JP2013024589A

JP2013024589A - Inspection jig of tubular member

Info

Publication number: JP2013024589A
Application number: JP2011156801A
Authority: JP
Inventors: Makoto Maeda; 誠前田; Ikuo Takaya; 育生高谷; Kyoichi Nakagishi; 享一中岸
Original assignee: Sumitomo Seika Chemicals Co Ltd
Current assignee: Sumitomo Seika Chemicals Co Ltd
Priority date: 2011-07-15
Filing date: 2011-07-15
Publication date: 2013-02-04
Anticipated expiration: 2031-07-15
Also published as: JP5828698B2

Abstract

【課題】取り扱いが容易であり、管状部材の検査を少ない工費、工期、及び労力で行うことを可能にする検査用治具を提供する。
【解決手段】本発明の検査用治具１０は、タンク本体１４の内外を連通する管状部材１２をタンク本体１４の内部側で密閉する内閉鎖部材１９と、管状部材１２に検査用流体を流入させるための流入口３９を有しかつ管状部材１２をタンク本体１４の外部側で密閉する外閉鎖部材２０と、管状部材１２に挿入されるとともに、長手方向の一端部に内閉鎖部材１９が連結され、長手方向の他端部に外閉鎖部材２０が着脱可能に連結される連結部材２１と、を備える。
【選択図】図２An inspection jig that is easy to handle and enables inspection of a tubular member with low construction cost, construction period, and labor.
An inspection jig of the present invention includes an inner closing member that seals a tubular member that communicates inside and outside of a tank main body on the inner side of the tank main body, and an inspection fluid that flows into the tubular member. And an outer closing member 20 that seals the tubular member 12 on the outside of the tank body 14, and an inner closing member 19 connected to one end in the longitudinal direction. And a connecting member 21 to which the outer closing member 20 is detachably connected to the other end portion in the longitudinal direction.
[Selection] Figure 2

Description

本発明は、タンクに設けられるノズル等の管状部材に対して漏洩検査を行うために使用される検査用治具に関する。 The present invention relates to an inspection jig used for performing a leakage inspection on a tubular member such as a nozzle provided in a tank.

気体や液体等の流体を扱う工場やプラント等の施設には、流体を収容するためのタンクが設置されており、このタンクは、施工時に耐圧漏洩検査が実施される。また、運転後、タンクの補修が行なわれたときにも同様の検査が実施される。この耐圧漏洩検査として、タンク内に水を充満させて漏れや変形の有無を検査する水張り検査が知られている。 Facilities such as factories and plants that handle fluids such as gas and liquid are provided with tanks for storing fluids, and these tanks are subjected to pressure leak inspection during construction. The same inspection is also performed when the tank is repaired after operation. As this pressure leak test, a water filling test is known in which a tank is filled with water to check for leaks and deformation.

しかし、この水張り検査は、タンクの容量と同じ大量の水が必要であり、また検査後にタンクの内部を乾燥させるために長時間を要する。さらに、タンクの補修後に検査を行う場合、タンクの内部に足場が組まれていると、足場を解体しタンクから撤去するという作業も必要となる。したがって、この水張り検査は、多大な工費、工期、及び労力が必要であった。
また、従来は、タンクのノズルのようなごく一部だけを補修した場合であっても、タンク全体の水張り検査を行っていたので、非常に不経済であった。 However, this water filling inspection requires a large amount of water that is the same as the capacity of the tank, and it takes a long time to dry the inside of the tank after the inspection. Furthermore, when the inspection is performed after the tank is repaired, if a scaffold is built inside the tank, it is necessary to disassemble the scaffold and remove it from the tank. Therefore, this water filling inspection requires a great amount of work cost, work period, and labor.
Conventionally, even when only a small part such as a tank nozzle is repaired, the entire tank is inspected for water filling, which is very uneconomical.

一方、下記特許文献１には、タンクのノズルに接続された配管の耐圧検査用として用いることができる治具が開示されている。この治具は、タンクの内部側におけるノズルの端部を密閉するものであり、タンクの内部側におけるノズルの端部に挿入されるシール用ゴム袋と、当該端部の外周面に形成された雄ネジに螺合して取り付けられるキャップと、キャップに連結されこのキャップと共同してゴム袋の管軸方向の膨張を阻止する押さえ板と、ゴム袋に接続された空気チューブと、空気チューブを介してゴム袋に気体を供給する空気ボンベと、キャップに接続されたフレキシブルワイヤと、フレキシブルワイヤを介してキャップに駆動力を伝える駆動源と、を備えている。 On the other hand, Patent Document 1 below discloses a jig that can be used for pressure resistance inspection of a pipe connected to a nozzle of a tank. This jig seals the end of the nozzle on the inner side of the tank, and is formed on the rubber bag for sealing inserted into the end of the nozzle on the inner side of the tank and the outer peripheral surface of the end. A cap that is screwed onto a male screw, a pressure plate that is connected to the cap and prevents the expansion of the rubber bag in the tube axis direction together with the cap, an air tube connected to the rubber bag, and an air tube And an air cylinder for supplying gas to the rubber bag, a flexible wire connected to the cap, and a drive source for transmitting a driving force to the cap via the flexible wire.

そして、ノズルに接続された配管の耐圧検査を行うには、フレキシブルワイヤを介して駆動源の回転動力をキャップに伝え、このキャップを配管の雄ネジに螺合するとともに、空気チューブを介して空気ボンベからゴム袋に気体を送ることによって配管の端部を密閉する。そして、配管内に水を満たして所定の水圧を加え、これによる影響を確認することによって検査が行われる。 In order to perform pressure resistance inspection of the pipe connected to the nozzle, the rotational power of the drive source is transmitted to the cap through the flexible wire, and the cap is screwed into the male screw of the pipe and air is supplied through the air tube. The end of the pipe is sealed by sending gas from the cylinder to the rubber bag. Then, the inspection is performed by filling the pipe with water, applying a predetermined water pressure, and checking the influence of this.

