JP2006161582A - Orifice box with device for collecting minute foreign matter contained in lubricating oil - Google Patents

Orifice box with device for collecting minute foreign matter contained in lubricating oil Download PDF

Info

Publication number
JP2006161582A
JP2006161582A JP2004350511A JP2004350511A JP2006161582A JP 2006161582 A JP2006161582 A JP 2006161582A JP 2004350511 A JP2004350511 A JP 2004350511A JP 2004350511 A JP2004350511 A JP 2004350511A JP 2006161582 A JP2006161582 A JP 2006161582A
Authority
JP
Japan
Prior art keywords
foreign matter
lubricating oil
minute foreign
casing
minute
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.)
Pending
Application number
JP2004350511A
Other languages
Japanese (ja)
Inventor
Kazuhiro Yumino
和宏 弓野
Hideyuki Yasu
英行 安
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Engineering and Services Co Ltd
Original Assignee
Hitachi Engineering and Services Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Engineering and Services Co Ltd filed Critical Hitachi Engineering and Services Co Ltd
Priority to JP2004350511A priority Critical patent/JP2006161582A/en
Publication of JP2006161582A publication Critical patent/JP2006161582A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Filtration Of Liquid (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an orifice box with device for collecting micro foreign matter (mainly iron powder) contained in lubricating oil for a bearing part of a steam turbine, and taking out the micro foreign matter which has been accumulated on an attracting surface of a magnet by means of other micro foreign matter collecting device without stopping the supply of the lubricating oil to the bearing part. <P>SOLUTION: A device for collecting minute foreign matter 9 comprises: a permanent magnet with coating attracting minute foreign matter contained in the lubricating oil by a magnetic force; a bottom plate made of reinforced transparent material adsorbing the minute foreign matter; a basket adsorbing the minute foreign matter; and a plug incorporating these parts. At least two out of the minute foreign matter collecting devices 9 are installed to a body 4 of a casing, one minute foreign matter collecting device 9 is installed at a position opposed to a lubricating oil inlet pipe 5, and the other minute foreign matter collecting device 9 is installed at a lower position of the body of the casing. A device 14 for taking out the fine foreign matter, which is constituted of a suction fine tube having one end opening to face the bottom plate, a filter 17 for adsorbing the foreign matter, miniature valves 16, 18, and tubing 19 guiding the sucked lubricating oil to an oil discharge tube, is installed to each minute foreign matter collecting device 9. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、蒸気タービンの軸受部に潤滑油を供給する潤滑油供給管に取付けられているオリフィスボックスに係わり、特に、潤滑油に含まれている極小異物（主に鉄粉）効果的に回収でき、さらに、回収し磁石吸着面に堆積した極小異物を、軸受部への潤滑油の供給を停止しせず安全に、外部へ取り出すことの出来る極小異物回収装置付オリフィスボックスに係わる。   The present invention relates to an orifice box attached to a lubricating oil supply pipe that supplies lubricating oil to a bearing portion of a steam turbine, and in particular, effectively collects very small foreign matters (mainly iron powder) contained in the lubricating oil. Further, the present invention relates to an orifice box with a minimal foreign matter collection device that can collect and collect the minimal foreign matter deposited on the magnet attracting surface safely without stopping the supply of lubricating oil to the bearing portion.

図６は蒸気タービン軸受潤滑油供給系の一例を示した概略系統図である。油タンク２１内の潤滑油は軸受油ポンプ２２により加圧され潤滑油供給管２３を経てタービン軸受２４に供給される。タービン軸受２４からの潤滑油は戻り油管２５を通り再び油タンク２１に回収される。   FIG. 6 is a schematic system diagram showing an example of a steam turbine bearing lubricating oil supply system. The lubricating oil in the oil tank 21 is pressurized by the bearing oil pump 22 and supplied to the turbine bearing 24 through the lubricating oil supply pipe 23. Lubricating oil from the turbine bearing 24 passes through the return oil pipe 25 and is again collected in the oil tank 21.

軸受油ポンプ２２とタービン軸受２４の間の潤滑油供給管２３にはオリフィスボックス１が設置され、また、オリフィスボックス１の上流側の潤滑油供給管２３には圧力センサ２６が設置されている。軸受油ポンプ２２は圧力センサ２６の指示値が一定に保たれるように制御される。これにより、オリフィスボックス１内に設けられたオリフィスの上流側の潤滑油圧力が一定値となり。タービン軸受２４に流入する潤滑油流量が一定になるように制御される。   An orifice box 1 is installed in the lubricating oil supply pipe 23 between the bearing oil pump 22 and the turbine bearing 24, and a pressure sensor 26 is installed in the lubricating oil supply pipe 23 upstream of the orifice box 1. The bearing oil pump 22 is controlled so that the indicated value of the pressure sensor 26 is kept constant. Thereby, the lubricating oil pressure upstream of the orifice provided in the orifice box 1 becomes a constant value. The flow rate of the lubricating oil flowing into the turbine bearing 24 is controlled to be constant.

