JP2008102008A - Method and apparatus for detecting amount of wear for sealant of dry seal gas holder - Google Patents

Method and apparatus for detecting amount of wear for sealant of dry seal gas holder Download PDF

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JP2008102008A
JP2008102008A JP2006284431A JP2006284431A JP2008102008A JP 2008102008 A JP2008102008 A JP 2008102008A JP 2006284431 A JP2006284431 A JP 2006284431A JP 2006284431 A JP2006284431 A JP 2006284431A JP 2008102008 A JP2008102008 A JP 2008102008A
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wear
gas holder
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sealing
magnetic force
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JP5098287B2 (en
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Hiromi Obayashi
浩海 大林
Masanori Kurihara
正典 栗原
Norihiko Sakamoto
徳彦 坂本
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JFE Steel Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for detecting the amount of wear for sealants of dry seal gas holders and capable of easily, accurately, and safely detecting the amount of wear of sealants of dry seal gas holders. <P>SOLUTION: A permanent magnet 25 is embedded in sealing rubber 23, and a magnetic force detector 26 is arranged in an external surface of a side plate 12 at a location facing the sealing rubber 23, and the magnetic force detector 26 measures the magnetic force of the permanent magnet 25 so as to detect the amount of wear of the sealing rubber 23. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、乾式ガスホルダーのシール材摩耗量検出方法およびシール材摩耗量検出装置に関する。   The present invention relates to a seal material wear amount detection method and a seal material wear amount detection device for a dry gas holder.

ガスホルダーは、製鉄所で発生する副生ガス等の貯蔵設備であり、ガスバランスの短時間調整及びガス圧調整を行うためのものである。   The gas holder is a storage facility for by-product gas and the like generated at the steel works, and is used for a short-time gas balance adjustment and gas pressure adjustment.

図３に示すように、本発明が対象とする乾式ガスホルダー１０は、基柱１１と円筒状の側坂１２からなる側壁構造と、円盤状のピストン１３と、屋根１４および底板１５とで構成されていて、ピストン１３は、基柱１１または側板１２をガイドとして、ガス１９の流出入に応じて側板１２に沿って上下に摺動し、その外周にはピストン１３と側坂１２の間の気密保持をするためのシール装置１６が設けられている。このシール装置１６には、シール油の静圧でガスをシールするシール油方式と、摺動部にシール材（シールゴム）を多段に配設するゴムパッキン方式の２タイプがある。シール油方式はシール油の静圧をガス圧以上に保つことでガスをシールするとともに、シール油を側板との摺動部の潤滑に使っている。一方、ゴムパッキン方式は多段に配設したシール材（シールゴム）の面圧でガスをシールし、摺動部に潤滑材としてグリースを注入している。   As shown in FIG. 3, the dry gas holder 10 targeted by the present invention includes a side wall structure including a base 11 and a cylindrical side slope 12, a disk-shaped piston 13, a roof 14, and a bottom plate 15. The piston 13 slides up and down along the side plate 12 according to the inflow and outflow of the gas 19 with the base column 11 or the side plate 12 as a guide, and the outer periphery thereof is between the piston 13 and the side slope 12. A sealing device 16 is provided for airtightness. There are two types of the sealing device 16: a sealing oil system that seals gas with the static pressure of the sealing oil, and a rubber packing system in which sealing materials (seal rubber) are arranged in multiple stages on the sliding portion. The seal oil system seals the gas by keeping the static pressure of the seal oil at or above the gas pressure, and also uses the seal oil to lubricate the sliding portion with the side plate. On the other hand, in the rubber packing system, gas is sealed with the surface pressure of sealing materials (seal rubber) arranged in multiple stages, and grease is injected as a lubricant into the sliding portion.

図４は、シール油方式のシール装置１６の一例を示すものである。シール油２４の静圧をガス圧以上に保つことでガスをシールするとともに、シール材（ここでは、シールゴム）２３からなる摺動部をカウンタウエイトによる押し付け機構（図示せず）で側板１２に押し付けて、その面圧でシール油２４とガス１９間をシールするものである。なお、図４中、２１はピストンフートリング、２２はシール材保持部材を示す。   FIG. 4 shows an example of a seal oil type sealing device 16. Gas is sealed by keeping the static pressure of the sealing oil 24 at or above the gas pressure, and a sliding portion made of a seal material (here, seal rubber) 23 is pressed against the side plate 12 by a pressing mechanism (not shown) using a counterweight. The sealing oil 24 and the gas 19 are sealed with the surface pressure. In FIG. 4, 21 indicates a piston foot ring, and 22 indicates a sealing material holding member.

