JPH01127899A - Removing device for product adhered on heat transfer pipe surface - Google Patents
Removing device for product adhered on heat transfer pipe surfaceInfo
- Publication number
- JPH01127899A JPH01127899A JP62282955A JP28295587A JPH01127899A JP H01127899 A JPH01127899 A JP H01127899A JP 62282955 A JP62282955 A JP 62282955A JP 28295587 A JP28295587 A JP 28295587A JP H01127899 A JPH01127899 A JP H01127899A
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- vibrator
- adhered
- heat transfer
- vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012546 transfer Methods 0.000 title abstract description 15
- 238000000034 method Methods 0.000 abstract description 10
- 230000005284 excitation Effects 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/023—Cleaning the external surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
- B08B7/026—Using sound waves
- B08B7/028—Using ultrasounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2209/00—Details of machines or methods for cleaning hollow articles
- B08B2209/005—Use of ultrasonics or cavitation, e.g. as primary or secondary action
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は燃焼装置の保守点検装置に係り、特に伝熱管の
付着生成物を効率良く除去するのに適した伝熱管表面付
着生成物除去装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a maintenance and inspection device for combustion equipment, and in particular to a heat transfer tube surface adhesion product removal device suitable for efficiently removing adhesion products on heat transfer tubes. Regarding.
火力プラント等の伝熱管群で構成された熱交換゛ 器を
有するシステムにおいては、熱交換器の熱交換効率の維
持及び伝熱管の損傷有無点検等のために伝熱管群表面に
付着した生成物を、システム運転停止中に除去する必要
が生じている。In a system that has a heat exchanger composed of a group of heat transfer tubes such as a thermal power plant, products attached to the surface of the heat transfer tube group are used to maintain the heat exchange efficiency of the heat exchanger and check for damage to the heat transfer tubes. need to be removed during system shutdown.
従来、付着生成物の除去のためには、グラインダー、回
転メタルブラシ等の電動工具を用いて付着生成物を機械
的に削り落とす手法あるいはノ１ンマーによって叩き落
とす手法が一般に実施されていた。Conventionally, in order to remove the adhered products, a method of mechanically scraping off the adhered products using a power tool such as a grinder or a rotating metal brush, or a method of knocking them off with a hammer has generally been carried out.
しかし上記従来法では、工具の摩耗、めづまり等の工具
サイドの問題点と、除去量を常時モニタしながら作業し
ないと伝熱管表面に削りキズ等の損傷を与えると云う問
題点があった。However, the conventional method described above has problems on the tool side such as tool wear and clogging, and damage such as scratches on the surface of the heat exchanger tube unless the removal amount is constantly monitored.
また伝熱管表面付着生成物の組成、性状（形状。Also, the composition and properties (shape) of products attached to the heat exchanger tube surface.
密度、付着強度、水分含有率等）は、伝熱管配置個所の
ガス温度、ガス流れ、ガス組成等により変化するため、
同一仕様の工具（例えばグラインダーの砥石番数が同じ
）で全ての伝熱管表面に対処することは困難であり、複
数の工具（例えば番数の異なる砥石）を準備する必要が
あると云う問題点があった。(density, adhesion strength, moisture content, etc.) vary depending on the gas temperature, gas flow, gas composition, etc. at the location where the heat transfer tube is placed.
The problem is that it is difficult to treat all heat exchanger tube surfaces with a tool of the same specification (for example, a grinder with the same number of grinding wheels), and it is necessary to prepare multiple tools (for example, grinding wheels with different numbers). was there.
上述の従来法の問題点は付着生成物の除去を人手によっ
て実施する場合について述べているが、この作業を自動
化する場合にも、従来の工具を使用する限りにおいては
同様に問題点となる。Although the above-mentioned problems with the conventional method are described in the case where the removal of adhered products is carried out manually, the same problems arise even when this work is automated, as long as conventional tools are used.
上記工具の他に現在使用されているもの、あるいは考え
られているものとしては、次の様なものがある。蒸気・
空気・水の高速流による打撃、加振器による振るい落と
し、膨張剤注入による亀裂生成等。これらの手法はいず
れも工具の複雑化。In addition to the tools mentioned above, the following tools are currently in use or are being considered. vapor·
Impact by high-speed air/water flow, shaking off by vibrator, crack formation by injection of expansion agent, etc. Both of these methods increase the complexity of the tools.
使用動力の増大、除去工程の複雑化を招く欠点があった
。This has the disadvantage of increasing the power used and complicating the removal process.
