WO2015115172A1 - Flange tightening training system - Google Patents

Flange tightening training system Download PDF

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Publication number
WO2015115172A1
WO2015115172A1 PCT/JP2015/050711 JP2015050711W WO2015115172A1 WO 2015115172 A1 WO2015115172 A1 WO 2015115172A1 JP 2015050711 W JP2015050711 W JP 2015050711W WO 2015115172 A1 WO2015115172 A1 WO 2015115172A1
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Prior art keywords
flange
tightening
bolt
training system
bolts
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PCT/JP2015/050711
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French (fr)
Japanese (ja)
Inventor
雅之 山邊
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日本バルカー工業株式会社
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Publication of WO2015115172A1 publication Critical patent/WO2015115172A1/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
    • G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06—Screw or nut setting or loosening machines
    • B23P19/065—Arrangements for torque limiters or torque indicators in screw or nut setting machines
    • B23P19/066—Arrangements for torque limiters or torque indicators in screw or nut setting machines by electrical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B2031/022—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load using an ultrasonic transducer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/10—Indicators for correct coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/003—Auxiliary devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/036—Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps

Definitions

  • the present invention relates to a flange tightening training system. More specifically, the present invention relates to a flange tightening training system capable of practicing proper bolt tightening when tightening a flange of a connection portion between pipes.
  • the present invention has been made in view of the above-described prior art, and provides a flange tightening training system capable of practicing the work of tightening the flanges of the connecting portions of the pipes with bolts without requiring a skilled worker.
  • the task is to do.
  • the present invention is a flange tightening training system for practicing proper tightening when tightening a flange of a connection portion between pipes with a bolt, for tightening flange A, flange B, flange A and flange B. And a flange tightening practice means in which a strain sensor for detecting strain generated when the bolt is tightened is disposed on the bolt, and by tightening each bolt of the flange tightening practice means.
  • the present invention relates to a flange tightening training system comprising a calculation means for converting the generated distortion of each bolt into data and a display means for visualizing the data converted into data by the calculation means.
  • the flange tightening training system of the present invention is a flange tightening training system for practicing proper tightening when tightening the flanges of the connecting portions of the pipes.
  • the flange A, the flange B, and the flange A And a flange tightening practice means including a bolt for fastening the bolt and the flange B, and a strain sensor for detecting a strain generated when the bolt is tightened.
  • Characterized in that it comprises calculation means for converting the distortion of each bolt generated by tightening each of the bolts into data, and display means for visualizing the data converted into data by the calculation means. .
  • the flange tightening training system of the present invention has the above-described configuration, by using the flange tightening training system, it is possible to allow the trainee to practice a technique necessary for tightening the flange of the connection portion between the pipes with a bolt.
  • the flange tightening training system of the present invention when the flanges of the joints between the pipes are tightened with bolts, the axial force of each bolt that cannot be visually observed at the actual tightening site of the flanges is measured. Can be perceived visually through the distortion.
  • the flange tightening training system of the present invention it is possible not only to easily learn the work of tightening the flanges of the pipes with bolts, but also to tighten the bolts attached to the flanges without the need for skilled workers.
  • skilled skill is required for tightening the bolt, but the skilled worker can acquire the skilled skill.
  • the tightening force tends to decrease with time due to, for example, changes in environmental temperature.
  • the initial tightening force In addition to learning the technology for accurately performing the above, it is possible to grasp the change over time in the amount of stress relaxation due to a decrease in the tightening force, so the practitioner can learn the timing of retightening.
  • FIG. 1 is a schematic explanatory view showing an embodiment of the flange tightening training system of the present invention.
  • the flange tightening training system shown in FIG. 1 is mainly composed of a flange tightening practice means 1, a calculation means 2, and a display means 3.
  • the flange tightening practice means 1 is provided with a flange A4, a flange B5, and a bolt 6 for tightening the flange A4 and the flange B5.
  • a plurality of bolts 6 are inserted into through holes (not shown) disposed in the flange A4 and the flange B5.
  • regulated to JISB2290 can be used.
  • bolt 6 for tightening the flange A4 and the flange B5 there is no limitation in particular also about the volt
  • a flange is actually attached by a practitioner.
