WO2022009865A1 - ガスケット、その管理の方法、システムおよびプログラム - Google Patents

ガスケット、その管理の方法、システムおよびプログラム Download PDF

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Publication number
WO2022009865A1
WO2022009865A1 PCT/JP2021/025407 JP2021025407W WO2022009865A1 WO 2022009865 A1 WO2022009865 A1 WO 2022009865A1 JP 2021025407 W JP2021025407 W JP 2021025407W WO 2022009865 A1 WO2022009865 A1 WO 2022009865A1
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WO
WIPO (PCT)
Prior art keywords
gasket
load
shape
information
flanges
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.)
Ceased
Application number
PCT/JP2021/025407
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
淑子 赤松
清華 戸田
聡美 高橋
正 寺崎
義太朗 坂田
和也 菊永
正浩 江頭
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.)
National Institute of Advanced Industrial Science and Technology AIST
Valqua Ltd
Original Assignee
National Institute of Advanced Industrial Science and Technology AIST
Valqua 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 National Institute of Advanced Industrial Science and Technology AIST, Valqua Ltd filed Critical National Institute of Advanced Industrial Science and Technology AIST
Priority to JP2022535333A priority Critical patent/JPWO2022009865A1/ja
Priority to KR1020227043628A priority patent/KR20230036064A/ko
Priority to CN202180048450.6A priority patent/CN115917191A/zh
Publication of WO2022009865A1 publication Critical patent/WO2022009865A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes

Definitions

  • the present disclosure relates to, for example, gaskets used for fastening piping systems and management techniques thereof.
  • Tightening torque and bolt axial force value applied to the flange by bolts are used to tighten the gasket.
  • Tightening torque and bolt axial force value are information on tightening bolts that tighten between flanges.
  • the reason why the bolt tightening torque and axial force value are used for gasket tightening management is that the bolt is a means of tightening between flanges, and that the tightening force from the bolt can be easily grasped by measuring the bolt strain. be.
  • the tightening force of the bolt acts on the flange, and only indirectly acts on the gasket through the flange. That is, the flange receives a load due to the tightening of the bolt, and this load merely acts on the gasket through the flange.
  • the torque value and the axial force value applied to the bolt are the loads acting on a part of the flange, and do not represent the surface pressure acting on the gasket.
  • the torque value and axial force value obtained from the bolt are information about the bolt, and it cannot be said that the surface pressure received by the gasket is measured.
  • the torque value and axial force value of the bolt are only indirect information and are only a guideline for the surface pressure.
  • Patent Documents 1 and 2 do not disclose or suggest such a problem.
  • the configurations disclosed in Patent Documents 1 and 2 cannot solve such a problem.
  • the purpose of the present disclosure is to directly observe the shape change of the gasket that receives the load between the flanges based on the above-mentioned problems and the above-mentioned findings, and to improve the gasket and its management technique by using the observation result for the management of the tightening of the gasket. There is something in it.
  • an outer cut is provided in the non-restraint portion adjacent to the restraint portion restrained between the flanges, and the outer cut is provided by the load received by the restraint portion.
  • the shape changes.
  • a step of installing a gasket having an outer cut whose shape changes by receiving a load between flanges, and the gasket constrained between the flanges are managed based on the shape.
  • a measuring means for measuring the shape of the outer cut provided on the gasket and management information for managing the tightening between the flanges based on the shape are generated. It includes a management server and an information presentation unit that presents the management information.
  • the shape information of the outer cut provided in the gasket which is restrained between the flanges and receives a load is acquired.
  • the computer realizes a function, a function of generating management information for managing the tightening of the gasket based on the shape information, and a function of presenting the management information.
  • the load received by the gasket from between the flanges causes strain on the gasket, and this strain can be manifested as a change in the shape of the outer cut of the gasket, and can be visualized as a change in the shape of the outer cut and easily recognized.
  • A is a plan view showing a gasket according to the first embodiment
  • B is an enlarged perspective view showing an IB portion of A.
  • It is a figure which shows the flange fastening part which concerns on 1st Embodiment.