上記従来技術は、伝熱管表面付着生成物を単に機械的な
衝撃力で破壊する観点に立っており、小さい力（エネル
ギー）で有効に付着生成物を破壊すると云う配慮がされ
ておらず、伝熱管自体に損傷を与えたりする問題があっ
た。The above-mentioned conventional technology is based on the viewpoint of simply destroying the adhered products on the surface of the heat exchanger tube by mechanical impact force, and does not take into consideration that the adhered products can be effectively destroyed with a small force (energy). There was a problem that the heat tube itself could be damaged.
本発明の目的は、伝熱管自体に損傷を与えることなく、
小さい力で効率的に伝熱管表面付着生成物を除去する除
去装置を提供することにある。The purpose of the present invention is to
It is an object of the present invention to provide a removal device that efficiently removes products adhering to the surface of a heat exchanger tube with a small force.
上記目的は、超音波振動子を工具として使い、超音波の
周波数と、超音波振動子の形状を選択することにより、
伝熱管（金属）とは異なる超音波伝播特性（特に吸収率
）を有する表面付着生成物に超音波振動を与え、伝熱管
と表面付着生成物界面の剥離を促進させることにより達
成される。The above purpose is achieved by using an ultrasonic vibrator as a tool and selecting the ultrasonic frequency and the shape of the ultrasonic vibrator.
This is achieved by applying ultrasonic vibration to the surface-adhered product, which has different ultrasonic propagation characteristics (particularly absorption rate) than those of the heat exchanger tube (metal), and promoting separation of the interface between the heat exchanger tube and the surface-adhered product.
超音波振動子は電磁気エネルギーをひずみ（振動）に変
換する素子で、電界によりひずみを与える電歪型と、磁
界によりひずみを与える磁歪型の２種類がある。上記目
的の様にある程度大きい振動エネルギーを得る必要があ
る場合には、一般には超音波加工装置に適用されている
様にフェライト等を用いた磁歪型超音波振動子が通して
いる。Ultrasonic vibrators are elements that convert electromagnetic energy into strain (vibration), and there are two types: an electrostrictive type that applies strain using an electric field, and a magnetostrictive type that applies strain using a magnetic field. When it is necessary to obtain a certain amount of vibrational energy as in the above-mentioned purpose, a magnetostrictive ultrasonic vibrator using ferrite or the like is generally used, as is applied to ultrasonic machining equipment.
磁歪型超音波振動子の振動面に接着等で取り付けた金属
製の導波ホーンにより、振動を導き、導波ホーンを表面
付着生成物に接触させることにより、振動を表面付着生
成物に与える。伝熱管の超音波振動特性と、付着生成物
の超音波振動特性は組成が違うため異なるので、その両
者の界面に振動の位相差等が生じ易くなり、付着生成物
の伝熱管から部分的な剥離が生じ易くなる。いったん剥
離が生じると、超音波振動の伝熱管への伝播はほとんど
無視できる様になる（界面に空気層を生じるため減衰が
増大する）ため、伝熱管へ損傷を与えることはない。ま
た部分的に剥離した近辺では振動の不連続性が増大し、
剥離の拡大と、付着生成物内部での亀裂が促進され、付
着生成物の効果的な除去が可能になる。Vibration is guided by a metal waveguide horn attached to the vibrating surface of the magnetostrictive ultrasonic transducer by adhesive or the like, and the waveguide horn is brought into contact with the product adhering to the surface, thereby applying the vibration to the product adhering to the surface. The ultrasonic vibration characteristics of the heat exchanger tube and the ultrasonic vibration characteristics of the adhered products are different due to their different compositions, so a phase difference in vibration is likely to occur at the interface between the two, resulting in partial separation of the adhered products from the heat exchanger tube. Peeling is likely to occur. Once separation occurs, the propagation of ultrasonic vibrations to the heat exchanger tube becomes almost negligible (attenuation increases due to the creation of an air layer at the interface), so no damage is caused to the heat exchanger tube. In addition, vibration discontinuity increases in the vicinity of partial separation,
Expansion of delamination and cracking within the deposited product is promoted, allowing effective removal of the deposited product.
第４図に事業用ボイラの伝熱管配置例を示す。 Figure 4 shows an example of heat exchanger tube arrangement for a commercial boiler.
