JP2021070976A - Pipeline washing system and pipeline washing method - Google Patents

Pipeline washing system and pipeline washing method Download PDF

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JP2021070976A
JP2021070976A JP2019198277A JP2019198277A JP2021070976A JP 2021070976 A JP2021070976 A JP 2021070976A JP 2019198277 A JP2019198277 A JP 2019198277A JP 2019198277 A JP2019198277 A JP 2019198277A JP 2021070976 A JP2021070976 A JP 2021070976A
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pipeline
fluid
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shaft member
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JP7412736B2 (en
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太郎 大岡
Taro Ooka
太郎 大岡
伸吉 大岡
Shinkichi Ooka
伸吉 大岡
張　満良
Mitsuyoshi Cho
満良 張
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Yoshika Engineering Co Ltd
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Abstract

To provide a pipeline washing system and a pipeline washing method that can be applied to various shapes of pipe-lines and have a high removal effect on deposit adhering to a pipeline.SOLUTION: A pipeline washing system 10 that removes the deposit in a pipeline 20 by injecting sherbet-like fluid 12 into a section 11 to be washed of the pipeline under pressure comprises: fluid injection means 30 that pressurizes and injects fluid into the section to be washed and moves the fluid in an axial direction of the pipe-line; and moving force acting means 40 that is arranged in the section to be washed and exerts moving force on the fluid in a circumferential direction of the pipeline.SELECTED DRAWING: Figure 1

Description

本発明は、管路洗浄システム及び管路洗浄方法に関し、特に、シャーベット状の流動体を用いて管路内を洗浄する管路洗浄システム及び管路洗浄方法に関する。 The present invention relates to a pipeline cleaning system and a pipeline cleaning method, and more particularly to a pipeline cleaning system and a pipeline cleaning method for cleaning the inside of a pipeline using a sherbet-like fluid.

流体等を流す管路、例えば、上水道管や下水道管、工場における原料や燃料等を送るパイプ、又は家庭内での排水パイプ等の管路は、それらの多様な用途に合わせて様々な形態で用いられている。さらに、管路を流れる物体は、液体に限られず、気体、固体等、様々な形態のものがある。 Pipes for flowing fluids, such as water supply pipes and sewer pipes, pipes for sending raw materials and fuel in factories, and drainage pipes in homes, are in various forms according to their various uses. It is used. Further, the object flowing through the pipeline is not limited to a liquid, but may have various forms such as a gas and a solid.

これらの管路は、長期間の使用により管路内に夾雑物等が堆積した堆積物が付着する。例えば、下水道管では、管路内に排出された生活排水や産業排水に含まれる汚物等が管路の内壁に付着し、堆積物が形成される。また、上水道管は、一般に、堆積物が付着しにくい構成になっているが、水道水に含まれるミネラル分や濾過をくぐり抜けた微細な異物や有機物等により、管路の内壁にぬめり等が付着し、時間の経過とともに堆積していく。 With long-term use, these pipelines have deposits of impurities and the like adhered to them. For example, in a sewer pipe, domestic wastewater discharged into the pipe and filth contained in industrial wastewater adhere to the inner wall of the pipe to form sediment. In addition, water supply pipes are generally configured so that deposits do not easily adhere to them, but slime etc. adheres to the inner wall of the pipeline due to minerals contained in tap water, fine foreign substances and organic substances that have passed through filtration, etc. However, it accumulates over time.

このような堆積物の付着による詰まり等の不具合を防止するために、管路は、定期的に洗浄することが必要である。 In order to prevent problems such as clogging due to the adhesion of such deposits, it is necessary to clean the pipeline regularly.

管路の洗浄方法として、従来、管路内に洗浄用ピグを挿入して移動させるピグ方式（例えば、特許文献１）や、管路内に挿入されたホースの先端に取付けられたノズルから洗浄水を噴射するノズル方式（例えば、特許文献２）が知られている。しかしながら、これらの方式では、多様な形状の管路に適用することが困難であり、近年では、これらの方式に替わる方法として、シャーベット状の流動体を用いた洗浄方法が注目されている（特許文献３）。 Conventionally, as a method for cleaning a pipeline, a pig method in which a cleaning pig is inserted into the pipeline and moved (for example, Patent Document 1) or a nozzle attached to the tip of a hose inserted in the pipeline is used for cleaning. A nozzle method for injecting water (for example, Patent Document 2) is known. However, it is difficult to apply these methods to pipelines of various shapes, and in recent years, a cleaning method using a sherbet-like fluid has attracted attention as an alternative method to these methods (patented). Document 3).

この洗浄方法では、液体中に小さな氷粒子を含むシャーベット状の流動体を管路内に加圧注入し、流動体を移動させることにより、管路内の堆積物を除去する。具体的には、流動体が管路内を移動する際に、流動体を構成する氷粒子が管路の内壁に付着した堆積物に接触、衝突等することによって、堆積物に物理的な外力を加えられ、堆積物が削り取られる。削り取られた堆積物は、流動体とともに管路の排出口から排出される。 In this cleaning method, a sherbet-like fluid containing small ice particles in the liquid is pressure-injected into the pipeline, and the fluid is moved to remove the deposits in the pipeline. Specifically, when the fluid moves in the pipeline, the ice particles that make up the fluid come into contact with or collide with the sediment attached to the inner wall of the pipeline, causing a physical external force on the sediment. Is added and the deposits are scraped off. The scraped sediment is discharged from the outlet of the pipeline together with the fluid.

特開２００１−１９１０４５号公報Japanese Unexamined Patent Publication No. 2001-191045 特開平９−１０７１６号公報Japanese Unexamined Patent Publication No. 9-10716 特許第４６５３９２１号公報Japanese Patent No. 4653921

シャーベット状の流動体を用いた洗浄方法では、管路の曲がり部分や狭窄部分、Ｔ型連結管等の複雑な形状の管路、さらには下水道管の伏越し部に対して、流動体を通過させて堆積物をスムーズに排出させることが可能であり、固体の洗浄ピグを管路内に挿入するピグ方式や、水を噴射するノズル方式と比べて、多様な形状の管路の洗浄に適するという利点がある。 In the cleaning method using a sherbet-like fluid, the fluid passes through the curved or narrowed portion of the pipeline, the complex-shaped pipeline such as a T-shaped connecting pipe, and the overturned portion of the sewer pipe. It is possible to discharge the deposit smoothly, and it is suitable for cleaning various shapes of pipelines compared to the pig method in which a solid cleaning pig is inserted into the pipeline and the nozzle method in which water is sprayed. There is an advantage.

しかしながら、シャーベット状の流動体を用いた方法では、流動体を単に管路の長さ方向に直線状に流動させているだけであるため、固体の洗浄用ピグを堆積物に衝突させるものと比べて堆積物を掻き取る効果が低くなるという問題がある。それ故、シャーベット状の流動体を用いた管路洗浄方法において、より堆積物除去効果の高い方法の開発が望まれていた。 However, in the method using a sherbet-like fluid, since the fluid is simply flowed linearly in the length direction of the pipeline, it is compared with the method in which a solid cleaning pig collides with the sediment. There is a problem that the effect of scraping off the sediment is reduced. Therefore, it has been desired to develop a method having a higher effect of removing deposits in a pipeline cleaning method using a sherbet-like fluid.

本発明は、上記課題に鑑みてなされたものであり、その目的は、シャーベット状の流動体を用いて管路内を洗浄する管路洗浄方法及び管路洗浄システムにおいて、管路内に付着した堆積物に対して高い除去効果を有する管路洗浄システム及び管路洗浄方法を提供することにある。 The present invention has been made in view of the above problems, and an object of the present invention is to adhere to the inside of a pipeline in a pipeline cleaning method and a pipeline cleaning system for cleaning the inside of a pipeline using a sherbet-like fluid. It is an object of the present invention to provide a pipeline cleaning system and a pipeline cleaning method having a high removal effect on deposits.

上記目的を達成するために本発明は、
シャーベット状の流動体を管路の洗浄対象区間内に加圧注入して、管路内の堆積物を除去する管路洗浄システムにおいて、
前記洗浄対象区間内に前記流動体を加圧注入して前記管路の管軸方向に移動させる流動体注入手段と、
前記洗浄対象区間内に配置され、前記流動体に管路周方向への移動力を作用させる移動力作用手段と、を備えたことを特徴とする。 In order to achieve the above object, the present invention
In a pipeline cleaning system in which a sherbet-like fluid is pressurized and injected into a section to be cleaned of a pipeline to remove deposits in the pipeline.
A fluid injection means that pressurizes and injects the fluid into the section to be cleaned and moves the fluid in the axial direction of the pipeline.
It is characterized in that it is provided in the section to be cleaned and is provided with a moving force acting means for exerting a moving force on the fluid in the circumferential direction of the pipeline.