  • A is a diagram showing an enlarged outer cut portion
  • B is a diagram showing a change in the shape of the outer cut.
  • a and B are diagrams showing a modified example of the outer cut.
  • It is a figure which shows the gasket management system which concerns on 1st Embodiment.
  • It is a figure which shows the gasket management database.
  • A is a diagram showing a comparative example
  • B is a diagram showing the setting of the shape observation unit.
  • It is a figure which shows the relationship between the shape change of a comparative example, and a load.
  • It is a figure which shows the relationship between the shape change of an Example and a load.
  • FIG. 1 shows the gasket 2 according to the first embodiment.
  • the configuration shown in the figure is an example, and the present disclosure is not limited to such a configuration.
  • the X-axis, the Y-axis, and the Z-axis are shown together as an example.
  • This gasket 2 is, for example, a sheet gasket processed with a material containing a polytetrafluoroethylene resin (PTFE: Polytetrafluoroethylene) and a filler.
  • PTFE polytetrafluoroethylene resin
  • a resin material or rubber material other than PTFE may be used for the gasket 2.
  • the gasket 2 has a restraining portion 2-1 on the inner diameter side and a non-constraining portion 2-2 on the outer diameter side.
  • the restraint portion 2-1 is a region that is in contact with the flanges 16-1 and 16-2 (FIGS. 2 and 3) and receives a load F from between the flanges 16-1 and 16-2.
  • the unconstrained portion 2-2 is a region that does not contact between the flanges 16-1 and 16-2.
  • Outer cuts 4-1, 4-2, 4-3, 4-4 (hereinafter, simply referred to as outer cut 4 when a specific position is not specified) are formed in the non-restraint portion 2-2. There is.
  • Each outer cut 4 is a notch portion in which the outermost edge portion of the gasket 2 is partially cut out and released, and is a means for facilitating the detection of a change in the shape of the gasket 2. Therefore, each outer cut 4 constitutes a shape observation unit for observing a shape change of the gasket 2 when a load F is applied to the restraint portion 2-1.
  • ⁇ Outer cut 4> B in FIG. 1 is an enlarged view of the outer cut 4 in the IB portion of A in FIG.
  • a vertical groove is cut by a certain length L from the peripheral surface of the outermost edge portion of the gasket 2 toward the center and released by a width W, and this vertical groove is formed on the upper and lower surfaces of the gasket 2. It penetrates. Therefore, in this outer cut 4, the vertical surface portion 6 and the facing surface portions 8-1 and 8-2 are provided in the unconstrained portion 2-2 of the gasket 2.
  • the vertical surface portion 6 is exposed toward the peripheral surface of the gasket 2, and the facing surface portions 8-1 and 8-2 having a length L and a height D face each other with a constant width W.
  • the height D is the thickness of the gasket 2 before deformation. That is, the opening width between the facing surface portions 8-1 and 8-2 of the outer cut 4 can be measured.
  • each outer cut 4 may be set at a plurality of locations on the gasket 2. It is preferable that the set position is not biased in order to avoid the influence of the elastic interaction received from the flanges 16-1 and 16-2 and to improve the observation accuracy of the shape change.
  • each outer cut 4 is set at four locations on the X-axis and the Y-axis, and observation of shape change can be observed in a wide range.
  • FIG. 2 shows a notch in the flange fastening portion 12 including the gasket 2.
  • the flange fastening portion 12 is an example, and the present disclosure is not limited to the configuration shown in FIG.
  • the flange fastening portion 12 includes a flange 16-1 on the pipeline 14-1 side, a flange 16-2 on the pipeline 14-2 side (FIG. 3), a gasket 2, a plurality of bolts 18, and a nut 20.
  • the flange 16-1 is integrally formed with the end face of the pipeline 14-1, and similarly, the flange 16-2 is integrally formed with the end face of the pipeline 14-2.
  • the flanges 16-1 and 16-2 have a larger diameter than the pipelines 14-1 and 14-2, and a plurality of bolts 18 and nuts 20 are attached at predetermined angular intervals.