  • the bolts 6 are distorted. Since the distortion is proportional to the axial force of the bolt 6 generated by tightening the bolt 6, for example, as shown in FIG. 2, the strain sensor 7 is attached to the thread surface of the bolt 6, and the bolt 6 By measuring the strain generated by tightening with the strain sensor 7, the axial force of the bolt 6 can be obtained indirectly.
  • FIG. 2 is a schematic explanatory diagram of the bolt 6 when the strain sensor 7 is disposed on the bolt 6 used in the flange tightening training system of the present invention.
  • the strain generated by tightening each bolt 6 is detected by the strain sensor 7, and the strain detected by the strain sensor 7 is sent to the computing means 2 via the wiring 8 as an electrical signal.
  • the computing means 2 is means for converting the distortion generated by tightening each bolt 6 into data.
  • the distortion of each bolt 6 generated by tightening each bolt 6 by the flange tightening practice means 1 is converted into data.
  • a computer such as a personal computer can be used.
  • the data converted into data by the calculation means 2 is sent as electronic data to the display means 3 via the wiring 9.
  • the display unit 3 is a unit for visualizing the data converted into data by the calculation unit 2, and a monitor such as a liquid crystal monitor can be used as the display unit 3.
  • the trainee can first learn the order in which the bolt 6 is fastened to the flange A4 and the flange B5.
  • FIG. 3 is a flowchart when the practitioner performs a practice of tightening the flange A4 and the flange B5 using the flange tightening training system of the present invention.
  • the trainee performs the flange tightening practice between the flange A and the flange B using a torque wrench (not shown) or the like in the flange tightening practice means 1.
  • the strain generated at that time is detected by a strain sensor 7 disposed on the bolt 6 as shown in FIG.
  • each bolt 6 generated by tightening each bolt 6 of the flange tightening practice means 1 is converted into data by the computing means 2 as described in "Data conversion of bolt distortion" shown in FIG. .
  • the distortion displayed on the display means 3 can be displayed as an image as shown in FIG. 4, for example, and a subtle change in tightening force that cannot be sufficiently grasped by, for example, a torque wrench due to the image. It is possible to recognize and grasp the change in distortion caused by vision.
  • FIG. 4 shows an example of an image when the distortion generated when the bolt 6 is tightened using the flange tightening training system of the present invention is visualized.
  • the number of bolts 6 used is eight, and codes 1 to 8 are written clockwise.
  • the trainee can grasp the technique for tightening the flange A4 and the flange B5 in real time via the strain data, so that the skilled worker Even if it does not exist, it is possible to acquire a technique necessary for appropriately tightening the bolt 6 through practice while viewing the display screen of the display device 3.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Algebra (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)

Abstract

A flange tightening training system is for training in suitable tightening when tightening a flange on parts for connecting pipes to each other, and is characterized by having a flange (A4), a flange (B5), and bolts (6) for tightening the flange (A4) and the flange (B5), and by being provided with a flange tightening training means (1) wherein strain sensors (7) for detecting strain generated when the bolts (6) are tightened are disposed in the bolts (6), a calculation means (2) for creating data from the strain on each bolt (6) that is generated by tightening each bolt (6) in the flange tightening training means (1), and a display means (3) for visualization of the data that has been created by the calculation means (2).

Description

フランジ締付け実習システムFlange tightening training system
　本発明は、フランジ締付け実習システムに関する。さらに詳しくは、本発明は、配管同士の接続部のフランジを締付ける際に適切なボルトの締付けを実習することができるフランジ締付け実習システムに関する。 The present invention relates to a flange tightening training system. More specifically, the present invention relates to a flange tightening training system capable of practicing proper bolt tightening when tightening a flange of a connection portion between pipes.
　配管同士のフランジをボルトで締付ける作業は、フランジ間に使用されるガスケットの機能を十分に発現させるために非常に重要な作業である。 The work of tightening the flanges between pipes with bolts is a very important work in order to fully develop the function of the gasket used between the flanges.