この構成によれば、流動体注入手段及び洗浄対象区間内に配置された移動力作用手段により、シャーベット状の流動体が、管路周方向へ回転移動しながら且つ洗浄対象区間を管軸方向に流動するので、管路の内壁に付着した堆積物を掻き取る力が高くなり、堆積物に対して高い除去効果を発揮することができる。 According to this configuration, the sherbet-like fluid is rotationally moved in the circumferential direction of the conduit and the section to be cleaned is moved in the axial direction by the fluid injection means and the moving force acting means arranged in the section to be cleaned. Since it flows, the force for scraping off the deposits adhering to the inner wall of the pipeline is increased, and a high removal effect can be exerted on the deposits.

また、本発明に係る管路洗浄システムは、さらに、
前記移動力作用手段は、
設置状態で前記管軸方向に伸びる軸部材と、
前記軸部材に取付けられ、該軸部材を中心として管路周方向に回転可能又は回転不可に構成され、前記流動体に管路周方向への移動力を作用させる移動力作用部と、を備えたことを特徴とする請求項１に記載の管路洗浄システム。 Further, the pipeline cleaning system according to the present invention further
The moving force acting means
A shaft member that extends in the direction of the pipe axis in the installed state,
A moving force acting unit that is attached to the shaft member, is configured to be rotatable or non-rotatable in the circumferential direction of the pipeline around the shaft member, and exerts a moving force in the circumferential direction of the pipeline on the fluid. The pipeline cleaning system according to claim 1, wherein the line cleaning system is characterized in that.

この構成によれば、軸部材によって移動力作用部を洗浄対象区間内の所要の位置に配置させることができるとともに、流動体が移動力作用部に衝突した際に、この羽根部から受ける力によって、流動体を管路周方向へ移動させることができる。 According to this configuration, the moving force acting portion can be arranged at a required position in the section to be cleaned by the shaft member, and the force received from the blade portion when the fluid collides with the moving force acting portion. , The fluid can be moved in the circumferential direction of the conduit.

また、本発明に係る管路洗浄システムは、さらに、
前記移動力作用手段は、
設置状態で前記管軸方向に伸びる軸部材と、
該軸部材に取り付けられ、該軸部材に対して放射状に広がる羽根部を有する移動力作用部と、を備えたことを特徴とする。 Further, the pipeline cleaning system according to the present invention further
The moving force acting means
A shaft member that extends in the direction of the pipe axis in the installed state,
It is characterized in that it is provided with a moving force acting portion which is attached to the shaft member and has a blade portion which spreads radially with respect to the shaft member.

この構成によれば、軸部材によって移動力作用部を洗浄対象区間内の所要の位置に配置させることができるとともに、流動体が移動力作用部の羽根部に衝突した際に、この羽根部から受ける力によって、流動体を管路周方向へ移動させることができる。これにより、例えば、堆積物が多い領域など、洗浄対象区間内の所望の位置で流動体を管路周方向へ移動させることができ、堆積物除去効果を高めることができる。 According to this configuration, the moving force acting portion can be arranged at a required position in the section to be cleaned by the shaft member, and when the fluid collides with the blade portion of the moving force acting portion, from this blade portion. The force received allows the fluid to move in the circumferential direction of the conduit. As a result, the fluid can be moved in the circumferential direction of the pipeline at a desired position in the section to be cleaned, for example, in a region with a large amount of sediment, and the effect of removing sediment can be enhanced.

また、本発明に係る管路洗浄システムは、さらに、
前記軸部材は、可撓性を有する線状材であることを特徴とする。 Further, the pipeline cleaning system according to the present invention further
The shaft member is characterized by being a flexible linear material.

この構成によれば、軸部材が自由度の高い可撓性を有する線状材で形成されているため、曲がった管路であっても移動力作用手段を管路内に容易に配置することができる。また、軸部材によりシャーベット状流動体の流動が阻害されることを防止して、高い洗浄効果を得ることができる。 According to this configuration, since the shaft member is made of a linear material having a high degree of freedom and flexibility, the moving force acting means can be easily arranged in the pipeline even in a curved pipeline. Can be done. Further, it is possible to prevent the flow of the sherbet-like fluid from being hindered by the shaft member and obtain a high cleaning effect.

また、本発明に係る管路洗浄システムは、さらに、
前記移動力作用部は、前記軸部材を中心として管路周方向に回転可能に構成されたことを特徴とする。 Further, the pipeline cleaning system according to the present invention further
The moving force acting portion is characterized in that it is configured to be rotatable in the circumferential direction of the pipeline around the shaft member.

この構成によれば、移動力作用部を管路周方向に回転可能にすることにより、羽根部が抵抗になってのシャーベット状流動体の管軸方向への移動が阻害されることを防止することができる。 According to this configuration, by making the moving force acting portion rotatable in the circumferential direction of the conduit, it is possible to prevent the sherbet-like fluid from being hindered from moving in the tubular axis direction due to the resistance of the blade portion. be able to.

また、本発明に係る管路洗浄システムは、さらに、
前記移動力作用部の羽根部は、回転面に対して傾斜する傾斜面を有し、
前記移動力作用部は、前記傾斜面が前記流動体から受ける力が所定値を超えた場合に回転することを特徴とする。 Further, the pipeline cleaning system according to the present invention further
The blade portion of the moving force acting portion has an inclined surface that is inclined with respect to the rotating surface.
The moving force acting unit is characterized in that the inclined surface rotates when the force received from the fluid exceeds a predetermined value.

この構成によれば、シャーベット状の流動体が過剰に管路周方向へ回転移動してしまうことを防止することができる。 According to this configuration, it is possible to prevent the sherbet-like fluid from excessively rotating and moving in the circumferential direction of the pipeline.

また、本発明に係る管路洗浄システムは、さらに、
前記移動力作用部は、前記軸部材に間隔をおいて複数配置され、
各移動力作用部の管路周方向への回転によって前記軸部材に生じるねじりモーメントが全体として打ち消されるように、各移動力作用部の回転の向きが設定されていることを特徴とする。 Further, the pipeline cleaning system according to the present invention further
A plurality of the moving force acting portions are arranged on the shaft member at intervals.
It is characterized in that the direction of rotation of each moving force acting portion is set so that the torsional moment generated in the shaft member due to the rotation of each moving force acting portion in the circumferential direction of the pipeline is canceled as a whole.

この構成によれば、移動力作用部が軸部材に間隔をおいて複数配置される、すなわち、管軸方向に間隔をおいて複数配置されることで、洗浄対象区間内の広範囲で、移動力作用部により流動体に管路周方向への移動力を作用させることができ、洗浄効果を高めることができる。また、移動力作用部の管路周方向への回転した際には、軸部材にねじりモーメントが作用するが、各移動力作用部の回転の向きが、ねじりモーメントを全体として打ち消すように設定されていることにより、軸部材のねじれを抑えることができる。これにより、軸部材が受ける負荷を低減して軸部材の耐久性を高めることができる。 According to this configuration, a plurality of moving force acting portions are arranged on the shaft member at intervals, that is, a plurality of moving force acting portions are arranged at intervals in the pipe axis direction, so that the moving force acting portion is arranged over a wide range in the section to be cleaned. The working part can apply a moving force in the circumferential direction of the conduit to the fluid, and the cleaning effect can be enhanced. Further, when the moving force acting part rotates in the circumferential direction of the conduit, a twisting moment acts on the shaft member, but the direction of rotation of each moving force acting part is set so as to cancel the twisting moment as a whole. As a result, twisting of the shaft member can be suppressed. As a result, the load received on the shaft member can be reduced and the durability of the shaft member can be improved.

また、本発明に係る管路洗浄システムは、さらに、
前記軸部材を牽引して、前記移動力作用部を前記洗浄対象区間の一方側から他方側へ移動させる牽引手段を備えたことを特徴とする。 Further, the pipeline cleaning system according to the present invention further
The shaft member is towed, and the traction means for moving the moving force acting portion from one side to the other side of the cleaning target section is provided.

