JP2014077719A - In-tube pressure resistance testing machine and testing method - Google Patents

In-tube pressure resistance testing machine and testing method Download PDF

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JP2014077719A
JP2014077719A JP2012225915A JP2012225915A JP2014077719A JP 2014077719 A JP2014077719 A JP 2014077719A JP 2012225915 A JP2012225915 A JP 2012225915A JP 2012225915 A JP2012225915 A JP 2012225915A JP 2014077719 A JP2014077719 A JP 2014077719A
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pressure
tube
pressurizing
pipe
test
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Yasuhiro Yokoshima
横島康弘
Akimitsu Kudo
工藤章光
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Yokoshima and Co
Okasan Livic Co Ltd
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Yokoshima and Co
Okasan Livic Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an in-tube pressure resistance testing machine and a testing method that can simplify a test of the pressure resistance of a tube made of a resin composite material.SOLUTION: An in-tube pressure resistance testing machine for testing the pressure resistance of a tube body includes: pressurizing means for pressurizing the inside of the tube body to be tested with an outer peripheral part by raising the internal pressure; and pressure raising means for raising the pressure in the pressurizing means. The pressurizing means comprises a tube body made of rubber or resin, a pressure bag 13, or a hose. The pressure raising means comprises tubular pressurizing means, a restriction guide tube which restricts expansion of the pressurizing means, and pressurizing plugs 10 inserted into both ends of the tubular pressurizing means. The pressurizing plugs 10 seal the pressurizing means and a pressure raising fluid is injected into the pressurizing means through the pressurizing plugs. The pressure raising means comprises a pressurizing body comprising a tubular main body and a pressurizing plug 10 provided at an outer peripheral part of the tubular main body, and the restriction guide tube which restricts the expansion of the pressurizing body, and the pressure raising fluid is injected into the pressurizing plug 10 through the tubular main body.

Description

本発明は、管内耐圧試験機及び試験方法に係り、より詳しくは、上下水道、農業用水、及び工業用水路用の複合構造プラスチック管の簡単でかつ作業現地で実施可能な管内耐圧試験機及び試験方法に関する。   The present invention relates to an in-pipe pressure tester and a test method, and more particularly, to an in-pipe pressure tester and a test method that can be carried out simply and locally at a work site for composite structure plastic pipes for water and sewerage, agricultural water, and industrial waterways. About.

1980年代半ば以降、老朽化した管内に樹脂含浸プラスチック管を反転挿入し、樹脂含浸プラスチック管内に内圧をかけて樹脂含浸プラスチック管を老朽管壁面に貼り付けて硬化させる老朽管更生方法が実施されてきた。
樹脂含浸プラスチック管は、管状に加工したポリエステル不織布からなる樹脂吸着材にポリエステル樹脂を含浸させたものであり、樹脂含浸プラスチック管全体が同一のポリエステル素材で作られていた。そして、耐圧性は、樹脂含浸プラスチック管からサンプルを切り出して引張強度で評価していた。
近年、耐圧性を向上させるため樹脂含浸プラスチック管にグラスファイバーや織布を複合させたものが現れて、更生管以外のプラスチック管にも採用されてきた。
Since the mid-1980s, aged pipe rehabilitation method has been implemented in which a resin-impregnated plastic pipe is inverted and inserted into an aged pipe, internal pressure is applied to the resin-impregnated plastic pipe, and the resin-impregnated plastic pipe is attached to the wall of the aged pipe and cured. It was.
The resin-impregnated plastic tube is obtained by impregnating a polyester adsorbent with a resin adsorbent made of a polyester nonwoven fabric processed into a tubular shape, and the entire resin-impregnated plastic tube is made of the same polyester material. The pressure resistance was evaluated by tensile strength after cutting a sample from a resin-impregnated plastic tube.
In recent years, in order to improve pressure resistance, a resin-impregnated plastic tube combined with glass fiber or woven cloth has appeared and has been adopted in plastic tubes other than rehabilitated tubes.

樹脂含浸プラスチック管にグラスファイバーや織布を複合させることにより耐圧性は向上したものの、複合材であるため素材の均一性が低下することになり、耐圧性評価のための試片採取のやり方により特性に大きな差異が生じることになった。このため、試片採取による簡単な耐圧評価が不可能となり、管内に圧力をかけて破断させるバーストテストが行われるようになった。
さらに、樹脂含浸プラスチック管を用いた管更生では現地で老朽化した管内に更生管を形成するため、現地で採取した試片での耐圧試験とともに現地での耐圧試験が要求された。
Although the pressure resistance is improved by combining glass fiber and woven fabric with a resin-impregnated plastic tube, the uniformity of the material is reduced because it is a composite material, and depending on the method of collecting specimens for pressure resistance evaluation A large difference in characteristics was to occur. For this reason, a simple pressure resistance evaluation by sampling is impossible, and a burst test in which pressure is applied to the inside of the tube to break it has come to be performed.
In addition, pipe rehabilitation using resin-impregnated plastic pipes requires a local pressure test as well as a pressure test using specimens collected locally, in order to form a rehabilitated pipe in a locally aged pipe.

