JP5944365B2 - Waterproof structure of outdoor electric dust collector - Google Patents

Waterproof structure of outdoor electric dust collector Download PDF

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JP5944365B2
JP5944365B2 JP2013229506A JP2013229506A JP5944365B2 JP 5944365 B2 JP5944365 B2 JP 5944365B2 JP 2013229506 A JP2013229506 A JP 2013229506A JP 2013229506 A JP2013229506 A JP 2013229506A JP 5944365 B2 JP5944365 B2 JP 5944365B2
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dust collector
electric dust
polyurethane rubber
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waterproof structure
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林 秀行
秀行 林
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明星工業株式会社
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Description

本発明は、燃焼装置からの燃焼排ガスからダストを除去する屋外設置型の電気集塵機と、前記燃焼装置の排気口と前記電気集塵機の排煙入り口とを連通接続する電気集塵機入口ダクトと、前記電気集塵機の排気口に接続する電気集塵機出口ダクトとを設けてある屋外電気集塵設備の防水構造に関する。   The present invention provides an outdoor type electrostatic precipitator that removes dust from combustion exhaust gas from a combustion device, an electrostatic precipitator inlet duct that connects an exhaust port of the combustion device and a smoke exhaust inlet of the electrostatic precipitator, and the electric The present invention relates to a waterproof structure of an outdoor electric dust collector provided with an electric dust collector outlet duct connected to an exhaust port of the dust collector.

従来、上記屋外電気集塵設備は、雨水などの漏水が発生したときには、その漏水箇所のみシリコンコーキングを施したり、あるいは、前記電気集塵機と前記電気集塵機入口ダクトと前記電気集塵機出口ダクトの天井部に樹脂塗料を塗布するだけであった(周知であり適切な文献が見当たらない)。   Conventionally, in the case of leakage of rainwater or the like, the outdoor electric dust collector has been subjected to silicon caulking only at the leakage point, or at the ceiling of the electric dust collector, the electric dust collector inlet duct, and the electric dust collector outlet duct. Only resin paint was applied (well-known and no appropriate literature found).

しかし、上記シリコンコーキングや樹脂塗装を施した防水構造では、長期に亘る防水機能を維持することは困難であった。   However, it has been difficult to maintain a waterproof function over a long period of time with the waterproof structure provided with silicon caulking or resin coating.

従って、本発明の目的は、上記問題点を解消し、長期に亘る防水機能を発揮できるようにするところにある。   Accordingly, an object of the present invention is to solve the above-mentioned problems and to exhibit a waterproof function over a long period of time.

本発明の第1の特徴構成は、燃焼装置からの燃焼排ガスからダストを除去する屋外設置型の電気集塵機と、前記燃焼装置の排気口と前記電気集塵機の排煙入り口とを連通接続する電気集塵機入口ダクトと、前記電気集塵機の排気口に接続する電気集塵機出口ダクトとを設け、前記電気集塵機と前記電気集塵機入口ダクトと前記電気集塵機出口ダクトの内の少なくともいずれか1つの天井部を、防水性のある無発泡で且つ無溶剤型のポリウレタンゴムの吹付け層で覆ってある屋外電気集塵設備の防水構造であって、前記電気集塵機と前記電気集塵機入口ダクトと前記電気集塵機出口ダクトは、夫々の本体の外側に断熱材層を設けてあり、その断熱材層の外側を金属保護板で覆ってあり、前記本体に下端部を取り付けて前記金属保護板を貫通する突出物に対して、前記突出物の周部と前記金属保護板との隙間を塞いで前記金属保護板に取り付けてある塞ぎ板を設けてあり、前記塞ぎ板と前記突出物とに亘って塗布してある樹脂コーキング材を設けてあり、前記ポリウレタンゴムの吹付層は、前記樹脂コーキング材及び前記金属保護板を覆っているところにある。   A first characteristic configuration of the present invention is an outdoor dust collector that removes dust from flue gas from a combustion device, and an electric dust collector that connects an exhaust port of the combustion device and a smoke exhaust port of the electric dust collector. An inlet duct and an electrostatic precipitator outlet duct connected to an exhaust port of the electrostatic precipitator are provided, and at least one of the electric dust collector, the electrostatic precipitator inlet duct, and the electrostatic precipitator outlet duct is waterproof. A waterproof structure of an outdoor electric dust collector that is covered with a non-foamed and solvent-free polyurethane rubber spraying layer, wherein the electrostatic precipitator, the electrostatic precipitator inlet duct, and the electrostatic precipitator outlet duct are respectively A heat insulating material layer is provided on the outer side of the main body, the outer side of the heat insulating material layer is covered with a metal protective plate, and a lower end is attached to the main body to penetrate the metal protective plate. A covering plate attached to the metal protection plate by closing a gap between the peripheral portion of the projection and the metal protection plate is provided for the product, and the coating is applied over the blocking plate and the protrusion. The resin caulking material is provided, and the polyurethane rubber spray layer covers the resin caulking material and the metal protective plate.

