JPH0459954B2 - - Google Patents
Info
- Publication number
- JPH0459954B2 JPH0459954B2 JP22473284A JP22473284A JPH0459954B2 JP H0459954 B2 JPH0459954 B2 JP H0459954B2 JP 22473284 A JP22473284 A JP 22473284A JP 22473284 A JP22473284 A JP 22473284A JP H0459954 B2 JPH0459954 B2 JP H0459954B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- lining material
- lining
- temperature
- low
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
- B29C2035/1616—Cooling using liquids
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、パイプ内に液状ライニング材及びラ
イニング用物体を入れ、前記パイプ内への加圧流
体供給により前記物体を前記パイプ内で圧送し、
前記ライニング材を前記物体により押し流しかつ
前記パイプの内面に塗布する方法に関する。Detailed Description of the Invention [Industrial Application Field] The present invention provides a method for placing a liquid lining material and a lining object in a pipe, and pressurizing the object through the pipe by supplying pressurized fluid into the pipe. ,
The present invention relates to a method for forcing the lining material by the object and applying it to the inner surface of the pipe.
従来、エポキシ系樹脂等の二液混合により硬化
する樹脂等の、硬化に長時間を要するものをライ
ニング材として用い、かつ、空気等の常温流体を
物体圧送に用いて、上記方法を実施していた〔例
えば特開昭57年54795号公報）。
Conventionally, the above method has been carried out by using a resin that takes a long time to harden, such as an epoxy resin that hardens by mixing two components, as the lining material, and using a room-temperature fluid such as air to pump the object. [For example, Japanese Patent Application Laid-open No. 54795 of 1982).
しかし、パイプ内面に塗布したライニング材
に、それが十分な強度に硬化する前に、物体圧送
のための高圧が作用するから、パイプに大きな孔
が存在すると、孔を閉塞した状態で塗布されたラ
イニング材が高圧流体の吹き抜けで破られてしま
い、補修が不完全になる危険性があり、より一層
の改良の余地があつた。
However, the high pressure for pumping the object acts on the lining material applied to the inner surface of the pipe before it hardens to sufficient strength. There was a risk that the lining material would be torn by the high-pressure fluid blowing through and the repair would be incomplete, leaving room for further improvement.
本発明の目的は、たとえパイプに大きな孔が存
在しても、その孔を閉塞するライニング材が物体
圧送用高圧流体で破られることが無いようにする
点にある。 An object of the present invention is to prevent the lining material that closes the hole from being ruptured by the high-pressure fluid for pumping objects even if the pipe has a large hole.
本発明の特徴手段は、液状ライニング材をパイ
プ内面に塗布する物体を圧送するための加圧流体
として、例えば低温液化ガスにより得られるもの
等の低温流体を用い、その低温流体の冷却作用で
塗布したライニング材を高粘度化させることにあ
り、その作用効果は次の通りである。
The characteristic means of the present invention is to use a low-temperature fluid, such as one obtained by low-temperature liquefied gas, as a pressurized fluid for pumping the object to which the liquid lining material is applied to the inner surface of the pipe, and apply the liquid lining material by the cooling effect of the low-temperature fluid. The purpose of this invention is to increase the viscosity of the lining material, and its effects are as follows.
〔作用〕
つまり、パイプに塗布されたライニング材を低
温流体により急冷によつて直ちに高粘度化させる
と共に、その高粘度状態を物体圧送時には低温流
体との接触で維持させることによつて、たとえパ
イプに大きな孔が存在しても、その孔を閉塞する
ライニング材の高圧流体による破れを効果的に防
止できる。[Function] In other words, by rapidly cooling the lining material applied to the pipe with a low-temperature fluid to immediately increase its viscosity, and by maintaining this high viscosity state by contact with the low-temperature fluid when pumping an object, even if the pipe Even if there are large holes in the lining, it is possible to effectively prevent the lining material that blocks the holes from being torn by high-pressure fluid.
その結果、物体圧送用高圧流体による悪影響の
無い状態で、良好なライニング処理を信頼性の高
い状態で行えるようになつた。
As a result, it has become possible to perform a good lining process with high reliability without the adverse effects of the high-pressure fluid for pumping objects.
次に、実施例を示す。 Next, examples will be shown.
第１図に示すように、ライニング処理対象とす
るパイプ１内に、その一端側から適量の液状ライ
ニング材２、及びパイプ内径とライニング厚さに
見合つた適当な直径のライニング用物体３を入れ
る。ライニング材２は、常温で硬化する液状樹
脂、例えばエポキシ樹脂、あるいは、常温で硬化
すると共に加熱で軟化する樹脂、例えばポリエチ
レンやポリ塩化ビニル等を、適度の流動性を有す
るように予め加熱したものである。 As shown in FIG. 1, an appropriate amount of liquid lining material 2 and a lining object 3 having an appropriate diameter commensurate with the inner diameter of the pipe and the thickness of the lining are placed into a pipe 1 to be lined from one end thereof. The lining material 2 is a liquid resin that hardens at room temperature, such as an epoxy resin, or a resin that hardens at room temperature and softens when heated, such as polyethylene or polyvinyl chloride, which has been preheated to have appropriate fluidity. It is.