実公昭６３−３９６２２号公報Japanese Utility Model Publication No. 63-39622

タンクのノズルを補修した後、特許文献１に記載のような技術を用いてノズルを密閉し、ノズルのみに対して検査を行えば、タンク全体に対する水張り検査を行わなくても済み、検査に要する工費、工期、及び労力を大幅に削減することが可能になると考えられる。
しかしながら、特許文献１の技術は、ノズルに雄ネジが形成されていない既設のタンクには治具を適用することができない。また、駆動源や空気ボンベはタンクの外に設置しなければならないので、これらをタンク内のキャップやゴム袋に接続するために非常に長いフレキシブルワイヤや空気チューブが必要となる。そのため、治具自体の取り扱いも煩雑になる。 After repairing the nozzle of the tank, if the nozzle is sealed using a technique as described in Patent Document 1 and only the nozzle is inspected, it is not necessary to perform a water filling inspection on the entire tank, which is necessary for the inspection. The construction cost, construction period, and labor can be greatly reduced.
However, the technique of Patent Document 1 cannot apply a jig to an existing tank in which a male screw is not formed on a nozzle. Further, since the drive source and the air cylinder must be installed outside the tank, very long flexible wires and air tubes are required to connect them to the cap and the rubber bag in the tank. Therefore, handling of the jig itself becomes complicated.

本発明は、上記の実情に鑑みてなされたものであり、取り扱いが容易であり、管状部材の検査を少ない工費、工期、及び労力で行うことを可能にする管状部材の検査用治具を提供することを目的とする。 The present invention has been made in view of the above circumstances, and provides a tubular member inspection jig that is easy to handle and enables inspection of the tubular member with low construction cost, construction period, and labor. The purpose is to do.

（１）本発明に係る管状部材の検査用治具は、タンク本体の内外を連通する管状部材を前記タンク本体の内部側で密閉する内閉鎖部材と、
前記管状部材に検査用流体を流入させるための流入口を有し、かつ前記管状部材を前記タンク本体の外部側で密閉する外閉鎖部材と、
前記管状部材に挿入されるとともに、長手方向の一端部に前記内閉鎖部材が連結され、長手方向の他端部に前記外閉鎖部材が着脱可能に連結される連結部材と、を備えていることを特徴とする。 (1) An inspection jig for a tubular member according to the present invention includes an inner closing member that seals a tubular member communicating between the inside and the outside of a tank body on the inner side of the tank body;
An outer closing member that has an inflow port for allowing inspection fluid to flow into the tubular member, and that seals the tubular member on the outside of the tank body;
A connecting member that is inserted into the tubular member, the inner closing member is connected to one end portion in the longitudinal direction, and the outer closing member is detachably connected to the other end portion in the longitudinal direction. It is characterized by.

本発明の検査用治具は、内閉鎖部材によってタンク本体の内部側で管状部材を密閉し、外閉鎖部材によってタンク本体の外部側で管状部材を密閉し、外閉鎖部材に形成された流入口から検査用流体を流入させることによって、管状部材からの流体の漏洩の有無を検査することができる。したがって、タンク全体の水張り検査を行わなくても、管状部材のみを対象として検査を行うことができる。したがって、当該検査を少ない工費、工期、及び労力で行うことができる。 The inspection jig of the present invention seals the tubular member on the inner side of the tank body by the inner closing member, and seals the tubular member on the outer side of the tank body by the outer closing member, and the inlet formed in the outer closing member It is possible to inspect whether or not the fluid leaks from the tubular member by injecting the inspection fluid from. Therefore, it is possible to inspect only the tubular member without performing the water filling inspection of the entire tank. Therefore, the inspection can be performed with low construction cost, construction period, and labor.

そして、本発明の検査用治具は、タンク本体の内部側に内閉鎖部材を配置しつつ管状部材に連結部材を挿入し、この連結部材の端部を外閉鎖部材に連結することによって容易に管状部材に装着することができる。また、本発明の検査用治具は、内閉鎖部材と外閉鎖部材と連結部材とから非常に簡単な構成とすることができ、特許文献１のようにタンク内外にフレキシブルワイヤや空気チューブを配索する必要もなく、容易に取り扱うことができる。また、内閉鎖部材は、連結部材を介して外閉鎖部材に連結されるので、当該内閉鎖部材を取り付けるために管状部材に加工を施す必要がなく、よって既設のタンクに対しても本発明の検査用治具を適用することが可能となる。 The inspection jig according to the present invention can be easily obtained by inserting the connecting member into the tubular member while disposing the inner closing member on the inner side of the tank body, and connecting the end of the connecting member to the outer closing member. It can be attached to a tubular member. In addition, the inspection jig of the present invention can have a very simple structure including an inner closing member, an outer closing member, and a connecting member. As in Patent Document 1, flexible wires and air tubes are arranged inside and outside the tank. There is no need to search and it can be handled easily. Further, since the inner closing member is connected to the outer closing member via the connecting member, it is not necessary to process the tubular member in order to attach the inner closing member. An inspection jig can be applied.

（２）前記連結部材が、第１連結部を有し、前記外閉鎖部材が、前記第１連結部に連結されるとともに、当該連結に伴って前記連結部材を前記管状部材の管軸方向へ移動させる第２連結部を有し、前記内閉鎖部材が、前記第１連結部と前記第２連結部との連結に伴う前記連結部材の移動によって密閉部位に圧接されるシール部材を有していることが好ましい。
この構成によれば、連結部材の第１連結部と外閉鎖部材の第２連結部とを連結すると同時に、内閉鎖部材のシール部材を密閉部位に圧接することができる。 (2) The connecting member has a first connecting portion, and the outer closing member is connected to the first connecting portion, and the connecting member is moved in the tube axis direction of the tubular member along with the connection. A second connecting portion to be moved; and the inner closing member has a seal member that is pressed against a sealed portion by the movement of the connecting member accompanying the connection between the first connecting portion and the second connecting portion. Preferably it is.
According to this structure, the 1st connection part of a connection member and the 2nd connection part of an outer closure member can be connected, and the seal member of an inner closure member can be press-contacted to a sealing part simultaneously.