従来、管の耐圧試験は直径の2倍以上の長さの管の両端をシールし、管の内部に水圧をかけて実施していた。しかし、管の両端のシールは、管端にフランジが形成されている場合は比較的簡単であったが、管端にフランジ等の接続部がない場合は困難であった。
特に、管更生管を施工現場より切り出して試験する場合は、試片の長さが長くとれず短かくなりフランジもないため耐圧試験の実施が困難であった。
従って、複合構造プラスチック管の耐圧試験を簡略化することは緊急の課題となっていた。
Conventionally, the pressure resistance test of a pipe has been carried out by sealing both ends of a pipe having a length more than twice the diameter and applying water pressure to the inside of the pipe. However, sealing at both ends of the tube is relatively simple when a flange is formed at the tube end, but difficult when there is no connection portion such as a flange at the tube end.
In particular, when a pipe rehabilitated pipe is cut out from the construction site and tested, the length of the specimen cannot be made long and short, and there is no flange, so that it was difficult to perform a pressure test.
Therefore, it has been an urgent task to simplify the pressure test of composite plastic tubes.

特開2004−232329号公報JP 2004-232329 A

本発明は、上記問題を解決するためになされたものであって、その目的とするところは、複合構造プラスチック管の耐圧試験が簡略化できる管内耐圧試験機及び試験方法を提供することである。   The present invention has been made to solve the above problems, and an object of the present invention is to provide an in-pipe pressure tester and a test method capable of simplifying the pressure test of a composite structure plastic tube.

本発明は、管体の耐圧力試験用の管内耐圧試験機であって、内部の圧力を上げて外周部で試験対象管体内を加圧する加圧手段と、前記加圧手段の内部の圧力を上げる増圧手段と、を含むことを特徴とする。   The present invention is an in-pipe pressure tester for a pressure test of a pipe body, the pressurizing means for increasing the internal pressure and pressurizing the test target pipe body at the outer periphery, and the internal pressure of the pressurizing means. And a pressure increasing means for increasing.

前記加圧手段は、ゴムまたは樹脂製の管体、圧力バッグまたはホースからなることを特徴とする。   The pressurizing means includes a tube made of rubber or resin, a pressure bag, or a hose.

前記増圧手段は、管状の加圧手段、前記加圧手段の拡大を拘束する拘束ガイド管及び前記管状の加圧手段の両端に挿入する加圧プラグからなり、前記加圧プラグで加圧手段をシールするとともに前記加圧プラグを通して増圧用流体を前記加圧手段内に注入することを特徴とする。   The pressure-increasing means includes a tubular pressure means, a restraining guide tube for restraining the expansion of the pressure means, and pressure plugs inserted into both ends of the tubular pressure means, and the pressure plug is used as the pressure means. And a pressurizing fluid is injected into the pressurizing means through the pressurizing plug.

前記増圧手段は、管状の本体と前記管状の本体の外周部に設けられた加圧プラグから成る加圧体、及び前記加圧体の拡大を拘束する拘束ガイド管からなり、前記管状の本体を通して増圧用流体を加圧プラグに注入することを特徴とする。   The pressure-increasing means includes a tubular body, a pressure body including a pressure plug provided on an outer peripheral portion of the tubular body, and a restraining guide tube that restrains expansion of the pressure body, and the tubular body The pressurizing fluid is injected into the pressure plug through the pressure plug.

前記増圧手段は、圧力バッグと、圧力バッグの拡張を拘束すると共に前記試験対象管の両端部を拘束する端部拘束板とからなり、両端の前記端部拘束板はボルト、ナットにより固定されることを特徴とする。   The pressure-intensifying means includes a pressure bag and end restraint plates that restrain the expansion of the pressure bag and restrain both ends of the test object tube, and the end restraint plates at both ends are fixed by bolts and nuts. It is characterized by that.

前記増圧手段は、内圧がかけられるホースと、前記試験対象管の内部に挿入される仕切管と、前記ホースの拡張を拘束するとともに前記試験対象管及び前記仕切り管の両端部を拘束する端部拘束板と、からなり、両端の前記端部拘束板はボルト、ナットにより固定されることを特徴とする。   The pressure increasing means includes a hose to which an internal pressure is applied, a partition tube inserted into the test target tube, and an end for constraining expansion of the hose and for constraining both ends of the test target tube and the partition tube. The end portion restraining plates at both ends are fixed by bolts and nuts.

また、本発明は、試験対象管の内部に加圧手段を挿入する段階と、加圧手段の内部に増圧手段によって流体圧を加えて前記加圧手段内部を増圧し、前記加圧手段の外周部によって前記試験対象管の内部を加圧する段階と、を含むことを特徴とする。   The present invention also includes a step of inserting a pressurizing means inside the test object tube, and applying a fluid pressure to the inside of the pressurizing means by a pressure increasing means to increase the pressure inside the pressurizing means, And pressurizing the inside of the test object tube with an outer peripheral portion.