　従来、配管同士のフランジのボルトによる締付けは、多くの場合、現場の作業者の感覚で行なわれており、配管内に高圧の流体を使用するときや危険性が高い流体を使用するときには、トルクレンチでボルトを締付ける際のトルク値を確認しながら行なわれている（例えば、特許文献１の段落［００３５］、特許文献２の段落［００１８］、特許文献３の段落［００１２］、特許文献４の段落［００３２］などを参照）。しかし、配管同士のフランジをボルトで締付けた場合、その締付け力は、使用されるガスケットの種類や環境温度などによって異なるとともに、例えば、環境温度変化などによって経時とともに低下する傾向があることから、当該ボルトを締め付けには、かなりの熟練した技術が要求される。 Conventionally, tightening of flanges between pipes with bolts in many cases has been carried out in the sense of an on-site worker, and when using a high-pressure fluid or high-risk fluid in the pipe, This is performed while confirming the torque value when tightening the bolt with a wrench (for example, paragraph [0035] of Patent Document 1, paragraph [0018] of Patent Document 2, paragraph [0012] of Patent Document 3, and Patent Document 4). (See paragraph [0032] etc.). However, when the flanges between pipes are tightened with bolts, the tightening force varies depending on the type of gasket used, the environmental temperature, etc. and, for example, tends to decrease over time due to environmental temperature changes, etc. Tightening the bolts requires considerable skill.
　また、トルクレンチでボルトの締付けを適切に行なった場合であっても、少なく見積もっても±１７％程度の締付け力のバラツキが生じることがあり、配管同士のフランジにボルトを締付ける順序を誤った場合には、ミスアライメントが発生し、配管不良によって配管内の内容物がフランジ部分から漏出するおそれがあることから、作業者は、ボルトの締付け力を適切に調整することができる技術を身につける必要がある。 Even if the bolts are tightened properly with a torque wrench, there may be a variation in tightening force of about ± 17% even if estimated to a minimum. The order of tightening the bolts on the flanges between the pipes is incorrect. In this case, misalignment may occur, and the contents in the pipe may leak from the flange due to poor piping.Therefore, the operator will acquire the technology that can adjust the bolt tightening force appropriately. It is necessary to turn on.
　したがって、配管同士のフランジをボルトで締付ける作業を学習するためには、熟練した作業者の指導のもとで実際に配管同士のフランジをボルトで締付ける作業を行なうことが望まれる。しかし、近年、配管同士のフランジのボルトによる締付けに熟練している技術者の減少傾向にあることから、熟練した作業者の指導のもとで学習することが困難になりつつあるため、熟練した作業者が不在であっても配管同士のフランジのボルトによる締付け作業を実習することができるフランジ締付け実習システムの開発が急務となっている。 Therefore, in order to learn the work of tightening the flanges between the pipes with bolts, it is desirable to actually perform the work of tightening the flanges between the pipes with bolts under the guidance of a skilled worker. However, in recent years, the number of engineers who are skilled in tightening flanges between pipes with a bolt tends to decrease, so it is becoming difficult to learn under the guidance of skilled workers. There is an urgent need to develop a flange tightening training system that can practice tightening work of bolts between flanges of pipes even when there is no worker.
特開２０１２－２１９９３２９号公報JP 2012-2199329 A 特開２０１３－０２０４７１３号公報JP 2013-0204713 A 特開２０１３－０２２１５７７号公報JP 2013-0221577 A 特開２０１３－０２４１９５１号公報JP 2013-0241951 A
　本発明は、前記従来技術に鑑みてなされたものであり、熟練した作業者を必要とせずに、配管同士の接続部のフランジをボルトで締付ける作業を実習させることができるフランジ締付け実習システムを提供することを課題とする。 The present invention has been made in view of the above-described prior art, and provides a flange tightening training system capable of practicing the work of tightening the flanges of the connecting portions of the pipes with bolts without requiring a skilled worker. The task is to do.
　本発明は、配管同士の接続部のフランジをボルトで締付ける際に適切な締付けを実習させるためのフランジ締付け実習システムであって、フランジＡと、フランジＢと、フランジＡとフランジＢとを締付けるためのボルトとを有し、当該ボルトを締付ける際に発生する歪を検知するための歪センサーが当該ボルトに配設されているフランジ締付け練習手段と、当該フランジ締付け練習手段の各ボルトを締付けることによって発生した各ボルトの歪をデータ化させるための演算手段と、当該演算手段でデータ化されたデータを視認化させるための表示手段とを備えていることを特徴とするフランジ締付け実習システムに関する。 The present invention is a flange tightening training system for practicing proper tightening when tightening a flange of a connection portion between pipes with a bolt, for tightening flange A, flange B, flange A and flange B. And a flange tightening practice means in which a strain sensor for detecting strain generated when the bolt is tightened is disposed on the bolt, and by tightening each bolt of the flange tightening practice means. The present invention relates to a flange tightening training system comprising a calculation means for converting the generated distortion of each bolt into data and a display means for visualizing the data converted into data by the calculation means.