（３）前記第１連結部と前記第２連結部とは、互いに螺合可能なネジからなることが好ましい。
これにより、第１連結部と第２連結部との連結で連結部材を管軸方向に移動させる構成を容易に実現することができる。 (3) It is preferable that the said 1st connection part and the said 2nd connection part consist of a screw which can be screwed together.
Thereby, the structure which moves a connection member to a pipe-axis direction by connection with a 1st connection part and a 2nd connection part is easily realizable.

（４）前記内閉鎖部材は、前記タンク本体の内部側における前記管状部材の端面に対向する押さえ部材と、当該押さえ部材と前記端面との間に介装される前記シール部材と、を有していることが好ましい。
このような構成によって、タンク本体の内部側における管状部材の端部を内閉鎖部材によって直接的に密閉することができる。 (4) The inner closing member includes a pressing member facing the end surface of the tubular member on the inner side of the tank body, and the seal member interposed between the pressing member and the end surface. It is preferable.
With such a configuration, the end of the tubular member on the inner side of the tank body can be directly sealed by the inner closing member.

（５）前記内閉鎖部材は、一側部が開口した椀形状に形成され、かつ前記タンク本体の内部側において前記管状部材の端部をその周囲も含めて被覆する被覆部材と、この被覆部材の開口端面と前記タンク本体の内面との間に介装される前記シール部材と、を有していることが好ましい。
この構成によれば、タンク本体の内部側における管状部材の端部をその周囲を含めて内閉鎖部材によって密閉することができる。そのため、例えば、管状部材とタンク本体との接合部（溶接部）に対しても漏洩の有無を検査することができる。 (5) The inner closing member is formed in a bowl shape with one side opened, and covers the end of the tubular member including its periphery on the inner side of the tank body, and the covering member It is preferable to have the said sealing member interposed between the opening end surface of this, and the inner surface of the said tank main body.
According to this structure, the edge part of the tubular member in the inner side of a tank main body can be sealed with an inner closing member including the circumference | surroundings. Therefore, for example, the presence or absence of leakage can be inspected even at the joint portion (welded portion) between the tubular member and the tank body.

（６）前記内閉鎖部材は、前記管状部材の内周面に嵌合し、かつ前記第１連結部と前記第２連結部との連結に伴う前記連結部材の移動によって管軸方向に圧縮されて前記管状部材の内周面に圧接される前記シール部材を有していることが好ましい。
この構成によれば、内閉鎖部材のシール部材が管状部材の内周面に嵌合されるので、タンク本体の外部側から管状部材の内部にシール部材を挿入することが可能となる。したがって、シール部材を管状部材に装着するためにタンク本体の内部に作業者が入り込む必要が無く、検査用治具の装着をより容易に行うことができる。 (6) The inner closing member is fitted in the inner peripheral surface of the tubular member and is compressed in the tube axis direction by the movement of the connecting member accompanying the connection between the first connecting portion and the second connecting portion. It is preferable that the sealing member be pressed against the inner peripheral surface of the tubular member.
According to this configuration, since the seal member of the inner closing member is fitted to the inner peripheral surface of the tubular member, the seal member can be inserted into the tubular member from the outside of the tank body. Therefore, it is not necessary for an operator to enter the inside of the tank body in order to attach the seal member to the tubular member, and the inspection jig can be attached more easily.

（７)前記タンク本体の外部側における前記管状部材の端部には、部品取付用のフランジ部が設けられており、前記外閉鎖部材は、前記フランジ部に連結される被連結部を有していることが好ましい。
管状部材に配管や圧力計等の他の部品を装着するためのフランジ部が設けられている場合には、外閉鎖部材にフランジ部に連結される被連結部を設けることによって、管状部材に対して外閉鎖部材を取り付けるための加工が不要となる。したがって、既設のタンクに対して本発明の検査用治具を適用することが可能となる。 (7) A flange portion for attaching a component is provided at an end portion of the tubular member on the outer side of the tank body, and the outer closing member has a connected portion connected to the flange portion. It is preferable.
When the flange part for mounting other parts such as pipes and pressure gauges is provided on the tubular member, by providing the connected part connected to the flange part on the outer closing member, Thus, processing for attaching the outer closing member becomes unnecessary. Therefore, the inspection jig of the present invention can be applied to the existing tank.

本発明の検査用治具によれば、取り扱いが容易であり、管状部材の検査を少ない工費、工期、及び労力で行うことが可能となる。 According to the inspection jig of the present invention, it is easy to handle, and the inspection of the tubular member can be performed with low construction cost, construction period, and labor.

本発明の第１の実施の形態に係る検査用治具が装着されたタンクの正面図である。It is a front view of the tank with which the inspection jig concerning a 1st embodiment of the present invention was equipped. 検査用治具の断面図である。It is sectional drawing of the jig | tool for an inspection. 分解された検査用治具の断面図である。It is sectional drawing of the inspection jig | tool decomposed | disassembled. 本発明の第２の実施の形態に係る検査用治具の断面図である。It is sectional drawing of the jig | tool for an inspection which concerns on the 2nd Embodiment of this invention. 本発明の第３の実施の形態に係る検査用治具の断面図である。It is sectional drawing of the jig | tool for an inspection which concerns on the 3rd Embodiment of this invention. 本発明の第４の実施の形態に係る検査用治具の断面図である。It is sectional drawing of the jig | tool for an inspection which concerns on the 4th Embodiment of this invention.

以下、本発明の実施の形態を図面を参照して説明する。
図１は、本発明の第１の実施の形態に係る検査用治具１０が装着されたタンク１１の正面図である。タンク１１は、高圧ガスや液化ガス等の気体や液体を収容することが可能であり、タンク本体１４と、このタンク本体１４の外周面に設けられたノズル（管状部材）１２と、マンホール１３とを備えている。ノズル１２は、例えば、配管や圧力計を装着するために使用される。マンホール１３は、作業者がタンク本体１４の内部に入るために使用される。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a tank 11 equipped with an inspection jig 10 according to the first embodiment of the present invention. The tank 11 can store a gas or a liquid such as a high-pressure gas or a liquefied gas. The tank body 14, a nozzle (tubular member) 12 provided on the outer peripheral surface of the tank body 14, a manhole 13, It has. The nozzle 12 is used, for example, for mounting a pipe or a pressure gauge. The manhole 13 is used for an operator to enter the tank body 14.

