the screen by a carrying chain, dust attached to the screen is removed out of the water channel.
However, if a large amount of dust blocks the screen of the dust removal device, it will interfere with water intake, and an abnormal water level difference will occur between the front and back of the screen. As a result, the load on the screen may increase and the screen may be damaged.
このような異常水位差が生じないようにスクリーンの回動部分について、設置時の調整や運転開始後の定期的なメンテナンスが必要となる。
従来の除塵装置の点検作業は、十数メートルの水路深さにおいて、装置全面に亘って足場を組んでいた。しかし、足場の組立は足場の材料費、設置又は取り外し費用ばかりでなく工期も費やすことになる。
またプラント停止期間の短縮は重要な課題であり、このため従来、種々の改善策が講じられている。
In order to prevent such an abnormal water level difference, it is necessary to perform adjustment at the time of installation and periodic maintenance after the start of operation, for the rotating portion of the screen.
In the conventional dust removing apparatus inspection work, a footing was formed over the entire surface of the apparatus at a channel depth of a dozen meters. However, the assembly of the scaffold will spend not only the cost of the material of the scaffold, the cost of installation or removal but also the construction period.
In addition, shortening of the plant shutdown period is an important issue, and various improvement measures have been conventionally taken.
特許文献１に開示の技術は、点検時において、着脱可能な小型足場を用いている。
特許文献２に開示の技術は、点検時において、装置を水面から持ち上げて行っている。
The technique disclosed in Patent Document 1 uses a removable small scaffold at the time of inspection.
The technique disclosed in Patent Document 2 lifts the device from the water surface at the time of inspection.
しかしながら特許文献１に開示の技術によれば、簡易の足場が小さすぎて、工具等を用いながら複数の作業者が作業できる十分なスペースを確保できない可能性がある。また小型足場は係合部をスクリーンに引っ掛けて容易に着脱できる構成であるが、足場が不安定となり安全性の確保には不十分であった。さらに小型足場を複数設置して移動できるとしているが、作業者が複数の足場を持参しながら、上下方向に移動する作業は危険を伴うおそれが高い。 However, according to the technology disclosed in Patent Document 1, there is a possibility that a simple scaffold is too small to secure a sufficient space where a plurality of workers can work while using a tool or the like. In addition, although the small scaffold has a configuration in which the engaging part can be easily attached and detached by hooking the screen to the screen, the scaffold becomes unstable and is insufficient for securing safety. Furthermore, although it is supposed that a plurality of small scaffolds can be installed and moved, it is highly likely that the work of moving in the vertical direction while the operator brings a plurality of scaffolds is dangerous.
また特許文献２に開示の技術に拠れば、水面上で点検作業を行うことができるが、小さい装置であれば、このような構成を採用できる。しかし、発電所などに設置する大きな装置の場合には、地上に除塵機を吊り上げるクレーン等の重機が新たに必要となる。
この他にもスクリーンのフレームに点検作業用梯子を常設する方法がある。しかし点検時以外（稼働時）の期間において、梯子が水中に浸かった状態では通水の抵抗となる他にも海生物が付着してしまう。そうすると点検時において作業者が足を滑らせるおそれがあった。また梯子そのものが腐食するおそれもある。
Further, according to the technology disclosed in Patent Document 2, the inspection operation can be performed on the surface of the water, but such a configuration can be adopted for a small device. However, in the case of a large apparatus installed in a power plant or the like, a heavy machine such as a crane for lifting the dust collector on the ground is newly required.
Besides this, there is also a method of permanently installing an inspection work ladder on the screen frame. However, in the period other than the time of inspection (operation time), if the gyoza is immersed in water, marine organisms will be attached in addition to resistance to water flow. In that case, there was a risk that the worker slipped his leg at the time of inspection. In addition, the insulator itself may be corroded.
上記従来技術の問題点に鑑み、本発明は、除塵装置の点検作業を安全かつ効率的に行うことができる除塵装置の点検作業台を提供することにある。 SUMMARY OF THE INVENTION In view of the above-described problems of the prior art, the present invention is to provide a dust removal apparatus inspection work table capable of safely and efficiently performing a dust removal apparatus inspection operation.