伝熱管を大別すると、火炉内壁を構成するいわゆる氷壁
管１）．高温ガス流にさらされるコイル状伝熱管１２．
低温ガス流にさらされるコイル状伝熱管１３等がある。Heat exchanger tubes can be roughly divided into so-called ice wall tubes that make up the inner wall of the furnace 1). Coiled heat transfer tube exposed to hot gas flow 12.
There are coiled heat exchanger tubes 13 and the like that are exposed to the low temperature gas flow.
これら各種伝熱管の損傷（亀裂発生とか伝熱管々肉厚の
減少等）を、ボイラ停止時に点検する場合について以下
に説明する。A case in which damage to these various heat exchanger tubes (such as occurrence of cracks or reduction in the thickness of heat exchanger tubes) is inspected when the boiler is stopped will be described below.
これら伝熱管の損傷点検法としては、伝熱管内側に超音
波探傷子を挿入して検査する方法、伝熱管外側から表面
付着生成物を除去しないで検査する方法等が開発中であ
るが、まだ広く使用される段階には到っていない。As methods for inspecting heat exchanger tubes for damage, methods are currently under development, such as a method of inspecting by inserting an ultrasonic flaw detector inside the tube, and a method of inspecting without removing surface adhesion products from the outside of the tube. It has not yet reached the stage of widespread use.
従って通常は火炉内に足場を組み、伝熱管外側から表面
付着生成物を機械的に削り落とし、超音波探傷子が伝熱
管表面に十分接触面積を有する様に研磨して、超音波探
傷を実施している。Therefore, usually a scaffold is set up inside the furnace, the surface adhesion products are mechanically scraped off from the outside of the heat transfer tube, and the ultrasonic flaw detector is polished so that it has a sufficient contact area with the heat transfer tube surface to perform ultrasonic flaw detection. are doing.
第１図に本発明になる磁歪振動子を工具として用いた場
合の伝熱管表面付着生成物の除去装置の構成例を示す。FIG. 1 shows an example of the configuration of a device for removing products adhering to the surface of a heat exchanger tube when the magnetostrictive vibrator of the present invention is used as a tool.
磁歪振動子（例えばフェライト）３に巻かれた励磁用コ
イル４に周波数可変発振器６で発生させた電気信号を、
電力増幅器５で増幅後印加する。An electric signal generated by a variable frequency oscillator 6 is sent to an excitation coil 4 wound around a magnetostrictive vibrator (for example, ferrite) 3.
It is applied after being amplified by the power amplifier 5.
励磁用コイル４によって磁歪振動子３は発振器６の周波
数を基本周波数として振動する（通常超音波加工等で用
いる周波数は約２０ＫＨｚ程度である）。The excitation coil 4 causes the magnetostrictive vibrator 3 to vibrate using the frequency of the oscillator 6 as a fundamental frequency (the frequency normally used in ultrasonic processing is about 20 KHz).
磁歪振動子３の代表的形状例を第３図に示す。磁歪振動
子のフェライト３に励磁用コイル４が巻かれており、振
動方向に振動面８を有している。−般にはこの振動面８
が振動の腹（振動の振幅変化が最大になる部分）になる
様に形状を決める。A typical example of the shape of the magnetostrictive vibrator 3 is shown in FIG. An excitation coil 4 is wound around a ferrite 3 of a magnetostrictive vibrator, and has a vibration surface 8 in the vibration direction. -Generally, this vibration surface 8
The shape is determined so that is the antinode of vibration (the part where the amplitude change of vibration is maximum).
第１図において磁歪振動子３の振動面に接着された金属
製の超音波ホーン２は磁歪振動子３の振動を与える対象
物、この場合には伝熱管ｌに伝える役割をする。超音波
ホーン２の先端形状は対象物の形状及び振動によって実
施する作業内容によ°つて適切に選択する。第２図の円
錐状ホーンの場合にはホーン先端での振動パワー密度を
向上させる利点がある。超音波ホーン２と伝熱管表面付
着生成物７とが接触すると、付着生成物７の表面は一般
には凹凸状態であるので、凸部に振動パワーが集中し、
凸部を粉砕する。粉砕された凸部の一部は超音波ホーン
２先端部と付着生成部表面間に介在し、可動粒子として
一種の研磨剤の役割を果し、付着生成物表面の凹凸状態
を平滑化し、超音波ホーン２と接触性が向上する。この
状態に達すると振動パワーの付着生成物への伝達が向上
し、付着生成物７及び伝熱管ｌが超音波振動をする様に
なる。この様に異質の２つの層（付着生成物層と金属Ｎ
）が超音波振動を受けると、２つの屡の界面での振動変
位に不連続性が生じ、２つの層に剥離が生じ易くなる。In FIG. 1, a metal ultrasonic horn 2 bonded to the vibrating surface of the magnetostrictive vibrator 3 serves to transmit the vibration of the magnetostrictive vibrator 3 to an object, in this case, a heat exchanger tube l. The shape of the tip of the ultrasonic horn 2 is appropriately selected depending on the shape of the object and the content of the work to be performed using vibration. The conical horn shown in FIG. 2 has the advantage of improving the vibration power density at the tip of the horn. When the ultrasonic horn 2 and the product 7 attached to the surface of the heat transfer tube come into contact, the surface of the product 7 is generally uneven, so vibration power is concentrated on the convex portions.