  • a gasket 2 is installed between the flanges 16-1 and 16-2 inside the bolt 18 and the nut 20.
  • the gasket 2 constitutes a sealing member for the flange fastening portion 12. Therefore, by tightening the bolts 18 and nuts 20, the gasket 2 is loaded by the load F applied to the flanges 16-1 and 16-2, and the gaskets 2 are sealed together with the fastening of the pipelines 14-1 and 14-2. ..
  • the restraining portion 2-1 of the gasket 2 is sandwiched between the flanges 16-1 and 16-2, and is in contact with the flanges 16-1 and 16-2 to be restrained.
  • the unconstrained portion 2-2 protrudes around the restraining portion 2-1 and does not contact the flanges 16-1 and 16-2, that is, it is not constrained by the flanges 16-1 and 16-2.
  • the restraint portion 2-1 receives the load F from the flanges 16-1 and 16-2 by tightening the bolt 18 and the nut 20.
  • the non-restraint portion 2-2 constitutes a free end that does not receive the load F.
  • each outer cut 4 of the non-restraint portion 2-2 constitutes a portion for observing the shape change appearing on the gasket 2.
  • FIG. 3 shows the III-III line cut end face of FIG.
  • the restraining portion 2-1 of the gasket 2 is sandwiched and restrained between the gasket seats 22 of the flanges 16-1 and 16-2.
  • the unconstrained portion 2-2 protrudes into the gap 24 between the flanges 16-1 and 16-2.
  • the non-constrained portion 2-2 is integrated with the restraint portion 2-1 and is supported between the flanges 16-1 and 16-2, and is a free end protruding into the gap 24. That is, the unrestrained portion 2-2 is in a cantilever state.
  • Strains and deformations that occur in the restraint portion 2-1 when the load F is received from the flanges 16-1 and 16-2 appear as shape changes in the non-constraint portion 2-2. This shape change can be easily observed by the outer cut 4. That is, the shape change of the gasket 2 that appears in the non-constrained portion 2-2 is distortion or deformation due to being pushed out from between the gasket seats 22, and the restrained portion 2-1 of the gasket 2 is from the flanges 16-1 and 16-2. Represents the load received.
  • the outer cut 4 is formed in order to make the strain generated in the unconstrained portion 2-2 manifest as a remarkable shape change and facilitate its observation.
  • the X-axis is taken in the tangential direction of the gasket 2
  • the Y-axis is taken in the center of the outer cut 4
  • the Z-axis is taken in the direction in which the load F is applied
  • the flange 16-1 is attached to the restraint portion 2-1.
  • This shape change includes a shape change in the circumferential direction of the gasket 2.
  • the unconstrained portion 2-2 is expanded in the radial direction as shown by arrows a and b.
  • ⁇ Y1 the unconstrained portion 2-2 spreads in the radial direction
  • ⁇ Y2 the vertical surface portion 6 of the outer cut 4 indicates the displacement in the radial direction.
  • the width W of the vertical surface portion 6 is expanded to the width W1
  • the width W of the end portions of the facing surface portions 8-1 and 8-2 is expanded to the width W2 (> W1).
  • Such a shape change increases or decreases in proportion to the load F received by the gasket 2 from the flanges 16-1 and 16-2.
  • the shape change in the XY-axis direction is illustrated, but it goes without saying that the shape change in the Z-axis direction and the thickness direction also appears in the shape of the outer cut 4.
  • the strain generated in the restrained portion 2-1 and the non-constrained portion 2-2 by receiving the load F from the flanges 16-1 and 16-2 is increased to the shape change of the outer cut 4 and becomes apparent, and its observation is easy. Can be.
  • outer cut 4 is not limited to the rectangular shape including the vertical surface portion 6 and the facing surface portions 8-1 and 8-2 shown in FIG. 1B.
  • a and B in FIG. 5 show a modification of the outer cut 4.
  • the parts corresponding to B in FIG. 1 are designated by the same reference numerals.