この構成によれば、洗浄対象区間内のいずれの領域においても、シャーベット状の流動体を管路周方向に移動させることができるので、洗浄対象区間内の全ての領域で堆積物を掻き取る力を高めて、堆積物除去効果を向上させることができる。 According to this configuration, the sherbet-like fluid can be moved in the circumferential direction of the pipeline in any region in the section to be cleaned, so that the force to scrape the sediment in all the regions in the section to be cleaned. Can be enhanced to improve the effect of removing deposits.

また、本発明に係る管路洗浄方法は、
シャーベット状の流動体を管路の洗浄対象区間内に加圧注入して前記管路の管軸方向に移動させ、管路内の堆積物を除去する管路洗浄方法において、
前記洗浄対象区間内に配置されて前記流動体に管路周方向への移動力を作用させる移動力作用手段によって、前記加圧注入した流動体を管路周方向へ移動させながら前記流動体を前記管軸方向に移動させることを特徴とする。 In addition, the pipeline cleaning method according to the present invention is:
In a pipeline cleaning method in which a sherbet-like fluid is pressurized and injected into a section to be cleaned of a pipeline and moved in the axial direction of the pipeline to remove deposits in the pipeline.
The fluid is moved in the circumferential direction of the pipeline by a moving force acting means that is arranged in the section to be cleaned and exerts a moving force on the fluid in the circumferential direction of the pipeline. It is characterized in that it is moved in the direction of the tube axis.

この構成によれば、洗浄対象区間内に配置された移動力作用手段により、シャーベット状の流動体が、管路周方向へ回転移動しながら洗浄対象区間を管軸方向に流動するので、管路の内壁に付着した堆積物を掻き取る力が高くなり、堆積物に対して高い除去効果を発揮することができる。 According to this configuration, the sherbet-like fluid flows in the section to be cleaned in the axial direction while rotating in the circumferential direction of the conduit by the moving force acting means arranged in the section to be cleaned. The force to scrape off the deposits adhering to the inner wall of the wall is increased, and a high removal effect can be exerted on the deposits.

本発明の管路洗浄システム及び管路洗浄方法によれば、洗浄対象区間内に配置された移動力作用手段により、シャーベット状の流動体を管路周方向へ回転移動させながら流動させることができる。これにより、管路の内壁に付着した堆積物を掻き取る力を高めて、堆積物の除去効果を高めることができる。 According to the pipeline cleaning system and the pipeline cleaning method of the present invention, the sherbet-like fluid can be fluidized while being rotationally moved in the circumferential direction of the pipeline by the moving force acting means arranged in the section to be cleaned. .. As a result, the force for scraping off the deposits adhering to the inner wall of the pipeline can be enhanced, and the effect of removing the deposits can be enhanced.

本発明の第１の実施形態の管路洗浄システムを模式的に示す断面図。The cross-sectional view which shows typically the pipeline cleaning system of 1st Embodiment of this invention. 図１に示す管路洗浄システムの要部拡大図。An enlarged view of a main part of the pipeline cleaning system shown in FIG. 図２のＡ−Ａ線に沿う断面図。FIG. 2 is a cross-sectional view taken along the line AA of FIG. 本発明の第２の実施形態の管路洗浄システムを模式的に示す断面図。FIG. 5 is a cross-sectional view schematically showing a pipeline cleaning system according to a second embodiment of the present invention. 本発明の第３の実施形態の管路洗浄システムを模式的に示す断面図。FIG. 5 is a cross-sectional view schematically showing a pipeline cleaning system according to a third embodiment of the present invention. 移動力作用部の他の例を示す図であって、（ａ）は設置状態における移動力作用部の側面図、（ｂ）は設置状態における移動力作用部の正面図。It is a figure which shows the other example of the moving force acting part, (a) is the side view of the moving force acting part in the installation state, (b) is the front view of the moving force acting part in the installation state. 移動力作用部の他の例を示す図であって、（ａ）は設置状態における移動力作用部の側面図、（ｂ）は移動力作用部の斜視図。It is a figure which shows the other example of the moving force acting part, (a) is the side view of the moving force acting part in an installed state, (b) is the perspective view of the moving force acting part.

（第１の実施形態）
図１は、本発明の第１の実施形態に係る管路洗浄システム１０を模式的に示す断面図であり、図２は、図１に示す管路洗浄システム１０の要部拡大図である。管路洗浄システム１０は、シャーベット状の流動体１２を用いて管路内の洗浄を行うものであり、管路の一例である下水道管２０と、下水道管２０の洗浄対象区間１１の上流側及び下流側の開口端部を閉鎖する閉鎖手段である蓋体３２，３３と、注入用配管３６を介して下水道管２０に流動体１２を加圧注入する流動体注入装置（流動体注入手段）３０と、洗浄対象区間１１内に配置され、流動体１２に管路周方向への移動力を作用させる移動力作用装置（移動力作用手段）４０と、排出用配管３８を介して洗浄対象区間１１に注入された流動体１２を回収する回収タンク５０と、迂回用配管７０と、を備える。この管路洗浄システム１０は、洗浄対象区間１１内にシャーベット状の流動体１２を加圧注入して、下水道管２０内の堆積物１８を除去する。 (First Embodiment)
FIG. 1 is a cross-sectional view schematically showing a pipeline cleaning system 10 according to a first embodiment of the present invention, and FIG. 2 is an enlarged view of a main part of the pipeline cleaning system 10 shown in FIG. The pipeline cleaning system 10 cleans the inside of the pipeline using a sherbet-like fluid 12, and is an example of the pipeline, the sewer pipe 20, the upstream side of the section 11 to be cleaned of the sewer pipe 20, and the upstream side of the section 11 to be cleaned. A fluid injection device (fluid injection means) 30 that pressurizes and injects the fluid 12 into the sewer pipe 20 via the lids 32 and 33, which are closing means for closing the opening end on the downstream side, and the injection pipe 36. The cleaning target section 11 is arranged in the cleaning target section 11 via a moving force acting device (moving force acting means) 40 for applying a moving force in the circumferential direction of the pipeline to the fluid 12 and a discharge pipe 38. A recovery tank 50 for collecting the fluid 12 injected into the sewage system 12 and a detour pipe 70 are provided. The pipeline cleaning system 10 pressurizes and injects a sherbet-like fluid 12 into the section 11 to be cleaned to remove the deposit 18 in the sewer pipe 20.

下水道管２０は、地面から所定の深さに埋設されており、下水道管２０の伸長方向に沿って所定の区間ごとにマンホール６１，６２が設置される。下水道管２０の内径は、例えば、約１５０〜６００ｍｍである。本実施形態では、隣り合うマンホール６１，６２の間の区間を下水道管２０の洗浄対象区間１１としている。洗浄対象区間１１の長さは、例えば、約１５〜３００ｍである。 The sewer pipe 20 is buried at a predetermined depth from the ground, and manholes 61 and 62 are installed at predetermined sections along the extension direction of the sewer pipe 20. The inner diameter of the sewer pipe 20 is, for example, about 150 to 600 mm. In the present embodiment, the section between the adjacent manholes 61 and 62 is the section 11 to be cleaned of the sewer pipe 20. The length of the section 11 to be cleaned is, for example, about 15 to 300 m.

蓋体３２，３３は、洗浄対象区間１１の開口端部を封鎖して、洗浄対象区間１１から水等が漏れないようにするものであり、金属製、樹脂製等、何れの材質のものであってもよい。本実施形態において蓋体３２，３３は、下水道管２０とマンホール６１，６２との接続部にそれぞれ設置され、注入用配管３６及び排出用配管３８のそれぞれの端部が連結される開口部３２ａ，３３ａを有する。 The lids 32 and 33 are made of any material such as metal or resin so as to block the opening end of the section 11 to be cleaned so that water or the like does not leak from the section 11 to be cleaned. There may be. In the present embodiment, the lids 32 and 33 are installed at the connection portions between the sewer pipe 20 and the manholes 61 and 62, respectively, and the openings 32a, in which the respective ends of the injection pipe 36 and the discharge pipe 38 are connected. It has 33a.