前記内部を加圧する段階は、前記試験対象管の長手方向両側に拘束ガイド管を装着する段階と、前記管体の両端に加圧プラグを装着して前記管体をシールする段階と、前記加圧プラグに設けられた流体注入孔から流体を圧入する段階と、からなることを特徴とする。   The step of pressurizing the inside includes the steps of mounting a constraining guide tube on both sides in the longitudinal direction of the test object tube, mounting the pressure plugs on both ends of the tube, and sealing the tube. Pressurizing fluid from a fluid injection hole provided in the pressure plug.

前記内部を加圧する段階は、前記試験対象管の内部に加圧手段の圧力バッグを挿入した状態で前記試験対象管の両端部に端部拘束板を装着し、前記両端部の端部拘束板をボルトとナットで締結する段階と、前記端部拘束板を通して前記加圧手段の圧力バッグに流体を圧入する段階と、からなることを特徴とする。   The step of pressurizing the inside includes attaching an end restraining plate to both ends of the test target tube in a state where a pressure bag of a pressurizing means is inserted inside the test target tube, And a step of fastening fluid with a bolt and a nut, and a step of press-fitting a fluid into the pressure bag of the pressurizing means through the end portion restraining plate.

前記内部を加圧する段階は、仕切管の外周に加圧手段のホースを巻き付ける段階と、前記ホースを巻き付けた前記仕切管を前記試験対象管の内部に装着する段階と、前記試験対象管の内部に加圧手段の前記ホースを巻き付けた状態で前記試験対象管の両端部に端部拘束板を装着し、前記両端部の端部拘束板をボルトとナットで締結する段階と、前記端部拘束板及び前記端部拘束板を通して前記加圧手段のホースに流体を圧入する段階と、からなることを特徴とする。   The step of pressurizing the inside includes the step of winding a hose of pressurizing means around the outer periphery of the partition tube, the step of mounting the partition tube wrapped with the hose inside the test target tube, and the inside of the test target tube Attaching end restraint plates to both ends of the test object tube with the hose of the pressurizing means wrapped around the end, and fastening the end restraint plates at both ends with bolts and nuts; and the end restraint Pressurizing fluid into the hose of the pressurizing means through the plate and the end restraining plate.

本発明によれば、試験対象管内に加圧手段を配備し、加圧手段内に圧力をかけることで試験対象管を間接的に加圧できるため試験対象管端部のシールが不要となる。
特に更生管では端部のシールが不要となるため短い試験対象管での試験が可能となり、 試験対象管の採取が容易となる。
また、採取した試験対象管について、現地で簡単に試験ができるため、大幅なコスト削減が可能となる。
According to the present invention, it is possible to indirectly pressurize the test target pipe by disposing the pressurizing means in the test target pipe and applying pressure in the pressurizing means, so that it is not necessary to seal the end of the test target pipe.
In particular, rehabilitation pipes do not require end seals, so it is possible to perform tests on short test pipes and to collect test pipes easily.
In addition, since the collected test tubes can be easily tested locally, the cost can be greatly reduced.

本発明の加圧プラグ式小口径管内耐圧試験の実施状況を示す図である。It is a figure which shows the implementation condition of the pressurization plug type small diameter pipe pressure resistance test of this invention. 本発明の加圧プラグ式大口径管内耐圧試験の実施状況を示す図である。It is a figure which shows the implementation condition of the pressurization plug type large diameter pipe pressure resistance test of this invention. 本発明の圧力バッグ式管内耐圧試験の実施状況を示す図である。It is a figure which shows the implementation condition of the pressure-bag type pipe pressure resistance test of this invention. 本発明のホース式管内耐圧試験の実施状況を示す図である。It is a figure which shows the implementation condition of the hose | pipe pressure resistance test of this invention. 本発明の試験対象管の断面図である。It is sectional drawing of the test object pipe | tube of this invention. 本発明の試験対象管の断面図である。It is sectional drawing of the test object pipe | tube of this invention.

2種以上の素材からなる複合構造プラスチック管には強化プラスチック管、管更生管がある。
図5,6は試験対象管となる複合構造プラスチック管の断面を示す図である。
図5の複合構造プラスチック管は、内周部から内プラスチックフィルム、樹脂吸着材、耐圧インターライナーの順に構成されている。
図6の複合構造プラスチック管は、内周部から内プラスチックフィルム、樹脂吸着材、グラスファイバー複合樹脂吸着材、樹脂吸着材複合耐圧インターライナー、樹脂吸着材、外プラスチックフィルムの順に構成されている。
プラスチックフィルムには、主として0.3〜2.0mm厚のポリエチレンフィルムが使用される。
耐圧インターライナーは、ポリエステル、ナイロン、ポリプロピレン、ビニロン等の織布を管状に加工した管状の織布である。
耐圧インターライナーを管状に加工する方法としては、糸を管状に編む方法、またはシート状織布の両端を縫合、接着、または溶着する方法がある。
Composite plastic pipes made of two or more materials include reinforced plastic pipes and pipe rehabilitation pipes.
5 and 6 are cross-sectional views of a composite structure plastic tube that is a test object tube.
The composite structure plastic pipe shown in FIG. 5 is constructed from the inner periphery to the inner plastic film, the resin adsorbent, and the pressure-resistant interliner.
The composite plastic tube shown in FIG. 6 is configured from the inner periphery to the inner plastic film, the resin adsorbent, the glass fiber composite resin adsorbent, the resin adsorbent composite pressure-resistant interliner, the resin adsorbent, and the outer plastic film.
As the plastic film, a polyethylene film having a thickness of 0.3 to 2.0 mm is mainly used.
The pressure-resistant interliner is a tubular woven fabric obtained by processing a woven fabric such as polyester, nylon, polypropylene, and vinylon into a tubular shape.
As a method of processing the pressure-resistant interliner into a tubular shape, there are a method of knitting a yarn into a tubular shape, or a method of sewing, bonding, or welding both ends of a sheet-like woven fabric.