Crush the convex part. A part of the crushed convex part is interposed between the tip of the ultrasonic horn 2 and the surface of the adhesion generating part, and plays the role of a kind of abrasive as a movable particle, smoothing the uneven state of the surface of the adhesion product, and Contact with the sonic horn 2 is improved. When this state is reached, the transmission of vibration power to the deposited product is improved, and the deposited product 7 and the heat exchanger tube 1 begin to vibrate ultrasonically. In this way, two different layers (adhesive product layer and metal N
) is subjected to ultrasonic vibration, a discontinuity occurs in the vibrational displacement at the interface between the two, making it easy for the two layers to separate.
いったん剥離が生ずると、剥離部での振動変位が増大す
るため（付着生成物の界面部が振動的には開放端となる
ため）、付着生成物の粉砕が促進され、除去される。特
に発振器６の電気信号を間けつ（パルス的）的に不連続
にすることにより、上記剥離、粉砕は促進される。Once peeling occurs, the vibrational displacement at the peeled part increases (because the interface of the adhered product becomes an open end in terms of vibration), thereby promoting the pulverization of the adhered product and removing it. In particular, by making the electrical signal of the oscillator 6 discontinuous (pulsed), the above-mentioned peeling and pulverization are promoted.
付着生成物が除去される領域は最低でも超音波ホーン２
の先端部面積になり、剥離部領域が広がる程除去領域も
広がる。伝熱管１の損傷を点検する目的のためには除去
領域は超音波探傷子の外径（大きくても約１インチ程度
）程度あれば十分であり、超音波ホーン２の先端面積の
選択により、超音波ホーン２を伝熱管１の軸方向に走査
せずに所要の除去領域を得ることが可能になる。The area where the deposited products are removed is at least ultrasonic horn 2.
The area of the tip end becomes , and the wider the area of the peeled part, the wider the area of removal. For the purpose of inspecting the heat exchanger tube 1 for damage, it is sufficient that the removal area is about the outer diameter of the ultrasonic flaw detector (approximately 1 inch at most), and by selecting the tip area of the ultrasonic horn 2, It becomes possible to obtain the required removal area without scanning the ultrasonic horn 2 in the axial direction of the heat exchanger tube 1.
付着生成物７を除去した伝熱管１表面は必ずしも超音波
探傷子を接触させるのに適した表面状態にはなっていな
いのが普通であるので、研磨する必要があるが、研磨作
業も本発明になる除去装置で実施できる。第１図の発振
器６の周波数を増加させ、電力増幅器５の出力を減少さ
せることにより対応できる。パイプ形状の伝熱管表面の
研磨を考慮すると、超音波ホーン２の先端形状は伝熱管
１の曲率に等しい曲率を有する様にする必要があり、又
伝熱管１周方向に多少走査し、研磨剤を供給することが
望ましい、又振動面９での振動方向を横方向（いわゆる
すべり振動）にした磁歪型超音波振動子を用いると研磨
性能が向上する。Normally, the surface of the heat exchanger tube 1 from which the adhesion products 7 have been removed is not necessarily in a surface condition suitable for contact with an ultrasonic flaw detector, so it is necessary to polish it, but the present invention also performs the polishing process. It can be carried out using the following removal equipment. This can be dealt with by increasing the frequency of the oscillator 6 in FIG. 1 and decreasing the output of the power amplifier 5. Considering polishing of the surface of a pipe-shaped heat exchanger tube, the tip shape of the ultrasonic horn 2 needs to have a curvature equal to the curvature of the heat exchanger tube 1, and the abrasive It is desirable to supply the same amount of vibration, and polishing performance is improved by using a magnetostrictive ultrasonic vibrator whose vibration direction on the vibrating surface 9 is transverse (so-called shear vibration).