注入用配管３６及び排出用配管３８は、下水道管２０の洗浄対象区間１１と外部とを連通する配管であり、本実施形態では可撓性を有し、マンホール６１，６２の中にそれぞれ挿入される。注入用配管３６の一端は、蓋体３２の開口部３２ａに水密状態で連結され、他端側は、地上に配置された流動体注入装置３０に接続される。 The injection pipe 36 and the discharge pipe 38 are pipes that communicate the section 11 to be cleaned of the sewer pipe 20 with the outside, have flexibility in the present embodiment, and are inserted into the manholes 61 and 62, respectively. Ru. One end of the injection pipe 36 is connected to the opening 32a of the lid 32 in a watertight state, and the other end is connected to the fluid injection device 30 arranged on the ground.

流動体注入装置３０は、流動体１２を収容するタンクと、このタンク内の流動体１２を注入用配管３２に圧送する圧送手段であるスクリュポンプとを備える。本実施の形態において、流動体注入装置３０は、タンクと、スクリュポンプとを搭載した車両（以下、施工車両という）によって構成されている。スクリュポンプは、スクリュの回転数を調節することにより、流動体１２を注入用連通管に送り出す圧力を自由に変更することができる。 The fluid injection device 30 includes a tank for accommodating the fluid 12 and a screw pump as a pumping means for pumping the fluid 12 in the tank to the injection pipe 32. In the present embodiment, the fluid injection device 30 is composed of a vehicle equipped with a tank and a screw pump (hereinafter, referred to as a construction vehicle). The screw pump can freely change the pressure at which the fluid 12 is sent to the injection communication pipe by adjusting the rotation speed of the screw.

流動体１２は、水と氷粒子とを含むシャーベット状であって、管路内を移動可能な流動性を有する。流動体１２を構成する氷粒子の粒径（長径）は５ｍｍ以下であり、好ましくは平均粒径が約０．４ｍｍ以下である。また、流動体１２中の氷粒子の含氷率は６０％以上であり、好ましくは８０％以上である。流動体１２は塩分を含んでおり、これにより、氷粒子の周囲に存在する水を凍らせずに流動性を維持することができる。流動体１２中の塩分の割合は、例えば約３〜７質量％である。この流動体１２は、工場で生成された後、施工車に搭載された流動体注入装置３０のタンクに収容され、洗浄現場まで搬送される。なお、この施工車にシャーベット状の流動体１２を生成する製氷装置を搭載してもよい。 The fluid 12 is sherbet-like containing water and ice particles, and has fluidity that allows it to move in the pipeline. The particle size (major diameter) of the ice particles constituting the fluid 12 is 5 mm or less, and preferably the average particle size is about 0.4 mm or less. The ice content of the ice particles in the fluid 12 is 60% or more, preferably 80% or more. The fluid 12 contains salt, which allows the water present around the ice particles to maintain fluidity without freezing. The proportion of salt in the fluid 12 is, for example, about 3 to 7% by mass. After being generated at the factory, the fluid 12 is housed in the tank of the fluid injection device 30 mounted on the construction vehicle and transported to the cleaning site. The construction vehicle may be equipped with an ice making device that generates a sherbet-like fluid 12.

排出用配管３８の一端は、蓋体３３の開口部３３ａに水密状態で連結され、他端は回収タンク５０に連結される。回収タンク５０は、洗浄後の流動体１２を回収するためのタンクであり、地上に配置される。図示例では、流動体１２の移動を円滑にするために、排水用配管３８に吸引ポンプ５２を設けている。なお、吸引ポンプ５２及び回収タンク５０としてバキューム車を用いてもよい。 One end of the discharge pipe 38 is connected to the opening 33a of the lid 33 in a watertight state, and the other end is connected to the recovery tank 50. The recovery tank 50 is a tank for recovering the washed fluid 12 and is arranged on the ground. In the illustrated example, a suction pump 52 is provided in the drainage pipe 38 in order to facilitate the movement of the fluid 12. A vacuum truck may be used as the suction pump 52 and the recovery tank 50.

移動力作用装置４０は、軸部材４２と、軸部材４２に取付けられる少なくとも一つの移動力作用部４４とを備える。本実施形態では、複数の移動力作用部４４が、軸部材４２の伸長方向に間隔をおいて取付けられている。 The moving force acting device 40 includes a shaft member 42 and at least one moving force acting unit 44 attached to the shaft member 42. In the present embodiment, a plurality of moving force acting portions 44 are attached at intervals in the extension direction of the shaft member 42.

軸部材４２は、設置状態で下水道管２０の管軸方向に伸びるように配置される部材であり、例えば、ワイヤーやフレキシブルシャフト等の可撓性を有する線状材や棒状材、又はこれらを組み合わせて構成することができる。本実施形態では、軸部材４２として可撓性を有するワイヤーを用いている。設置状態において、軸部材４２は、蓋体３２，３３の中心部に形成された貫通孔に挿通されて下水道管２０のほぼ中央部に位置している。 The shaft member 42 is a member arranged so as to extend in the pipe axis direction of the sewer pipe 20 in the installed state, and is, for example, a flexible linear material such as a wire or a flexible shaft, a rod-shaped material, or a combination thereof. Can be configured. In this embodiment, a flexible wire is used as the shaft member 42. In the installed state, the shaft member 42 is inserted into a through hole formed in the central portion of the lids 32 and 33 and is located substantially in the central portion of the sewer pipe 20.

図３は、図２のＡ−Ａ線に沿う断面図である。なお、図３では下水道管２０内の流動体１２の記載を省略している。移動力作用部４４は、軸部材４２の外周を囲む筒状部４６と、筒状部４６の外周面に取付けられ、軸部材４２に対して放射状に広がる複数の羽根部４８とを有している。図３に示す例では、３つの羽根部４８を備えた移動力作用部４４が記載されているが、羽根部４８の数はこれに限られず１つ以上であればよい。 FIG. 3 is a cross-sectional view taken along the line AA of FIG. In FIG. 3, the description of the fluid 12 in the sewer pipe 20 is omitted. The moving force acting portion 44 has a tubular portion 46 that surrounds the outer periphery of the shaft member 42, and a plurality of blade portions 48 that are attached to the outer peripheral surface of the tubular portion 46 and extend radially with respect to the shaft member 42. There is. In the example shown in FIG. 3, a moving force acting unit 44 having three blade portions 48 is described, but the number of blade portions 48 is not limited to this and may be one or more.

移動力作用部４４は、軸部材４２を中心として軸部材４２の周方向（すなわち、設置状態における管路周方向）に回転可能に構成されている。具体的には、筒状部４６がベアリング等の軸受部材で構成されており、この筒状部４６を介して、複数の羽根部４８が周方向に回転可能に構成されている。 The moving force acting unit 44 is configured to be rotatable around the shaft member 42 in the circumferential direction of the shaft member 42 (that is, the circumferential direction of the pipeline in the installed state). Specifically, the tubular portion 46 is composed of a bearing member such as a bearing, and a plurality of blade portions 48 are configured to be rotatable in the circumferential direction via the tubular portion 46.

移動力作用部４４の各羽根部４８は、回転面（すなわち、設置状態において、下水道管２０の径方向に広がる面）に対して傾斜する傾斜面４９を有しており、この傾斜面４９が流動体１２から受ける力によって、羽根部４８が管路周方向に回転する。また、各移動力作用部４４の回転の向きは、各移動力作用部４４の回転によって前記軸部材に生じるねじりモーメントが全体として打ち消されるように設定されている。具体的には、１つの移動力作用部４４において、各傾斜面４９は、同じ方向を向くように傾斜しており、各羽根部４８には同じ方向の回転力が作用するように構成されている。一方、図２に示すように、隣り合う２つの移動力作用部４４は、互いの回転方向の向きが異なるように、羽根部４８の傾斜面４９の向きが異なっている。 Each blade portion 48 of the moving force acting portion 44 has an inclined surface 49 that is inclined with respect to a rotating surface (that is, a surface that extends in the radial direction of the sewer pipe 20 in the installed state), and the inclined surface 49 The blade portion 48 rotates in the circumferential direction of the pipeline due to the force received from the fluid body 12. Further, the direction of rotation of each moving force acting unit 44 is set so that the torsional moment generated in the shaft member due to the rotation of each moving force acting unit 44 is canceled as a whole. Specifically, in one moving force acting portion 44, each inclined surface 49 is inclined so as to face the same direction, and each blade portion 48 is configured to exert a rotational force in the same direction. There is. On the other hand, as shown in FIG. 2, the two adjacent moving force acting portions 44 have different orientations of the inclined surfaces 49 of the blade portions 48 so that the orientations of the two adjacent moving force acting portions 44 are different from each other.