図２は、検査用治具１０の断面図、図３は、分解された検査用治具１０の断面図である。
本発明の検査用治具１０は、例えば、ノズル１２の外周面を補修した場合等に、その補修部分１００からの漏洩の有無を検査するためにノズル１２に対して装着される。ノズル１２は、その下端部がタンク本体１４に形成された取付孔１５に挿入され、タンク本体１４の内部に僅かに突出している。ノズル１２の外周面とタンク本体１４の内面及び外面とは溶接部１６によって接合されている。またノズル１２は、下部側が厚肉で上部側が薄肉に形成され、上端部には径方向外方に突出するフランジ部１７が形成されている。このフランジ部１７は、運転時に配管や圧力計等を接続するために用いられる。 2 is a cross-sectional view of the inspection jig 10, and FIG. 3 is a cross-sectional view of the inspection jig 10 disassembled.
For example, when the outer peripheral surface of the nozzle 12 is repaired, the inspection jig 10 of the present invention is attached to the nozzle 12 in order to inspect the presence or absence of leakage from the repaired portion 100. The lower end of the nozzle 12 is inserted into a mounting hole 15 formed in the tank body 14 and slightly protrudes into the tank body 14. The outer peripheral surface of the nozzle 12 and the inner surface and outer surface of the tank body 14 are joined by a welded portion 16. Further, the nozzle 12 is formed with a thick lower portion and a thin upper portion, and an upper end portion is formed with a flange portion 17 projecting radially outward. The flange portion 17 is used for connecting a pipe, a pressure gauge, and the like during operation.

検査用治具１０は、タンク本体１４の内部側からノズル１２を閉鎖する内閉鎖部材１９と、タンク本体１４の外部側からノズル１２を閉鎖する外閉鎖部材２０と、内閉鎖部材１９と外閉鎖部材２０とを連結する連結部材２１とを有している。内閉鎖部材１９は、ノズル１２の下端面と略同じ外径の円板状の押さえ板（押さえ部材）２２と、ゴム等の弾性材料から円環状に形成され、押さえ板２２とノズル１２の下端面との間をシールするシール部材２３とを備えている。 The inspection jig 10 includes an inner closing member 19 that closes the nozzle 12 from the inside of the tank main body 14, an outer closing member 20 that closes the nozzle 12 from the outer side of the tank main body 14, and the inner closing member 19 and the outer closing. A connecting member 21 that connects the member 20 is provided. The inner closing member 19 is formed in an annular shape from a disc-like pressing plate (pressing member) 22 having an outer diameter substantially the same as the lower end surface of the nozzle 12 and an elastic material such as rubber, and below the pressing plate 22 and the nozzle 12. And a seal member 23 for sealing between the end faces.

連結部材２１は、上下方向に長い棒状の部材であり、その外周面の全体に雄ネジ部（第１連結部）２４が設けられている。すなわち、連結部材２１は、実質的に長尺の寸切りボルトによって構成されている。そして、連結部材２１の下端部は押さえ板２２に溶接等によって固定されている。 The connecting member 21 is a rod-like member that is long in the vertical direction, and a male screw portion (first connecting portion) 24 is provided on the entire outer peripheral surface thereof. That is, the connecting member 21 is configured by a substantially long sized bolt. The lower end portion of the connecting member 21 is fixed to the pressing plate 22 by welding or the like.

外閉鎖部材２０は、ノズル１２の上端部に取り付けられる本体部２６と、本体部２６の上端を閉鎖する閉止板２７と、連結部材２１を外閉鎖部材２０に連結するための締結ナット２８と、ノズル１２と本体部２６との間をシールするシール部材２９と、本体部２６と閉止板２７との間をシールするシール部材３０とを有している。シール部材２９とシール部材３０とは、いずれもゴム等の弾性材料から円環状に形成され、互いに同一の部品を使用することができる。 The outer closing member 20 includes a main body portion 26 attached to the upper end portion of the nozzle 12, a closing plate 27 for closing the upper end of the main body portion 26, a fastening nut 28 for connecting the connecting member 21 to the outer closing member 20, A seal member 29 that seals between the nozzle 12 and the main body portion 26 and a seal member 30 that seals between the main body portion 26 and the closing plate 27 are provided. The seal member 29 and the seal member 30 are both formed in an annular shape from an elastic material such as rubber, and the same parts can be used.

本体部２６は、第１筒部３１と、中間板３２と、第２筒部３３とからなる。第１筒部３１は、ノズル１２と略同じ内径の筒形状に形成されている。また、第１筒部３１の下端部には径方向外方に突出するフランジ部（被連結部）３４が形成されている。そして、ノズル１２の上端に形成されたフランジ部１７と第１筒部３１のフランジ部３４とを対向させ、両者の間にシール部材２９を介装し、フランジ部１７とフランジ部３４とをボルト３６及びナット３７からなる締結具によって締結することで、第１筒部３１がノズル１２にシールされた状態で連結される。 The main body portion 26 includes a first tube portion 31, an intermediate plate 32, and a second tube portion 33. The first cylindrical portion 31 is formed in a cylindrical shape having substantially the same inner diameter as the nozzle 12. Further, a flange portion (connected portion) 34 that protrudes radially outward is formed at the lower end portion of the first cylindrical portion 31. And the flange part 17 formed in the upper end of the nozzle 12 and the flange part 34 of the 1st cylinder part 31 are made to oppose, the sealing member 29 is interposed between both, and the flange part 17 and the flange part 34 are volt | bolt. The first cylindrical portion 31 is connected to the nozzle 12 in a sealed state by being fastened by a fastener including the nut 36 and the nut 37.