  • the outer cut 4 may have the facing surface portions 8-1 and 8-2 formed on non-parallel surfaces except for the vertical surface portion 6, and the cross section may be formed in a “V” shape. Then, for example, as shown in B of FIG. 5, the vertical surface portion 6 may be formed on a curved surface. Even in such a form, the shape change that occurs in the non-constrained portion 2-2 when the load F is received by the restrained portion 2-1 can be easily observed from the outer cut 4.
  • a sensor member such as metal or resin may be installed in the space portion of the outer cut 4, and the shape change of the outer cut 4 may be extracted from this sensor member.
  • the management process of the gasket 2 is an example of the management method of the present disclosure.
  • This management step includes a generation step S1 of the restraint portion 2-1 and the non-constraint portion 2-2, an addition step S2 of the load F, a shape information acquisition step S3, and a presentation step S4 of the shape information and the like.
  • S1 to S4 attached to each step exemplify the order of each step, and the terms quoted are merely used for convenience.
  • Load F addition step S2 In the gasket 2, the load F is applied to the restraint portion 2-1 restrained by the flanges 16-1 and 16-2 by tightening the flanges 16-1 and 16-2. In response to this load F, the gasket 2 causes strain in the restraining portion 2-1 and causes a shape change in the non-constraining portion 2-2.
  • Shape information acquisition step S3 Regarding the shape change appearing in the unconstrained portion 2-2, the management server 30 (FIG. 6) receives the detection output of the strain sensor 28 and acquires the shape information of the outer cut 4.
  • the management server 30 generates presentation information including shape information and presents it by the information presentation unit 32 (FIG. 6).
  • the shape information acquired in the shape information acquisition step S3 may be subjected to Nth derivative (multi-step differentiation) to make the change points of the shape information stand out. If this processing result is reflected in the presentation information in the presentation step S4, the change point of the shape information can be clarified.
  • FIG. 6 shows a gasket management system 26 for executing a management process by information processing.
  • the configuration shown in FIG. 6 is an example, and the present disclosure is not limited to such a configuration.
  • the same parts as those in FIG. 3 are designated by the same reference numerals.
  • This gasket management system 26 includes a strain sensor 28, a management server 30, and an information presentation unit 32.
  • the strain sensor 28 measures the shape change appearing in the outer cut 4 of the gasket 2 and outputs a detection signal indicating this shape change.
  • the strain sensor 28 is an example of a means for detecting a shape change and converting it into an electric signal.
  • a laser displacement meter, a camera, or the like may be used as the means for observing the shape change.
  • the laser displacement meter shines a laser beam on the outer cut 4, detects a change in the shape of the outer cut 4 with the reflected light, and observes the amount of the change.
  • the camera captures the outer cut 4, and the management server 30 detects the strain appearing in the outer cut 4 by the number of pixels, and acquires the shape information according to the strain.
  • the management server 30 is composed of a computer having a communication function.
  • the management server 30 includes a processor 34, a storage unit 36, an input / output (I / O) unit 38, and a communication unit 40.
  • the processor 34 executes an OS (Operating System) and a management program in the storage unit 36, and performs information processing for gasket management.
  • the storage unit 36 includes a storage medium for storing the OS and the management program.
  • the gasket management database (DB) 42 (FIG. 7) is stored in the storage unit 36.
  • the communication unit 40 inputs and presents information in cooperation with a management terminal (not shown).
  • the management terminal is also used for acquiring shape information and writing and reading the gasket management DB 42.
  • the information presentation unit 32 presents management information including load information and determination information related to the shape information under the control of the management server 30.
  • ⁇ Information processing of management server 30> For information processing of the management server 30, a) Processing for capturing the detection output of the strain sensor 28 b) Acquisition of shape information of the outer cut 4 c) Generation of presentation information including shape information d) Processing such as presentation of estimation information by the information presentation unit 32 is included.
  • FIG. 7 shows an example of the gasket management DB 42.
  • the gasket management file 44 is stored in the gasket management DB 42.
