JP5830783B2 - Method for removing deposits in jacket and deposit removal apparatus in jacket - Google Patents
Method for removing deposits in jacket and deposit removal apparatus in jacket Download PDFInfo
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- JP5830783B2 JP5830783B2 JP2012240070A JP2012240070A JP5830783B2 JP 5830783 B2 JP5830783 B2 JP 5830783B2 JP 2012240070 A JP2012240070 A JP 2012240070A JP 2012240070 A JP2012240070 A JP 2012240070A JP 5830783 B2 JP5830783 B2 JP 5830783B2
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Description
本発明は、圧力容器（リアクター）を構成するシェル本体の外周部に設けられたジャケット内に付着する付着物を除去する方法およびジャケット内付着物除去装置に関するものである。 The present invention relates to a method for removing deposits adhering to a jacket provided on an outer peripheral portion of a shell body constituting a pressure vessel (reactor), and an apparatus for removing deposits in a jacket.
リアクターを薬液反応槽等として使用する場合、リアクター内を所定の薬液反応に最適な温度に調整する手段として、リアクターを構成するシェル本体の外周部にジャケットを設けた構造が従来から採用されている。 When a reactor is used as a chemical reaction tank or the like, a structure in which a jacket is provided on the outer periphery of the shell body constituting the reactor has been conventionally employed as a means for adjusting the temperature inside the reactor to an optimum temperature for a predetermined chemical reaction. .
当該構造では、ジャケット内に熱媒または冷媒を流してリアクター内の温度調節が行われる。熱媒・冷媒としては、ブライン(プロピレンゴリコール、エチレンゴリコール、エタノール等と水との混合物を代表例とする不凍液)或いはスチーム或いは工業用水が使用される。これらの熱媒・冷媒は適宜用途に応じて様々なものが使用されるため、例えば、ブライン中に含有されジャケット内に付着していた塩化カルシウムと、後に熱媒として使用されたスチームとの相乗作用により鉄製のシェル外周面やジャケット内周面が腐食して付着物が形成されたり、ブライン中に含有されジャケット内に付着していたエチレングリコールが、後に冷媒として使用された工業用水中に含まれる菌の養分となり、該養分によって繁殖した菌がシェル外周面やジャケット内周面への付着物となる等の現象が観察される。その他、工業用水に含まれる土砂やその他スケール成分がシェル外周面やジャケット内周面への付着物となる現象も観察される。 In this structure, the temperature inside the reactor is adjusted by flowing a heat medium or a refrigerant into the jacket. As the heat medium / refrigerant, brine (an antifreeze liquid typically composed of a mixture of propylene glycol, ethylene glycol, ethanol or the like and water), steam, or industrial water is used. Since various types of these heat mediums and refrigerants are used depending on the application, for example, synergism between calcium chloride contained in brine and adhered to the jacket and steam used as the heat medium later. Due to the action, the outer peripheral surface of the iron shell and the inner peripheral surface of the jacket are corroded to form deposits, or ethylene glycol contained in the brine and attached to the jacket is contained in industrial water that was later used as a refrigerant. A phenomenon is observed in which the bacteria that have been propagated by the nutrients become adhered to the outer peripheral surface of the shell or the inner peripheral surface of the jacket. In addition, a phenomenon in which earth and sand and other scale components contained in industrial water become deposits on the outer peripheral surface of the shell and the inner peripheral surface of the jacket is also observed.
シェル外周面やジャケット内周面に付着物が発生すると、熱交換率の低下による生産性の悪化や、錆の要因となるため好ましくない。圧力容器では法令で所定の板厚を確保することが定められているが、シェル外周面の錆は、超音波探触子等による板厚測定結果の精度を悪化させる要因となっている。 If deposits are generated on the outer peripheral surface of the shell or the inner peripheral surface of the jacket, it is not preferable because it causes deterioration in productivity due to a decrease in the heat exchange rate and causes rust. In the pressure vessel, it is stipulated that a predetermined plate thickness is ensured by law, but rust on the outer peripheral surface of the shell is a factor that deteriorates the accuracy of the plate thickness measurement result by an ultrasonic probe or the like.