また、第１筒部３１において、フランジ部３４よりも上側には、第１筒部３１に連通する流入管３９が略水平方向に設けられている。この流入管３９から第１筒部３１を介してノズル１２内に検査用流体を導入することができる。
なお、図２において、流入管３９とボルト３６及びナット３７とは、同一平面状に位置するように記載されているが、実際には、ボルト３６をフランジ部１７及びフランジ部３４に挿入することができるように周方向において位置がずらされている。 Further, in the first tube portion 31, an inflow pipe 39 communicating with the first tube portion 31 is provided in a substantially horizontal direction above the flange portion 34. The inspection fluid can be introduced into the nozzle 12 from the inflow pipe 39 through the first cylinder portion 31.
In FIG. 2, the inflow pipe 39, the bolt 36, and the nut 37 are described so as to be positioned on the same plane, but actually, the bolt 36 is inserted into the flange portion 17 and the flange portion 34. The position is shifted in the circumferential direction so that

中間板３２は、第１筒部３１の上端に溶接等によって固定されている。この中間板３２には、連結部材２１を挿通することができる挿通孔４１が形成されている。
第２筒部３３は、第１筒部３１よりもやや内径及び外径が大きな筒形状に形成されている。第２筒部３３の下端は、中間板３２の上面に溶接等によって固定されている。第２筒部３３の上端には、径方向外方へ突出するフランジ部４２が設けられている。 The intermediate plate 32 is fixed to the upper end of the first cylindrical portion 31 by welding or the like. The intermediate plate 32 is formed with an insertion hole 41 through which the connecting member 21 can be inserted.
The second cylindrical portion 33 is formed in a cylindrical shape having a slightly larger inner diameter and outer diameter than the first cylindrical portion 31. The lower end of the second cylindrical portion 33 is fixed to the upper surface of the intermediate plate 32 by welding or the like. A flange portion 42 that protrudes radially outward is provided at the upper end of the second cylindrical portion 33.

閉止板２７は、フランジ部４２と略同形状の円板状に形成されている。そして、閉止板２７をフランジ部４２に対向させ、両者間にシール部材３０を介装した状態で閉止板２７とフランジ部４２とをボルト４４及びナット４５からなる締結具によって締結することで、閉止板２７が本体部２６にシールされた状態で連結される。
締結ナット２８は、第２筒部３３内に配置されており、内部に雌ネジ部（第２連結部）を有している。そして、締結ナット２８は、中間板３２の挿通孔４１に挿通された連結部材２１の上端部に螺合し、外閉鎖部材２０と連結部材２１とを着脱可能に連結する。 The closing plate 27 is formed in a disk shape substantially the same shape as the flange portion 42. Then, the closing plate 27 is opposed to the flange portion 42, and the closing plate 27 and the flange portion 42 are fastened by a fastener including a bolt 44 and a nut 45 with the seal member 30 interposed therebetween, thereby closing the closing plate 27. The plate 27 is connected to the main body portion 26 in a sealed state.
The fastening nut 28 is disposed in the second cylindrical portion 33 and has a female screw portion (second connecting portion) therein. Then, the fastening nut 28 is screwed into the upper end portion of the connecting member 21 inserted through the insertion hole 41 of the intermediate plate 32, and removably connects the outer closing member 20 and the connecting member 21.

以上の構成を有する検査用治具１０を用いたノズル１２の耐圧漏洩検査について説明する。まず、一体化された内閉鎖部材１９及び連結部材２１をタンク本体１４の内部に持ち込み、連結部材２１をノズル１２の内部に挿入し、押さえ板２２とノズル１２の下端面とをシール部材２３を介して対向させる。 A pressure leakage inspection of the nozzle 12 using the inspection jig 10 having the above configuration will be described. First, the integrated inner closing member 19 and connecting member 21 are brought into the tank body 14, the connecting member 21 is inserted into the nozzle 12, and the holding plate 22 and the lower end surface of the nozzle 12 are connected to the sealing member 23. Through.

一方、タンク本体１４の外部側においては、外閉鎖部材２０における本体部２６と閉止板２７とを予め分解しておき、当該本体部２６をノズル１２のフランジ部１７上にシール部材２９を介して載せておく。そして、ノズル１２の内部に挿入された連結部材２１の上端部を中間板３２の挿通孔４１に挿通し、連結部材２１に締結ナット２８を仮止めする。また、ノズル１２のフランジ部１７と本体部２６のフランジ部３４とをボルト３６及びナット３７によって仮止めする。 On the other hand, on the outside of the tank main body 14, the main body portion 26 and the closing plate 27 in the outer closing member 20 are disassembled in advance, and the main body portion 26 is placed on the flange portion 17 of the nozzle 12 via the seal member 29. Put it on. Then, the upper end portion of the connecting member 21 inserted into the nozzle 12 is inserted into the insertion hole 41 of the intermediate plate 32, and the fastening nut 28 is temporarily fixed to the connecting member 21. Further, the flange portion 17 of the nozzle 12 and the flange portion 34 of the main body portion 26 are temporarily fixed by bolts 36 and nuts 37.

次に、本体部２６の上側から締結ナット２８を締め付けることによって、連結部材２１を本体部２６に相対して上方へ移動させ、押さえ板２２とノズル１２との間に介装されたシール部材２３を圧縮し、同時に、フランジ部１７とフランジ部３４との間に介装されたシール部材２９も圧縮する。さらに、ボルト３６とナット３７とを締め付けることによってもシール部材２９を圧縮する。これによって、内閉鎖部材１９とノズル１２との間、及び、ノズル１２と本体部２６との間がそれぞれシールされた状態となる。なお、締結ナット２８と連結部材２１との螺合のみによって本体部２６とノズル１２との間がシール部材２９によって十分にシールされる場合には、ボルト３６及びナット３７を省略することも可能である。 Next, by tightening the fastening nut 28 from the upper side of the main body 26, the connecting member 21 is moved upward relative to the main body 26, and the seal member 23 interposed between the pressing plate 22 and the nozzle 12. At the same time, the seal member 29 interposed between the flange portion 17 and the flange portion 34 is also compressed. Further, the sealing member 29 is also compressed by tightening the bolt 36 and the nut 37. Thereby, the space between the inner closing member 19 and the nozzle 12 and the space between the nozzle 12 and the main body portion 26 are sealed. Note that when the gap between the main body 26 and the nozzle 12 is sufficiently sealed by the seal member 29 only by screwing the fastening nut 28 and the connecting member 21, the bolt 36 and the nut 37 can be omitted. is there.