  • the gasket management file 44 includes a gasket information unit 46, an outer cut information unit 47, a time information unit 48, a load information unit 50, a strain sensor information unit 52, a detection information unit 54, a determination information unit 56, and a history information unit 58. It is set.
  • the gasket information unit 46 stores specification information for specifying the gasket 2.
  • the outer cut information unit 47 stores outer cut information such as the shapes representing the shapes of the outer cuts 4-1, 4-2, 4-3, and 4-4, and their arrangement positions and sizes.
  • Time information such as the measurement date and time is stored in the time information unit 48.
  • the load information unit 50 stores load information representing the load F applied to the gasket 2 from the flanges 16-1 and 16-2.
  • the determination information unit 56 stores determination information representing the determination result of the measurement information of the outer cut 4 and the determination result such as the load information estimated from the measurement information.
  • History information such as acquisition of shape information is stored in the history information unit 58.
  • the restraining portion 2-1 receives the load F from the flanges 16-1 and 16-2, and the strain generated in the restraining portion 2-1 is applied to the non-constraining portion 2-2. It can be visualized as a shape change of the outer cut 4. That is, the shape change corresponding to the load F can be easily observed from the outer cut 4.
  • the shape information of the outer cut 4 can be acquired from the outer cut 4 by the detection output of each strain sensor 28, and the load received by the gasket 2 from the flanges 16-1 and 16-2 can be estimated from the shape change.
  • the strain of the gasket 2 can be observed by the shape change of the outer cut 4, and the load received by the gasket 2 is estimated from the shape change without being affected by the tightening torque and the axial force of the bolt 18, and the gasket 2 is used.
  • the tightening state of can be determined.
  • the management method of the gasket 2 according to the second embodiment further includes an estimation step S5 based on inflection point information in the management step of the first embodiment.
  • the shape information including the shape change appearing in the outer cut 4 includes the inflection point (FIGS. 9 and 10) information for a specific load, and the management server 30 starts from the inflection point.
  • the tightened state of the gasket 2, that is, the surface pressure that the gasket 2 receives from the flanges 16-1 and 16-2 can be estimated.
  • the shape information can include inflection points as peculiar information of the load.
  • the load F that is, the surface pressure can be estimated from the shape change of the outer cut 4 received by the gasket 2, and the setting and adjustment of the load on the gasket 2 can be facilitated.
  • FIG. 8A shows the gasket 2 according to the comparative example.
  • the restrained portion 2-1 and the non-constrained portion 2-2 are set to have the same width or substantially the same width and are concentrically formed, and unlike the embodiment, the outer cut 4 is not provided.
  • shape observation units 60-1, 60-2, 60-3, and 60-4 are set at positions corresponding to the outer cut 4 of the embodiment.
  • the shape observation units 60-1, 60-2, 60-3, and 60-4 are arranged in the unconstrained unit 2-2 at an angular interval of 90 degrees at a center angle.
  • Table 1 shows the shape of the outer cut 4 of the gasket 2 and the measurement results thereof according to the embodiment.
  • the outer cut 4 is not formed.
  • m2 is the deformation of the gasket 2 in the 45 (deg) direction
  • This shape change has an inflection point, and the optimum load F can be specified from the relationship between the load F applied to the gasket 2 and the shape change inflection point, and can be used for judgment information on the completion of initial fastening.
  • FIG. 10 shows the relationship between the shape change appearing in the gasket 2 according to the embodiment and the load, with the load [kN] on the horizontal axis and the opening width [mm] of the outer cut 4 on the vertical axis.
  • Table 2 shows the relationship between the load of the outer cut 4 and the opening width W2.
  • the restraint portion 2-1 receives a load F from the flanges 16-1 and 16-2, and when this load increases, the opening width of the outer cut 4 increases according to the load.
  • This shape change has a remarkable inflection that is different from the comparative example. Therefore, according to the gasket 2 according to the embodiment, if the inflection point of the shape change appearing in each outer cut 4 or any of the outer cuts 4 is targeted, the relationship between the shape change and the load can be specified. ..
  • the gasket 2 it is possible to generate an inflection point in the shape information corresponding to a specific load.