ただし、ジャケット内は、通常、間隙２０〜１００ｍｍ程度に設計されているため、手作業による付着物や錆の除去は困難である。また、フランジ構造の採用によりジャケットを取り外し可能な構造とすることは可能であるが、当該構造は製作コストの観点から実用性に欠き、従来から、シェル本体の外周部にジャケットを溶接した構造が一般的に採用されている（例えば、特許文献１）。当該構造において、ジャケット内に付着した付着物（付着物や錆等）の除去を目的とするメンテナンス時には、シェル本体とジャケットの溶接部分を溶断してジャケットを取り外して付着物を除去することが考えられるが、圧力容器であるリアクターは、安全確保の見地から、各種法令、法規を満たすことが求められるため、例えばメンテナンス時にジャケットを溶断した場合、溶接後に各種法令、法規を満たす製品であることの再認定を受ける必要があり、手続きが煩雑である問題があった。 However, since the inside of the jacket is usually designed with a gap of about 20 to 100 mm, it is difficult to remove deposits and rust by hand. Although it is possible to make the jacket detachable by adopting a flange structure, this structure lacks practicality from the viewpoint of production cost, and conventionally, a structure in which the jacket is welded to the outer periphery of the shell body has been used. Generally employed (for example, Patent Document 1). In this structure, when performing maintenance for the purpose of removing deposits (such as deposits and rust) attached to the jacket, it is considered that the weld is removed from the shell body and the jacket, and the jacket is removed to remove the deposits. However, a reactor that is a pressure vessel is required to satisfy various laws and regulations from the viewpoint of ensuring safety.For example, if a jacket is blown during maintenance, it must be a product that meets various laws and regulations after welding. There was a problem that it was necessary to receive re-certification and the procedure was complicated.
本発明の目的は前記の問題を解決し、シェル本体の外周部にジャケットを溶接した構造のリアクターにおいて、ジャケットを溶断することなく、ジャケット内の付着物を効果的に除去することができる技術を提供することである。 An object of the present invention is to solve the above-mentioned problems, and in a reactor having a structure in which a jacket is welded to the outer peripheral portion of the shell body, a technique capable of effectively removing deposits in the jacket without fusing the jacket. Is to provide.
上記課題を解決するためになされた本発明のジャケット内付着物除去方法は、圧力容器の外周に設けた空冷・加熱ジャケットのノズルから、付着物除去手段を備えたワイヤを挿入してジャケット内の付着物除去を行うジャケット内付着物除去方法であって、該ワイヤが、スプリング状に成形したスプリングワイヤを複数本並列して点溶接した連結スプリングワイヤであることを特徴とするものである。ジャケット内付着物除去方法。 In order to solve the above problems, the method for removing deposits in a jacket according to the present invention includes inserting a wire equipped with deposit removal means from a nozzle of an air cooling / heating jacket provided on the outer periphery of a pressure vessel. An in-jacket deposit removing method for removing deposits, wherein the wire is a connecting spring wire that is spot-welded in parallel with a plurality of spring wires formed in a spring shape. How to remove deposits in the jacket.
上記課題を解決するためになされた本発明のジャケット内付着物除去装置は、長さ方向の複数個所で点溶接された状態で互いに連結された複数本の並列するスプリングワイヤからなる連結スプリングワイヤと、該連結スプリングワイヤの先端に備えた付着物除去手段から構成されることを特徴とするものである。 An apparatus for removing deposits in a jacket according to the present invention, which has been made to solve the above-mentioned problems, includes a connecting spring wire comprising a plurality of parallel spring wires connected to each other in a spot-welded state at a plurality of locations in the length direction. The attachment spring removing means is provided at the tip of the connecting spring wire.
請求項３記載の発明は、請求項２記載のジャケット内付着物除去装置において、該連結スプリングワイヤの先端に内視鏡を備えることを特徴とするものである。 According to a third aspect of the present invention, in the apparatus for removing deposits in a jacket according to the second aspect, an endoscope is provided at the tip of the connecting spring wire.