蒸気タービン潤滑油システム内の油清浄設備により油タンク１１内の潤滑油内に混入している異物を除去しても、油タンク２１からオリフィスボックス１までの潤滑油供給管の長さが長いため、配管内部の微小剥離錆金属片が潤滑油に絶えず混入している。潤滑油中に異物が混入すると、タービン軸受に異物が流入し軸受メタルを破損するおそれがある。オリフィスボックス１内のオリフィスの上流側には、打抜ストレーナが設置されている。この打抜ストレーナは整流作用が主な役目であり、圧力損失の増大を回避するため目を粗くしなければならない。したがって、打抜ストレーナでは、潤滑油中の大きな異物しか除去できない。   Even if foreign matter mixed in the lubricating oil in the oil tank 11 is removed by the oil cleaning equipment in the steam turbine lubricating oil system, the length of the lubricating oil supply pipe from the oil tank 21 to the orifice box 1 is long. , The fine peeling rust metal pieces inside the pipe are constantly mixed in the lubricating oil. If foreign matter is mixed in the lubricating oil, foreign matter may flow into the turbine bearing and damage the bearing metal. A punching strainer is installed on the upstream side of the orifice in the orifice box 1. This punching strainer is mainly responsible for the rectifying action, and must be rough to avoid an increase in pressure loss. Therefore, the punch strainer can remove only large foreign matters in the lubricating oil.

油中に混入している微小な異物（鉄粉）を除去する鉄粉吸着フィルタが特許文献１に開示されている。この鉄粉吸着フィルタのケーシング内に乱流発生板を設け、その下流に永久磁石板を設置して油中の鉄粉をこの磁石板に吸着させることにより油中の鉄粉を除去している。   Patent Document 1 discloses an iron powder adsorption filter that removes minute foreign matters (iron powder) mixed in oil. A turbulent flow generation plate is provided in the casing of the iron powder adsorption filter, and a permanent magnet plate is installed downstream of the turbulent flow generation plate to adsorb the iron powder in the oil to the magnet plate to remove the iron powder in the oil. .

油圧プレスなどの機械作動機構部に使われる潤滑油中に混入している鉄粉を永久磁石または電磁石により吸着することにより潤滑油中の鉄粉汚濁を検知する方法が特許文献２に開示されている。潤滑油の流れに曝されている磁石と金属ケーシングの間に絶縁体を介在させ、潤滑油中の鉄粉をこの絶縁体の表面に堆積させることにより磁石と金属ケーシングの間を電気的に導通させて潤滑油中の鉄粉汚濁度を検知する方法および検知センサを提案している。   Patent Document 2 discloses a method for detecting iron powder contamination in lubricating oil by adsorbing iron powder mixed in lubricating oil used in a machine operating mechanism such as a hydraulic press with a permanent magnet or an electromagnet. Yes. An insulator is interposed between the magnet and the metal casing exposed to the lubricant flow, and iron powder in the lubricant is deposited on the surface of the insulator to electrically connect the magnet and the metal casing. And a method and a detection sensor for detecting iron powder contamination in lubricating oil.

特開平５−３２９３１１号公報JP-A-5-329311 特開平７−２８０１８０号公報JP 7-280180 A

火力発電所などの蒸気タービンは昼夜連続して何ヶ月と言う長期間亘って運転する必要があるため、蒸気タービンの運転中に軸受の潤滑に支障をきたさないようにして、オリフィスボックス内に回収された極小異物を安全に外部に取り出す必要がある。しかし、特許文献１（特開平５−３２９３１１）および特許文献２（特開平７−２８０１８０）のいずれにも、磁石に吸着・堆積した鉄粉を外部へ取り出す方法または装置については記載されていない。   Steam turbines, such as thermal power plants, need to be operated for many months, day or night, so that they are collected in the orifice box without disturbing the lubrication of the bearings during steam turbine operation. It is necessary to safely take out the extremely small foreign matter. However, neither Patent Document 1 (Japanese Patent Laid-Open No. 5-329311) nor Patent Document 2 (Japanese Patent Laid-Open No. 7-280180) describes a method or apparatus for taking out iron powder adsorbed and deposited on a magnet to the outside.