本発明の第1の特徴構成によれば、屋外設置型の前記電気集塵機、前記電気集塵機入口ダクト、前記電気集塵機出口ダクト等の天井部には、点検やメンテナンスのために作業員が歩行するための歩廊などを支持するための支柱などが、夫々の本体から上方に突設してあったり、その他の装置が取り付けてあったりして防水処理が一般的には困難であるが、防水性のある無発泡で且つ無溶剤型のポリウレタンゴムの吹付け層で覆うことにより、凹凸した天井部上に、簡単に厚い防水層を形成できる。
しかも、防水性のある無発泡で且つ無溶剤型のポリウレタンゴムの吹付け層は、天井部より上方に突出した突出物に対して、短時間で硬化してその硬化反応に伴う収縮により突出物の周部を締め付けた状態で硬化し、そのために、突出物に対してポリウレタンゴムの吹付け層が密接して、防水性は高く確保される。
金属保護板を貫通する突出物に対して、突出物の周部と金属保護板との隙間を塞ぎ板により塞いであることで、樹脂コーキングが載りやすく、隙間を詰めやすくでき、しかも、樹脂コーキング材及び前記金属保護板を覆う状態に吹付塗装するポリウレタンゴムにより、更に突出物周りの防水を高く実現できる。
According to the first characteristic configuration of the present invention, an operator walks on the ceiling of the outdoor dust collector, the dust collector inlet duct, the dust collector outlet duct, etc. for inspection and maintenance. It is generally difficult to perform waterproofing because there are struts or the like for supporting the walkway etc. protruding upward from each body or other devices are attached, but waterproofing is difficult. By covering with a non-foamed and solvent-free polyurethane rubber spray layer, a thick waterproof layer can be easily formed on the uneven ceiling.
Moreover, the waterproof non-foaming and solvent-free polyurethane rubber spraying layer is a projecting material that cures in a short time and contracts with the curing reaction with respect to the projecting material projecting upward from the ceiling. Therefore, the polyurethane rubber spraying layer is in intimate contact with the protrusions, ensuring high waterproofness.
By blocking the gap between the projecting object's peripheral part and the metal protective plate against the protrusion that penetrates the metal protective plate, the resin caulking can be easily placed and the gap can be easily filled. The polyurethane rubber that is spray-coated in a state of covering the material and the metal protective plate can further achieve high waterproofing around the protrusion.

本発明の第2の特徴構成は、前記ポリウレタンゴムの吹付け層と前記金属保護板との間には、2液エポキシ変成ウレタンプライマーのプライマー塗布層を設けたものである。   According to a second characteristic configuration of the present invention, a primer coating layer of a two-pack epoxy modified urethane primer is provided between the polyurethane rubber spray layer and the metal protective plate.

本発明の第2の特徴構成によれば、2液エポキシ変成ウレタンプライマーのプライマー塗布層により、金属保護板とポリウレタンゴムの吹付け層との接着性を向上させることができ、そのために、長期に亘って、ポリウレタンゴムによる防水性を維持できる。   According to the second characteristic configuration of the present invention, the adhesion between the metal protective plate and the polyurethane rubber spraying layer can be improved by the primer coating layer of the two-component epoxy-modified urethane primer. In addition, the waterproof property by the polyurethane rubber can be maintained.