次に、本体部２６のフランジ部４２と閉止板２７との間にシール部材３０を介装した状態で両者をボルト４４及びナット４５によって締結する。これによって本体部２６と閉止板２７とがシールされた状態で連結される。
以上により、ノズル１２は、タンク本体１４の内部側からも外部側からも密閉された状態となる。そして、流入管（流入口）３９から検査用流体を所定の圧力で供給し、所定の時間圧力が保持されているかどうかを調べることによってノズル１２から漏洩の有無を検査することができる。 Next, both are fastened by bolts 44 and nuts 45 with the seal member 30 interposed between the flange portion 42 of the main body portion 26 and the closing plate 27. As a result, the main body 26 and the closing plate 27 are connected in a sealed state.
As described above, the nozzle 12 is sealed from both the inside and the outside of the tank body 14. Then, the presence or absence of leakage from the nozzle 12 can be inspected by supplying a test fluid from the inflow pipe (inlet) 39 at a predetermined pressure and checking whether the pressure is maintained for a predetermined time.

なお、流入管３９から流入される検査用流体は、特に限定されないが、例えば窒素を使用することができる。また、ノズル１２に付与する圧力は、例えば０．０１〜１０．００ＭＰａＧとすることができる。検査用流体として窒素を用いる場合、例えば１．１３ＭＰａＧの圧力で供給することができる。 The inspection fluid flowing from the inflow pipe 39 is not particularly limited, and for example, nitrogen can be used. Moreover, the pressure provided to the nozzle 12 can be 0.01-10.00 MPaG, for example. When nitrogen is used as the inspection fluid, it can be supplied at a pressure of 1.13 MPaG, for example.

以上、説明したように本実施の形態の検査用治具１０は、タンク１１のノズル１２に対する部分的な検査を可能にする。そのため、タンク全体に対して水張り検査を行う必要がなくなり、検査に要する工期や工費、労力を大幅に削減することができる。
また、検査用治具１０は、内閉鎖部材１９及び連結部材２１をタンク本体１４の内部側から装着する必要はあるものの、連結部材２１と外閉鎖部材２０との連結はタンク１１の外部側から行うことができる。したがって、ノズル１２に対する検査用治具１０の装着を容易に行うことができる。 As described above, the inspection jig 10 according to the present embodiment enables partial inspection of the nozzle 12 of the tank 11. Therefore, it is not necessary to perform water filling inspection on the entire tank, and the construction period, construction cost and labor required for the inspection can be greatly reduced.
Further, although the inspection jig 10 needs to mount the inner closing member 19 and the connecting member 21 from the inside of the tank body 14, the connection between the connecting member 21 and the outer closing member 20 is from the outside of the tank 11. It can be carried out. Therefore, the inspection jig 10 can be easily attached to the nozzle 12.

さらに、検査用治具１０を装着するためにノズル１２には何ら加工を行う必要がないので、本実施の形態の検査用治具１０は、既設のタンク１１の検査のためにも使用することができる。 Furthermore, since it is not necessary to perform any processing on the nozzle 12 in order to mount the inspection jig 10, the inspection jig 10 according to the present embodiment is also used for inspecting the existing tank 11. Can do.

図４は、本発明の第２の実施の形態に係る検査用治具１０の断面図である。
本実施の形態の検査用治具１０は、内閉鎖部材１９の構造が第１の実施の形態とは異なっている。すなわち、本実施の形態の内閉鎖部材１９は、第１の実施の形態の押さえ板２２（図２参照）の代わりに、一側部が開口する椀形状に形成された被覆部材４８を備えている。具体的に、この被覆部材４８は、底壁４６と、この底壁４６の外周から立ち上がる周壁４７とを有している。そして、被覆部材４８は、タンク本体１４の内部に突出するノズル１２の端部をその周囲を含んで被覆するように配置される。また、本実施の形態のシール部材２３は、被覆部材４８の周壁４７の端面と、タンク本体１４の内面との間に介装される。なお、被覆部材４８の周壁４７の端面は、タンク本体１４の内面形状に沿った形状に形成される。したがって、例えば、タンク本体１４の内面が湾曲している場合には、周壁４７の端面もその形状に沿った湾曲形状に形成される。 FIG. 4 is a cross-sectional view of the inspection jig 10 according to the second embodiment of the present invention.
The inspection jig 10 of this embodiment is different from the first embodiment in the structure of the inner closing member 19. That is, the inner closing member 19 of the present embodiment includes a covering member 48 formed in a bowl shape with one side opening instead of the pressing plate 22 (see FIG. 2) of the first embodiment. Yes. Specifically, the covering member 48 includes a bottom wall 46 and a peripheral wall 47 that rises from the outer periphery of the bottom wall 46. The covering member 48 is disposed so as to cover the end portion of the nozzle 12 protruding into the tank body 14 including its periphery. Further, the seal member 23 of the present embodiment is interposed between the end surface of the peripheral wall 47 of the covering member 48 and the inner surface of the tank body 14. Note that the end surface of the peripheral wall 47 of the covering member 48 is formed in a shape along the inner surface shape of the tank body 14. Therefore, for example, when the inner surface of the tank body 14 is curved, the end surface of the peripheral wall 47 is also formed in a curved shape along the shape.

本実施の形態の場合、タンク本体１４の内部側におけるノズル１２の端部だけでなく、その周囲を含めて被覆部材４８及びシール部材２３によって密封することができる。そのため、ノズル１２とタンク本体１４との接合部（溶接部１６）からの流体の漏洩の有無をも検査することができる。 In the case of the present embodiment, not only the end portion of the nozzle 12 on the inner side of the tank body 14 but also the periphery thereof can be sealed by the covering member 48 and the sealing member 23. Therefore, the presence or absence of fluid leakage from the joint portion (welded portion 16) between the nozzle 12 and the tank main body 14 can also be inspected.