このようなシール装置１６の摺動部（シール材）２３は乾式ガスホルダーの心臓部であり、その摩耗劣化度合いや寿命を正確に測定・評価することが防災上非常に重要となっている。   The sliding portion (seal material) 23 of such a sealing device 16 is the heart of the dry gas holder, and it is very important for disaster prevention to accurately measure and evaluate the degree of wear deterioration and life.

これまでは、摺動部（シール材）の摩耗劣化度合い（摩耗量）を正確に測定するには、ガスホルダーの運転を停止し、シール油２４を除去した後、シール材２３を取り外して、摩耗量の測定を行なっていた。   Until now, in order to accurately measure the degree of wear deterioration (amount of wear) of the sliding portion (seal material), after stopping the operation of the gas holder, removing the seal oil 24, removing the seal material 23, The amount of wear was measured.

また、シール材の寿命をこれまでの実績からピストン走行距離などで予測する手法がとられていた。   Moreover, the method of predicting the lifetime of a sealing material from the past results by piston travel distance etc. was taken.

また、シール材に複数のループ回路からなる摩耗検知回路を埋設し、各ループ回路の電気的導通の有無を検知してシール材の摩耗度を知る方法が提案されている（例えば、特許文献１参照。）。   Further, a method has been proposed in which a wear detection circuit composed of a plurality of loop circuits is embedded in the seal material, and the degree of wear of the seal material is known by detecting the presence or absence of electrical continuity in each loop circuit (for example, Patent Document 1). reference.).

また、シール装置に超音波距離計を設置し、その設置位置から側板までの距離を検出してシール材の摩耗量を計測する方法が提案されている（例えば、特許文献２参照。）。
実開昭５８−１７２８０４号公報 特開昭６３−０８３４９９号公報 In addition, a method has been proposed in which an ultrasonic distance meter is installed in the sealing device, and the amount of wear of the sealing material is measured by detecting the distance from the installation position to the side plate (see, for example, Patent Document 2).
Japanese Utility Model Publication No. 58-172804 JP 63-083499 A

しかし、ガスホルダーの運転を停止し、シール油を除去した後、シール材を取り外して、シール材の摩耗量の測定を行なう方法では、時間と費用が莫大となるとともに、ガスホルダー停止中に圧力変動等が大きくなることや、高炉の突発休風等があった場合に、運用容量や保安容量が不足し、防災上のリスクが極めて大きくなる問題があった。   However, the method of measuring the amount of wear of the sealing material after removing the sealing oil after removing the operation of the gas holder and removing the sealing material is very time consuming and costly. In the case of large fluctuations or sudden blast breaks in the blast furnace, there is a problem that the operational capacity and the safety capacity are insufficient and the risk for disaster prevention becomes extremely large.

また、ピストンの走行距離よりシール材の寿命を予測する方法では、ガスホルダーの使用方法やガス需給状態の違いにより実績との誤差が大きくなる可能性があり、予測した寿命前にガスホルダーシール性能が著しく低下し、ガス漏洩事故、最悪の場合爆発事故に発展する可能性があった。   Also, in the method of predicting the seal material life from the distance traveled by the piston, there may be a large error with the actual results due to differences in gas holder usage and gas supply and demand conditions. There was a possibility that the gas leakage accident and the explosion accident in the worst case could develop.

また、特許文献１、２のように、シール装置に電気回路あるいは超音波距離計を設置する方法では、ガスホルダー内に配設した電気回路あるいは超音波距離計の保守・点検が困難である。しかも、検出用の電気配線等をガスホルダー内に配設する必要があるため、それが着火源となる危険性がある。   In addition, as in Patent Documents 1 and 2, in the method of installing an electric circuit or an ultrasonic distance meter in the sealing device, it is difficult to maintain and inspect the electric circuit or ultrasonic distance meter disposed in the gas holder. In addition, since it is necessary to arrange electric wiring for detection in the gas holder, there is a risk that it becomes an ignition source.