本発明の第3の特徴構成は、前記ポリウレタンゴムの吹付け層は、2液硬化型のポリウレタンゴムエラストマーから成り、引っ張り強さ10N/mm2以上、引裂き強さ50N/mm以上、伸び率200%以上、ゲル化時間20秒以内の物性を有するところにある。 According to a third characteristic configuration of the present invention, the polyurethane rubber spray layer is made of a two-component curing type polyurethane rubber elastomer, has a tensile strength of 10 N / mm 2 or more, a tear strength of 50 N / mm or more, and an elongation of 200. % Or more and gelation time within 20 seconds.

本発明の第3の特徴構成によれば、ポリウレタンゴムの吹付け層は、2液硬化型ポリウレタンゴムエラストマーにより、弾性の高い断熱層を簡単に形成できる。その上、引っ張り強さ10N/mm2以上、引裂き強さ50N/mm以上、伸び率200%以上のポリウレタンゴムの使用により、天井部が一般的に鉄材により形成される場合でも、その温度変化に伴う伸縮に十分追随できる。
また、ゲル化時間20秒以内の物性を有するために、吹き付け後短時間で硬化して縦方向の吹き付け面や凹凸面に対しても垂れ難くて、均一で安定した厚さの大きい被覆層が形成できる。
According to the 3rd characteristic structure of this invention, the spraying layer of a polyurethane rubber can form a heat-insulating layer with high elasticity simply with a 2 liquid curing type polyurethane rubber elastomer. In addition, the use of polyurethane rubber with a tensile strength of 10 N / mm 2 or more, a tear strength of 50 N / mm or more, and an elongation rate of 200% or more can change the temperature even when the ceiling is generally made of iron. Can fully follow the expansion and contraction involved.
In addition, since it has physical properties within 20 seconds of gelation time, it hardens in a short time after spraying and is difficult to sag against the sprayed surface or uneven surface in the vertical direction, and a uniform and stable coating layer with a large thickness is provided. Can be formed.

本発明の第4の特徴構成は、前記ポリウレタンゴムの吹付け層の外表面をアクリルウレタンからなる紫外線防止保護層で覆ったところにある。   The fourth characteristic configuration of the present invention resides in that the outer surface of the polyurethane rubber spraying layer is covered with an ultraviolet protective layer made of acrylic urethane.

本発明の第4の特徴構成によれば、ポリウレタンゴムの吹付け層の紫外線による劣化を
防止でき、長期に亘るポリウレタンゴムの特性を維持できる。
According to the 4th characteristic structure of this invention, the deterioration by the ultraviolet-ray of the spraying layer of a polyurethane rubber can be prevented, and the characteristic of the polyurethane rubber over a long term can be maintained.

電気集塵機の全体斜視図である。It is a whole perspective view of an electric dust collector. 要部の縦断面図である。It is a longitudinal cross-sectional view of the principal part. 支柱の防水準備のための作用説明図で、(a)は塞ぎ板取り付け前、(b)は塞ぎ板取り付け後の斜視図である。It is action explanatory drawing for the waterproof preparation of a support | pillar, (a) is before a closing board attachment, (b) is a perspective view after a closing board attachment. 要部縦断面図で、(a)は覆い部材を覆う前、(b)は覆い部材を覆った直後、(c)は覆い部材を覆って仕上げた状態を示す。It is principal part longitudinal cross-sectional view, (a) is before covering a covering member, (b) is immediately after covering a covering member, (c) shows the state which covered and covered the covering member.