さらに、本実施形態では、筒状部４６を構成する軸受部材の摩擦抵抗が比較的大きくなるように調整することにより、羽根部４８が周方向に回転し難くなっている。具体的には、移動力作用部４４の傾斜面４９が、流動体１２から受ける力が所定値を超えた場合に回転し、所定値以下の場合には回転しないように、軸受部材の摩擦係数が比較的大きく設定されている。 Further, in the present embodiment, the blade portion 48 is less likely to rotate in the circumferential direction by adjusting the frictional resistance of the bearing member constituting the tubular portion 46 to be relatively large. Specifically, the friction coefficient of the bearing member so that the inclined surface 49 of the moving force acting portion 44 rotates when the force received from the fluid 12 exceeds a predetermined value and does not rotate when the force is less than the predetermined value. Is set relatively large.

迂回用配管７０は、下水道管２０を流れる下水を管路洗浄中に洗浄対象区間１１を迂回させて下水道管２０の下流側へ流す管路である。迂回用配管７０は、一方のマンホール６２から地上を経て他方のマンホール６１へと延びており、迂回用配管７０に取付けられたポンプ７２によって下水道管２０内の下水２２を汲み上げ、洗浄対象区間１１を迂回させて下流側へ流す。 The detour pipe 70 is a pipe that bypasses the section 11 to be washed and flows to the downstream side of the sewer pipe 20 while the sewage flowing through the sewer pipe 20 is being washed. The detour pipe 70 extends from one manhole 62 to the other manhole 61 via the ground, and the sewage 22 in the sewer pipe 20 is pumped up by the pump 72 attached to the detour pipe 70 to clean the section 11 to be cleaned. Detour and drain to the downstream side.

次に、上述した管路洗浄システム１０による下水道管２０の洗浄方法について説明する。 Next, a method of cleaning the sewer pipe 20 by the above-mentioned pipeline cleaning system 10 will be described.

まず、下水道管２０に対して迂回用配管７０を設置し、迂回用配管７０のポンプ７６を作動させて下水２２を迂回用配管７０側へ流す。また、下水道管２０の洗浄対象区間１１内に移動力作用装置４０を挿入して、洗浄対象区間１１の両端部に蓋体３２，３３を設置する。移動力作用装置４０は、例えば、一方のマンホール６１内に挿入した後、図示していない牽引装置を用いて、軸部材４２の一端部を他方のマンホール６２まで牽引することにより、洗浄対象区間１１内に挿入することができる。次に、洗浄対象区間１１の上流側に位置する蓋体３２の開口部３２ａに注入用配管３６の一端部を連結し、他端部に流動体注入装置３０を接続する。また、洗浄対象区間１１の下流側に位置する蓋体３３の開口部３３ａに排出用配管３８の一端部を連結して、排出用配管３８の他端部に回収タンク５０を接続する。洗浄対象区間１１内には、注入用配管３６に接続された図示していない接続管を介して水が充満される。 First, a detour pipe 70 is installed in the sewer pipe 20, and the pump 76 of the detour pipe 70 is operated to allow the sewage 22 to flow to the detour pipe 70 side. Further, the moving force acting device 40 is inserted into the cleaning target section 11 of the sewer pipe 20, and the lids 32 and 33 are installed at both ends of the cleaning target section 11. The moving force acting device 40 is, for example, inserted into one manhole 61 and then towed one end of the shaft member 42 to the other manhole 62 by using a traction device (not shown), thereby cleaning the section 11 to be cleaned. Can be inserted inside. Next, one end of the injection pipe 36 is connected to the opening 32a of the lid 32 located on the upstream side of the section 11 to be cleaned, and the fluid injection device 30 is connected to the other end. Further, one end of the discharge pipe 38 is connected to the opening 33a of the lid 33 located on the downstream side of the section 11 to be cleaned, and the recovery tank 50 is connected to the other end of the discharge pipe 38. The cleaning target section 11 is filled with water via a connecting pipe (not shown) connected to the injection pipe 36.

次に、流動体注入装置３０を作動させて、注入用配管３６を介して洗浄対象区間１１にシャーベット状の流動体１２を加圧注入する（流動体の加圧注入工程）。注入された流動体１２により、洗浄対象区間１１内に充填された水は、回収タンク５０に排出される。 Next, the fluid injection device 30 is operated to pressurize and inject the sherbet-like fluid 12 into the cleaning target section 11 via the injection pipe 36 (pressurized injection step of the fluid). The water filled in the section 11 to be washed by the injected fluid 12 is discharged to the recovery tank 50.

図１に示すように、本実施形態では流動体１２が洗浄対象区間１１の全域に亘って充填されるように流動体１２を注入している。洗浄対象区間１１内の流動体１２の移動速度は、約０．３〜１．０ｍ／ｓに設定されることが好ましい。流動体１２の移動速度は一定であってもよいし、所定の範囲内で変化させてもよい。例えば、作業開始直後の移動速度は遅く、作業終了間際は速くしてもよい。 As shown in FIG. 1, in the present embodiment, the fluid 12 is injected so that the fluid 12 is filled over the entire area to be cleaned. The moving speed of the fluid 12 in the section 11 to be cleaned is preferably set to about 0.3 to 1.0 m / s. The moving speed of the fluid 12 may be constant or may be changed within a predetermined range. For example, the moving speed immediately after the start of the work may be slow, and may be fast just before the end of the work.

図１及び図２に示すように、洗浄対象区間１１内において、流動体１２が移動力作用部４４の羽根部４８に衝突すると、流動体１２は羽根部４８の傾斜面４９から受ける力（反力）によって管路周方向へ移動する。具体的には、図１及び図２において白抜き矢印で示すように、流動体注入装置３０による管軸方向への推進力と、羽根部４８に衝突した際に受ける力によって、洗浄対象区間１１内を螺旋状に移動する。水道管２０の内壁に付着した堆積物１８は、流動体１２が接触、衝突等することによって擦り又は削り取られるが、このように、流動体１２を管路周方向へ回転移動させながら流動させることにより、堆積物１８を掻き取る力を高めて、堆積物１８の除去効果を高めることができる。 As shown in FIGS. 1 and 2, when the fluid 12 collides with the blade 48 of the moving force acting portion 44 in the section 11 to be cleaned, the fluid 12 receives a force (anti-reverse) from the inclined surface 49 of the blade 48. It moves in the circumferential direction of the pipeline by force). Specifically, as shown by the white arrows in FIGS. 1 and 2, the section 11 to be cleaned is determined by the propulsive force of the fluid injection device 30 in the pipe axis direction and the force received when the blade portion 48 collides with the blade portion 48. It moves in a spiral. The deposit 18 adhering to the inner wall of the water pipe 20 is scraped or scraped off by the contact, collision, etc. of the fluid 12, and in this way, the fluid 12 is made to flow while rotating in the circumferential direction of the pipeline. As a result, the force for scraping the deposit 18 can be increased, and the effect of removing the deposit 18 can be enhanced.

洗浄対象区間１１を通過した流動体１２及び取り除かれた堆積物１８等は、排出用配管３８を経て回収タンク５０内へ排出される。排出用配管３８には図示していない水質監視装置が接続され、この水質監視装置により排出物の濁度、温度、管路内圧力等が監視される。 The fluid 12 that has passed through the section 11 to be cleaned and the removed deposit 18 and the like are discharged into the recovery tank 50 via the discharge pipe 38. A water quality monitoring device (not shown) is connected to the discharge pipe 38, and the turbidity, temperature, pressure in the pipeline, etc. of the discharged material are monitored by this water quality monitoring device.

洗浄に必要な量の流動体１２の注入が完了した後、注入用配管３６から洗浄対象区間１１内に水を流してフラッシングを行う。このフラッシングは水質監視装置によって所定の水質が確認されるまで行われる。洗浄後に下水道管２０内に残留したシャーベット状の流動体１２は、氷粒子が溶けることによって自然排出することができる。 After the injection of the amount of the fluid 12 required for cleaning is completed, water is flowed from the injection pipe 36 into the section 11 to be cleaned for flushing. This flushing is performed until a predetermined water quality is confirmed by the water quality monitoring device. The sherbet-like fluid 12 remaining in the sewer pipe 20 after cleaning can be naturally discharged by melting the ice particles.