本発明は上述した従来技術の問題に鑑みなされたもので、本発明は蒸気タービンの軸受部に潤滑油を供給する潤滑油供給管の途中に取付けて、潤滑油に含まれている極小異物（主に鉄粉）を微小異物回収装置により効果的に回収でき、さらに、回収し磁石吸着面に堆積した極小異物を、軸受部への潤滑油の供給を停止しせず、かつ、他の微小異物回収装置により極小異物を回収しながら、外部へ取り出すことの出来る極小異物回収装置付オリフィスボックスを提供することを目的としている。   The present invention has been made in view of the above-described problems of the prior art, and the present invention is attached to the middle of a lubricating oil supply pipe for supplying lubricating oil to a bearing portion of a steam turbine. Iron powder) can be effectively collected by the fine foreign material recovery device, and the extra small foreign matter collected and deposited on the magnet adsorption surface can be recovered without stopping the supply of lubricating oil to the bearing. An object of the present invention is to provide an orifice box with a minimal foreign matter collecting device that can be taken out while collecting the minimal foreign matter with the foreign matter collecting device.

上述した課題を解決するために本発明の微小異物回収装置付オリフィスボックスは、一端が閉じられた円筒形のケーシングと、ケーシングの他端に備えられたタービン軸受への潤滑油を流出する潤滑油出口管と、ケーシングの胴のほぼ中央部に該ケーシングの中心軸に垂直に設置された軸受油ポンプからの潤滑油を導入する潤滑油入口管と、ケーシング内に設置され、一端が閉じられ他端がケーシングの潤滑油出口管内壁に接続され胴壁部に多数の貫通孔を有する円筒形の打抜きストレーナと、打抜きストレーナと潤滑油出口管との間に設置されタービン軸受への潤滑油流量を制御するためのオリフィスとを有するオリフィスボックスにおいて、潤滑油中に含まれている微小異物を磁力により吸引するための被覆付永久磁石、微小異物を吸着するための強化透明材料から成る底板、微小異物を吸着するための篭、およびこれらの部品を組み込むためのプラグからなる微小異物回収装置を少なくとも２基をケーシングの胴に設置し、微小異物回収装置の１基は潤滑油入口管の対向位置に設置され、他の１基はケーシングの胴の下側の位置に設置され、かつ、一端が底板に面して開口した吸引細管と、異物吸着用フィルタと、ミニチュアバルブ、および、吸引した潤滑油を排油管に導く細管系から成る微小異物外部取出し装置が各々の微小異物回収装置に設置されていることを特徴とする。   In order to solve the above-described problems, an orifice box with a minute foreign material recovery apparatus according to the present invention includes a cylindrical casing closed at one end and a lubricating oil that flows out to the turbine bearing provided at the other end of the casing. An outlet pipe, a lubricating oil inlet pipe for introducing lubricating oil from a bearing oil pump installed perpendicularly to the central axis of the casing at a substantially central portion of the casing body, and a one end closed and the other A cylindrical punched strainer whose end is connected to the inner wall of the lubricating oil outlet pipe of the casing and has a number of through holes in the barrel wall, and is installed between the punched strainer and the lubricating oil outlet pipe to reduce the lubricating oil flow rate to the turbine bearing. In an orifice box having an orifice for control, a coated permanent magnet for attracting minute foreign matter contained in lubricating oil by magnetic force, and attracting fine foreign matter At least two micro foreign matter collecting devices comprising a bottom plate made of a reinforced transparent material for forming a glass, a gutter for adsorbing micro foreign matter, and a plug for incorporating these parts are installed on the casing body. One of these is installed at a position opposite to the lubricating oil inlet pipe, the other one is installed at the lower position of the casing body, and one end of the suction capillary that opens toward the bottom plate, and for foreign matter adsorption A minute foreign matter external extraction device comprising a filter, a miniature valve, and a thin tube system that guides the sucked lubricating oil to the oil discharge pipe is installed in each minute foreign matter collection device.

上記の構成により、ケーシングの潤滑油入口管からケーシングとストレーナにより形成された環状流路室に流入した潤滑油中の異物は微小異物回収装置により微小な異物が除去される。これにより、オリフィスボックスの流動抵抗を増加させずに、微小異物を効果的に除去でき、タービン軸受の健全性を確保できる。   With the above configuration, the foreign matter in the lubricating oil flowing into the annular flow passage chamber formed by the casing and the strainer from the lubricating oil inlet pipe of the casing is removed by the fine foreign matter collecting device. As a result, minute foreign matters can be effectively removed without increasing the flow resistance of the orifice box, and the soundness of the turbine bearing can be ensured.

また、微小異物回収装置の底板が強化透明材料により構成されており、回収された微小異物の蓄積量が運転中に確認できる。さらに、軸受部への潤滑油の供給を停止しせず、かつ、他の微小異物回収装置により極小異物を回収しながら、微小異物回収装置に堆積した極小異物を微小異物外部取出し装置により外部へ取り出すことが出来る。これにより、蒸気タービンを昼夜連続して何ヶ月と言う長期間亘って安全に運転することが出来る。   Further, the bottom plate of the fine foreign matter collecting apparatus is made of a reinforced transparent material, and the amount of collected fine foreign matter can be confirmed during operation. Furthermore, the supply of lubricating oil to the bearing part is not stopped, and the extraneous foreign matter accumulated in the extraneous foreign matter collection device is removed to the outside by the extraneous foreign matter extraction device while the extraneous foreign matter collection device collects the extraneous foreign matter. You can take it out. As a result, the steam turbine can be safely operated over a long period of several months, day and night.