樹脂吸着材は、織布と不織布をニードルで結合させた素材を管状に加工したものであり、主としてポリエステル、ビニロン、アクリル等の不織布またはグラスファイバーを素材としている。
樹脂吸着材には液状の不飽和ポリエステル樹脂、エポキシ樹脂、ビニールエステル樹脂等の熱硬化性樹脂が含浸される。
樹脂が含浸されたライニング材は老朽管内に挿入された後、加圧されて老朽管壁に圧着され熱硬化性樹脂を硬化させることにより老朽管内に管更生管を形成する。
管更生管は、現場で硬化させて製作される管であるため試験対象管は、施工管路内から採取され耐圧試験に供される。
耐圧試験としては、許容圧力内での耐圧性の確認、バースト圧力の測定、または、耐圧クリープ試験等が行われる。
The resin adsorbent is obtained by processing a material obtained by binding a woven fabric and a nonwoven fabric with a needle into a tubular shape, and is mainly made of a nonwoven fabric such as polyester, vinylon, acrylic, or glass fiber.
The resin adsorbent is impregnated with a thermosetting resin such as a liquid unsaturated polyester resin, epoxy resin, or vinyl ester resin.
The lining material impregnated with the resin is inserted into the aging pipe, and then pressurized and pressed against the wall of the aging pipe to cure the thermosetting resin, thereby forming a pipe rehabilitation pipe within the aging pipe.
Since the pipe rehabilitation pipe is a pipe that is hardened in the field, the test target pipe is taken from the construction pipeline and subjected to a pressure test.
As the pressure resistance test, confirmation of pressure resistance within an allowable pressure, measurement of burst pressure, pressure resistance creep test, or the like is performed.

本発明による耐圧試験では、上記のような複合構造プラスチック管を長さ2m以下に切断し、複合構造プラスチック管の内部にゴムまたは樹脂製の管状の加圧手段、圧力バッグまたはホースからなる加圧手段を配備する。、
加圧手段には、管状、圧力バッグ、またはホース等を使用するため加圧により伸びるが、織布、または不織布で補強してもよい。
加圧には、0.2MPa以下の低圧の場合は空気圧を用い、0.2MPa以上の高圧の場合は水圧を使用する。使用する水の温度は通常23℃近傍に調整される。試験対象管の両端部には試験対象管の拡張を拘束するために金属板やネット製の拘束体を配備する。
In the pressure resistance test according to the present invention, the above-mentioned composite structure plastic pipe is cut to a length of 2 m or less, and the composite structure plastic pipe is pressurized by a rubber or resin tubular pressurizing means, a pressure bag or a hose. Deploy means. ,
As the pressurizing means, a tube, a pressure bag, a hose or the like is used, so that it is stretched by pressurization, but may be reinforced with a woven fabric or a non-woven fabric.
For pressurization, air pressure is used for a low pressure of 0.2 MPa or less, and water pressure is used for a high pressure of 0.2 MPa or more. The temperature of the water used is usually adjusted to around 23 ° C. In order to constrain the expansion of the test object pipe, a metal plate or a net-made restraint body is provided at both ends of the test object pipe.

以下、添付図面に基づき、本発明について詳細に説明する。
図1は、本発明の小口径管用加圧プラグ式管内耐圧試験の実施状況を示す図、図2は、本発明の大口径管用加圧プラグ式管内耐圧試験の実施状況を示す図、図3は、本発明の圧力バッグ式管内耐圧試験の実施状況を示す図、図4は、本発明のホース式管内耐圧試験の実施状況を示す図である。
また、図5、6は、本発明の試験対象管である複合構造プラスチック管の断面図である。
本発明は、管体の耐圧力試験用の管内耐圧試験機に係る発明であり、管体の内周部にゴムまたは樹脂製の加圧手段を装着し、この加圧手段の内部を流体等で増圧して間接的に管体に圧力をかける管内耐圧試験機及びその試験方法である。
加圧手段としては管状の加圧手段、バッグまたはホースが採用可能であり、加圧手段内部の圧力を増圧して外周部で試験対象管体内周部を加圧する。
管状の加圧手段、圧力バッグまたはホース等の加圧手段はゴムまたは樹脂製のものが使用される。
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a diagram showing an implementation status of a pressure plug type in-tube pressure test for a small-diameter pipe of the present invention, FIG. 2 is a diagram showing an implementation status of a pressure-plug type in-tube pressure test for a large-diameter tube of the present invention, FIG. These are figures which show the implementation status of the pressure bag type in-pipe pressure test of this invention, and FIG. 4 is a figure which shows the implementation status of the hose type in-pipe pressure test of this invention.
5 and 6 are cross-sectional views of a composite structure plastic pipe which is a test object pipe of the present invention.
The present invention relates to an in-tube pressure tester for a pressure resistance test of a pipe body, and a pressure means made of rubber or resin is attached to the inner periphery of the pipe body, and the inside of the pressure means is fluid or the like. This is an in-pipe pressure tester and its test method in which the pressure is increased and the pressure is indirectly applied to the pipe body.
As the pressurizing means, a tubular pressurizing means, a bag or a hose can be adopted, and the pressure inside the pressurizing means is increased to pressurize the inner periphery of the test object tube in the outer peripheral portion.
The pressurizing means such as a tubular pressurizing means, a pressure bag or a hose is made of rubber or resin.