上記課題を解決するための第１の手段として、本発明は、除塵装置のスクリーンを取り外したキャリングチェーンのリンクプレート間に着脱可能な接続プレートと、
一対の前記接続プレート間に取り付けるゴンドラ本体を備えたことを特徴とする除塵装置の点検作業台を提供することにある。
上記第１の手段によれば、除塵装置本体に作業台を取り付けることにより、装置全面に亘って足場を組む必要がない。また、作業台の上下移動は装置本体の駆動源を利用することにより新たに設ける必要がない。従って、据付時間を短縮でき、かつ点検コストを大幅に削減できる。さらに、既存の装置であっても容易に取り付けることができる。またスクリーンと付け替えることにより容易に設置できる。
As a first means for solving the above problems, according to the present invention, there is provided a connection plate which is removable between link plates of a carrying chain from which a screen of a dust remover is removed,
An object of the present invention is to provide an inspection work table of a dust remover characterized by comprising a gondola main body to be attached between a pair of the connection plates.
According to the first means, by attaching the workbench to the dust removing device main body, it is not necessary to set up a scaffold over the entire surface of the device. In addition, the vertical movement of the workbench does not need to be newly provided by utilizing the drive source of the apparatus main body. Therefore, the installation time can be shortened and the inspection cost can be significantly reduced. Furthermore, even existing devices can be easily attached. It can be easily installed by replacing it with a screen.
上記課題を解決するための第２の手段として、本発明は、第１の手段において、前記ゴンドラ本体は、上面開口を有する箱状であって、床面及び側面を網状に形成していることを特徴とする除塵装置の点検作業台を提供することにある。
上記第２の手段によれば、箱状の作業スペースにより作業員が誤って足場を踏み外すおそれがなく作業の安全性を高めることができる。
また網体とすることで作業台又は外部からの視認性が良くなり安全性が高まる。さらにゴンドラ全体の軽量化が図れ、ゴンドラを上下移動させる駆動源の負荷を減らし、かつゴンドラの運搬及び着脱作業が容易となる。
As a second means for solving the above-mentioned problems, according to the present invention, in the first means, the gondola main body is a box shape having an upper surface opening, and the floor surface and the side surface are formed in a net shape. It is providing the inspection bench of the dust removal device characterized by the above.
According to the above-mentioned second means, it is possible to enhance the safety of the operation without the risk of the worker accidentally stepping on the scaffold due to the box-like work space.
Further, by using the mesh, visibility from the work table or the outside is improved, and safety is enhanced. Furthermore, the overall weight of the gondola can be reduced, the load on the drive source for moving the gondola up and down can be reduced, and the transportation and removal of the gondola can be facilitated.
上記課題を解決するための第３の手段として、本発明は、第２の手段において、前記ゴンドラ本体は、前記上面開口の周囲に沿って安全柵を備えたことを特徴とする除塵装置の点検作業台を提供することにある。
上記第３の手段によれば、高所作業における作業員の安全性を高めることができる。
As a third means for solving the above problems, according to the present invention, in the second means, the gondola main body is provided with a safety fence along the periphery of the upper surface opening. To provide a work platform.
According to the third means, the safety of the worker in the high-altitude work can be enhanced.
上記課題を解決するための第４の手段として、本発明は、第３の手段において、前記安全柵は、前記スクリーンと対向する側面に開閉扉を備えたことを特徴とする除塵装置の点検作業台を提供することにある。
上記第４の手段によれば、作業員が容易に乗り降りできるとともに、作業中は扉を閉めることにより作業の安全性を高めることができる。
As a fourth means for solving the above problems, according to the present invention according to the third means, the safety fence is provided with an open / close door on the side facing the screen. To provide a platform.
According to the fourth means, the operator can easily get on and off, and the safety of the operation can be enhanced by closing the door during the operation.
本発明によれば、据付時間を短縮でき、かつ点検コストを大幅に削減できる。また点検作業中の作業者の高い安全性を確保できる。また、点検時のみ取り付ける構成のため、常設時の通水抵抗のおそれがない。 According to the present invention, the installation time can be shortened and the inspection cost can be significantly reduced. In addition, high safety of workers during inspection work can be secured. In addition, there is no risk of water flow resistance at the time of permanent installation, as it is attached only at the time of inspection.
本発明の除塵装置の点検作業台の実施形態を添付の図面を参照しながら、以下詳細に説明する。 Embodiments of the inspection work table of the dust removing apparatus of the present invention will be described in detail below with reference to the attached drawings.