実施例によって発明を実施するための最良の形態について説明する。   The best mode for carrying out the invention will be described by way of examples.

以下、本発明の実施例を図１ないし図５を用いて説明する。   Embodiments of the present invention will be described below with reference to FIGS.

図１は本発明の一実施例による微小異物回収装置付オリフィスボックスの部分断面側面図である。図２は本発明の一実施例による微小異物回収装置付オリフィスボックスの断面平面図である。図３は本発明の一実施例による微小異物回収装置の斜視図である。図４は本発明の他の実施例による微小異物回収装置の断面側面図であり、強化透明材料により構成された底板を通して堆積した極小異物を観測できる様子を示したものである。図５は本発明の一実施例による微小異物回収装置付オリフィスボックスを潤滑油出口管方向から見た図であり（図１のＡ−Ａ矢視図）、特に、微小異物外部取出し装置の構成を示している。   FIG. 1 is a partial cross-sectional side view of an orifice box with a minute foreign material recovery device according to an embodiment of the present invention. FIG. 2 is a cross-sectional plan view of an orifice box with a minute foreign material recovery device according to an embodiment of the present invention. FIG. 3 is a perspective view of a minute foreign matter collecting apparatus according to an embodiment of the present invention. FIG. 4 is a cross-sectional side view of a minute foreign matter collecting apparatus according to another embodiment of the present invention, and shows a state in which minimal foreign matter deposited through a bottom plate made of a reinforced transparent material can be observed. FIG. 5 is a view of the orifice box with a minute foreign substance recovery device according to one embodiment of the present invention as viewed from the direction of the lubricating oil outlet pipe (indicated by the arrow AA in FIG. 1). Is shown.

図１、図２および図５に示したように、本発明の微小異物回収装置付オリフィスボックス１は、一端が閉じられた円筒形のケーシング２と、ケーシング２の他端に備えられたタービン軸受（図６の２４）への潤滑油を流出する潤滑油出口管３と、ケーシング２の胴４のほぼ中央部に該ケーシングの中心軸に垂直に設置された軸受油ポンプ（図６の２２）からの潤滑油を導入する潤滑油入口管５と、ケーシング内に設置され、一端が閉じられ他端がケーシング２の潤滑油出口管３内壁に接続され胴壁部に多数の貫通孔を有する円筒形の打抜きストレーナ６と、打抜きストレーナ６と潤滑油出口管３との間に設置されタービン軸受への潤滑油流量を制御するためのオリフィス７とを有する。ケーシング２の胴４の内壁と打抜きストレーナ６の外壁により環状流路室８が形成されている。さらに、このオリフィスボックのスケーシングの胴部には、２基の微小異物回収装置９が設置されている。この微小異物回収装置９の１基は潤滑油入口管５の対向位置に設置され、他の１基はケーシング２の胴４の下側の位置に設置されている。
図３に示したように、この微小異物回収装置９は潤滑油中に含まれている微小異物を磁力により吸引するための被覆付永久磁石１０、微小異物を吸着するための強化透明材料から成る微小鉄粉吸着用底板１１、微小異物を吸着するための微小金属吸着用篭１２、およびこれらの部品を組み込むためのプラグ１３からなる。微小異物回収装置９には、図５に示したような微小異物外部取出し装置１４が設置されている。この微小異物外部取出し装置１４は、一端が底板に面して開口した吸引細管１５と、異物吸着用フィルタ１７と、ミニチュアバルブ１６および１８、および、吸引した潤滑油を排油管に導く細管系１９から構成されている。 As shown in FIGS. 1, 2, and 5, an orifice box 1 with a minute foreign matter collecting apparatus according to the present invention includes a cylindrical casing 2 with one end closed and a turbine bearing provided at the other end of the casing 2. (24 in FIG. 6) A lubricating oil outlet pipe 3 for flowing out the lubricating oil to (24 in FIG. 6), and a bearing oil pump (22 in FIG. 6) installed perpendicularly to the central axis of the casing 4 at the substantially central portion of the barrel 4 of the casing 2 A lubricating oil inlet pipe 5 for introducing lubricating oil from the cylinder, a cylinder installed in the casing, one end closed, the other end connected to the inner wall of the lubricating oil outlet pipe 3 of the casing 2 and a cylinder wall having a number of through holes A punching strainer 6 having a shape, and an orifice 7 installed between the punching strainer 6 and the lubricating oil outlet pipe 3 for controlling the flow rate of lubricating oil to the turbine bearing. An annular channel chamber 8 is formed by the inner wall of the body 4 of the casing 2 and the outer wall of the punched strainer 6. Further, two minute foreign matter collecting devices 9 are installed on the body portion of the casing of the orifice box. One of the minute foreign matter collection devices 9 is installed at a position opposite to the lubricating oil inlet pipe 5, and the other one is installed at a position below the trunk 4 of the casing 2.
As shown in FIG. 3, the fine foreign material collecting device 9 is composed of a coated permanent magnet 10 for attracting the fine foreign matter contained in the lubricating oil by magnetic force, and a reinforced transparent material for adsorbing the fine foreign matter. It comprises a bottom plate 11 for adsorbing minute iron powder, a minute metal adsorbing rod 12 for adsorbing minute foreign matter, and a plug 13 for incorporating these components. The minute foreign matter collecting device 9 is provided with a minute foreign matter external taking-out device 14 as shown in FIG. This fine foreign matter external extraction device 14 includes a suction capillary 15 whose one end is open facing the bottom plate, a foreign matter adsorption filter 17, miniature valves 16 and 18, and a capillary system 19 that guides the sucked lubricating oil to an oil discharge pipe. It is composed of