付着生成物７の除去及び除去後の研磨のために、本発明
では周波数２０＝ｌＯＯＫＨｚ、超音波出力１０〜５０
Ｗを使用している。In order to remove the deposited product 7 and polish after removal, the present invention uses a frequency of 20=lOOKHz and an ultrasonic output of 10 to 50.
I am using W.
本実施例特有の効果は、磁歪振動子の方が電磁振動子に
比較して、振動パワーを太き（するのに適しており （
［気的に励振できるため、コイルに流す電流を増加する
ことにより励振パワーを大きく取ることができる。電歪
振動子では励振パワーを大きくするためには高電界を印
加する必要があり、励振パワーの増加が困難なため）、
従って除去に要する時間の短縮が図れる点である。また
周波数を２０〜１００ＫＨｚ程度にすることにより付着
生成物内での超音波振動の減衰を小さクシ（周波数を高
くすると減衰が大となり、超音波振動が付着生成物の表
面近くにしか伝わらず、除去の過程が剥離を利用したも
のではなく、表面から少しずつ粉砕していく状態となり
、除去時間が増加する。）付着生成物と金属製伝熱管界
面での剥離現象を促進することができ、除去時間が短縮
できる。The unique effect of this embodiment is that the magnetostrictive vibrator is more suitable for increasing the vibration power than the electromagnetic vibrator.
[Since it can be excited mechanically, the excitation power can be increased by increasing the current flowing through the coil. In order to increase the excitation power with an electrostrictive resonator, it is necessary to apply a high electric field, making it difficult to increase the excitation power).
Therefore, the time required for removal can be shortened. In addition, by setting the frequency to about 20 to 100 KHz, the attenuation of ultrasonic vibrations within the deposited product can be reduced (the higher the frequency, the greater the attenuation, and the ultrasonic vibrations are only transmitted near the surface of the deposited product, (The removal process does not use peeling, but instead grinds the material little by little from the surface, increasing the removal time.) It can promote the peeling phenomenon at the interface between the adhered products and the metal heat exchanger tube. Removal time can be shortened.
伝熱管に付着する生成物としては、主に不純物の局部濃
縮による管内付着生成物と、主に燃焼灰による管外付着
生成物とがある。この管内付着物と管外付着物は硬度が
異なり、また管外付着物でも燃料が石炭の場合には比較
的硬い付着物となり、燃料が石油の場合には比較的軟い
付着物となる。The products that adhere to the heat transfer tubes include those that adhere to the inside of the tubes, which are mainly caused by local concentration of impurities, and those that adhere to the outside of the tubes, which are mainly caused by combustion ash. The hardness of the deposits inside the pipe and the deposits outside the pipe are different, and even the deposits outside the pipe are relatively hard deposits when the fuel is coal, and relatively soft deposits when the fuel is petroleum.
そのため、除去しようとする付着生成物の硬度によって
周波数が変更できるようになっておれば便利である。Therefore, it would be convenient if the frequency could be changed depending on the hardness of the adhered product to be removed.
本発明によれば、超音波振動をｆｉｌ用しているので、
伝熱管表面の付着生成物と伝熱管界面に剥離を生じ易く
、伝熱管本体表面に損傷を与えることな（、かつ速かに
付着生成物を除去できる効果がある。また工具を交換す
ることなく、付着生成物の除去と、除去後の伝熱管本体
表面の研磨の両作業を共に実施できる利点があり、作業
性の改善効果がある。これらの効果は今後の除去、研磨
作業の自動化に際しても有効である。According to the present invention, since ultrasonic vibration is used for fil,
It is easy to cause peeling between the adhered products on the heat exchanger tube surface and the heat exchanger tube interface, and it is effective in quickly removing the adhered products without damaging the heat exchanger tube body surface.Also, without changing tools. , it has the advantage of being able to perform both the removal of adhering products and polishing the surface of the heat exchanger tube body after removal, and has the effect of improving workability.These effects will also be useful when automating the removal and polishing operations in the future. It is valid.
第１図は本発明になる超音波振動子を利用した伝熱管表
面付着生成物除去装置の一実施例を示す゛装置構成図、
第２図は超音波振動子と伝熱管表面付着生成物との位置
関係を示す図、第３図は磁歪型超音波振動子の一構造例
を示す図、第４図は事業用ボイラの各種伝熱管の配置例
を示す図である。
１・・・伝熱管、２・・・超音波ホーン、３・・・磁歪
振動子、４・・・励磁コイル、６・・・発振器、８・・
・振動面。
第１図
第２図FIG. 1 is an apparatus configuration diagram showing an embodiment of an apparatus for removing products attached to the surface of a heat exchanger tube using an ultrasonic vibrator according to the present invention.