増圧方法としては、試験対象管体のサイズその他の条件により、加圧プラグ式、圧力バッグ式及びホース式がある。
図1は、小口径管用の加圧プラグ式の実施状況を示す図である。
この方法は、管状の加圧手段2、加圧手段2の拡大を拘束する拘束ガイド管3及び管状の加圧手段2の両端に挿入する加圧プラグ4を用意し、加圧プラグ4で管状の加圧手段2をシールするとともに加圧プラグ4を通して増圧用流体を前記管状の加圧手段2内に注入する。
1端に装着された加圧プラグ4には増圧用流体を注入する注入孔が設けられ、増圧用流体は、貯水タンク5からポンプ6によりバルブ7を経由して供給される。
他端に装着された加圧プラグ4には圧力計8が取り付けられており、管状の加圧手段2の圧力を検出するようにしている。
As the pressure increasing method, there are a pressure plug type, a pressure bag type, and a hose type depending on the size of the tube to be tested and other conditions.
FIG. 1 is a diagram showing an implementation state of a pressure plug type for a small-diameter pipe.
In this method, a tubular pressurizing means 2, a restraining guide tube 3 that restrains the expansion of the pressurizing means 2, and a pressurizing plug 4 inserted into both ends of the tubular pressurizing means 2 are prepared. The pressurizing means 2 is sealed and a pressure increasing fluid is injected into the tubular pressurizing means 2 through the pressurizing plug 4.
The pressurizing plug 4 attached to one end is provided with an injection hole for injecting a pressure-increasing fluid, and the pressure-increasing fluid is supplied from the water storage tank 5 by the pump 6 via the valve 7.
A pressure gauge 8 is attached to the pressure plug 4 attached to the other end so as to detect the pressure of the tubular pressure means 2.

図2は、大口径管用の加圧プラグ式の実施状況を示す図である。
この方法は、増圧手段が管状の本体9と管状の本体9の外周部に設けられた加圧プラグ10からなる加圧体11、及び加圧体11の拡大を拘束する拘束ガイド管12からなり、管状の本体9を通して増圧用流体を加圧プラグ10に注入する。
管状の本体9の外周部に設けられた加圧プラグ10には管状の本体9を通して増圧用流体が注入される。増圧用流体は、貯水タンク5からポンプ6によりバルブ7を経由して供給される。
加圧プラグ10には圧力計8が取り付けられており、加圧プラグ10の圧力を検出するようにしている。
FIG. 2 is a diagram showing an implementation situation of a pressure plug type for a large-diameter pipe.
In this method, the pressure-increasing means includes a tubular body 9, a pressure body 11 including a pressure plug 10 provided on the outer periphery of the tubular body 9, and a restraint guide tube 12 that restrains the expansion of the pressure body 11. Then, a pressure increasing fluid is injected into the pressure plug 10 through the tubular body 9.
The pressurizing plug 10 provided on the outer peripheral portion of the tubular main body 9 is injected with a pressure increasing fluid through the tubular main body 9. The pressure increasing fluid is supplied from the water storage tank 5 via the valve 7 by the pump 6.
A pressure gauge 8 is attached to the pressure plug 10 so as to detect the pressure of the pressure plug 10.