  • a specific load can be estimated from the inflection point of the shape information, which can be used as a criterion for determining the completion of tightening.
  • the shape change appearing on the gasket 2 can be observed by the opening width W2 of the outer cut 4. That is, the opening width W2 of the outer cut 4 can be measured in advance for each load of the gasket 2, and the load can be easily estimated by comparing the opening width W2 with the measured value. In this estimation, the opening width W2 of the outer cut 4 is stored in a database for each load, and the load can be easily and accurately estimated by comparing with the measured value of the shape change.
  • the shape change appearing in the outer cut 4 of the non-restraint portion 2-2 can be measured, and the shape information representing the load can be obtained from the gasket 2. .. Therefore, the load can be estimated from the shape change of the gasket 2 due to the load F applied to the flanges 16-1 and 16-2 without being affected by the bolt 18 and the flanges 16-1 and 16-2.
  • the gasket 2 can also handle various diameters and thicknesses.
  • a management system that manages flange fastenings with gaskets between flanges. It is provided with a restraining portion that is restrained between the flanges and receives a load, a non-constraining portion that is not restrained between the flanges, and a notch portion provided in the non-constraining portion.
  • a gasket that receives the load and causes a change in the notch,
  • a measuring instrument that measures changes in the notch in contact with or without contact with the gasket.
  • a management server that acquires measurement information from the measuring instrument and generates management information including the tightening force between the flanges.
  • An information presenting unit that presents the management information in relation to the gasket or the flange fastening portion, and A management system.
  • a recording medium on which a program to be realized by a computer is recorded A function to acquire shape information including changes that occur in the notch in the unrestrained portion of the gasket due to the load being restrained between the flanges and receiving the load from the flanges. A function to generate management information including the tightening force between the flanges based on the shape information, and The function of presenting the management information and A recording medium on which a program for realizing the above-mentioned computer is recorded.
  • the vertical surface portion 6 and the facing surface portions 8-1 and 8-2 are exemplified.
  • This form is an example, and has a shape having no vertical surface portion 6, a V-shaped shape in which the facing surface portions 8-1 and 8-2 are non-parallel, and a notch shape having a polygonal shape or a rectangular shape. May be good.
  • the load F applied to the gasket 2 sandwiched between the flanges 16-1 and 16-2 and the shape change of the gasket 2 are described.
  • the load F applied to the gasket 2 is equivalent to the surface pressure received by the gasket 2 from the flanges 16-1 and 16-2, and there is no qualitative difference between the two. That is, it is possible to estimate the surface pressure of the gasket 2 from the relationship between the load F applied to the gasket 2 and the shape change appearing in the outer cut 4.
  • the management server 30 may generate presentation information by processing the acquired shape information by multi-step differentiation or the like, and the information presentation unit may be used.
  • a display unit that clearly indicates the change point may be presented in 32 (FIG. 6).
  • the method of management thereof, the system and the program the shape change of the outer cut deformed by receiving the load F from the flange can be easily observed, and the load is not affected by the tightening state of the bolt or the flange. And surface pressure can be estimated, and the tightening state of the gasket can be controlled.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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  • General Physics & Mathematics (AREA)
  • Gasket Seals (AREA)
PCT/JP2021/025407 2020-07-08 2021-07-06 ガスケット、その管理の方法、システムおよびプログラム Ceased WO2022009865A1 (ja)

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JP2022535333A JPWO2022009865A1 (https=) 2020-07-08 2021-07-06
KR1020227043628A KR20230036064A (ko) 2020-07-08 2021-07-06 개스킷, 그 관리의 방법, 시스템 및 프로그램
CN202180048450.6A CN115917191A (zh) 2020-07-08 2021-07-06 衬垫及其管理方法、系统以及程序

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Citations (7)

* Cited by examiner, † Cited by third party
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JPS58144154U (ja) * 1982-03-24 1983-09-28 ヨツギ株式会社 ガスケツト
JPH0583576U (ja) * 1992-04-13 1993-11-12 株式会社川本製作所 管フランジ用ガスケット
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