図５は、本発明の第３の実施の形態に係る検査用治具１０の断面図である。
上述の第１、第２の実施の形態の検査用治具１０は、内閉鎖部材１９及び連結部材２１をタンク本体１４の内部から装着する必要があった。しかしながら、第３の実施の形態の検査用治具１０は、内閉鎖部材１９及び連結部材２１をタンク本体１４の外部側から装着することが可能なように構成されている。 FIG. 5 is a cross-sectional view of an inspection jig 10 according to the third embodiment of the present invention.
In the inspection jig 10 according to the first and second embodiments described above, it is necessary to mount the inner closing member 19 and the connecting member 21 from the inside of the tank main body 14. However, the inspection jig 10 of the third embodiment is configured such that the inner closing member 19 and the connecting member 21 can be mounted from the outside of the tank body 14.

具体的に、本実施の形態の内閉鎖部材１９は、ノズル１２の内周面に嵌合されるシール部材２３と、このシール部材２３を上下から挟持する上挟持板５２及び下挟持板５３と、上挟持板５２に連結された支持筒（支持部材）５４と、を備えている。シール部材２３は、ゴム等の弾性材料から略円筒形状に形成されており、管状部材１２の内径と略同じか若干小さい外径を有している。下挟持板５３は、連結部材２１の下端部に溶接等によって固定されている。また、支持筒５４は、連結部材２１の外周面に嵌合されている。支持筒５４の上端は、締結ナット２８の下側に装着された座金（規制部材）５５によって上方への移動が規制されている。上挟持板５２とシール部材２３の中央部には連結部材２１が貫通している。 Specifically, the inner closing member 19 of the present embodiment includes a sealing member 23 fitted to the inner peripheral surface of the nozzle 12, an upper clamping plate 52 and a lower clamping plate 53 that clamp the sealing member 23 from above and below. And a support cylinder (support member) 54 connected to the upper clamping plate 52. The seal member 23 is formed in an approximately cylindrical shape from an elastic material such as rubber, and has an outer diameter that is substantially the same as or slightly smaller than the inner diameter of the tubular member 12. The lower clamping plate 53 is fixed to the lower end portion of the connecting member 21 by welding or the like. The support cylinder 54 is fitted on the outer peripheral surface of the connecting member 21. The upward movement of the upper end of the support cylinder 54 is restricted by a washer (regulator member) 55 attached to the lower side of the fastening nut 28. The connecting member 21 passes through the central portion of the upper clamping plate 52 and the seal member 23.

本実施の形態では、外閉鎖部材２０の中間板３２の挿通孔４１に予め連結部材２１を挿通し、連結部材２１に締結ナット２８を仮止めしておき、タンク本体１４の外部側からノズル１２内に内閉鎖部材１９と連結部材２１とを挿入する。そして、本体部２６をノズル１２に連結したのち、締結ナット２８を締め付けることによって上下の挟持板５２，５３の間隔を狭める。これにより、シール部材２３が上挟持板５２と下挟持板５３とによって上下方向（管軸方向）に圧縮され、水平方向に膨張してノズル１２の内周面に圧接される。これにより、内閉鎖部材１９によってタンク本体１４の内部側におけるノズル１２の端部を密封状態に閉鎖することができる。 In the present embodiment, the connecting member 21 is inserted in advance into the insertion hole 41 of the intermediate plate 32 of the outer closing member 20, the fastening nut 28 is temporarily fixed to the connecting member 21, and the nozzle 12 is provided from the outside of the tank body 14. The inner closing member 19 and the connecting member 21 are inserted therein. And after connecting the main-body part 26 to the nozzle 12, the space | interval of the upper and lower clamping plates 52 and 53 is narrowed by tightening the fastening nut 28. FIG. As a result, the seal member 23 is compressed in the vertical direction (tube axis direction) by the upper clamping plate 52 and the lower clamping plate 53, expands in the horizontal direction, and is pressed against the inner peripheral surface of the nozzle 12. Thereby, the end of the nozzle 12 on the inner side of the tank body 14 can be closed in a sealed state by the inner closing member 19.

本実施の形態は、作業者がタンク本体１４の内部に入ることなく検査用治具１０をノズル１２に装着することができる。したがって、検査用治具１０の装着がより容易となり、検査に要する時間や労力をより少なくすることができる。 In the present embodiment, the inspection jig 10 can be mounted on the nozzle 12 without an operator entering the tank body 14. Therefore, the inspection jig 10 can be easily mounted, and the time and labor required for inspection can be reduced.

図６は、本発明の第４の実施の形態に係る検査用治具１０の断面図である。
本実施の形態は、上述の第３の実施の形態と同様に、検査用治具１０をタンク本体１４の外部側から装着することができるように構成したものである。
本実施の形態の内閉鎖部材１９は、第３の実施の形態と同様に、ノズル１２の内周面に嵌合されるシール部材２３を備えている。このシール部材２３は、連結部材２１の下端部に回転可能に連結されている。ノズル１２の下端部には、シール部材２３の下面外周部を下側から受ける突縁部５６が形成されている。 FIG. 6 is a sectional view of an inspection jig 10 according to the fourth embodiment of the present invention.
This embodiment is configured such that the inspection jig 10 can be mounted from the outside of the tank main body 14 as in the third embodiment.
As in the third embodiment, the inner closing member 19 of the present embodiment includes a seal member 23 that is fitted to the inner peripheral surface of the nozzle 12. The seal member 23 is rotatably connected to the lower end portion of the connecting member 21. At the lower end portion of the nozzle 12, a protruding edge portion 56 that receives the outer peripheral portion of the lower surface of the seal member 23 from the lower side is formed.

また、外閉鎖部材２０における締結ナット２８は、中間板３２の上面に溶接等によって固定されている。また、連結部材２１の上端部には、当該連結部材２１を回すための工具５８が嵌合する被嵌合部５９が形成されている。 The fastening nut 28 in the outer closing member 20 is fixed to the upper surface of the intermediate plate 32 by welding or the like. Further, a fitting portion 59 into which a tool 58 for turning the connecting member 21 is fitted is formed at the upper end portion of the connecting member 21.