圧力容器の外周に設けた空冷・加熱ジャケット内に、スプリング状に成形したスプリングワイヤを複数本並列して点溶接した連結スプリングワイヤを挿入して、該連結スプリングワイヤに備えた付着物除去手段によってジャケット内の付着物を除去する本発明によれば、ジャケット内の付着物除去作業を、ジャケットを溶断することなく、簡易な手段で行うことができる。 Inserted into the air-cooling / heating jacket provided on the outer circumference of the pressure vessel is a connecting spring wire in which a plurality of spring wires formed in the shape of a spring are spot-welded in parallel, and the attached matter removing means provided on the connecting spring wire According to the present invention for removing deposits in the jacket, the deposit removal operation in the jacket can be performed by simple means without fusing the jacket.
図１において、１はリアクターを構成するシェル本体、２はジャケットを示している。ジャケット２は、左右２カ所の上部ノズル３、４と、左右２カ所の下部ノズル５、６を備えている。 In FIG. 1, reference numeral 1 denotes a shell body constituting the reactor, and 2 denotes a jacket. The jacket 2 includes upper and lower nozzles 3 and 4 at two left and right positions, and lower nozzles 5 and 6 at two left and right positions.
本実施形態では、下部ノズル５、６から連結スプリングワイヤ７を挿入し、該連結スプリングワイヤ７に備えた付着物除去手段８によってジャケット内の付着物除去を行う。なお、シェル本体の下部（以下、下鏡部９という）には、シェル本体の焼成時に使用された脚部の残部等、障害物が存在するため、通常のワイヤブラシによる付着物除去作業は困難である。 In the present embodiment, the connecting spring wire 7 is inserted from the lower nozzles 5 and 6, and the deposit removing means 8 provided on the connecting spring wire 7 removes deposits in the jacket. In addition, since there are obstacles such as the remainder of the legs used when firing the shell body at the lower part of the shell body (hereinafter referred to as the lower mirror part 9), it is difficult to remove deposits with a normal wire brush. It is.
連結スプリングワイヤ７は、線径０．５〜４ｍｍ、外径１０〜３０ｍｍ、内径５〜２９ｍｍのスプリング状のワイヤ（以下、スプリングワイヤという）を、図２に示すように、並列させて、長さ方向の複数個所で点溶接を行って連結させたものである。一方のスプリングワイヤの先端には高圧洗浄ノズル１１を備え、他方のスプリングワイヤの先端には内視鏡１２を備えている。作業者は、内視鏡でとらえた内部の様子を確かめながら作業を行うことができる。 As shown in FIG. 2, the connecting spring wire 7 is formed by arranging a spring-like wire having a wire diameter of 0.5 to 4 mm, an outer diameter of 10 to 30 mm, and an inner diameter of 5 to 29 mm. They are connected by spot welding at a plurality of locations in the vertical direction. A high pressure cleaning nozzle 11 is provided at the tip of one spring wire, and an endoscope 12 is provided at the tip of the other spring wire. The worker can work while confirming the internal state captured by the endoscope.
連結スプリングワイヤ７の操作は、作業者が連結スプリングワイヤの後端部を握って行われ、下部ノズル５、６から連結スプリングワイヤ７を挿入すると、連結スプリングワイヤ７の先端は、まず、下鏡部９に当たる。ここで、更に押し込むと、先端部が下鏡部９に沿うように略９０°屈曲し、その後、下鏡部９に沿って真っ直ぐにジャケット内を進行していく。進行方向の転換は、連結スプリングワイヤの後端部を捻じって行うことができる。 The operation of the connection spring wire 7 is performed by an operator holding the rear end portion of the connection spring wire. When the connection spring wire 7 is inserted from the lower nozzles 5 and 6, the tip of the connection spring wire 7 is first moved to the lower mirror. Hit part 9. Here, when further pushed in, the tip part bends approximately 90 ° along the lower mirror part 9, and then advances straight in the jacket along the lower mirror part 9. The direction of travel can be changed by twisting the rear end of the connecting spring wire.