本実施例による微小異物回収装置付オリフィスボックスは上述のような構成を有するもので、次にその作用を説明する。   The orifice box with a minute foreign material recovery apparatus according to the present embodiment has the above-described configuration, and the operation thereof will be described next.

図２の白抜きの矢印で示したように、軸受油ポンプ（図６の２２）からの潤滑油は潤滑油入口管５を通りケーシング２の胴４の内壁と打抜きストレーナ６の外壁により形成された環状流路室８へ流入する。流入した潤滑油は流入方向の流れの成分を持っているので潤滑油入口管５の対向位置に設置されている微小異物回収装置９に向かって流れるが、やがて環状流路室８内の潤滑油と混合して速度をおとす。微小異物回収装置９の設置位置は潤滑油は流入方向の流れを活用した対向位置および重力の効果活用した下側位置としている。このようにして、環状流路室８内の潤滑油の流れは乱れて速度をおとし潤滑油中に混入した微小異物（鉄粉）は２基の微小異物回収装置９の磁石のそれぞれに吸引され易くなり、潤滑油中の微小異物（鉄粉）は除去され、対向位置および胴４の下側の位置に設置されている２基の微小異物回収装置９に効率的に回収される。   As indicated by the white arrow in FIG. 2, the lubricating oil from the bearing oil pump (22 in FIG. 6) passes through the lubricating oil inlet pipe 5 and is formed by the inner wall of the barrel 4 of the casing 2 and the outer wall of the punched strainer 6. Flow into the annular channel chamber 8. Since the inflowing lubricating oil has a flow component in the inflowing direction, it flows toward the minute foreign material recovery device 9 installed at a position opposite to the lubricating oil inlet pipe 5, but eventually the lubricating oil in the annular flow path chamber 8. And mix to reduce speed. The installation position of the minute foreign material recovery device 9 is set to an opposite position using the flow of the lubricating oil in the inflow direction and a lower position using the effect of gravity. In this way, the flow of the lubricating oil in the annular flow passage chamber 8 is disturbed to increase the speed, and the fine foreign matter (iron powder) mixed in the lubricating oil is attracted to each of the magnets of the two fine foreign matter collecting devices 9. As a result, the minute foreign matter (iron powder) in the lubricating oil is removed and efficiently collected by the two fine foreign matter collecting devices 9 installed at the opposing position and the lower position of the barrel 4.

微小異物が除去された潤滑油は円筒形の打抜きストレーナ６の多数の貫通孔を通りストレーナ６の内部へ流れ込む。打抜きストレーナ６により潤滑油の流れは整えられ（整流作用）、整流された潤滑油はオリフィス７および潤滑油出口管３を経てタービン軸受（図６の２４）へ送られる。この打抜きストレーナ６の主な役割は整流作用であり、圧力損失の増大を回避するため目を粗くしてあるが、大きな非磁性の異物は除去することが出来る。   The lubricating oil from which the minute foreign matter has been removed flows into the inside of the strainer 6 through a large number of through holes of the cylindrical punched strainer 6. The flow of the lubricating oil is adjusted by the punching strainer 6 (rectifying action), and the rectified lubricating oil is sent to the turbine bearing (24 in FIG. 6) through the orifice 7 and the lubricating oil outlet pipe 3. The main role of the punching strainer 6 is a rectifying action, and the eyes are roughened to avoid an increase in pressure loss, but large non-magnetic foreign matters can be removed.

