JP2018112270A - Heat-resistant hose - Google Patents

Heat-resistant hose Download PDF

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JP2018112270A
JP2018112270A JP2017003762A JP2017003762A JP2018112270A JP 2018112270 A JP2018112270 A JP 2018112270A JP 2017003762 A JP2017003762 A JP 2017003762A JP 2017003762 A JP2017003762 A JP 2017003762A JP 2018112270 A JP2018112270 A JP 2018112270A
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heat
hose
resistant
metal casing
resistant member
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JP6495348B2 (en
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止郎 長塚
Shiro Nagatsuka
止郎 長塚
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Kyoei Sangyo KK
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Kyoei Sangyo KK
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Abstract

PROBLEM TO BE SOLVED: To provide a heat-resistant hose capable of exhibiting excellent heat resistance and durability.SOLUTION: A heat-resistant hose includes: a rubber hose 10; a heat-resistant member 20 with which the outside of the rubber hose 10 is covered; and a flexible metal casing 30 with which the circumference of the heat-resistant member is covered via an air layer 40. Thereby, when being used in a severe environment such as a coke furnace, the heat-resistant member 20 and the air layer 40 protects the rubber hose 10 from such high heat and, at the same time, the metal casing 30 of the outer side can reduce impact due to direct hit of red-heat coke scattered from the coke furnace, friction between hoses and the like. Further, the metal casing 30 is flexible and, therefore, can be easily and reliably connected also for a mobile part and a connection portion having a different connection position.SELECTED DRAWING: Figure 1

Description

本発明は、コークス炉などに用いられる耐熱ホースに関するものである。   The present invention relates to a heat-resistant hose used for a coke oven or the like.

一般に製鉄所などに併設されるコークス炉の可動部には、油圧やガスを供給するための可撓性（フレキシブル）の耐熱ホースが多数用いられている（例えば、特許文献１、２など）。この種の耐熱ホースは、常時高温下で使用されることから、例えばワイヤーブレードで補強されたゴムホースの周囲を２重ガラスブレードで覆うと共に、その外側を耐摩耗用のワイヤーブレードで覆い、さらにその外側をパイロジャケットなどと称される筒状のカバーで覆った耐熱構造となっている。   In general, a flexible heat-resistant hose for supplying hydraulic pressure and gas is used for a movable part of a coke oven installed in an ironworks or the like (for example, Patent Documents 1 and 2). Since this type of heat-resistant hose is always used at high temperatures, for example, a rubber hose reinforced with a wire blade is covered with a double glass blade, and the outside is covered with a wear-resistant wire blade. It has a heat-resistant structure with the outside covered with a cylindrical cover called a pyro jacket.

このパイロジャケットなどと称される筒状のカバーは、以下の非特許文献１に示すように高密度な筒状のグラスファイバーを酸化鉄赤シリコンラバーでコーティングしたものであり、例えば２０分以内であれば数百℃〜１０００℃以上、１５〜３０秒以内であれば１６００℃を超える高い耐熱性を発揮するといわれている。   This cylindrical cover called a pyro jacket or the like is formed by coating a high density cylindrical glass fiber with iron oxide red silicon rubber as shown in Non-Patent Document 1 below, for example, within 20 minutes. If it exists, it is said that if it is several hundred to 1000 ° C. or higher and within 15 to 30 seconds, high heat resistance exceeding 1600 ° C. is exhibited.

特開平７−１４５３８３号公報JP 7-145383 A 特開平５−１５６２６１号公報JP-A-5-156261 ADL INSULFLEX, INC.［online］、［２０１６年１２月２４日検索］、インターネット〈http://adlinsulflex.com/firesleeve/#〉ADL INSULFLEX, INC. [Online], [searched December 24, 2016], Internet <http://adlinsulflex.com/firesleeve/#>