［除塵装置１］
本発明の点検作業台の取り付け対象となる除塵装置について、以下説明する。図４は除塵装置の説明図である。図示のように除塵装置１は、水路を横切るように設けた左右（以下、水路を横切る方向を左右という）一対のキャリングチェーン２と、キャリングチェーン２を周回させる上部及び下部スプロケットホイール３（上部スプロケットホイールは不図示）と、キャリングチェーン２のリンク毎に水流方向に対して垂直又は所定角度に傾斜させたスクリーン４と、上部及び下部スプロケットホイール３を支持するケーシング５を備えている。
[Dust removal device 1]
The dust removal apparatus to which the inspection work table of the present invention is attached will be described below. FIG. 4 is an explanatory view of the dust removing apparatus. As shown in the figure, the dust remover 1 comprises a pair of left and right (hereinafter referred to as right and left directions) carrying chains 2 provided across the water channel, and upper and lower sprocket wheels 3 (upper sprockets) for rotating the carrying chain 2 The wheel is provided with a screen 4 which is inclined at an angle or perpendicular to the water flow direction for each link of the carrying chain 2 and a casing 5 for supporting the upper and lower sprocket wheels 3.
［点検作業台１０］
図１は本発明の除塵装置の点検作業台の説明図である（図中の安全柵１６及び開閉扉１８は簡略化している）。図示のように、本発明の除塵装置の点検作業台１０は、除塵装置１のスクリーン４を取り外したキャリングチェーン２のリンクプレート間に着脱可能な接続プレート１２と、一対の前記接続プレート間に取り付けるゴンドラ本体１４を備えている。
接続プレート１２は、一対のリンクプレート間でキャリングチェーン２に沿って取り付ける金属部材であり、スクリーン４の固定ボルトを螺合する孔と同ピッチの孔１２１を上端に有している。また接続プレート１２は、下端が後述するゴンドラ本体１４に接続している。
[Inspection work table 10]
FIG. 1 is an explanatory view of an inspection work table of the dust removal apparatus according to the present invention (the safety fence 16 and the open / close door 18 in the drawing are simplified). As illustrated, the inspection work table 10 of the dust removal apparatus of the present invention is attached between the link plate of the carrying chain 2 from which the screen 4 of the dust removal apparatus 1 has been removed and the removable connection plate 12 and the pair of connection plates. It has a gondola body 14.
The connection plate 12 is a metal member attached along the carrying chain 2 between a pair of link plates, and has holes 121 at the upper end with the same pitch as the holes into which the fixing bolts of the screen 4 are screwed. The lower end of the connection plate 12 is connected to the gondola main body 14 described later.
ゴンドラ本体１４は、上面開口を有する箱状であって、床面及び側面を網状に形成している。ゴンドラ本体１４の横幅は、リンクプレート間に取り付けられるようにスクリーン４と同じ長さに設定している。ゴンドラ本体１４は、床面を複数の作業者が同時に乗って作業できるスペースに設定している。また側面は床面の周囲を囲むように形成し、所定の高さに設定し作業中の作業者が誤って踏み外すことがない。
このような構成の点検作業台１０は、ゴンドラ本体１４の上部開口の端部に一対の接続プレート１２を接続させた一体構造であり、本体を網体とすることにより運搬を容易にしている。そして、固定ボルトを用いてリンクプレート間に容易に着脱できる。
The gondola main body 14 is in the form of a box having a top opening, and the floor surface and the side surface are formed in a net shape. The width of the gondola body 14 is set to the same length as the screen 4 so as to be attached between the link plates. The gondola main body 14 sets the floor surface to a space where a plurality of workers can work at the same time. Further, the side surface is formed so as to surround the periphery of the floor surface, and a worker who is set at a predetermined height and does not accidentally step off the work does not release it.
The inspection work table 10 having such a configuration has an integral structure in which a pair of connection plates 12 is connected to the end of the upper opening of the gondola main body 14, and the transportation is facilitated by using the main body as a net. And it can be easily attached and detached between link plates using a fixing bolt.