微小異物回収装置９に回収され吸着・堆積された微小異物の量は、図４の（ａ）または（ｂ）に示したように、強化透明材料から成る微小鉄粉吸着用底板１１の観察窓または観察面を通して検知することが出来る。吸着・堆積された微小異物の量が所定の値に達した場合は、図５に示した微小異物外部取出し装置１４を用いて吸着・堆積した微小異物を系外部へ取出す。ミニチュアバルブ１６および１８を開くことにより、吸引細管１５から潤滑油に同伴させ吸着・堆積した微小異物を吸引することにより系外部へ取出す。このとき、潤滑油の一部が吸引細管１５を通して系外部へ流出するが、軸受油ポンプ（図６の２２）は圧力センサ（図６の２６）の指示値が一定に保たれるように制御されるため、オリフィス９の上流側の潤滑油圧力が一定値となり、タービン軸受（図６の２４）に流入する潤滑油流量が一定に保たれる。吸引された微小異物は異物吸着用フィルタ１７に吸着され、潤滑油は排油管へ排出される。微小異物外部取出し作業が終了した時点で、ミニチュアバルブ１６および１８を閉じる。異物吸着用フィルタ１７に吸着された微小異物は微小異物外部取出し作業が終了後、ミニチュアバルブ１６を閉じたまま、異物吸着用フィルタ１７を分解してフィルタの清掃をおこなう。以上のようにして、軸受部への潤滑油の供給を停止しせず、微小異物回収装置に堆積した極小異物を微小異物外部取出し装置により外部へ取り出すことが出来る。   As shown in FIG. 4A or 4B, the amount of minute foreign matter collected and adsorbed / deposited in the fine foreign matter collecting device 9 is the observation window of the bottom plate 11 for adsorbing fine iron powder made of reinforced transparent material. Or it can detect through an observation surface. When the amount of adsorbed and deposited minute foreign matter reaches a predetermined value, the minute foreign matter adsorbed and deposited is taken out of the system by using the fine foreign matter external take-out device 14 shown in FIG. By opening the miniature valves 16 and 18, the minute foreign matter adsorbed and deposited with the lubricating oil from the suction capillary 15 is sucked out and taken out of the system. At this time, a part of the lubricating oil flows out of the system through the suction capillary 15, but the bearing oil pump (22 in FIG. 6) is controlled so that the indicated value of the pressure sensor (26 in FIG. 6) is kept constant. Therefore, the lubricating oil pressure upstream of the orifice 9 becomes a constant value, and the lubricating oil flow rate flowing into the turbine bearing (24 in FIG. 6) is kept constant. The sucked minute foreign matter is adsorbed by the foreign matter adsorption filter 17 and the lubricating oil is discharged to the oil drain pipe. The miniature valves 16 and 18 are closed at the time when the external operation for removing the minute foreign matter is completed. The minute foreign matter adsorbed on the foreign matter adsorption filter 17 is removed, and the foreign matter adsorption filter 17 is disassembled and the filter is cleaned while the miniature valve 16 is closed after the external operation of taking out the fine foreign matter is completed. As described above, the supply of the lubricating oil to the bearing portion can be stopped and the very small foreign matter accumulated in the fine foreign matter collecting device can be taken out by the fine foreign matter external take-out device.

図５では、２基の微小異物回収装置９にたいして１基の微小異物外部取出し装置１４が設置されているが、各々の微小異物回収装置９に個別に微小異物外部取出し装置１４を設置することが望ましい。これにより、軸受部への潤滑油の供給を停止しせず、かつ、他の微小異物回収装置により極小異物を回収しながら、微小異物回収装置に堆積した極小異物を微小異物外部取出し装置により外部へ取り出すことが出来る。   In FIG. 5, one micro foreign matter extraction device 14 is installed for two micro foreign matter collection devices 9, but the micro foreign matter extraction device 14 can be individually installed in each micro foreign matter collection device 9. desirable. As a result, the supply of the lubricating oil to the bearing portion is not stopped, and the minimal foreign matter accumulated on the fine foreign matter collection device is externally removed by the fine foreign matter collection device while the minimal foreign matter is collected by another fine foreign matter collection device. Can be taken out.

以上に述べたように、本実施例によれば、潤滑油中の異物を微小異物回収装置により除去することにより、オリフィスボックスの流動抵抗を増加させずに、微小異物を効果的に除去でき、タービン軸受の健全性を確保できる。   As described above, according to the present embodiment, by removing the foreign matter in the lubricating oil by the fine foreign matter collecting device, it is possible to effectively remove the fine foreign matter without increasing the flow resistance of the orifice box, The soundness of the turbine bearing can be secured.

また、本実施例によれば、微小異物回収装置の底板が強化透明材料により構成されており、回収された微小異物の蓄積量が運転中に確認できる。   Further, according to the present embodiment, the bottom plate of the fine foreign matter collecting apparatus is made of the reinforced transparent material, and the amount of collected fine foreign matter can be confirmed during operation.