本発明は、前記のような事情に鑑みてなされたものであり、乾式ガスホルダーのシール材の摩耗量を簡単に正確でかつ安全に検出することができる乾式ガスホルダーのシール材摩耗量検出方法およびシール材摩耗量検出装置を提供することを目的とする。   The present invention has been made in view of the circumstances as described above, and it is possible to easily and accurately detect the wear amount of the seal material of the dry gas holder, and to detect the wear amount of the seal material of the dry gas holder. It is another object of the present invention to provide a seal material wear amount detection device.

上記課題を解決するために、本発明は以下の特徴を有する。   In order to solve the above problems, the present invention has the following features.

［１］側板に沿って上下動するピストンの外周に、該ピストンと前記側坂の間の気密保持をするためのシール装置が配設された乾式ガスホルダーにおいて、
前記シール装置のシール材の摩耗にともなって側板に近づくように永久磁石をシール装置に取り付けておき、その永久磁石の磁力を当該ガスホルダーの外部から測定することによって前記シール材の摩耗量を検出することを特徴とする乾式ガスホルダーのシール材摩耗量検出方法。 [1] In a dry gas holder in which a sealing device is provided on the outer periphery of a piston that moves up and down along the side plate to maintain an airtightness between the piston and the side slope.
A permanent magnet is attached to the sealing device so as to approach the side plate as the sealing material of the sealing device wears, and the amount of wear of the sealing material is detected by measuring the magnetic force of the permanent magnet from the outside of the gas holder. A method for detecting the amount of wear of a sealing material of a dry gas holder.

［２］側板に沿って上下動するピストンの外周に、該ピストンと前記側坂の間の気密保持をするためのシール装置が配設された乾式ガスホルダーにおいて、
前記シール装置のシール材の摩耗にともなって側板に近づくようにシール装置に取り付けられた永久磁石と、その永久磁石の磁力を当該ガスホルダーの外部から測定することによって前記シール材の摩耗量を検出するための磁力測定器を備えたことを特徴とする乾式ガスホルダーのシール材摩耗量検出装置。 [2] In a dry gas holder in which a sealing device is provided on the outer periphery of the piston that moves up and down along the side plate to maintain an airtightness between the piston and the side slope.
The amount of wear of the sealing material is detected by measuring the permanent magnet attached to the sealing device so as to approach the side plate as the sealing material of the sealing device wears, and the magnetic force of the permanent magnet from the outside of the gas holder. A device for detecting a wear amount of a sealing material of a dry gas holder, comprising a magnetic force measuring device for carrying out the operation.

［３］前記［２］に記載のシール材摩耗量検出装置を備えたことを特徴とする乾式ガスホルダー。   [3] A dry gas holder comprising the sealing material wear amount detecting device according to [2].

本発明においては、乾式ガスホルダーの心臓部である摺動部（シール材）の摩耗量を簡単に正確でかつ安全に検出することができる。その結果、摩耗量測定費用を大幅に削減できるとともに、シール性能低下によるガス漏れやそれに起因する爆発等のリスクを大幅に低減させることができる。   In the present invention, it is possible to easily and accurately detect the wear amount of the sliding portion (seal material) which is the heart of the dry gas holder. As a result, the wear amount measurement cost can be greatly reduced, and the risk of gas leakage due to a decrease in sealing performance and the explosion resulting therefrom can be greatly reduced.

本発明の一実施形態を図面に基づいて以下に述べる。   An embodiment of the present invention will be described below with reference to the drawings.

前述したように、この実施形態においては乾式ガスホルダーを対象としており、図３に示したように、乾式ガスホルダー１０は、基柱１１と円筒状の側坂１２からなる側壁構造と、円盤状のピストン１３と、屋根１４および底板１５とで構成されていて、ピストン１３は、基柱１１または側板１２をガイドとして、ガス１９の流出入に応じて側板１２に沿って上下に摺動し、その外周にはピストン１３と側坂１２の間の気密保持をするためのシール装置１６が設けられている。   As described above, this embodiment is directed to a dry gas holder. As shown in FIG. 3, the dry gas holder 10 includes a side wall structure including a base 11 and a cylindrical side slope 12, and a disk shape. The piston 13 is composed of a roof 14 and a bottom plate 15, and the piston 13 slides up and down along the side plate 12 according to the inflow and outflow of the gas 19 with the base column 11 or the side plate 12 as a guide, A sealing device 16 is provided on the outer periphery of the piston 13 to keep the airtightness between the piston 13 and the side slope 12.