ところで、上述したようなパイロジャケットを用いた耐熱ホースでは、コークス炉のような過酷な環境下では、設置箇所にもよるがその寿命は１〜３ヶ月程度と短いため、頻繁に交換する必要がある。これはコークス炉では単に熱だけでなく、飛散した赤熱コークスの直撃による衝撃やホース間または装置との摩耗、自然による雨水や炉蓋を清掃する際に使用する水による腐食などが起こるからであり、これらの現象が同時または連続して発生することでホースの寿命が短くなってしまうからである。   By the way, in the heat-resistant hose using the above-described pyro jacket, in a harsh environment such as a coke oven, although depending on the installation location, its life is as short as about 1 to 3 months, so it needs to be replaced frequently. is there. This is because in a coke oven, not only heat but also impact from direct hitting of scattered red-hot coke, abrasion between hoses or equipment, corrosion due to natural rainwater and water used to clean the furnace lid, etc. occur. This is because the life of the hose is shortened when these phenomena occur simultaneously or continuously.

そこで、本発明はこれらの課題を解決するために案出されたものであり、その目的は、コークス炉などのような過酷な環境下においても優れた耐熱性および耐久性を発揮できる新規な耐熱ホースを提供するものである。   Therefore, the present invention has been devised to solve these problems, and its purpose is a novel heat resistance that can exhibit excellent heat resistance and durability even in harsh environments such as a coke oven. A hose is provided.

前記課題を解決するために第１の発明は、ゴムホースと、当該ゴムホースの外側を覆う耐熱性部材と、当該耐熱性部材の周囲を空気層を介して覆う可撓性の金属製ケーシングとを有することを特徴とする耐熱ホースである。このような構成によれば、コークス炉などの過酷な環境下で使用した場合には、耐熱性部材及び空気層がその高熱からゴムホースを保護すると共に、その外側の金属製ケーシングがコークス炉から飛散した赤熱コークスの直撃による衝撃やホース間の摩擦などを軽減することができる。また、この金属製ケーシングは可撓性であるため、可動部や連結位置が異なる接続部位などに対しても容易且つ確実に接続することができる。   In order to solve the above-mentioned problem, the first invention has a rubber hose, a heat-resistant member that covers the outside of the rubber hose, and a flexible metal casing that covers the periphery of the heat-resistant member via an air layer. It is a heat-resistant hose characterized by this. According to such a configuration, when used in a harsh environment such as a coke oven, the heat-resistant member and the air layer protect the rubber hose from the high heat, and the outer metal casing is scattered from the coke oven. It is possible to reduce the impact of direct hitting of red hot coke and friction between hoses. In addition, since the metal casing is flexible, it can be easily and reliably connected to a connection portion or the like having a different movable portion or coupling position.

第２の発明は、第１の発明において、前記耐熱性部材が、ガラスブレードからなることを特徴とする耐熱ホースである。ガラス糸からなるガラスブレード（組編）は優れた耐熱性および摩耗強度を有するため、これをゴムホースの外側を覆う耐熱性部材として用いることで優れた耐熱・耐摩耗性を発揮することができる。   A second invention is the heat-resistant hose according to the first invention, wherein the heat-resistant member comprises a glass blade. Since the glass blade (braid) made of glass yarn has excellent heat resistance and wear strength, excellent heat resistance and wear resistance can be exhibited by using this as a heat resistant member covering the outside of the rubber hose.

第３の発明は、第１または第２の発明において、前記金属製ケーシングが、ＳＵＳ製の金属リング体を蛇腹状に連結してなることを特徴とする耐熱ホースである。このような金属製ケーシングを用いることにより、コークス炉から飛散した赤熱コークスの直撃による衝撃やホース間の摩擦などを軽減することができると共に、適度な可撓性を発揮して任意の方向に自由に曲げることができるため、可動部や連結位置が異なる接続部位などに対しても容易且つ確実に接続することができる。   A third invention is a heat-resistant hose according to the first or second invention, wherein the metal casing is formed by connecting metal ring bodies made of SUS in a bellows shape. By using such a metal casing, it is possible to reduce the impact caused by the direct hit of red hot coke scattered from the coke oven, friction between the hoses, etc., and exhibit moderate flexibility to freely move in any direction. Therefore, it is possible to easily and surely connect to a connection part or the like having a different movable part or coupling position.