　本発明のフランジ締付け実習システムによれば、熟練した作業者を必要とせずに、配管同士の接続部のフランジをボルトで締付ける作業を実習することができるという優れた効果が奏される。 According to the flange tightening training system of the present invention, there is an excellent effect that it is possible to practice the work of tightening the flanges of the connecting portions of the pipes with bolts without requiring a skilled worker.
本発明のフランジ締付け実習システムの一実施態様を示す概略説明図である。It is a schematic explanatory drawing which shows one embodiment of the flange clamping training system of this invention. 本発明のフランジ締付け実習システムに用いられるボルトに歪センサーが配設されているときのボルトの概略説明図である。It is a schematic explanatory drawing of a bolt when the strain sensor is arrange | positioned at the bolt used for the flange fastening training system of this invention. 本発明のフランジ締付け実習システムを用いてフランジＡとフランジＢとをボルトで締付ける実習を行なうときのフローチャートである。It is a flowchart when performing the practice which fastens the flange A and the flange B with a volt | bolt using the flange fastening training system of this invention. 本発明のフランジ締付け実習システムを用いてフランジＡとフランジＢとをボルトで締付ける際に発生した歪を視認化させたときの画像の一例を示す図である。It is a figure which shows an example when visualizing the distortion which generate | occur | produced when tightening the flange A and the flange B with a volt | bolt using the flange clamping training system of this invention.
　本発明のフランジ締付け実習システムは、前記したように、配管同士の接続部のフランジを締付ける際に適切な締付けを実習させるためのフランジ締付け実習システムであり、フランジＡと、フランジＢと、フランジＡとフランジＢとを締付けるためのボルトとを有し、当該ボルトを締付ける際に発生する歪を検知するための歪センサーが当該ボルトに配設されているフランジ締付け練習手段と、当該フランジ締付け練習手段の各ボルトを締付けることによって発生した各ボルトの歪をデータ化させるための演算手段と、当該演算手段でデータ化されたデータを視認化させるための表示手段とを備えていることを特徴とする。 As described above, the flange tightening training system of the present invention is a flange tightening training system for practicing proper tightening when tightening the flanges of the connecting portions of the pipes. The flange A, the flange B, and the flange A And a flange tightening practice means including a bolt for fastening the bolt and the flange B, and a strain sensor for detecting a strain generated when the bolt is tightened. Characterized in that it comprises calculation means for converting the distortion of each bolt generated by tightening each of the bolts into data, and display means for visualizing the data converted into data by the calculation means. .
　本発明のフランジ締付け実習システムは前記構成を有するので、当該フランジ締付け実習システムを用いることにより、配管同士の接続部のフランジをボルトで締付ける際に必要な技術を実習者に実習させることができる。また、本発明のフランジ締付け実習システムを用いることにより、配管同士の接続部のフランジをボルトで締付けているときに、実際のフランジの締付け現場では目視することができない各ボルトの軸力を各ボルトの歪を通じて視覚によって認識することができる。 Since the flange tightening training system of the present invention has the above-described configuration, by using the flange tightening training system, it is possible to allow the trainee to practice a technique necessary for tightening the flange of the connection portion between the pipes with a bolt. In addition, by using the flange tightening training system of the present invention, when the flanges of the joints between the pipes are tightened with bolts, the axial force of each bolt that cannot be visually observed at the actual tightening site of the flanges is measured. Can be perceived visually through the distortion.