図3は、圧力バッグ式の実施状況を示す図である。
この方法は、圧力バッグ13と、圧力バッグ13の拡張を拘束すると共に試験対象管1の両端部を拘束する端部拘束板14とからなり、両端の端部拘束板14がボルト、ナットにより固定されている管内耐圧試験機を使用するものである。
圧力バッグ13には端部拘束板14を通して増圧用流体が注入される。
増圧用流体の供給は上記各方式と同様に行われる。
図4は、ホース式の実施状況を示す図である。
この方法は、内圧がかけられるホース15と、試験対象管1の内部に挿入される仕切管16と、ホース15の拡張を拘束するとともに試験対象管1及び仕切管16の両端部を拘束する端部拘束板17と、からなり、両端の端部拘束板17はボルト、ナットにより固定されている管内耐圧試験機を使用するものである。
内圧がかけられるホース15は、試験対象管1の内部に挿入される前に予め仕切管16の外周部に巻付けておき、ホース15が巻き付けられた状態の仕切管16を試験対象管1の内周部に挿入して内圧をかける。
増圧用流体の供給は上記各方式と同様に行われる。
FIG. 3 is a diagram showing an implementation state of the pressure bag type.
This method includes a pressure bag 13 and end restraint plates 14 that restrain the expansion of the pressure bag 13 and restrain both ends of the test object tube 1. The end restraint plates 14 at both ends are fixed by bolts and nuts. The in-pipe pressure tester is used.
The pressure increasing fluid is injected into the pressure bag 13 through the end restraining plate 14.
Supply of the pressure-increasing fluid is performed in the same manner as in each of the above systems.
FIG. 4 is a diagram showing an implementation state of the hose type.
This method includes a hose 15 to which an internal pressure is applied, a partition tube 16 inserted into the test target tube 1, and an end that constrains expansion of the hose 15 and both ends of the test target tube 1 and the partition tube 16. The constraining plate 17 is used, and the end constraining plates 17 at both ends use an in-pipe pressure tester fixed by bolts and nuts.
The hose 15 to which the internal pressure is applied is wound around the outer periphery of the partition tube 16 in advance before being inserted into the test target tube 1, and the partition tube 16 with the hose 15 wound is connected to the test target tube 1. Insert the inner circumference and apply internal pressure.
Supply of the pressure-increasing fluid is performed in the same manner as in each of the above systems.

次に、管内耐圧試験方法について説明する。
管内耐圧試験では、まず、試験対象管の内部に加圧手段を挿入し、加圧手段の内部に増圧手段によって流体圧を加えて加圧手段内部を増圧し、加圧手段の外周部によって試験対象管の内部を加圧する。
図1の加圧プラグ式では、試験対象管1の長手方向両側に拘束ガイド管3を装着し、管状の加圧手段2の両端に加圧プラグ4を装着して管状の加圧手段2をシールする。
その後、加圧プラグ4に設けられた流体注入孔から流体を圧入して管状の加圧手段2の内圧を上げて管状の加圧手段2を膨張させ試験対象管1に間接的に圧力をかける。
図2の加圧プラグ式では、管状の本体9と管状の本体9の外周部に設けられた加圧プラグ10からなる加圧体11を試験対象管1の内部に装着し、加圧プラグ10の内部に流体圧を加えて増圧し、加圧体11の外周部を覆う加圧プラグ10
によって試験対象管1の内部を加圧する。
Next, the in-pipe pressure resistance test method will be described.
In the in-pipe pressure test, first, a pressurizing means is inserted into the test object pipe, and the pressure inside the pressurizing means is increased by applying fluid pressure to the inside of the pressurizing means. Pressurize the inside of the test tube.
In the pressure plug type of FIG. 1, the restraining guide tubes 3 are mounted on both sides in the longitudinal direction of the test object tube 1, and the pressure plugs 4 are mounted on both ends of the tubular pressurizing means 2 to connect the tubular pressurizing means 2. Seal.
Thereafter, a fluid is press-fitted from a fluid injection hole provided in the pressurizing plug 4 to increase the internal pressure of the tubular pressurizing means 2 to expand the tubular pressurizing means 2 and indirectly apply pressure to the test object tube 1. .
In the pressure plug type of FIG. 2, a pressure body 11 including a tubular main body 9 and a pressure plug 10 provided on the outer periphery of the tubular main body 9 is mounted inside the test object tube 1, and the pressure plug 10 The pressure plug 10 that increases the pressure by applying a fluid pressure inside the cover and covers the outer periphery of the pressure body 11
To pressurize the inside of the test object tube 1.

図3の圧力バッグ式では、試験対象管1の内部に加圧手段の圧力バッグ13を挿入した状態で試験対象管1の両端部に端部拘束板14を装着し、両端部の端部拘束板14をボルトとナットで締結する。
圧力バッグ13への流体圧入は、端部拘束板14を通して行う。
図4のホース式では、予め仕切管16の外周に加圧手段のホース15を巻き付け、ホース16を巻き付けた仕切管16を試験対象管1の内部に装着する。
試験対象管1の内部に加圧手段のホース15を巻き付けた状態で試験対象管1の両端部に端部拘束板17を装着し、両端部の端部拘束板17をボルトとナットで締結した後、端部拘束板17を通して加圧手段のホース15に流体を圧入する。
In the pressure bag type of FIG. 3, end restraint plates 14 are attached to both ends of the test object tube 1 in a state where the pressure bag 13 of the pressurizing means is inserted into the test object tube 1, and both end restraints are constrained. The plate 14 is fastened with bolts and nuts.
Fluid press-fitting into the pressure bag 13 is performed through the end restraint plate 14.
In the hose type of FIG. 4, a hose 15 as a pressurizing unit is wound around the outer periphery of the partition tube 16 in advance, and the partition tube 16 around which the hose 16 is wound is mounted inside the test target tube 1.
The end restraint plates 17 are attached to both ends of the test subject tube 1 in a state where the hose 15 of the pressurizing means is wound inside the test subject tube 1, and the end restraint plates 17 at both ends are fastened with bolts and nuts. Thereafter, fluid is pressed into the hose 15 of the pressurizing means through the end restraining plate 17.