第４の発明は、第１乃至３のいずれかの発明において、前記ゴムホースが、ワイヤブレードからなる補強層を有する油圧ホースであることを特徴とする耐熱ホースである。このような構成によれば、コークス炉の押出機などの油圧回路用の油圧ホースとして優れた耐熱性及び耐久性を発揮することができる。   A fourth invention is a heat-resistant hose according to any one of the first to third inventions, wherein the rubber hose is a hydraulic hose having a reinforcing layer made of a wire blade. According to such a configuration, it is possible to exhibit excellent heat resistance and durability as a hydraulic hose for a hydraulic circuit such as a coke oven extruder.

本発明の断熱ホースによれば、コークス炉などの過酷な環境下で使用した場合には、耐熱性部材がその高熱からゴムホースを保護すると共に、その外側の金属製ケーシングがコークス炉から飛散した赤熱コークスの直撃による衝撃やホース間の摩擦などを軽減することができる。また、この金属製ケーシングは可撓性であるため、可動部や連結位置が異なる接続部位などに対しても容易且つ確実に接続することができる。また、この金属製ケーシングと耐熱性部材との間に空気層を形成することにより、より優れた断熱効果を発揮できる。   According to the heat insulating hose of the present invention, when used in a harsh environment such as a coke oven, the heat-resistant member protects the rubber hose from the high heat, and the outer metal casing scatters from the coke oven. It can reduce the impact caused by the direct impact of coke and friction between hoses. In addition, since the metal casing is flexible, it can be easily and reliably connected to a connection portion or the like having a different movable portion or coupling position. Moreover, the more excellent heat insulation effect can be exhibited by forming an air layer between this metal casing and a heat resistant member.

本発明に係る断熱ホース１００の実施の一形態を示す一部破断側面図である。It is a partially broken side view which shows one Embodiment of the heat insulation hose 100 which concerns on this invention. 図１中Ｓ−Ｓ線断面図である。It is the SS sectional view taken on the line in FIG. 断熱ホース１００の端部の構造を示す一部破断側面図である。3 is a partially broken side view showing the structure of the end portion of the heat insulating hose 100. FIG. 図３中Ｐ部拡大図である。It is the P section enlarged view in FIG. 本発明に係る断熱ホース１００の形状例を示す側面図である。It is a side view which shows the example of a shape of the heat insulation hose 100 which concerns on this invention. ゴムホース１０に耐熱性部材２０を被せた状態を示す側面図である。2 is a side view showing a state in which a heat-resistant member 20 is put on the rubber hose 10. FIG. 耐熱性部材２０を第２キャップ２１で加締めた状態を示す側面図である。4 is a side view showing a state in which a heat-resistant member 20 is crimped with a second cap 21. FIG. 耐熱性部材２０の端部を切断した状態を示す側面図である。2 is a side view showing a state in which an end portion of a heat-resistant member 20 is cut. FIG. ゴムホース１０に金属製ケーシング３０を被せた状態を示す側面図である。3 is a side view showing a state in which the rubber hose 10 is covered with a metal casing 30. FIG. 金属製ケーシング３０の端部に第３キャップ３２を嵌めた状態を示す側面図である。4 is a side view showing a state in which a third cap 32 is fitted to an end of the metal casing 30. FIG. 金属製ケーシング３０を第３キャップ３２で加締めた状態を示す側面図である。4 is a side view showing a state in which a metal casing 30 is crimped with a third cap 32. FIG.

以下、本発明の実施の形態を添付図面を参照しながら説明する。図１は本発明に係る断熱ホース１００の実施の一形態を示す一部破断側面図、図２は図１中Ｓ−Ｓ線断面図である。図示するように、この断熱ホース１００は、ゴムホース１０と、このゴムホース１０の外側を覆う耐熱性部材２０と、さらにこの耐熱性部材２０の周囲を覆う金属製ケーシング３０とから主に構成されている。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a partially broken side view showing an embodiment of a heat insulating hose 100 according to the present invention, and FIG. 2 is a sectional view taken along the line S-S in FIG. As shown in the figure, the heat insulating hose 100 is mainly composed of a rubber hose 10, a heat resistant member 20 that covers the outside of the rubber hose 10, and a metal casing 30 that covers the periphery of the heat resistant member 20. .