　したがって、本発明のフランジ締付け実習システムを用いることにより、熟練した作業者がいなくても配管同士のフランジをボルトで締付ける作業を容易に学習することができるのみならず、フランジに取り付けられるボルトの締め付け力のバラツキに起因して突発的に配管不良などが発生したとき、当該ボルトの締付けには熟練したスキルを必要とするが、当該熟練したスキルを実習者の身につけさせることができる。 Therefore, by using the flange tightening training system of the present invention, it is possible not only to easily learn the work of tightening the flanges of the pipes with bolts, but also to tighten the bolts attached to the flanges without the need for skilled workers. When a piping failure or the like suddenly occurs due to power variation, skilled skill is required for tightening the bolt, but the skilled worker can acquire the skilled skill.
　さらに、配管同士のフランジをボルトで締付けた場合、その締付け力は、例えば、環境温度の変化などによって経時とともに低下する傾向があるが、本発明のフランジ締付け実習システムを用いることにより、最初の締付けを正確に行なう技術の習得のみならず、締付け力の低下による応力緩和量の経時変化を把握することができることから、実習者は、増し締めのタイミングを習得することができる。 Further, when the flanges between the pipes are tightened with bolts, the tightening force tends to decrease with time due to, for example, changes in environmental temperature. However, by using the flange tightening training system of the present invention, the initial tightening force In addition to learning the technology for accurately performing the above, it is possible to grasp the change over time in the amount of stress relaxation due to a decrease in the tightening force, so the practitioner can learn the timing of retightening.
　以下に本発明のフランジ締付け実習システムを図面に基づいてさらに詳細に説明するが、本発明は、かかる図面に記載の実施態様のみに限定されるものではない。 Hereinafter, the flange tightening training system of the present invention will be described in more detail based on the drawings, but the present invention is not limited to only the embodiments described in the drawings.
　図１は、本発明のフランジ締付け実習システムの一実施態様を示す概略説明図である。
　図１に示されるフランジ締付け実習システムは、主として、フランジ締付け練習手段１と演算手段２と表示手段３とによって構成されている。 FIG. 1 is a schematic explanatory view showing an embodiment of the flange tightening training system of the present invention.
The flange tightening training system shown in FIG. 1 is mainly composed of a flange tightening practice means 1, a calculation means 2, and a display means 3.
　フランジ締付け練習手段１には、フランジＡ４と、フランジＢ５と、フランジＡ４とフランジＢ５とを締付けるためのボルト６とが設けられている。フランジＡ４とフランジＢ５とを強固に締付けるために、複数のボルト６がフランジＡ４およびフランジＢ５に配設されている貫通孔（図示せず）に挿入されている。フランジＡ４およびフランジＢ５の種類には特に限定がなく、例えば、ＪＩＳ　Ｂ２２９０に規定されているフランジを用いることができる。また、フランジＡ４とフランジＢ５とを締付けるためのボルト６に関しても特に限定がなく、フランジＡ４およびフランジＢ５に適したボルトを適宜選択して用いることが好ましい。 The flange tightening practice means 1 is provided with a flange A4, a flange B5, and a bolt 6 for tightening the flange A4 and the flange B5. In order to firmly tighten the flange A4 and the flange B5, a plurality of bolts 6 are inserted into through holes (not shown) disposed in the flange A4 and the flange B5. There is no limitation in particular in the kind of flange A4 and flange B5, For example, the flange prescribed | regulated to JISB2290 can be used. Moreover, there is no limitation in particular also about the volt | bolt 6 for tightening the flange A4 and the flange B5, and it is preferable to select and use a bolt suitable for the flange A4 and the flange B5.
　フランジ締付け練習手段１では、実際に実習者によってフランジの取り付け作業が行なわれる。実習者がフランジＡ４とフランジＢ５とを各ボルトで締付ける際には、各ボルト６に歪が発生する。当該歪は、ボルト６の締め付けによって発生するボルト６の軸力と比例関係にあることから、例えば、図２に示されるように、ボルト６のねじ山面に歪センサ７を取り付け、ボルト６の締め付けによって発生した歪を当該歪センサ７で測定することにより、ボルト６の軸力を間接的に求めることができる。 フ ラ ン ジ In the flange tightening practice means 1, a flange is actually attached by a practitioner. When the practitioner tightens the flange A4 and the flange B5 with the bolts, the bolts 6 are distorted. Since the distortion is proportional to the axial force of the bolt 6 generated by tightening the bolt 6, for example, as shown in FIG. 2, the strain sensor 7 is attached to the thread surface of the bolt 6, and the bolt 6 By measuring the strain generated by tightening with the strain sensor 7, the axial force of the bolt 6 can be obtained indirectly.