図１は、そのシール装置１６を示すものであり、シール油方式のシール装置である。すなわち、シール油２４の静圧をガス圧以上に保つことでガスをシールするとともに、シール材（ここでは、シールゴム）２３からなる摺動部をカウンタウエイトによる押し付け機構（図示せず）で側板１２に押し付けて、その面圧でシール油２４とガス１９間をシールするようになっている。なお、図１中、２１はピストンフートリング、２２はシール材保持部材を示す。   FIG. 1 shows the sealing device 16, which is a sealing oil type sealing device. That is, the gas is sealed by keeping the static pressure of the seal oil 24 at or above the gas pressure, and the side plate 12 is pressed by a pressing mechanism (not shown) using a counterweight on the sliding portion made of the seal material (here, seal rubber) 23. The seal oil 24 and the gas 19 are sealed with the surface pressure. In FIG. 1, 21 indicates a piston foot ring, and 22 indicates a sealing material holding member.

そして、この実施形態においては、シールゴム２３に永久磁石２５が埋設されているとともに、シールゴム２３と相対する位置の側板１２外面に磁力検出器２６が配設されていて、永久磁石２５からの磁力を磁力検出器２６で測定し、増幅器２７を経由させて、記録計やモニター（図示せず）に表示することによって、シールゴム２３の摩耗量を検出するようになっている。   In this embodiment, a permanent magnet 25 is embedded in the seal rubber 23, and a magnetic force detector 26 is disposed on the outer surface of the side plate 12 at a position facing the seal rubber 23. The amount of wear of the seal rubber 23 is detected by measuring with the magnetic force detector 26 and displaying on a recorder or monitor (not shown) via the amplifier 27.

すなわち、シールゴム２３の摩耗量が増加するにつれて、永久磁石２５が側板１２に近づくようになるので、図２に示すように、磁力検出器２６が測定する永久磁石２５からの磁力が増加する。したがって、磁力検出器２６による磁力の測定結果に基づいて、シールゴム２３の摩耗量を検出することができる。   That is, as the amount of wear of the seal rubber 23 increases, the permanent magnet 25 comes closer to the side plate 12, so that the magnetic force from the permanent magnet 25 measured by the magnetic force detector 26 increases as shown in FIG. Therefore, the wear amount of the seal rubber 23 can be detected based on the measurement result of the magnetic force by the magnetic force detector 26.

これにより、この実施形態では、シールゴム２３の摩耗量を検出するに際し、ガスホルダーの運転を停止することなく正確に検出することができる。しかも、ガスホルダー内に電気回路や超音波距離計等の機器を配設していないので、保守・点検が容易であるとともに、着火源となる危険性もない。   Thereby, in this embodiment, when detecting the wear amount of the seal rubber 23, it is possible to accurately detect without stopping the operation of the gas holder. In addition, since devices such as an electric circuit and an ultrasonic distance meter are not provided in the gas holder, maintenance and inspection are easy and there is no danger of becoming an ignition source.

このようにして、この実施形態においては、乾式ガスホルダーの心臓部であるシール材（摺動部）２３の摩耗量を簡単に正確でかつ安全に検出することができる。その結果、摩耗量測定費用を大幅に削減できるとともに、シール性能低下によるガス漏れやそれに起因する爆発等のリスクを大幅に低減させることができる。   Thus, in this embodiment, the wear amount of the sealing material (sliding portion) 23 which is the heart of the dry gas holder can be detected easily, accurately and safely. As a result, the wear amount measurement cost can be greatly reduced, and the risk of gas leakage due to a decrease in sealing performance and the explosion resulting therefrom can be greatly reduced.

なお、上記の実施形態においては、シール油方式のシール装置を用いた場合で説明したが、ゴムパッキン方式のシール装置を用いた場合は、摺動部として多段に配設したシールゴムに永久磁石を埋設すればよい。   In the above embodiment, the case where a seal oil type seal device is used has been described. However, when a rubber packing type seal device is used, permanent magnets are attached to seal rubbers arranged in multiple stages as sliding portions. Just bury it.