［変形例］
図２は点検作業台の安全柵及び開閉扉の説明図である。図示のようにゴンドラ本体１４は、上面開口の周囲に沿って安全柵１６を備えている。
安全柵１６は、ゴンドラ本体１４の上面開口から所定の高さで側面に沿って形成している。また安全柵１６は網体、バー等の金属部材を用いることができる。
このような安全柵１６は上面開口の外周に沿って筒状に形成することにより、作業者の胸元近くまでカバーすることができ、高所作業時における安全性を確保できる。なお、また安全柵１６は、スクリーン側の柵を着脱式とし、平面視でコ字形状に取り付けることもできる。これにより、作業員の妨げとならず点検作業を効率良く行うことができる。
また安全柵１６は、前記スクリーンと対向する側面に開閉扉１８を備えている。開閉扉１８は、安全柵の内側から外側に開閉するスイング式のドアである。このような開閉扉１８によれば、安全柵１６が所定の高さであっても取り外すことなく、作業者が容易に作業台に乗り降りすることができる。
[Modification]
FIG. 2 is an explanatory view of a safety fence and an open / close door of the inspection work table. As shown, the gondola body 14 is provided with a safety fence 16 along the periphery of the top opening.
The safety fence 16 is formed along the side surface at a predetermined height from the top opening of the gondola main body 14. Further, the safety fence 16 can use a metal member such as a net or a bar.
By forming such a safety fence 16 in a cylindrical shape along the outer periphery of the upper surface opening, it is possible to cover up to near the chest of the worker, and the safety at the time of work at a high place can be ensured. The safety fence 16 can also be attached in a U-shape in plan view, with the fence on the screen side being removable. Thus, the inspection work can be efficiently performed without obstructing the workers.
Further, the safety fence 16 is provided with an open / close door 18 on the side facing the screen. The opening and closing door 18 is a swing type door that opens and closes from the inside to the outside of the safety fence. According to such an open / close door 18, an operator can easily get on and off the work bench without removing even if the safety fence 16 is at a predetermined height.
［作用］
図３は除塵装置の点検作業台の取り付け及び取り外しの説明図である。
（Ａ）に示すようにキャリングチェーン２のリンクプレート間に取り付けた任意の位置のスクリーン４を地上付近で取り外す。このとき取り外すスクリーン４は少なくとも1つ以上であり、複数の場合、所定間隔で取り外すことにより広範囲の点検作業が可能となる。
（Ｂ）に示すように除塵装置の点検作業台１０を取り付ける。接続プレート１２の固定ボルト用の孔１２１は、スクリーン４に設けたボルト穴と同ピッチに形成している。このため、スクリーン４を取り外したリンクプレートに固定ボルトを用いて容易に取り付ける（付け替える）ことができる。
なお取付作業は、地上に於いて行うことにより安全かつ容易に行える。
[Effect]
FIG. 3 is an explanatory view of the attachment and removal of the inspection work table of the dust collection device.
As shown in (A), the screen 4 at an arbitrary position attached between the link plates of the carrying chain 2 is removed near the ground. At this time, the screen 4 to be removed is at least one or more, and in a plurality of cases, a wide range of inspection operations can be performed by removing at predetermined intervals.
As shown in (B), the dust removal apparatus inspection work table 10 is attached. The holes 121 for fixing bolts of the connection plate 12 are formed at the same pitch as the bolt holes provided in the screen 4. Therefore, the screen 4 can be easily attached (replaced) to the link plate from which the screen 4 has been removed using the fixing bolt.
The installation work can be done safely and easily by performing on the ground.
（Ｃ）に示すように除塵装置の点検作業台１０を上昇又は下降させて点検作業を行う。点検作業台１０の上下移動は、新たな駆動源を必要とせず除塵装置１の駆動源（不図示）により、容易に行うことができる。具体的には駆動源によりキャリングチェーンを時計周り又は反時計周りに回動させる。また作業員は、開閉扉１８を開けて作業台内へ容易に乗り降りすることができる。作業中は、開閉扉１８を閉めると共に安全柵１６によって作業者の高い安全性を確保できる。
なお、このとき、除塵装置の駆動源による回動は、集中管理室からの制御を遮断して、装置付属の操作スイッチで切り替えることにより、より安全性を高めることができる。また、キャリングチェーンの駆動源（回動装置）にディスクブレーキ装置を組み込むことにより、より安全性を高めることができる。さらに、ゴンドラに乗る際、作業者は、地上から吊り下げた親綱に安全帯を装着することで、より安全性を高めることができる。
（Ｄ）に示すように点検作業終了後は、点検作業台１０を地上付近まで移動する。そして、接続プレート１２の固定ボルトを除去して点検作業台１０をリンクプレート間から取り外す。
（Ｅ）に示すようにスクリーン４を取り付けて、作業前の状態（稼働可能な状態）に戻すことができる。
As shown in (C), the inspection work table 10 of the dust collector is raised or lowered to perform the inspection work. The up and down movement of the inspection work table 10 can be easily performed by the drive source (not shown) of the dust collection device 1 without requiring a new drive source. Specifically, the driving chain rotates the carrying chain clockwise or counterclockwise. In addition, the worker can easily get in and out of the work table by opening the open / close door 18. During the operation, the door 18 is closed and the safety fence 16 can ensure high safety of the worker.