上述したように、本実施形態の管路洗浄システム１０では、移動力作用装置４０により、シャーベット状の流動体１２を管路周方向へ回転移動させながら管軸方向に流動させることができるため、下水道管２０の内壁に付着した堆積物１８を掻き取る力を高めて、堆積物１８の除去効果を向上することができる。また、軸部材４２によって移動力作用部４４を洗浄対象区間１１内の所要の位置に配置させることができるので、例えば、堆積物１８が多い領域など、洗浄対象区間１１内の所望の位置で流動体１２を管路周方向へ移動させることができる。 As described above, in the pipeline cleaning system 10 of the present embodiment, the moving force acting device 40 can cause the sherbet-shaped fluid 12 to flow in the pipe axis direction while rotating and moving in the pipeline circumferential direction. The force for scraping the deposit 18 adhering to the inner wall of the sewer pipe 20 can be increased, and the effect of removing the deposit 18 can be improved. Further, since the moving force acting portion 44 can be arranged at a required position in the cleaning target section 11 by the shaft member 42, it flows at a desired position in the cleaning target section 11 such as a region having a large amount of deposits 18. The body 12 can be moved in the circumferential direction of the conduit.

また、移動力作用装置４０を構成する軸部材４２は、自由度の高い可撓性を有するワイヤーで形成されているため、洗浄対象となる下水道管２０が曲がった管路であっても管路内に容易に配置することができる。また、軸部材４２によりシャーベット状流動体１２の流動が阻害されることを防止して、高い洗浄効果を得ることができる。 Further, since the shaft member 42 constituting the moving force acting device 40 is formed of a wire having a high degree of freedom of flexibility, even if the sewer pipe 20 to be cleaned is a bent pipe, the pipe line It can be easily placed inside. Further, it is possible to prevent the flow of the sherbet-like fluid 12 from being hindered by the shaft member 42, and to obtain a high cleaning effect.

また、移動力作用部４４が軸部材４２に間隔をおいて複数配置されているので、洗浄対象区間１１内の広範囲で、流動体１２に管路周方向への移動力を作用させることができ、洗浄効果を高めることができる。また、移動力作用部４４は、管路周方向に回転可能に構成されているため、羽根部４８が抵抗になっての流動体１２の管軸方向への移動が阻害されることを防止することができる。さらに、移動力作用部４４は、傾斜面４９が、流動体１２から受ける力が所定値を超えた場合に回転し、所定値以下の場合には回転しないように設定されているため、羽根部４８の回転によって、流動体１２が過剰に管路周方向へ回転移動してしまうことを防止することができる。これにより、移動力作用部４４の回転を制御する駆動源を備えた制御装置を設けることなく、流動体１２の移動速度を適切に保つことができる。 Further, since a plurality of moving force acting portions 44 are arranged on the shaft member 42 at intervals, it is possible to apply a moving force to the fluid 12 in the circumferential direction of the pipeline in a wide range in the section 11 to be cleaned. , The cleaning effect can be enhanced. Further, since the moving force acting portion 44 is configured to be rotatable in the circumferential direction of the pipeline, it is possible to prevent the blade portion 48 from acting as a resistance and hindering the movement of the fluid body 12 in the tubular axis direction. be able to. Further, the moving force acting unit 44 is set so that the inclined surface 49 rotates when the force received from the fluid 12 exceeds a predetermined value and does not rotate when the force is less than the predetermined value. The rotation of 48 can prevent the fluid 12 from excessively rotating and moving in the circumferential direction of the pipeline. As a result, the moving speed of the fluid 12 can be appropriately maintained without providing a control device provided with a drive source for controlling the rotation of the moving force acting unit 44.

また、移動力作用部４４の羽根部４８が管路周方向への回転した際には、軸部材４２にねじりモーメントが作用するが、各移動力作用部４４の回転の向きが、ねじりモーメントを全体として打ち消すように設定されていることにより、軸部材４２のねじれを抑えることができる。これにより、軸部材４２が受ける負荷を低減して軸部材４２の耐久性を高めることができる。 Further, when the blade portion 48 of the moving force acting portion 44 rotates in the circumferential direction of the pipeline, a torsional moment acts on the shaft member 42, but the direction of rotation of each moving force acting portion 44 causes the torsional moment. Since it is set to cancel as a whole, the twist of the shaft member 42 can be suppressed. As a result, the load received on the shaft member 42 can be reduced and the durability of the shaft member 42 can be improved.

なお、移動力作用部４４及び軸部材４２の大きさは、洗浄対象となる管路の内径に応じて適宜設定できるが、これらを管路内に導入しやすいように、洗浄対象となる管路の内径が２００φ以上であることが好ましく、洗浄対象区間１１の距離（長さ）は、２００ｍ以下であることが好ましい。 The sizes of the moving force acting portion 44 and the shaft member 42 can be appropriately set according to the inner diameter of the pipeline to be cleaned, but the pipeline to be cleaned can be easily introduced into the pipeline. The inner diameter of the section 11 is preferably 200φ or more, and the distance (length) of the section 11 to be cleaned is preferably 200 m or less.

（第２の実施形態）
次に、図４を用いて本発明の第２の実施形態の管路洗浄システム１０を説明する。なお、図４において、上述した第１の実施形態と同様の要素には、同一の符号を付し、その説明を省略する。 (Second Embodiment)
Next, the pipeline cleaning system 10 of the second embodiment of the present invention will be described with reference to FIG. In FIG. 4, the same elements as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

本実施形態の管路洗浄システム１０では、軸部材４２に１つの移動力作用部４４が取付けられている。また、管路洗浄システム１０は、軸部材４２を管軸方向に牽引する牽引装置（牽引手段）５５Ａ，５５Ｂを備えている。 In the pipeline cleaning system 10 of the present embodiment, one moving force acting unit 44 is attached to the shaft member 42. Further, the pipeline cleaning system 10 includes traction devices (traction means) 55A and 55B for traction of the shaft member 42 in the pipe axis direction.

牽引装置５５Ａ，５５Ｂは、軸部材４２を牽引して、移動力作用部４４を洗浄対象区間１１の一方側から他方側まで移動させるものである。本実施形態では、軸部材４２の一端部が牽引装置５５Ａに接続され、他端部が牽引装置５５Ｂに接続されている。図４では、牽引装置５５Ａ，５５Ｂを地上に配置しているが、牽引装置５５Ａ，５５Ｂはマンホール６１，６２内に配置される構成であってもよい。 The traction devices 55A and 55B pull the shaft member 42 to move the moving force acting portion 44 from one side to the other side of the section 11 to be cleaned. In the present embodiment, one end of the shaft member 42 is connected to the traction device 55A, and the other end is connected to the traction device 55B. In FIG. 4, the traction devices 55A and 55B are arranged on the ground, but the traction devices 55A and 55B may be arranged in the manholes 61 and 62.

本実施形態の管路洗浄システム１０では、図４において黒塗り矢印で示すように、洗浄対象区間１１内に流動体１２を注入して洗浄を行う際に、牽引装置５５Ａ，５５Ｂの牽引動作により、移動力作用部４４を洗浄対象区間１１の一端側から他端側に向かって移動させる。 In the pipeline cleaning system 10 of the present embodiment, as shown by the black arrows in FIG. 4, when the fluid 12 is injected into the cleaning target section 11 for cleaning, the traction operations of the traction devices 55A and 55B are performed. , The moving force acting portion 44 is moved from one end side to the other end side of the section 11 to be cleaned.

このように、移動力作用部４４を洗浄対象区間１１内で移動させることで、移動力作用部４４が１つの場合であっても、洗浄対象区間１１の全域において、流動体１２に管路周方向への移動力を作用させることができる。また、図示していないが、移動力作用部４４は、軸部材４２に間隔をおいて複数配置されていてもよく、かかる場合には、堆積物１８の除去効果をより向上させることができる。 By moving the moving force acting unit 44 within the cleaning target section 11 in this way, even if there is only one moving force acting unit 44, the conduit circumference to the fluid 12 in the entire area of the cleaning target section 11 A directional movement force can be applied. Further, although not shown, a plurality of moving force acting portions 44 may be arranged on the shaft member 42 at intervals, and in such a case, the effect of removing the deposit 18 can be further improved.