上記の通り、本発明の耐圧試験では、試験対象管内に加圧手段を配備し、加圧手段内に圧力をかけることで試験対象管を間接的に加圧できるため試験対象管端部のシールが不要となる。
また、更生管では端部のシールが不要となるため短い試験対象管での試験が可能となり、 試験対象管の採取が容易となる。
さらに、採取した試験対象管について、現地で簡単に試験ができるため、大幅なコスト削減が可能となる。
As described above, in the pressure resistance test of the present invention, a pressurizing unit is provided in the test target tube, and the test target tube can be indirectly pressurized by applying pressure in the pressurizing unit. Is no longer necessary.
In addition, since the rehabilitated pipe does not require sealing at the end, it is possible to perform a test with a short test object pipe, and it is easy to collect the test object pipe.
In addition, the collected test tubes can be easily tested on-site, resulting in significant cost savings.

1 試験対象管
2 管状の加圧手段
3 拘束ガイド管
4 加圧プラグ
5 貯水タンク
6 ポンプ
7 バルブ
8 圧力計
9 管状の本体
10 加圧プラグ
11 加圧体
12 拘束ガイド管
13 圧力バッグ
14 端部拘束板
15 ホース
16 仕切管
17 端部拘束板
21 内プラスチックフィルム
22 樹脂吸着材
23 耐圧インターライナー
24 グラスファイバー複合樹脂吸着材
25 樹脂吸着材複合耐圧インターライナー
26 外プラスチックフィルム
DESCRIPTION OF SYMBOLS 1 Test object pipe 2 Tubular pressurizing means 3 Restraint guide pipe 4 Pressurization plug 5 Water storage tank 6 Pump 7 Valve 8 Pressure gauge 9 Tubular main body 10 Pressurization plug 11 Pressurization body 12 Restraint guide pipe 13 Pressure bag 14 End Restraint plate 15 Hose 16 Partition tube 17 End restraint plate 21 Inner plastic film 22 Resin adsorbent 23 Pressure-resistant interliner 24 Glass fiber composite resin adsorbent 25 Resin adsorbent composite pressure-resistant interliner 26 Outer plastic film

Claims (10)