さらに、本実施例によれば、軸受部への潤滑油の供給を停止しせず、かつ、他の微小異物回収装置により極小異物を回収しながら、微小異物回収装置に堆積した極小異物を微小異物外部取出し装置により外部へ取り出すことが出来る。これにより、蒸気タービンを昼夜連続して何ヶ月と言う長期間亘って安全に運転することが出来る。   Further, according to the present embodiment, the supply of the lubricating oil to the bearing portion is not stopped, and the very small foreign matter accumulated in the fine foreign matter collecting device is collected while the very small foreign matter is collected by another fine foreign matter collecting device. It can be taken out by a foreign matter external take-out device. As a result, the steam turbine can be safely operated over a long period of several months, day and night.

本発明の一実施例による微小異物回収装置付オリフィスボックスの部分断面側面図である。It is a fragmentary sectional side view of the orifice box with a minute foreign material collection device by one example of the present invention. 本発明の一実施例による微小異物回収装置付オリフィスボックスの断面平面図である。1 is a cross-sectional plan view of an orifice box with a minute foreign material recovery device according to an embodiment of the present invention. 本発明の一実施例による微小異物回収装置の斜視図である。1 is a perspective view of a minute foreign matter collecting apparatus according to an embodiment of the present invention. 本発明の他の実施例による微小異物回収装置の断面側面図であり、強化透明材料により構成された底板を通して堆積した極小異物を観測できる様子を示したものである。FIG. 6 is a cross-sectional side view of a minute foreign matter collecting apparatus according to another embodiment of the present invention, and shows a state in which minimal foreign matter deposited through a bottom plate made of a reinforced transparent material can be observed. 本発明の一実施例による微小異物回収装置付オリフィスボックスを潤滑油出口管方向から見た図であり、特に、微小異物外部取出し装置の構成を示している。It is the figure which looked at the orifice box with a fine foreign material collection | recovery apparatus by one Example of this invention from the lubricating oil exit pipe | tube direction, and has shown especially the structure of the fine foreign material external extraction apparatus. 本発明の微小異物回収装置付オリフィスボックスが適用される蒸気タービン軸受潤滑油供給系の一例を示した概略系統図である。It is the schematic system diagram which showed an example of the steam turbine bearing lubricating oil supply system to which the orifice box with a fine foreign material collection | recovery apparatus of this invention is applied.

符号の説明Explanation of symbols

１…微小異物回収装置付オリフィスボックス，２…ケーシング，３…潤滑油出口管，４…ケーシングの胴，５…潤滑油入口管，６…打抜きストレーナ，７…オリフィス，８…環状流路室，９…微小異物回収装置，１０…被覆付永久磁石，１１…微小鉄粉吸着用底板，１２…微小金属吸着用篭，１３…プラグ，１４…微小異物外部取出し装置，１５…吸引細管，１６…ミニチュアバルブ，１７…異物吸着用フィルタ，１８…ミニチュアバルブ，１９…細管系，２１…油タンク，２２…軸受油ポンプ，２３…潤滑油供給管，２４…タービン軸受，２５…戻り油管，２６…圧力センサ。
DESCRIPTION OF SYMBOLS 1 ... Orifice box with fine foreign material collection | recovery apparatus, 2 ... Casing, 3 ... Lubricating oil outlet pipe, 4 ... Casing trunk | drum, 5 ... Lubricating oil inlet pipe, 6 ... Punching strainer, 7 ... Orifice, 8 ... Annular flow path chamber, DESCRIPTION OF SYMBOLS 9 ... Minute foreign material collection | recovery apparatus, 10 ... Coated permanent magnet, 11 ... Bottom plate for fine iron powder adsorption | suction, 12 ... Micro metal adsorption | suction cage | basket, 13 ... Plug, 14 ... Micro foreign matter external extraction device, 15 ... Suction capillary tube, 16 ... Miniature valve, 17 ... Foreign matter adsorption filter, 18 ... Miniature valve, 19 ... Narrow tube system, 21 ... Oil tank, 22 ... Bearing oil pump, 23 ... Lubricating oil supply pipe, 24 ... Turbine bearing, 25 ... Return oil pipe, 26 ... Pressure sensor.

Claims (1)