さらに、牽引装置５５Ａ，５５Ｂによる牽引方向を変更可能とすることにより、移動力作用部４４を洗浄対象区間１１内で管軸方向に往復移動させてもよい。往復移動させる場合、流動体１２の移動方向に沿って移動させる際と、流動体１２の移動方向に反して移動させる際とで、牽引速度を変化させてもよい。なお、流動体１２の移動方向に沿って移動力作用部４４を移動させる場合、移動力作用部４４の移動速度は、流動体１２の管軸方向の移動速度よりも遅くすることが好ましい。 Further, by making it possible to change the traction direction by the traction devices 55A and 55B, the moving force acting unit 44 may be reciprocated in the pipe axis direction within the cleaning target section 11. In the case of reciprocating movement, the traction speed may be changed depending on whether the fluid 12 is moved along the moving direction or the fluid 12 is moved in the direction opposite to the moving direction. When the moving force acting unit 44 is moved along the moving direction of the fluid body 12, the moving speed of the moving force acting unit 44 is preferably slower than the moving speed of the fluid body 12 in the tube axis direction.

なお、図４に示す例では、牽引装置５５Ａ，５５Ｂを用いて移動力作用部４４を移動させたが、牽引装置５５Ａ，５５Ｂを用いることなく、作業者が手動で軸部材４２を牽引してもよい。 In the example shown in FIG. 4, the moving force acting unit 44 was moved by using the traction devices 55A and 55B, but the operator manually pulled the shaft member 42 without using the traction devices 55A and 55B. May be good.

（第３の実施形態）
次に、図５を用いて本発明の第３の実施形態の管路洗浄システム１０を説明する。なお、図５において、上述した第１の実施形態と同様の要素には、同一の符号を付し、その説明を省略する。 (Third Embodiment)
Next, the pipeline cleaning system 10 of the third embodiment of the present invention will be described with reference to FIG. In FIG. 5, the same elements as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

本実施形態の管路洗浄システム１０は、流動体１２を用いて洗浄対象管路である上水道本管８０内を洗浄するものであり、上水道本管８０と、上水道本管８０と外部とを連通する複数の枝管８１，８２と、上水道本管８０の洗浄対象区間１１の上流側及び下流側の開口端部をそれぞれ閉鎖する閉鎖手段である制水弁９１ａ，９１ｂと、上水道本管８０内に流動体１２を加圧注入する流動体注入装置３０と、洗浄対象区間１１内に配置され、流動体１２に管路周方向への移動力を作用させる移動力作用装置４０と、洗浄対象区間１１に注入された流動体１２を回収する回収タンク５０と、を備える。 The pipeline cleaning system 10 of the present embodiment uses the fluid 12 to clean the inside of the water supply main 80, which is the pipeline to be cleaned, and communicates the water supply main 80, the water supply main 80, and the outside. A plurality of branch pipes 81 and 82, water control valves 91a and 91b which are closing means for closing the opening ends on the upstream side and the downstream side of the section 11 to be cleaned of the water supply main 80, and the inside of the water supply main 80. A fluid injection device 30 that pressurizes and injects the fluid 12 into the water supply, a moving force acting device 40 that is arranged in the cleaning target section 11 and exerts a moving force on the fluid 12 in the circumferential direction of the pipeline, and a cleaning target section. A recovery tank 50 for recovering the fluid 12 injected into 11 is provided.

上水道本管８０は、地面から所定の深さに埋設されており、管路の途中に複数の制水弁２４ａ，２４ｂが設置される。洗浄時には、上水道本管２０の洗浄対象区間１１の両端部に設置された制水弁９１，９２を閉じることで、洗浄対象区間１１における上水８９の流れを止めることができる。 The water supply main 80 is buried at a predetermined depth from the ground, and a plurality of water control valves 24a and 24b are installed in the middle of the pipeline. At the time of cleaning, the flow of clean water 89 in the cleaning target section 11 can be stopped by closing the water control valves 91 and 92 installed at both ends of the cleaning target section 11 of the water supply main 20.

枝管８１，８２は、上水道本管８０から分岐して地上へ延びる管路であって、上水道本管８０の伸長方向に所定の間隔をあけて複数設けられる。枝管８１，８２は、上水道本管８０の点検等に用いられ、通常、止水弁８３，８４を介して図示していない消火栓又は排泥管等が取付けられる。 The branch pipes 81 and 82 are pipelines that branch from the water supply main 80 and extend to the ground, and a plurality of branch pipes 81 and 82 are provided at predetermined intervals in the extension direction of the water supply main 80. The branch pipes 81 and 82 are used for inspection of the water supply main pipe 80 and the like, and usually, a fire hydrant or a mud drain pipe (not shown) is attached via the water stop valves 83 and 84.

複数の枝管８１，８２のうち、上水道本管８０の洗浄対象区間１１の一端部側に位置する枝管８１は、流動体１２を注入する注入用配管として用いられ、他端部側に位置する枝管８２は、流動体１２を排出する排出用配管として用いられる。図５に示す例では、枝管８１，８２が、地面から所定深さ掘った凹所９３，９４内に突出しており、枝管８１，８２に取付けられた止水弁８３，８４を介して、注入用配管である接続管９６及び排出用配管である接続管９７が連結されている。接続管９６は流動体注入装置３０に接続され、接続管９７は回収タンク５０に接続されている。 Of the plurality of branch pipes 81 and 82, the branch pipe 81 located on one end side of the section 11 to be cleaned of the water supply main pipe 80 is used as an injection pipe for injecting the fluid 12 and is located on the other end side. The branch pipe 82 is used as a discharge pipe for discharging the fluid 12. In the example shown in FIG. 5, the branch pipes 81 and 82 project into the recesses 93 and 94 dug to a predetermined depth from the ground, and are interposed through the water stop valves 83 and 84 attached to the branch pipes 81 and 82. , The connection pipe 96 which is the injection pipe and the connection pipe 97 which is the discharge pipe are connected. The connecting pipe 96 is connected to the fluid injection device 30, and the connecting pipe 97 is connected to the recovery tank 50.

移動力作用装置４０の移動力作用部４４は、枝管８１を介して上水道本管８０内に挿入される。具体的には、枝管８１内及び上水道本管８０の洗浄対象区間１１に注入される流動体１２に押されて移動力作用部４４が洗浄対象区間１１の上流側から下流側まで移動する。また、軸部材４２の一端部に取付けられた牽引装置５５Ａにより軸部材４２を牽引することで、洗浄対象区間１１の下流側に配置された移動力作用部４４を上流側に移動させることができる。 The moving force acting unit 44 of the moving force acting device 40 is inserted into the water supply main 80 via the branch pipe 81. Specifically, the moving force acting unit 44 moves from the upstream side to the downstream side of the cleaning target section 11 by being pushed by the fluid 12 injected into the branch pipe 81 and the cleaning target section 11 of the water supply main 80. Further, by pulling the shaft member 42 by the traction device 55A attached to one end of the shaft member 42, the moving force acting unit 44 arranged on the downstream side of the section 11 to be cleaned can be moved to the upstream side. ..

次に、上述した管路洗浄システム１０による上水道本管２０の洗浄方法について説明する。 Next, a method of cleaning the water supply main 20 by the above-mentioned pipeline cleaning system 10 will be described.

まず、枝管８１に接続管９６を介して流動体注入装置３０を接続し、枝管８２に接続管９７を介して回収タンク５０を接続する。また、制水弁９１，９２を閉じて洗浄対象区間１１の上水８９の流れを止める。 First, the fluid injection device 30 is connected to the branch pipe 81 via the connecting pipe 96, and the recovery tank 50 is connected to the branch pipe 82 via the connecting pipe 97. Further, the water control valves 91 and 92 are closed to stop the flow of the clean water 89 of the section 11 to be cleaned.

次に、止水弁８３，８４を開放し、流動体注入装置３０作動させ、洗浄対象区間１１内に流動体１２を加圧注入するとともに、移動力作用装置４０の移動力作用部４４を洗浄対象区間１１内に導入する。なお、洗浄対象区間１１内に残留している上水８９は、流動体１２の注入により下流側へ押し出されて排出される。 Next, the water stop valves 83 and 84 are opened, the fluid injection device 30 is operated, the fluid 12 is pressurized and injected into the section 11 to be cleaned, and the moving force acting portion 44 of the moving force acting device 40 is washed. It will be introduced in the target section 11. The clean water 89 remaining in the section 11 to be cleaned is pushed downstream by the injection of the fluid 12 and discharged.