　なお、図２は、本発明のフランジ締付け実習システムに用いられるボルト６に歪センサー７が配設されているときのボルト６の概略説明図である。 FIG. 2 is a schematic explanatory diagram of the bolt 6 when the strain sensor 7 is disposed on the bolt 6 used in the flange tightening training system of the present invention.
　各ボルト６を締付けることによって発生した歪は、歪センサー７で検知され、歪センサー７で検知された歪は、電気信号として配線８を介して演算手段２に送られる。 The strain generated by tightening each bolt 6 is detected by the strain sensor 7, and the strain detected by the strain sensor 7 is sent to the computing means 2 via the wiring 8 as an electrical signal.
　演算手段２は、各ボルト６を締付けることによって発生した歪をデータ化させるための手段である。演算手段２では、フランジ締付け練習手段１で各ボルト６を締付けることによって発生した各ボルト６の歪がデータ化される。演算手段２としては、例えば、パーソナルコンピュータなどのコンピュータを用いることができる。 The computing means 2 is means for converting the distortion generated by tightening each bolt 6 into data. In the calculation means 2, the distortion of each bolt 6 generated by tightening each bolt 6 by the flange tightening practice means 1 is converted into data. As the computing means 2, for example, a computer such as a personal computer can be used.
　演算手段２でデータ化されたデータを視認化させるために、演算手段２でデータ化されたデータは、電子データとして配線９を介して表示手段３に送られる。 In order to visualize the data converted into data by the calculation means 2, the data converted into data by the calculation means 2 is sent as electronic data to the display means 3 via the wiring 9.
　表示手段３は、演算手段２でデータ化されたデータを視認化させるための手段であり、当該表示手段３として、例えば液晶モニタなどのモニタを用いることができる。 The display unit 3 is a unit for visualizing the data converted into data by the calculation unit 2, and a monitor such as a liquid crystal monitor can be used as the display unit 3.
　以上のように構成される本発明のフランジ締付け実習システムを用いることにより、実習者は、まずフランジＡ４とフランジＢ５とにボルト６を締付ける順序を学習することができる。 By using the flange tightening training system of the present invention configured as described above, the trainee can first learn the order in which the bolt 6 is fastened to the flange A4 and the flange B5.
　また、実習者は、フランジ締付け練習手段１で、フランジＡ４とフランジＢ５とをボルト６で適切に締付ける技術を実習することができる。そのときのフローチャートを図３に示す。 Also, the practitioner can practice the technique of appropriately tightening the flange A4 and the flange B5 with the bolt 6 by the flange tightening practice means 1. A flowchart at that time is shown in FIG.
　図３は、実習者が本発明のフランジ締付け実習システムを用いてフランジＡ４とフランジＢ５とを締付ける実習を行なうときのフローチャートである。 FIG. 3 is a flowchart when the practitioner performs a practice of tightening the flange A4 and the flange B5 using the flange tightening training system of the present invention.
　図３の「フランジ締付け練習」に記載されているように、実習者は、フランジ締付け練習手段１でトルクレンチ（図示せず）などを用いてフランジＡとフランジＢとのフランジ締付け練習を行なう。そのときに発生した歪は、図２に示されるようにボルト６に配設された歪センサー７で検出される。 As shown in “Flange tightening practice” in FIG. 3, the trainee performs the flange tightening practice between the flange A and the flange B using a torque wrench (not shown) or the like in the flange tightening practice means 1. The strain generated at that time is detected by a strain sensor 7 disposed on the bolt 6 as shown in FIG.
　フランジ締付け練習手段１の各ボルト６を締付けることによって発生した各ボルト６の歪は、図３に記載の「ボルトの歪のデータ化」に記載されているように演算手段２でデータ化される。 The distortion of each bolt 6 generated by tightening each bolt 6 of the flange tightening practice means 1 is converted into data by the computing means 2 as described in "Data conversion of bolt distortion" shown in FIG. .