また、シール油方式のシール装置において、摺動部（シール材）として鋼板が配設されている場合は、シール材（鋼板）に永久磁石を埋設すると、シール材（鋼板）が磁化されてしまって、シール材の摩耗量と磁力検出器２６の測定磁力との関係が明確にならないので、シール材（鋼板）の外部に永久磁石を設置・固定して、シール材（鋼板）の摩耗にともなって永久磁石が側板に近づくようにすればよい。   Further, in a seal oil type sealing device, when a steel plate is provided as a sliding portion (seal material), if a permanent magnet is embedded in the seal material (steel plate), the seal material (steel plate) is magnetized. Since the relationship between the amount of wear of the sealing material and the measured magnetic force of the magnetic force detector 26 is not clear, a permanent magnet is installed and fixed outside the sealing material (steel plate), and the seal material (steel plate) is worn. Thus, the permanent magnet may be brought closer to the side plate.

本発明の一実施形態における乾式ガスホルダーのシール装置を示す図である。It is a figure which shows the sealing device of the dry-type gas holder in one Embodiment of this invention. 本発明の一実施形態におけるシールゴムの摩耗量と永久磁石からの磁力の関係を示す図である。It is a figure which shows the relationship between the abrasion loss of the seal rubber in one Embodiment of this invention, and the magnetic force from a permanent magnet. 乾式ガスホルダーの構成を示す図である。It is a figure which shows the structure of a dry-type gas holder. 乾式ガスホルダーのシール装置を示す図である。It is a figure which shows the sealing device of a dry-type gas holder.

符号の説明Explanation of symbols

１０ 乾式ガスホルダー
１１ 基柱
１２ 側坂
１３ ピストン
１４ 屋根
１５ 底板
１６ シール装置
１９ ガス
２１ ピストンフートリング
２２ シール材保持部材
２３ シールゴム（摺動部）
２４ シール油
２５ 永久磁石
２６ 磁力検出器
２７ 増幅器 DESCRIPTION OF SYMBOLS 10 Dry type gas holder 11 Base pillar 12 Side slope 13 Piston 14 Roof 15 Bottom plate 16 Sealing device 19 Gas 21 Piston foot ring 22 Sealing material holding member 23 Seal rubber (sliding part)
24 Seal oil 25 Permanent magnet 26 Magnetic force detector 27 Amplifier

Claims (3)

側板に沿って上下動するピストンの外周に、該ピストンと前記側坂の間の気密保持をするためのシール装置が配設された乾式ガスホルダーにおいて、
前記シール装置のシール材の摩耗にともなって側板に近づくように永久磁石をシール装置に取り付けておき、その永久磁石の磁力を当該ガスホルダーの外部から測定することによって前記シール材の摩耗量を検出することを特徴とする乾式ガスホルダーのシール材摩耗量検出方法。 In a dry gas holder in which a sealing device for maintaining airtightness between the piston and the side slope is disposed on the outer periphery of the piston that moves up and down along the side plate,
A permanent magnet is attached to the sealing device so as to approach the side plate as the sealing material of the sealing device wears, and the amount of wear of the sealing material is detected by measuring the magnetic force of the permanent magnet from the outside of the gas holder. A method for detecting the amount of wear of a sealing material of a dry gas holder. 側板に沿って上下動するピストンの外周に、該ピストンと前記側坂の間の気密保持をするためのシール装置が配設された乾式ガスホルダーにおいて、
前記シール装置のシール材の摩耗にともなって側板に近づくようにシール装置に取り付けられた永久磁石と、その永久磁石の磁力を当該ガスホルダーの外部から測定することによって前記シール材の摩耗量を検出するための磁力測定器を備えたことを特徴とする乾式ガスホルダーのシール材摩耗量検出装置。 In a dry gas holder in which a sealing device for maintaining airtightness between the piston and the side slope is disposed on the outer periphery of the piston that moves up and down along the side plate,
The amount of wear of the sealing material is detected by measuring the permanent magnet attached to the sealing device so as to approach the side plate as the sealing material of the sealing device wears, and the magnetic force of the permanent magnet from the outside of the gas holder. A device for detecting a wear amount of a sealing material of a dry gas holder, comprising a magnetic force measuring device for carrying out the operation. 請求項２に記載のシール材摩耗量検出装置を備えたことを特徴とする乾式ガスホルダー。   A dry gas holder comprising the seal material wear amount detecting device according to claim 2.
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