第２図に示すように、パイプ１に蓋５を取付け
て、送風機６からパイプ１内に低温の加圧ガスを
供給し、物体３をパイプ１内で圧送すると共に、
物体３によりライニング材２を押し流しかつパイ
プ内面に塗布し、塗布したライニング材２を低温
ガスの冷却作用で硬化させて、ライニング層７を
パイプ内面全体に形成する。加圧ガスは、ボンベ
４内の低温液化ガス、例えば液化窒素や液化空気
等を気化して得られる極低温ガスである。 As shown in FIG. 2, a lid 5 is attached to the pipe 1, low-temperature pressurized gas is supplied from the blower 6 into the pipe 1, and the object 3 is fed under pressure within the pipe 1.
The lining material 2 is swept away by the object 3 and applied to the inner surface of the pipe, and the applied lining material 2 is hardened by the cooling action of the low-temperature gas to form a lining layer 7 on the entire inner surface of the pipe. The pressurized gas is a cryogenic gas obtained by vaporizing a low-temperature liquefied gas in the cylinder 4, such as liquefied nitrogen or liquefied air.
第３図に示すように、パイプ１の全長にわたる
ライニング処理が完了した状態で、パイプ１から
余剰のライニング材２及び物体３を回収すると共
に、送風機６を停止させた後、蓋５をパイプ１か
ら取外す。 As shown in FIG. 3, after the lining process over the entire length of the pipe 1 has been completed, excess lining material 2 and objects 3 are collected from the pipe 1, and after the blower 6 is stopped, the lid 5 is placed on the pipe 1. Remove from.
次に別の実施例を説明する。 Next, another embodiment will be described.
ライニング材２は、常温で硬化すると共に加熱
で軟化する樹脂であればいかなるものでも、良好
なライニング処理を迅速に行えて望ましいが、二
液混合型、熱硬化型、常温硬化型、その他各種特
性のものを利用できる。 The lining material 2 is preferably any resin that hardens at room temperature and softens when heated, as it can quickly perform a good lining treatment, but may be of a two-component mixed type, a thermosetting type, a room temperature curing type, or has other characteristics. You can use the following.
物体３の形状は球形状や砲弾状等、その他適当
に変形でき、また、物体３の材質や構造等も適宜
変形でき、さらに、複数個の物体３を連結して、
ライニング材２を物体３間に入れてもよい。 The shape of the object 3 can be changed into a spherical shape, a cannonball shape, etc., and the material and structure of the object 3 can also be changed as appropriate. Furthermore, by connecting a plurality of objects 3,
A lining material 2 may be inserted between the objects 3.
物体３を圧送するに、各種の低温ガスや低温液
を利用でき、要するに適当な低温流体を適当な温
度で用いればよい。 Various low-temperature gases and low-temperature liquids can be used to forcefully convey the object 3, and in short, any suitable low-temperature fluid may be used at an appropriate temperature.
対象とするパイプ１は、都市ガス用、天然ガス
用、水道用等の概設導管が一般的であるが、新し
い管であつてもよい。 The target pipe 1 is generally a general conduit for city gas, natural gas, water supply, etc., but may be a new pipe.
第１図ないし第３図は、本発明方法の手順を例
示する概念図である。
１……パイプ、２……ライニング材、３……物
体。
1 to 3 are conceptual diagrams illustrating the procedure of the method of the present invention. 1...Pipe, 2...Lining material, 3...Object.
Claims (1)
ング用物体３を入れ、前記パイプ１内への加圧流
体供給により前記物体３を前記パイプ１内で圧送
し、前記ライニング材２を前記物体３により押し
流しかつ前記パイプ１の内面に塗布する方法であ
つて、前記物体圧送用加圧流体として低温流体を
用い、その低温流体の冷却作用で塗布したライニ
ング材２を高粘度化させるパイプ内面用ライニン
グ方法。 ２ 前記ライニング材２として常温で硬化すると
共に加熱で軟化する樹脂を使用する特許請求の範
囲第１項に記載の方法。[Scope of Claims] 1. A liquid lining material 2 and a lining object 3 are placed in a pipe 1, and the object 3 is force-fed within the pipe 1 by supplying pressurized fluid into the pipe 1, and the lining material 2 is The method uses a low-temperature fluid as the pressurized fluid for pumping the object and increases the viscosity of the applied lining material 2 by the cooling effect of the low-temperature fluid. Lining method for the inner surface of pipes. 2. The method according to claim 1, wherein the lining material 2 is a resin that hardens at room temperature and softens when heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22473284A JPS61103586A (en) | 1984-10-25 | 1984-10-25 | Method for lining inner surface of pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22473284A JPS61103586A (en) | 1984-10-25 | 1984-10-25 | Method for lining inner surface of pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61103586A JPS61103586A (en) | 1986-05-22 |
| JPH0459954B2 true JPH0459954B2 (en) | 1992-09-24 |
Family
ID=16818373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22473284A Granted JPS61103586A (en) | 1984-10-25 | 1984-10-25 | Method for lining inner surface of pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61103586A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2530342B2 (en) * | 1987-09-30 | 1996-09-04 | 株式会社クボタ | Hard vinyl chloride lining method |
-
1984
- 1984-10-25 JP JP22473284A patent/JPS61103586A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61103586A (en) | 1986-05-22 |
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