一端が閉じられた円筒形のケーシングと、該ケーシングの他端に備えられたタービン軸受への潤滑油を流出する潤滑油出口管と、該ケーシングの胴のほぼ中央部に該ケーシングの中心軸に垂直に設置された軸受油ポンプからの潤滑油を導入する潤滑油入口管と、該ケーシング内に設置され、一端が閉じられ他端が該ケーシングの潤滑油出口管内壁に接続され胴壁部に多数の貫通孔を有する円筒形の打抜きストレーナと、該打抜きストレーナと該潤滑油出口管との間に設置されタービン軸受への潤滑油流量を制御するためのオリフィスとを有するオリフィスボックスにおいて、
潤滑油中に含まれている微小異物を磁力により吸引するための被覆付永久磁石、微小異物を吸着するための強化透明材料から成る底板、微小異物を吸着するための篭、およびこれらの部品を組み込むためのプラグからなる微小異物回収装置を少なくとも２基を該ケーシングの胴に設置し、該微小異物回収装置の１基は該潤滑油入口管の対向位置に設置され、他の１基は該ケーシングの胴の下側位置に設置され、かつ、一端が該底板に面して開口した吸引細管と、異物吸着用フィルタと、ミニチュアバルブ、および、吸引した潤滑油を排油管に導く細管系から成る微小異物外部取出し装置が各々の該微小異物回収装置に設置されていることを特徴とする微小異物回収装置付オリフィスボックス。
A cylindrical casing with one end closed, a lubricating oil outlet pipe for flowing lubricating oil to a turbine bearing provided at the other end of the casing, and a central axis of the casing at a substantially central portion of the casing body Lubricating oil inlet pipe that introduces lubricating oil from a vertically installed bearing oil pump, and installed in the casing, with one end closed and the other end connected to the inner wall of the lubricating oil outlet pipe of the casing In an orifice box having a cylindrical punched strainer having a large number of through holes, and an orifice installed between the punched strainer and the lubricating oil outlet pipe for controlling the lubricating oil flow rate to the turbine bearing,
Covered permanent magnet for attracting minute foreign matter contained in lubricating oil by magnetic force, bottom plate made of reinforced transparent material for attracting minute foreign matter, scissors for attracting minute foreign matter, and these parts At least two minute foreign matter collecting devices comprising plugs to be installed are installed in the casing body, one of the fine foreign matter collecting devices is installed at a position opposite to the lubricating oil inlet pipe, and the other one is A suction capillary that is installed at the lower side of the casing body and that opens at one end facing the bottom plate, a foreign matter adsorption filter, a miniature valve, and a capillary system that guides the sucked lubricating oil to the drainage pipe An orifice box with a minute foreign matter collecting device, wherein the minute foreign matter external taking-out device is installed in each minute foreign matter collecting device.
JP2004350511A 2004-12-03 2004-12-03 Orifice box with device for collecting minute foreign matter contained in lubricating oil Pending JP2006161582A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004350511A JP2006161582A (en) 2004-12-03 2004-12-03 Orifice box with device for collecting minute foreign matter contained in lubricating oil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004350511A JP2006161582A (en) 2004-12-03 2004-12-03 Orifice box with device for collecting minute foreign matter contained in lubricating oil

Publications (1)

Publication Number Publication Date
JP2006161582A true JP2006161582A (en) 2006-06-22

Family

ID=36663895

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004350511A Pending JP2006161582A (en) 2004-12-03 2004-12-03 Orifice box with device for collecting minute foreign matter contained in lubricating oil

Country Status (1)

Country Link
JP (1) JP2006161582A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013079633A (en) * 2011-10-05 2013-05-02 Toshiba Corp Steam turbine lubricating oil supply device and steam turbine system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013079633A (en) * 2011-10-05 2013-05-02 Toshiba Corp Steam turbine lubricating oil supply device and steam turbine system

Similar Documents

Publication Publication Date Title
CA2755747C (en) Magnetic filtration apparatus
KR102166626B1 (en) Condensate removal device
US922657A (en) Strainer for lubricating systems.
JP2017201187A (en) Condensed water discharge device
CN206161395U (en) Flue gas analysis pretreatment systems
JPH08117517A (en) Strainer of fluid passage
US20120073906A1 (en) Device for filtering lubricants in a transmission
JP2006161582A (en) Orifice box with device for collecting minute foreign matter contained in lubricating oil
JPH0957149A (en) Magnetic powder removing apparatus
US10702811B2 (en) Filter device for fluids
JPH11290715A (en) Lubricant discharging port closing device
KR101624037B1 (en) A device for flushing lube oil of a turbine
CN106168146B (en) A kind of machine oil filter core
EP3760314B1 (en) Solid particle separator, method of separating solid particles from a fluid by said separator and method of discharging solid particles from said separator
CN103282761B (en) Sampling apparatus
RU57629U1 (en) FILTER INSTALLATION
DE102018208970A1 (en) Compressor, heat pump or air conditioning or cold machine and method of compacting
CN211816745U (en) Automatic drainage device
KR101399288B1 (en) Pressure reducing valve having pressure sensing pipe with filter
JP3608975B2 (en) Cleaning body recovery device
KR100243016B1 (en) Particle filter for semiconductor process
JP3997503B2 (en) O-ring mounting structure
KR200193060Y1 (en) Device for monitoring clogging within the strainer
IT202000025954A1 (en) VALVE FOR HYDRAULIC SYSTEMS AND PROCESS OF CONSTRUCTION OF THE SAME, METHOD OF TREATMENT OF FLUIDS USING SAID VALVE AND METHOD OF WASHING THE SAME
EP2727651B1 (en) System for clearing chips from a magnetic chip collector