スプリングワイヤを単独で用いたり、あるいは、複数本並列させたスプリングワイヤを針金や紐等で固定したものでは、僅かな力で、スプリングワイヤが前後左右に揺れ動いてしまい、スプリングワイヤを捻じってもスプリングワイヤ自体が捻じれるだけで、方向転換を行うことはできない。これに対し、スプリング状に成形したスプリングワイヤを複数本並列して点溶接した連結スプリングワイヤを用いる本発明によれば、隣のスプリングワイヤ方向へは曲がりにくくなり、スプリングワイヤの動きが規制されるため、スプリングワイヤの操作性を格段に向上させることができる。 If a spring wire is used alone or a plurality of parallel spring wires are fixed with a wire or string, the spring wire will swing back and forth and left and right with a slight force. Only the spring wire itself is twisted, and the direction cannot be changed. On the other hand, according to the present invention using the connection spring wire in which a plurality of spring wires formed in a spring shape are spot welded in parallel, it is difficult to bend in the direction of the adjacent spring wire, and the movement of the spring wire is restricted. Therefore, the operability of the spring wire can be significantly improved.
下部ノズル５、６から連結スプリングワイヤ７を挿入して、該連結スプリングワイヤ７に備えた付着物除去手段８によってジャケット内の付着物除去を行う際には、図１に示すように、下部ノズル５、６の下部を、作業用手袋の挿入孔を上部に備えた透明塩ビシートで下端部を開閉可能としたグローバッグ１０で覆いながら操作を行うことで、作業中に下部ノズル５、６から排出される付着物の飛散による周囲の汚染を回避することができる。 When the connecting spring wire 7 is inserted from the lower nozzles 5 and 6 and the deposit removing means 8 provided on the connecting spring wire 7 is used to remove deposits in the jacket, as shown in FIG. By operating while covering the lower part of 5 and 6 with a glow bag 10 whose upper end can be opened and closed with a transparent PVC sheet having a work glove insertion hole at the upper part, It is possible to avoid contamination of the surroundings due to scattering of the deposits to be discharged.
１ シェル本体
２ ジャケット
３、４ 上部ノズル
５、６ 下部ノズル
７ 連結スプリングワイヤ
８ 付着物除去手段
９ 下鏡部
１０ グローバッグ
１１ 高圧洗浄ノズル
１２ 内視鏡
DESCRIPTION OF SYMBOLS 1 Shell main body 2 Jacket 3, 4 Upper nozzle 5, 6 Lower nozzle 7 Connection spring wire 8 Adhering substance removal means 9 Lower mirror part 10 Glow bag 11 High-pressure washing nozzle 12 Endoscope
Claims (3)
該ワイヤが、スプリング状に成形したスプリングワイヤを複数本並列して点溶接した連結スプリングワイヤであることを特徴とするジャケット内付着物除去方法。 A jacket deposit removal method for removing deposits in a jacket by inserting a wire equipped with deposit removal means from a nozzle of an air-cooling / heating jacket provided on the outer periphery of the pressure vessel,
A method for removing deposits in a jacket, characterized in that the wire is a connecting spring wire in which a plurality of spring wires formed in a spring shape are spot welded in parallel.
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| JP2012240070A JP5830783B2 (en) | 2012-10-31 | 2012-10-31 | Method for removing deposits in jacket and deposit removal apparatus in jacket |
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| JP2012240070A JP5830783B2 (en) | 2012-10-31 | 2012-10-31 | Method for removing deposits in jacket and deposit removal apparatus in jacket |
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| JP2014087758A JP2014087758A (en) | 2014-05-15 |
| JP5830783B2 true JP5830783B2 (en) | 2015-12-09 |
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| JP6102028B2 (en) * | 2013-08-29 | 2017-03-29 | 日本碍子株式会社 | Method and apparatus for discharging deposits from inside jacket |
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| JPS5639779Y2 (en) * | 1978-02-27 | 1981-09-17 | ||
| JPH02110728U (en) * | 1989-02-21 | 1990-09-05 | ||
| JPH0657439U (en) * | 1993-01-14 | 1994-08-09 | 株式会社スギノマシン | High pressure water cleaning nozzle device |
| JP3811921B2 (en) * | 2003-08-12 | 2006-08-23 | 川崎建設株式会社 | Cleaning device for small-diameter pipes with direction control and endoscopic functions |
| JP2005152782A (en) * | 2003-11-26 | 2005-06-16 | Noritekku:Kk | Cleaning method of tank inside |
| US7922650B2 (en) * | 2004-03-23 | 2011-04-12 | Boston Scientific Scimed, Inc. | Medical visualization system with endoscope and mounted catheter |
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