　次に、演算手段２でデータ化されたデータは、図３の「データの視認化」に記載されているように、表示手段３によって視認化される。表示手段３に表示された歪は、例えば、図４に示されるように画像で表示することができ、当該画像により、例えば、トルクレンチなどでは十分に把握することができない微妙な締付け力の変化による歪の変化を視覚によって認識し、把握することができる。 Next, the data converted into data by the calculation means 2 is visualized by the display means 3 as described in “Data Visualization” in FIG. The distortion displayed on the display means 3 can be displayed as an image as shown in FIG. 4, for example, and a subtle change in tightening force that cannot be sufficiently grasped by, for example, a torque wrench due to the image. It is possible to recognize and grasp the change in distortion caused by vision.
　図４は、本発明のフランジ締付け実習システムを用いてボルト６を締付ける際に発生した歪を視認化させたときの画像の一例を示す。図４に示されている画像では、使用されているボルト６の数は８本であり、時計回りに１～８の符号が記載されている。 FIG. 4 shows an example of an image when the distortion generated when the bolt 6 is tightened using the flange tightening training system of the present invention is visualized. In the image shown in FIG. 4, the number of bolts 6 used is eight, and codes 1 to 8 are written clockwise.
　図４に示された結果から、符号７および８が付されている歪が小さいことから、符号７および８におけるボルトの締付け力が小さいことがわかる。したがって、実習者は、図３に示されるように、「データの視認化」によって確認された歪データに基づいて、例えば、表示手段３を見ながら「フランジ締付け練習」にて再度、符号７および８におけるボルトの歪が他のボルトの歪と同等となるように、締付け力を適宜微調整することができる技術を実体験に基づいて身につけることができる。 From the results shown in FIG. 4, it can be seen that the tightening force of the bolts at 7 and 8 is small because the strains denoted by 7 and 8 are small. Therefore, as shown in FIG. 3, the practitioner again, based on the strain data confirmed by “visualization of data”, again, for example, in the “flange tightening practice” while viewing the display means 3, the reference numeral 7 and Based on the actual experience, it is possible to acquire a technique capable of finely adjusting the tightening force so that the distortion of the bolt at 8 is equal to the distortion of the other bolts.
　このように、本発明のフランジ締付け実習システムを用いることにより、実習者は、歪データを介してフランジＡ４とフランジＢ５とを締付ける際の技術をリアルタイムに把握することができるので、熟練した作業者がいなくても、表示装置３の表示画面を見ながら実習を通じてボルト６を適切に締付けるために必要な技術を身につけることができる。 In this way, by using the flange tightening training system of the present invention, the trainee can grasp the technique for tightening the flange A4 and the flange B5 in real time via the strain data, so that the skilled worker Even if it does not exist, it is possible to acquire a technique necessary for appropriately tightening the bolt 6 through practice while viewing the display screen of the display device 3.
　１　フランジ締付け練習手段
　２　演算手段
　３　表示手段
　４　フランジＡ
　５　フランジＢ
　６　ボルト
　７　歪センサ
　８　配線
　９　配線 1 Flange tightening practice means 2 Calculation means 3 Display means 4 Flange A
5 Flange B
6 bolts 7 strain sensor 8 wiring 9 wiring

Claims (1)

  1. 　配管同士の接続部のフランジをボルトで締付ける際に適切な締付けを実習させるためのフランジ締付け実習システムであって、フランジＡと、フランジＢと、フランジＡとフランジＢとを締付けるためのボルトとを有し、当該ボルトを締付ける際に発生する歪を検知するための歪センサーが当該ボルトに配設されているフランジ締付け練習手段と、当該フランジ締付け練習手段の各ボルトを締付けることによって発生した各ボルトの歪をデータ化させるための演算手段と、当該演算手段でデータ化されたデータを視認化させるための表示手段とを備えていることを特徴とするフランジ締付け実習システム。 A flange tightening training system for practicing proper tightening when tightening a flange of a connection portion between pipes with a bolt, and comprising a flange A, a flange B, and a bolt for tightening the flange A and the flange B And a flange tightening practice means in which a strain sensor for detecting strain generated when the bolt is tightened is disposed on the bolt, and each bolt generated by tightening each bolt of the flange tightening practice means A flange tightening training system comprising: a calculation means for converting the distortion of the data into data; and a display means for visualizing the data converted into data by the calculation means.
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