ゴムホース１０は、例えば油圧ホースであり、押出機や落骸装置などのコークス炉を構成する機構のアクチュエータ(油圧シリンダ)などに連結されて用いられる。このゴムホース１０は図示するように耐油性の内面ゴム１１の外側が２層の補強用ワイヤブレード１２ａ、１２ｂからなる補強層１２で覆われていると共に、その補強層１２の外側が耐候性のカバーゴム１３で覆われた多層構造となっている。そして、この補強層１２が内面ゴム１１にかかる油圧に対する耐圧性を発揮すると共に、カバーゴム１３がこの内面ゴム１１や補強層１２に対する熱や水分などによる腐食劣化を防止するようになっている。また、このゴムホース１０の両端には、連結用のユニオン金具（口金具）１４，１４が筒状をした金属製の第１キャップ１５によって加締められてそれぞれ一体的に取り付けられている。   The rubber hose 10 is, for example, a hydraulic hose, and is used by being connected to an actuator (hydraulic cylinder) of a mechanism constituting a coke oven such as an extruder or a debris apparatus. In the rubber hose 10, as shown in the drawing, the outer side of the oil-resistant inner rubber 11 is covered with a reinforcing layer 12 composed of two layers of reinforcing wire blades 12a and 12b, and the outer side of the reinforcing layer 12 is a weather-resistant cover. It has a multilayer structure covered with rubber 13. The reinforcing layer 12 exhibits pressure resistance against the hydraulic pressure applied to the inner rubber 11, and the cover rubber 13 prevents the inner rubber 11 and the reinforcing layer 12 from being corroded by heat or moisture. Further, union fittings (connector fittings) 14 and 14 for coupling are integrally attached to both ends of the rubber hose 10 by crimping them with a cylindrical metal first cap 15.

耐熱性部材２０は、ガラス糸をチューブ状に編み込んだガラスブレードから構成されており、第１のガラスブレード２０ａと第２のガラスブレード２０ｂとの２層から構成されている。そして、図３に示すようにこの耐熱性部材２０の両端は、筒状をした金属製の第２キャップ２１（ブレード押さえキャップ）によってそれぞれ加締められてゴムホース１０に一体的に取り付けられている。   The heat resistant member 20 is composed of a glass blade in which glass yarn is knitted into a tube shape, and is composed of two layers of a first glass blade 20a and a second glass blade 20b. As shown in FIG. 3, both ends of the heat resistant member 20 are respectively crimped by a cylindrical metal second cap 21 (blade holding cap) and integrally attached to the rubber hose 10.

金属製ケーシング３０は、図２および図３に示すように耐熱性部材２０の周囲を空気層４０を介して覆った可撓性の金属管からなっている。具体的には、図３および図４に示すように断面Ｓ字形をしたＳＵＳ製の金属リング体３１をその長手方向に沿って多数蛇腹状に連結した構造となっている。そして、これら個々の金属リング体３１がその径方向または長手方向に僅かづつ歪むように変形することで図５（Ａ）〜（Ｃ）に示すように直線状態はもちろん、その全体が任意の方向に撓むように変形可能となっている。また、この金属製ケーシング３０の両端は、図３に示すようにそれぞれ筒状をした金属製の第３キャップ３２（ケーシング押さえキャップ）によって前述した第２キャップ２１上に加締められてゴムホース１０に一体的に取り付けられている。   As shown in FIGS. 2 and 3, the metal casing 30 is made of a flexible metal tube that covers the periphery of the heat-resistant member 20 via an air layer 40. Specifically, as shown in FIG. 3 and FIG. 4, a metal ring body 31 made of SUS having an S-shaped cross section is connected in a accordion shape along the longitudinal direction. Then, these individual metal ring bodies 31 are deformed so as to be slightly distorted in the radial direction or the longitudinal direction, so that the whole of the metal ring body 31 in an arbitrary direction as well as a linear state as shown in FIGS. It can be deformed to bend. Further, both ends of the metal casing 30 are crimped on the second cap 21 by the metal third cap 32 (casing pressing cap) each having a cylindrical shape as shown in FIG. It is attached integrally.