以下に本発明の実施の形態を図面に基づいて説明する。
図1に示すように、燃焼装置からの燃焼排ガスからダストを除去する屋外設置型の電気集塵機1に、燃焼装置の排気口と前記電気集塵機1の排煙入り口とを連通接続する電気集塵機入口ダクト2と、電気集塵機1の排気口に接続する電気集塵機出口ダクト3とを設けて、屋外電気集塵設備を構成してある。
Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, an electrostatic precipitator inlet duct that connects an exhaust port of the combustion device and a smoke exhaust inlet of the electrostatic precipitator 1 to an outdoor type electrostatic precipitator 1 that removes dust from combustion exhaust gas from the combustion device. 2 and an electrostatic precipitator outlet duct 3 connected to the exhaust port of the electrostatic precipitator 1 are provided to constitute an outdoor electrostatic precipitator.

電気集塵機1と電気集塵機入口ダクト2と電気集塵機出口ダクト3夫々の天井部4上には、点検やメンテナンスのために作業員が歩行するための歩廊などを支持するための支柱5や、ファン、ケーブルダクト、碍子室、配管などが上方に突出した状態で設置しており、それらの突出物6と天井部4との間からダクトや集塵機内部に雨水が浸入するのを防止するために、防水施工して、電気集塵機1の性能を維持しなければならない。   On the ceiling 4 of each of the electrostatic precipitator 1, the electrostatic precipitator inlet duct 2 and the electrostatic precipitator outlet duct 3, a support 5 for supporting a walkway for workers to walk for inspection and maintenance, a fan, It is installed with cable ducts, insulator chambers, pipes, etc. protruding upwards, and is waterproof to prevent rainwater from entering the ducts and dust collector from between the protrusions 6 and the ceiling 4. It must be installed and the performance of the electrostatic precipitator 1 must be maintained.

図2に示すように、前記電気集塵機1と電気集塵機入口ダクト2と電気集塵機出口ダクト3夫々の天井部4は、夫々の本体7の外側に断熱材層8を設け、その断熱材層8の外側を金属保護板9で覆ってある。
前記電気集塵機1と電気集塵機入口ダクト2と電気集塵機出口ダクト3夫々の本体7には、図2及び図3に示すように、特に電気集塵機1において、本体7に下端部を取り付けて金属保護板9を貫通する突出物に対して、突出物の周部と金属保護板9との隙間を塞ぐ塞ぎ板10を金属保護板9に取り付け(図3(a)→(b))、塞ぎ板10と突出物とに亘って樹脂コーキング材11を塗布し、樹脂コーキング材11及び金属保護板9を覆う状態に、ポリウレタンゴム12を吹付け塗布してある。
As shown in FIG. 2, the ceiling part 4 of each of the electrostatic precipitator 1, the electrostatic precipitator inlet duct 2, and the electrostatic precipitator outlet duct 3 is provided with a heat insulating material layer 8 on the outer side of each main body 7. The outside is covered with a metal protection plate 9.
The main body 7 of each of the electrostatic precipitator 1, the electrostatic precipitator inlet duct 2 and the electrostatic precipitator outlet duct 3 is provided with a metal protective plate by attaching a lower end portion to the main body 7 as shown in FIGS. A closing plate 10 that closes the gap between the peripheral portion of the protruding object and the metal protection plate 9 is attached to the metal protection plate 9 (FIG. 3 (a) → (b)). The resin caulking material 11 is applied over the protrusion and the polyurethane rubber 12 is sprayed and applied so as to cover the resin caulking material 11 and the metal protective plate 9.