管体の耐圧力試験用の管内耐圧試験機であって、
内部の圧力を上げて外周部で試験対象管体内を加圧する加圧手段と、
前記加圧手段の内部の圧力を上げる増圧手段と、
を含むことを特徴とする管内耐圧試験機。
An in-pipe pressure tester for a pressure test of a pipe body,
A pressurizing means for increasing the internal pressure and pressurizing the test target tube at the outer periphery;
A pressure increasing means for increasing the pressure inside the pressure means;
In-pipe pressure resistance tester characterized by including.
前記加圧手段は、ゴムまたは樹脂製の管状の加圧手段、圧力バッグまたはホースからなることを特徴とする請求項1記載の管内耐圧試験機。   The in-pipe pressure tester according to claim 1, wherein the pressurizing means comprises a tubular pressurizing means, a pressure bag or a hose made of rubber or resin. 前記増圧手段は、管状の加圧手段、前記管状の加圧手段の拡大を拘束する拘束ガイド管及び前記管状の加圧手段の両端に挿入する加圧プラグからなり、前記加圧プラグで加圧手段をシールするとともに前記加圧プラグを通して増圧用流体を前記加圧手段内に注入することを特徴とする請求項1記載の管内耐圧試験機。   The pressure-increasing means includes a tubular pressure means, a restraining guide tube that restrains the expansion of the tubular pressure means, and pressure plugs inserted into both ends of the tubular pressure means. 2. The in-pipe pressure resistance tester according to claim 1, wherein the pressure means is sealed and a pressure increasing fluid is injected into the pressure means through the pressure plug. 前記増圧手段は、管状の本体と前記管状の本体の外周部に設けられた加圧プラグから成る加圧体、及び前記加圧体の拡大を拘束する拘束ガイド管からなり、前記管状の本体を通して増圧用流体を加圧プラグに注入することを特徴とする請求項1記載の管内耐圧試験機。   The pressure-increasing means includes a tubular body, a pressure body including a pressure plug provided on an outer peripheral portion of the tubular body, and a restraining guide tube that restrains expansion of the pressure body, and the tubular body The in-pipe pressure resistance tester according to claim 1, wherein a pressure-increasing fluid is injected into the pressure plug through the tube. 前記増圧手段は、圧力バッグと、圧力バッグの拡張を拘束すると共に前記試験対象管の両端部を拘束する端部拘束板とからなり、両端の前記端部拘束板はボルト、ナットにより固定されることを特徴とする請求項1記載の管内耐圧試験機。   The pressure-intensifying means includes a pressure bag and end restraint plates that restrain the expansion of the pressure bag and restrain both ends of the test object tube, and the end restraint plates at both ends are fixed by bolts and nuts. The in-pipe pressure resistance tester according to claim 1. 前記増圧手段は、内圧がかけられるホースと、前記試験対象管の内部に挿入される仕切管と、前記ホースの拡張を拘束するとともに前記試験対象管及び前記仕切り管の両端部を拘束する端部拘束板と、からなり、
両端の前記端部拘束板はボルト、ナットにより固定されることを特徴とする請求項1記載の管内耐圧試験機。
The pressure increasing means includes a hose to which an internal pressure is applied, a partition tube inserted into the test target tube, and an end for constraining expansion of the hose and for constraining both ends of the test target tube and the partition tube. A part restraint plate,
The in-pipe pressure resistance tester according to claim 1, wherein the end restraint plates at both ends are fixed by bolts and nuts.
試験対象管の内部に加圧手段を挿入する段階と、
加圧手段の内部に増圧手段によって流体圧を加えて前記加圧手段内部を増圧し、前記加圧手段の外周部によって前記試験対象管の内部を加圧する段階と、
を含むことを特徴とする管内耐圧試験方法。
Inserting a pressurizing means inside the test tube;
A step of applying fluid pressure to the inside of the pressurizing means to increase the pressure inside the pressurizing means, and pressurizing the inside of the test object tube by the outer peripheral portion of the pressurizing means;
In-pipe pressure resistance test method characterized by including.
前記内部を加圧する段階は、
前記試験対象管の長手方向両側に拘束ガイド管を装着する段階と、
前記管体の両端に加圧プラグを装着して前記管体をシールする段階と、
前記加圧プラグに設けられた流体注入孔から流体を圧入する段階と、
からなることを特徴とする請求項7記載の管内耐圧試験方法。
Pressurizing the interior comprises:
Attaching restraint guide tubes on both longitudinal sides of the test object tube;
Attaching pressure plugs to both ends of the tubular body to seal the tubular body;
Injecting fluid from a fluid injection hole provided in the pressure plug; and
The in-pipe pressure resistance test method according to claim 7, comprising:
前記内部を加圧する段階は、
前記試験対象管の内部に加圧手段の圧力バッグを挿入した状態で前記試験対象管の両端部に端部拘束板を装着し、前記両端部の端部拘束板をボルトとナットで締結する段階と、
前記端部拘束板を通して前記加圧手段の圧力バッグに流体を圧入する段階と、
からなることを特徴とする請求項7記載の管内耐圧試験方法。
Pressurizing the interior comprises:
A step of attaching end restraint plates to both ends of the test subject tube with the pressure bag of the pressurizing means inserted inside the test subject tube, and fastening the end restraint plates of the both ends with bolts and nuts. When,
Injecting fluid into the pressure bag of the pressurizing means through the end restraint plate;
The in-pipe pressure resistance test method according to claim 7, comprising:
前記内部を加圧する段階は、
仕切管の外周に加圧手段のホースを巻き付ける段階と、
前記ホースを巻き付けた前記仕切管を前記試験対象管の内部に装着する段階と、
前記試験対象管の内部に加圧手段の前記ホースを巻き付けた状態で前記試験対象管の両端部に端部拘束板を装着し、前記両端部の端部拘束板をボルトとナットで締結する段階と、
前記端部拘束板及び前記端部拘束板を通して前記加圧手段のホースに流体を圧入する段階と、
からなることを特徴とする請求項7記載の管内耐圧試験方法。
Pressurizing the interior comprises:
Wrapping the pressure means hose around the outer periphery of the partition tube;
Attaching the partition tube around which the hose is wound to the inside of the test object tube;
A step of attaching end restraint plates to both ends of the test subject tube in a state where the hose of the pressurizing means is wound inside the test subject tube, and fastening the end restraint plates at both ends with bolts and nuts. When,
Pressing the fluid into the hose of the pressurizing means through the end restraint plate and the end restraint plate;
The in-pipe pressure resistance test method according to claim 7, comprising:
JP2012225915A 2012-10-11 2012-10-11 In-tube pressure resistance testing machine and testing method Pending JP2014077719A (en)

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CN108051288A (en) * 2017-12-28 2018-05-18 武汉科技大学 A kind of PE pipelines pressue device and method
CN109085066A (en) * 2018-08-27 2018-12-25 福建益峰科技有限公司 Plastic cement or fibre pipe deferent internal pressure detection structure and preparation method thereof
CN110376069A (en) * 2019-07-31 2019-10-25 河南智安工程检测有限公司 A kind of water-tight equipment for the test of multiple caliber plastic expects pipe material internal pressure-resistant
CN110553923A (en) * 2019-09-10 2019-12-10 中国水利水电科学研究院 Large-area flat rubber bag pressure-bearing deformation capacity testing device and testing method
CN112268809A (en) * 2020-10-21 2021-01-26 天津大学 Submarine pipeline bending moment and internal pressure combined action test device
CN112268808A (en) * 2020-10-21 2021-01-26 天津大学 Test method for combined action of bending moment and internal pressure of submarine pipeline

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