図６〜図１１は、このような構成をした本発明に係る断熱ホース１００の製造方法の一例を示したものである。先ず、図６に示すようにゴムホース１０の全体に少なくともその長さがこれよりも長い耐熱性部材２０を被せてからその第１キャップ１５上に第２キャップ２１を重ね合わせた後、図７に示すようにその第２キャップ２１を外側から加締めて固定し、その後、図８に示すようにユニオン金具（口金具）１４側の余分な部分を切断して除去する。これによって、耐熱性部材２０がゴムホース１０の全体を覆うように固定される。   6-11 shows an example of the manufacturing method of the heat insulation hose 100 based on this invention which comprised such a structure. First, as shown in FIG. 6, after covering the entire rubber hose 10 with a heat-resistant member 20 having a length at least longer than this, the second cap 21 is overlaid on the first cap 15, and then the structure shown in FIG. As shown in FIG. 8, the second cap 21 is swaged and fixed from the outside, and then the excess portion on the side of the union fitting (mouth fitting) 14 is cut and removed as shown in FIG. Thereby, the heat resistant member 20 is fixed so as to cover the entire rubber hose 10.

次に、図９に示すようにこの耐熱性部材２０の外側に金属製ケーシング３０を被せてその端部を第２キャップ２１上に位置させた後、図１０に示すように第２キャップ２１上に第３キャップ３２を被せてから図１１に示すようにその第３キャップ３２を外側から加締めて固定する。これによって、金属製ケーシング３０が耐熱性部材２０と共にゴムホース１０の全体を覆うように固定される。   Next, as shown in FIG. 9, the metal casing 30 is put on the outside of the heat-resistant member 20 and the end portion thereof is positioned on the second cap 21, and then, on the second cap 21 as shown in FIG. After the third cap 32 is put on, the third cap 32 is fixed by crimping from the outside as shown in FIG. Thereby, the metal casing 30 is fixed so as to cover the entire rubber hose 10 together with the heat resistant member 20.

このような構成をした本発明の断熱ホース１００は、コークス炉などの過酷な環境下であってもガラスブレードからなる耐熱性部材２０がその高熱からゴムホース１０を保護すると共に、その外側の金属製ケーシング３０がコークス炉から飛散した赤熱コークスの直撃による衝撃やホース間の摩擦などを軽減することができる。さらに、この金属製ケーシング３０と耐熱性部材２０との間に形成された空気層４０によって優れた断熱効果を発揮できる。   In the heat insulating hose 100 of the present invention having such a configuration, the heat-resistant member 20 made of a glass blade protects the rubber hose 10 from the high heat even in a harsh environment such as a coke oven, and the outer metal hose 100 is made of It is possible to reduce the impact caused by the direct impact of the red hot coke scattered from the coke oven by the casing 30 and the friction between the hoses. Further, an excellent heat insulating effect can be exhibited by the air layer 40 formed between the metal casing 30 and the heat-resistant member 20.