また、天井部4の金属保護板9に取り付けてある突出物6の端部と金属保護板9との間に隙間がある場合には、その隙間にバックアップ材を充填して、金属保護板9からバックアップ材の外表面部及び突出物6に亘ってポリウレタンゴム12を吹付け塗布してもよいが、図4(a)、(b)、(c)に示すように、金属保護板9と突出物6との間で相対移動が生じるものの場合には、突出物6全体を非接触状態で覆う箱形の覆い部材13を、突出物6に被せた後(図4(a)→(b))に、その覆い部材13の周部と、既に金属保護板9上に吹付け塗布したポリウレタンゴム12とに亘って、更にオーバーラップするようにポリウレタンゴム12を吹付け塗布する(図4(c))。
尚、前記覆い部材13を製造するに当たっては、箱形の型枠にポリウレタンゴム12を吹付け塗装して箱形形状に固化成形し、その固化した覆い部材13から型枠を除去する。
If there is a gap between the end of the protrusion 6 attached to the metal protection plate 9 of the ceiling 4 and the metal protection plate 9, the gap is filled with a backup material, and the metal protection plate 9 The polyurethane rubber 12 may be sprayed and applied over the outer surface portion of the backup material and the protrusions 6 as shown in FIGS. 4 (a), 4 (b), and 4 (c). In the case where relative movement occurs between the projecting object 6 and the projecting object 6, after covering the projecting object 6 with a box-shaped covering member 13 that covers the entire projecting object 6 in a non-contact state (FIG. 4A → (b )), The polyurethane rubber 12 is sprayed and applied so as to further overlap the peripheral portion of the covering member 13 and the polyurethane rubber 12 already sprayed onto the metal protective plate 9 (FIG. 4 ( c)).
In manufacturing the covering member 13, polyurethane rubber 12 is spray-coated on a box-shaped mold and solidified into a box shape, and the mold is removed from the solidified covering member 13.

前記ポリウレタンゴム12は、無発泡で且つ無溶剤型で、2液硬化型のポリウレタンゴムエラストマーから成り、引っ張り強さ10N/mm2以上、引裂き強さ50N/mm以上、伸び率200%以上、ゲル化時間20秒以内の物性を有するものである。
前記ポリウレタンゴム12の吹付け層の外表面は、アクリルウレタンからなる紫外線防止保護層14で覆って、ポリウレタンゴム12の紫外線劣化を防止できるように構成してある。
また、前記ポリウレタンゴム12の吹付け層と金属保護板9との間には、2液エポキシ変成ウレタンプライマーのプライマー塗布層15を設けて、ポリウレタンゴム12の金属保護板9に対する接着性を強化してある。
The polyurethane rubber 12 is a non-foamed, solvent-free, two-component curable polyurethane rubber elastomer, has a tensile strength of 10 N / mm 2 or more, a tear strength of 50 N / mm or more, an elongation of 200% or more, a gel It has physical properties within 20 seconds.
The outer surface of the spray layer of the polyurethane rubber 12 is covered with a UV protection layer 14 made of acrylic urethane so that the UV degradation of the polyurethane rubber 12 can be prevented.
In addition, a primer coating layer 15 of a two-component epoxy modified urethane primer is provided between the spray layer of the polyurethane rubber 12 and the metal protective plate 9 to enhance the adhesion of the polyurethane rubber 12 to the metal protective plate 9. It is.

尚、ポリウレタンゴム12の吹付け層は、前記屋外電気集塵設備において、少なくとも天井部4上の突出物と金属保護板9との境界部を中心にして突出物周辺部を少なくとも覆うように形成すればよく、望むべくは、各天井部4全面に吹付け形成するのが良い。   The spray layer of the polyurethane rubber 12 is formed so as to cover at least the peripheral part of the protrusion centering around the boundary between the protrusion on the ceiling 4 and the metal protective plate 9 in the outdoor electric dust collection equipment. If desired, it is preferable to spray and form the entire surface of each ceiling 4.

尚、上述のように、図面との対照を便利にするために符号を記したが、該記入により本発明は添付図面の構成に限定されるものではない。また、本発明の要旨を逸脱しない範囲において、種々なる態様で実施し得ることは勿論である。   In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry. In addition, it goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention.

1 電気集塵機
2 電気集塵機入口ダクト
3 電気集塵機出口ダクト
6 突出物
7 本体
8 断熱材層
9 金属保護板
10 塞ぎ板
11 樹脂コーキング材
12 ポリウレタンゴム
14 紫外線防止保護層
15 プライマー塗布層
DESCRIPTION OF SYMBOLS 1 Electric dust collector 2 Electric dust collector inlet duct 3 Electric dust collector outlet duct 6 Protrusion 7 Main body 8 Heat insulation material layer 9 Metal protection board 10 Closure board 11 Resin caulking material 12 Polyurethane rubber 14 UV protection layer 15 Primer coating layer