本実施の形態では、予め外閉鎖部材２０の中間板３２の挿通孔４１に連結部材２１の上端部を挿通し、締結ナット２８に仮止めしておく。そして、内閉鎖部材１９及び連結部材２１をタンク１１の外部側からノズル１２内に挿入する。その後、工具５８を用いて連結部材２１を回すことで、当該連結部材２１を下方へ移動させ、シール部材２３をノズル１２の突縁部５６に圧接させる。 In the present embodiment, the upper end portion of the connecting member 21 is inserted into the insertion hole 41 of the intermediate plate 32 of the outer closing member 20 in advance and temporarily fixed to the fastening nut 28. Then, the inner closing member 19 and the connecting member 21 are inserted into the nozzle 12 from the outside of the tank 11. Thereafter, the connecting member 21 is rotated using the tool 58 to move the connecting member 21 downward, and the seal member 23 is brought into pressure contact with the protruding edge portion 56 of the nozzle 12.

したがって、本実施の形態においても、作業者がタンク１１の内部に入ることなく検査用治具１０をノズル１２に装着することができる。したがって、検査用治具１０の装着がより容易となり、検査に要する時間や労力を少なくすることができる。
ただし、本実施の形態では、ノズル１２に突縁部５６を予め形成しておかなければならず、その分、タンク１１の製造コストが増大する。したがって、この点においては、上記第３の実施の形態の方がより有利である。 Therefore, also in the present embodiment, the inspection jig 10 can be attached to the nozzle 12 without the operator entering the tank 11. Therefore, the inspection jig 10 can be easily mounted, and the time and labor required for inspection can be reduced.
However, in the present embodiment, the protruding portion 56 must be formed in advance on the nozzle 12, and the manufacturing cost of the tank 11 increases accordingly. Therefore, in this respect, the third embodiment is more advantageous.

本発明は、上記実施の形態に限定されるものではなく、特許請求の範囲に記載された発明の範囲内において適宜変更可能である。
例えば、本発明は、図１に示されるような円筒型のタンクに限らず、球形等の他の形状のタンクのノズル（管状部材）に対しても使用することができる。
また、外閉鎖部材２０と連結部材２１との連結は、雄ネジ部と雌ネジ部（締結ナット２８）によって行われているが、当該連結によって連結部材２１を上下方向に移動させることができれば、他の構成（例えばレバー操作によって連結部材を引き上げつつ外閉鎖部材２０に固定する構成等）を採用することもできる。
また、ノズル１２のフランジ部１７と外閉鎖部材２０のフランジ部３４との連結、本体部２６のフランジ部４２と閉止板２７との連結は、ボルト３６，４４やナット３７，４５からなる締結具に代えて、クランプ具を使用してもよい。 The present invention is not limited to the above-described embodiment, and can be appropriately changed within the scope of the invention described in the claims.
For example, the present invention is not limited to the cylindrical tank as shown in FIG. 1, but can be used for a nozzle (tubular member) of a tank having another shape such as a spherical shape.
Further, the connection between the outer closing member 20 and the connecting member 21 is performed by the male screw portion and the female screw portion (fastening nut 28). If the connecting member 21 can be moved in the vertical direction by the connection, Other configurations (for example, a configuration in which the connecting member is fixed to the outer closing member 20 while being pulled up by a lever operation) may be employed.
Further, the connection between the flange portion 17 of the nozzle 12 and the flange portion 34 of the outer closing member 20 and the connection between the flange portion 42 of the main body portion 26 and the closing plate 27 are fasteners including bolts 36 and 44 and nuts 37 and 45. Instead of this, a clamp tool may be used.

１０：検査用治具
１１：タンク
１２：ノズル
１９：内閉鎖部材
２０：外閉鎖部材
２１：連結部材
２３：シール部材
２４：雄ネジ部（第１ネジ部）
２８：締結ナット（第２ネジ部）
３４：フランジ部（被連結部）
３９：流入管（流入口）
４８：被覆部材 10: Inspection jig 11: Tank 12: Nozzle 19: Inner closing member 20: Outer closing member 21: Connecting member 23: Seal member 24: Male screw part (first screw part)
28: Fastening nut (second screw part)
34: Flange (connected part)
39: Inflow pipe (inlet)
48: Covering member

Claims

An inner closing member for sealing a tubular member communicating with the inside and outside of the tank body on the inside of the tank body;
An outer closing member that has an inflow port for allowing inspection fluid to flow into the tubular member, and that seals the tubular member on the outside of the tank body;
A connecting member that is inserted into the tubular member, the inner closing member is connected to one end portion in the longitudinal direction, and the outer closing member is detachably connected to the other end portion in the longitudinal direction. An inspection jig for tubular members characterized by the above.

The connecting member has a first connecting portion;
The outer closing member is connected to the first connecting portion, and has a second connecting portion that moves the connecting member in the tube axis direction of the tubular member along with the connection,
2. The tubular member according to claim 1, wherein the inner closing member includes a seal member that is pressed against a hermetically sealed portion by movement of the connecting member accompanying connection of the first connecting portion and the second connecting portion. Inspection jig.

The tubular member inspection jig according to claim 2, wherein the first connecting portion and the second connecting portion are configured by screws that can be screwed together.

The inner closing member has a pressing member facing the end surface of the tubular member on the inner side of the tank body, and the seal member interposed between the pressing member and the end surface. The inspection jig for tubular members according to claim 2 or 3.

The inner closing member is formed in a bowl shape with one side opened, and covers the end of the tubular member including its periphery on the inner side of the tank body, and the opening end surface of the covering member The tubular member inspection jig according to claim 2, wherein the sealing member is interposed between the tank body and an inner surface of the tank body.

The inner closing member is fitted in the inner peripheral surface of the tubular member, and is compressed in the tube axis direction by the movement of the connecting member accompanying the connection between the first connecting portion and the second connecting portion, and the tubular member The jig for inspection of a tubular member according to claim 2 or 3, wherein the sealing member is pressed against the inner peripheral surface of the member.

A flange portion for attaching a component is provided at an end portion of the tubular member on the outside of the tank body, and the outer closing member has a connected portion connected to the flange portion. Item 7. A tubular member inspection jig according to any one of Items 1 to 6.