また、この金属製ケーシング３０が、ＳＵＳ製の金属リング体３１を複数蛇腹状に連結してなるため、適度な可撓性を発揮して任意の方向に自由に曲げることができる。このため、押出機の可動部や連結位置が異なる接続部位などに対しても容易且つ確実に接続することができる。さらに、この金属製ケーシング３０が雨水や炉を掃除する際に使用する水の浸入を防ぐため、水による腐食も防止できる。従って、本発明の断熱ホース１００をコークス炉の押出機などの油圧回路用の油圧ホースとして用いた場合には、従来のパイロジャケットを用いた耐熱ホースに比べて３倍以上の優れた耐久性を発揮することができる。   In addition, since the metal casing 30 is formed by connecting a plurality of SUS metal ring bodies 31 in a bellows shape, the metal casing 30 can exhibit an appropriate flexibility and can be freely bent in any direction. For this reason, it can connect easily and reliably to the connection part etc. from which the movable part and connection position of an extruder differ. Furthermore, since this metal casing 30 prevents intrusion of rainwater and water used when cleaning the furnace, corrosion due to water can also be prevented. Therefore, when the heat-insulating hose 100 of the present invention is used as a hydraulic hose for a hydraulic circuit such as a coke oven extruder, the durability is more than three times that of a conventional heat-resistant hose using a pyro jacket. It can be demonstrated.

この結果、従来のパイロジャケットを油圧ホースとして用いた場合は１〜３ヶ月毎に交換が必要であったが、本発明の断熱ホース１００を用いれば、１年以上の連続使用が可能となるため、交換頻度が大幅に減少し、コークス炉のメンテナンスコストを大幅に削減することができる。また、仮に金属製ケーシング３０が破損した場合には、その部分だけを交換することも可能となる。   As a result, when the conventional pyro jacket is used as a hydraulic hose, replacement was required every 1 to 3 months. However, if the heat insulating hose 100 of the present invention is used, continuous use for one year or more is possible. The replacement frequency can be greatly reduced, and the maintenance cost of the coke oven can be greatly reduced. In addition, if the metal casing 30 is damaged, only that portion can be replaced.

１００…断熱ホース
１０…ゴムホース
１１…内面ゴム
１２…補強層
１２ａ、１２ｂ…補強用ワイヤブレード
１３…カバーゴム
１４…ユニオン金具
１５…第１キャップ
２０…耐熱性部材
２０ａ、２０ｂ…ガラスブレード
２１…第２キャップ
３０…金属製ケーシング
３１…金属リング体
３２…第３キャップ
４０…空気層 DESCRIPTION OF SYMBOLS 100 ... Thermal insulation hose 10 ... Rubber hose 11 ... Internal rubber 12 ... Reinforcement layer 12a, 12b ... Reinforcing wire blade 13 ... Cover rubber 14 ... Union metal fitting 15 ... First cap 20 ... Heat-resistant member 20a, 20b ... Glass blade 21 ... First 2 cap 30 ... metal casing 31 ... metal ring body 32 ... third cap 40 ... air layer

Claims (4)

ゴムホースと、当該ゴムホースの外側を覆う耐熱性部材と、当該耐熱性部材の周囲を空気層を介して覆う可撓性の金属製ケーシングとを有することを特徴とする耐熱ホース。   A heat-resistant hose comprising a rubber hose, a heat-resistant member that covers the outside of the rubber hose, and a flexible metal casing that covers the periphery of the heat-resistant member via an air layer. 請求項１に記載の耐熱ホースにおいて、
前記耐熱性部材が、ガラスブレードからなることを特徴とする耐熱ホース。 In the heat-resistant hose according to claim 1,
The heat-resistant hose characterized in that the heat-resistant member is made of a glass blade. 請求項１または２に記載の耐熱ホースにおいて、
前記金属製ケーシングが、ＳＵＳ製の金属リング体を蛇腹状に連結してなることを特徴とする耐熱ホース。 In the heat-resistant hose according to claim 1 or 2,
The heat-resistant hose characterized by the said metal casing connecting the metal ring body made from SUS in the shape of a bellows. 請求項１乃至３のいずれかに記載の耐熱ホースにおいて、
前記ゴムホースが、ワイヤブレードからなる補強層を有する油圧ホースであることを特徴とする耐熱ホース。 The heat-resistant hose according to any one of claims 1 to 3,
The heat-resistant hose characterized in that the rubber hose is a hydraulic hose having a reinforcing layer made of a wire blade.
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JP7440856B1 (en) 2023-07-28 2024-02-29 上神テック株式会社 heat resistant hose

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