Claims (4)

燃焼装置からの燃焼排ガスからダストを除去する屋外設置型の電気集塵機と、前記燃焼装置の排気口と前記電気集塵機の排煙入り口とを連通接続する電気集塵機入口ダクトと、前記電気集塵機の排気口に接続する電気集塵機出口ダクトとを設け、前記電気集塵機と前記電気集塵機入口ダクトと前記電気集塵機出口ダクトの内の少なくともいずれか1つの天井部を、防水性のある無発泡で且つ無溶剤型のポリウレタンゴムの吹付け層で覆ってある屋外電気集塵設備の防水構造であって、
前記電気集塵機と前記電気集塵機入口ダクトと前記電気集塵機出口ダクトは、夫々の本体の外側に断熱材層を設けてあり、その断熱材層の外側を金属保護板で覆ってあり、
前記本体に下端部を取り付けて前記金属保護板を貫通する突出物に対して、前記突出物の周部と前記金属保護板との隙間を塞いで前記金属保護板に取り付けてある塞ぎ板を設けてあり、
前記塞ぎ板と前記突出物とに亘って塗布してある樹脂コーキング材を設けてあり、
前記ポリウレタンゴムの吹付層は、前記樹脂コーキング材及び前記金属保護板を覆っている屋外電気集塵設備の防水構造。
An outdoor dust collector that removes dust from the combustion exhaust gas from the combustion device, an electrical dust collector inlet duct that connects the exhaust port of the combustion device and the smoke exhaust port of the electrostatic dust collector, and the exhaust port of the electrostatic dust collector An electric dust collector outlet duct connected to the electric dust collector, and at least any one of the electric dust collector, the electric dust collector inlet duct, and the electric dust collector outlet duct has a waterproof, non-foaming and solvent-free ceiling. A waterproof structure of an outdoor electric dust collector covered with a spraying layer of polyurethane rubber,
The electrostatic precipitator, the electrostatic precipitator inlet duct, and the electrostatic precipitator outlet duct are provided with a heat insulating material layer on the outside of each main body, and the outside of the heat insulating material layer is covered with a metal protective plate,
Provided with a blocking plate attached to the metal protection plate by closing the gap between the peripheral portion of the projection and the metal protection plate with respect to the projection that has a lower end attached to the main body and penetrates the metal protection plate And
A resin caulking material is applied over the blocking plate and the protrusion.
The polyurethane rubber spray layer is a waterproof structure for outdoor electric dust collection equipment covering the resin caulking material and the metal protective plate.
前記ポリウレタンゴムの吹付け層と前記金属保護板との間には、2液エポキシ変成ウレタンプライマーのプライマー塗布層を設けてある請求項1に記載の屋外電気集塵設備の防水構造。   The waterproof structure of the outdoor electric dust collection equipment according to claim 1, wherein a primer coating layer of a two-component epoxy modified urethane primer is provided between the polyurethane rubber spray layer and the metal protective plate. 前記ポリウレタンゴムの吹付け層は、2液硬化型のポリウレタンゴムエラストマーから成り、引っ張り強さ10N/mm2以上、引裂き強さ50N/mm以上、伸び率200%以上、ゲル化時間20秒以内の物性を有するものである請求項1または2に記載の屋外電気集塵設備の防水構造。 The polyurethane rubber spray layer is made of a two-component curing type polyurethane rubber elastomer, and has a tensile strength of 10 N / mm 2 or more, a tear strength of 50 N / mm or more, an elongation of 200% or more, and a gelation time of 20 seconds or less. The waterproof structure for outdoor electric dust collection equipment according to claim 1 or 2, which has physical properties. 前記ポリウレタンゴムの吹付け層の外表面をアクリルウレタンからなる紫外線防止保護層で覆ってある請求項1〜3のいずれかに記載の屋外電気集塵設備の防水構造。   The waterproof structure of the outdoor electric dust collection equipment according to any one of claims 1 to 3, wherein an outer surface of the spraying layer of the polyurethane rubber is covered with an ultraviolet protective layer made of acrylic urethane.
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