Figure 2 is a diagram showing the positional relationship between the ultrasonic vibrator and the products attached to the heat exchanger tube surface, Figure 3 is a diagram showing an example of the structure of a magnetostrictive ultrasonic vibrator, and Figure 4 is a diagram showing various types of commercial boilers. It is a figure which shows the example of arrangement|positioning of a heat exchanger tube. DESCRIPTION OF SYMBOLS 1... Heat exchanger tube, 2... Ultrasonic horn, 3... Magnetostrictive vibrator, 4... Excitation coil, 6... Oscillator, 8...
・Vibration surface. Figure 1 Figure 2
Claims (2)
源により機械的に除去する装置において、前記可動工具
を超音波振動子としたことを特徴とする伝熱管表面付着
生成物除去装置。(1) An apparatus for mechanically removing deposits adhering to the surface of a heat exchanger tube using a movable tool and a drive source, characterized in that the movable tool is an ultrasonic vibrator.
生成物除去装置において、前記超音波振動子が磁歪振動
子であることを特徴とする伝熱管付着生成物除去装置。(2) The device for removing products adhering to a heat exchanger tube surface as set forth in claim (1), wherein the ultrasonic vibrator is a magnetostrictive vibrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62282955A JP2654385B2 (en) | 1987-11-11 | 1987-11-11 | Heat transfer tube surface adhered product removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62282955A JP2654385B2 (en) | 1987-11-11 | 1987-11-11 | Heat transfer tube surface adhered product removal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01127899A true JPH01127899A (en) | 1989-05-19 |
| JP2654385B2 JP2654385B2 (en) | 1997-09-17 |
Family
ID=17659285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62282955A Expired - Fee Related JP2654385B2 (en) | 1987-11-11 | 1987-11-11 | Heat transfer tube surface adhered product removal device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2654385B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0961090A (en) * | 1995-08-25 | 1997-03-07 | Babcock Hitachi Kk | Cleaning device of tube body |
| KR100764819B1 (en) * | 2005-06-17 | 2007-10-08 | 주식회사 몰코 | ultrasonic generator for excluding and preventing a different thing in explosive region |
| KR100918344B1 (en) * | 2007-08-31 | 2009-09-22 | 한국원자력연구원 | Outlet pipe system of steam generator of fast reactor to transfer easily the molten sodium with the sodium hydroxides |
| CN109731859A (en) * | 2019-01-11 | 2019-05-10 | 湖州胜纯管道有限公司 | A kind of stainless steel pipe cleaning method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102052879B (en) * | 2011-01-21 | 2012-09-12 | 洛阳万山高新技术应用工程有限公司 | Intelligent online self-cleaning scale-free operating energy-saving device of heat exchanging equipment |
| CN103567195B (en) * | 2012-07-26 | 2015-11-18 | 中国石油天然气股份有限公司 | The anticorrosion quick stripping off device of induction pipeline 3PE |
| JP7064078B2 (en) * | 2018-02-08 | 2022-05-10 | 三菱重工業株式会社 | Combustion furnace ash deposit control condition determination device, combustion system, and ash adhesion control condition determination method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52132046A (en) * | 1976-04-28 | 1977-11-05 | Shigenobu Fujimoto | Patinted surface finishign tool |
-
1987
- 1987-11-11 JP JP62282955A patent/JP2654385B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52132046A (en) * | 1976-04-28 | 1977-11-05 | Shigenobu Fujimoto | Patinted surface finishign tool |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0961090A (en) * | 1995-08-25 | 1997-03-07 | Babcock Hitachi Kk | Cleaning device of tube body |
| KR100764819B1 (en) * | 2005-06-17 | 2007-10-08 | 주식회사 몰코 | ultrasonic generator for excluding and preventing a different thing in explosive region |
| KR100918344B1 (en) * | 2007-08-31 | 2009-09-22 | 한국원자력연구원 | Outlet pipe system of steam generator of fast reactor to transfer easily the molten sodium with the sodium hydroxides |
| CN109731859A (en) * | 2019-01-11 | 2019-05-10 | 湖州胜纯管道有限公司 | A kind of stainless steel pipe cleaning method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2654385B2 (en) | 1997-09-17 |
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