At this time, the rotation of the dust removal apparatus by the drive source can be further improved in safety by shutting off the control from the central control room and switching it with the operation switch attached to the apparatus. In addition, the safety can be further enhanced by incorporating the disc brake device into the driving source (rotation device) of the carrying chain. Furthermore, when riding on the gondola, the worker can further enhance safety by attaching a safety band to the main rope suspended from the ground.
As shown in (D), after the inspection work, the inspection work table 10 is moved to near the ground. Then, the fixing bolt of the connection plate 12 is removed and the inspection work table 10 is removed from between the link plates.
As shown in (E), the screen 4 can be attached to return to the state before the operation (the operable state).
このような本発明の除塵装置の点検作業台によれば、据付時間を短縮でき、かつ点検コストを大幅に削減できる。また点検作業中の作業者の高い安全性を確保できる。 According to the inspection work table of the dust removal apparatus of the present invention, the installation time can be shortened, and the inspection cost can be significantly reduced. In addition, high safety of workers during inspection work can be secured.
本発明は、プラントなどの取水設備における塵芥を捕集する回転式網枠を備えた除塵装置の点検作業台として特に有用である。 INDUSTRIAL APPLICABILITY The present invention is particularly useful as an inspection work table of a dust removing device provided with a rotary mesh frame for collecting dust in a water intake facility such as a plant.
1………除塵装置、２………キャリングチェーン、３………スプロケットホイール、４………スクリーン、５………ケーシング、
１０………点検作業台、１２………接続プレート、１２１………孔、１４………ゴンドラ本体、１６………安全柵、１８………開閉扉。
1 ......... Dust removal device, 2 ... ... Carrying chain, 3 ... ... Sprocket wheel, 4 ... ... Screen, 5 ... ... Casing,
10 ...... Inspection work table, 12 ...... Connection plate, 121 ...... Hole, 14 ...... Gondola main body, 16 ...... Safety fence, 18 ...... Opening and closing door.
Claims (4)
一対の前記接続プレート間に取り付けるゴンドラ本体を備えたことを特徴とする除塵装置の点検作業台。 A removable connection plate between the link plates of the carrying chain from which the dust collector screen has been removed,
An inspection work table of a dust remover characterized by comprising a gondola main body attached between a pair of the connection plates.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175197A (en) * | 2021-04-19 | 2021-07-27 | 胡新翔 | Intelligent auxiliary assembly for avoiding deflection and inclination of hanging basket for building construction |
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| JP3020796U (en) * | 1995-07-20 | 1996-02-06 | 前田建設工業株式会社 | Construction gondola |
| JP2008063909A (en) * | 2006-09-11 | 2008-03-21 | Chugoku Electric Power Co Inc:The | Scaffolding and method of allowing person to move on screen using the same |
| JP2011246894A (en) * | 2010-05-24 | 2011-12-08 | Kawase Co Ltd | Work scaffold device |
| JP2012167468A (en) * | 2011-02-14 | 2012-09-06 | Seiji Takechi | Unloading device |
| JP2016211222A (en) * | 2015-05-08 | 2016-12-15 | 株式会社丸高工業 | Gondola for work |
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| JPH0363652U (en) * | 1989-10-27 | 1991-06-21 | ||
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| JP3013546U (en) * | 1995-01-10 | 1995-07-18 | 三菱化工機株式会社 | Carrier chain for dust remover |
| JP3020796U (en) * | 1995-07-20 | 1996-02-06 | 前田建設工業株式会社 | Construction gondola |
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| CN113175197A (en) * | 2021-04-19 | 2021-07-27 | 胡新翔 | Intelligent auxiliary assembly for avoiding deflection and inclination of hanging basket for building construction |
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