その後、洗浄対象区間１１内に連続的に流動体１２を注入して、上水道本管８０内の洗浄を行う。この際、図５において黒塗り矢印で示すように、牽引装置５５Ａの牽引動作により、移動力作用部４４を洗浄対象区間１１の一端側から他端側（すなわち、下流側から上流側）に向かって移動させる。なお、図示していないが、移動力作用部４４は、軸部材４２に間隔をおいて複数配置されていてもよい。図５において白抜き矢印で示すように、流動体１２は、移動力作用部４４の羽根部４８に衝突して管路周方向へ移動する。 After that, the fluid 12 is continuously injected into the section 11 to be cleaned to clean the inside of the water supply main 80. At this time, as shown by the black arrows in FIG. 5, the traction operation of the traction device 55A causes the moving force acting portion 44 to move from one end side to the other end side (that is, from the downstream side to the upstream side) of the section 11 to be cleaned. To move. Although not shown, a plurality of moving force acting portions 44 may be arranged on the shaft member 42 at intervals. As shown by the white arrows in FIG. 5, the fluid body 12 collides with the blade portion 48 of the moving force acting portion 44 and moves in the circumferential direction of the pipeline.

洗浄対象区間１１を通過した流動体１２及び取り除かれた堆積物１８等は、枝管８２及び接続管９７を経て回収タンク５０内へ排出される。なお、図示していないが、接続管９７には水質監視装置が接続され、排出された流動体１２等の濁度、温度、管路内圧力等が監視される。洗浄に必要な量の流動体１２の注入が完了すると、止水弁８３を閉鎖する。次に、上流側の制水弁９１を開放して、上水８９を洗浄対象区間１１に流すことにより、上水道本管８０内の流動体１２を押し流して枝管８２から外部へ排出する。このような上水８９による洗浄対象区間１１のフラッシングは、水質監視装置によって所定の水質が得られるまで行われる。所定の水質が確認された後、止水弁８４を閉鎖し、制水弁９２を開放する。 The fluid 12 and the removed deposit 18 that have passed through the section 11 to be washed are discharged into the recovery tank 50 via the branch pipe 82 and the connecting pipe 97. Although not shown, a water quality monitoring device is connected to the connecting pipe 97 to monitor the turbidity, temperature, pressure in the pipe line, etc. of the discharged fluid 12 and the like. When the injection of the fluid 12 in the amount required for cleaning is completed, the water stop valve 83 is closed. Next, by opening the water control valve 91 on the upstream side and flowing the clean water 89 to the section 11 to be cleaned, the fluid 12 in the water supply main 80 is flushed and discharged from the branch pipe 82 to the outside. Such flushing of the section 11 to be washed with clean water 89 is performed until a predetermined water quality is obtained by the water quality monitoring device. After the predetermined water quality is confirmed, the water stop valve 84 is closed and the water control valve 92 is opened.

上述したように、本実施形態の管路洗浄システム１０では、移動力作用装置４０により、シャーベット状の流動体１２を管路周方向へ回転移動させながら管軸方向に流動させることができるため、上水道本管８０の内壁に付着した堆積物１８を掻き取る力を高めて、堆積物１８の除去効果を向上することができる。 As described above, in the pipeline cleaning system 10 of the present embodiment, the moving force acting device 40 can cause the sherbet-shaped fluid 12 to flow in the axial direction while rotating in the circumferential direction of the pipeline. The force for scraping the deposit 18 adhering to the inner wall of the water supply main 80 can be increased, and the effect of removing the deposit 18 can be improved.

なお、本発明は上述した各実施形態や変形例に限定されるものではなく、発明の趣旨を逸脱しない範囲で種々の変更が可能である。 The present invention is not limited to the above-described embodiments and modifications, and various modifications can be made without departing from the spirit of the invention.

例えば、本発明の管路洗浄システム１０は、下水道管路に限らず、工業用配管等、流動体１２が流入可能な多種の管路に適用することが可能である。 For example, the pipeline cleaning system 10 of the present invention can be applied not only to sewer pipelines but also to various pipelines into which fluid 12 can flow, such as industrial pipes.

また、例えば、図６に示すように、移動力作用部４４は、筒状部４６に取付けられた駆動モータ４７の駆動力によって、強制的に羽根部４８を管路周方向へ回転可能な構成であってもよい。駆動モータ４７には、軸部材４２内に配置される電力ケーブルを介して電力を供給することができる。かかる場合、羽根部４８は、傾斜面４９に代えて、軸部材４２の軸方向（設置状態における管軸方向）に対して平行な表面４８ａを有する構造であってもよい。 Further, for example, as shown in FIG. 6, the moving force acting portion 44 has a configuration in which the blade portion 48 can be forcibly rotated in the circumferential direction of the pipeline by the driving force of the drive motor 47 attached to the tubular portion 46. It may be. Electric power can be supplied to the drive motor 47 via a power cable arranged in the shaft member 42. In such a case, the blade portion 48 may have a structure having a surface 48a parallel to the axial direction of the shaft member 42 (the pipe axial direction in the installed state) instead of the inclined surface 49.

また、例えば、移動力作用部４４は、軸部材４２に対して固定され、軸部材４２に対して羽根部４６が管路周方向に回転不可な構造であってもよい。かかる場合であっても、流動体１２は、移動力作用部４４の羽根部４８に衝突した際に、羽根部４８から管路周方向への力（反力）を受けることになり、管路周方向へ移動しながら管軸方向へ進むことになる。 Further, for example, the moving force acting portion 44 may have a structure in which the blade portion 46 is fixed to the shaft member 42 and the blade portion 46 cannot rotate in the circumferential direction of the pipeline with respect to the shaft member 42. Even in such a case, when the fluid body 12 collides with the blade portion 48 of the moving force acting portion 44, the fluid portion 12 receives a force (reaction force) from the blade portion 48 in the circumferential direction of the pipeline, and the pipeline It will move in the direction of the pipe axis while moving in the circumferential direction.

また、例えば、移動力作用部４４は、図７に示すように、略円錐台状又は略円錐状の形状であってもよい。図７の移動力作用部４４は、円錐台状の本体部７２と、本体部７２の外周面に螺旋状に設けられた複数の突状羽根部７４とを有している。流動体１２は、移動力作用部４４の突状羽根部７２により螺旋形状に沿って管路周方向への移動力を受ける。この移動力作用部４４は、軸部材４２に固定されていてもよいし、軸部材４２を中心に回転可能な構成であってもよい。図７に示す例では、移動力作用部４４の小径側が、流動体１２の流れ方向の下流側となるように移動力作用部４４を配置しているが、小径側が流れ方向上流側となるように移動力作用部４４を配置してもよく、具体的には、移動力作用部４４によって管路洗浄のために流動体１２に周方向への回転力を付与する際に、図７において矢印で示すように、洗浄中に流動体１２が移動力作用部４４の小径側から大径側に移動するように配置する。これにより、流動体１２が移動力作用部４４の小径側から大径側に移動するにしたがって、流動体１２には下水道本管２０の内壁側に向かう力が付与されるので、内壁に付着した堆積物を除去する効果が高くなる。また、比較的体積の大きい移動力作用部４４を下水道本管内に導入することによって、下水道本管２０の内部空間を移動力作用部４４で埋めることができるので、流動体１２の使用量を低減させることができる。 Further, for example, the moving force acting unit 44 may have a substantially truncated cone shape or a substantially conical shape as shown in FIG. The moving force acting portion 44 of FIG. 7 has a truncated cone-shaped main body portion 72 and a plurality of protruding blade portions 74 spirally provided on the outer peripheral surface of the main body portion 72. The fluid body 12 receives a moving force in the circumferential direction of the pipeline along the spiral shape by the protruding blade portion 72 of the moving force acting portion 44. The moving force acting portion 44 may be fixed to the shaft member 42, or may be configured to be rotatable around the shaft member 42. In the example shown in FIG. 7, the moving force acting portion 44 is arranged so that the small diameter side of the moving force acting portion 44 is the downstream side in the flow direction of the fluid body 12, but the small diameter side is the upstream side in the flow direction. The moving force acting unit 44 may be arranged in the above. Specifically, when the moving force acting unit 44 applies a rotational force in the circumferential direction to the fluid body 12 for cleaning the pipeline, the arrow in FIG. As shown by, the fluid 12 is arranged so as to move from the small diameter side to the large diameter side of the moving force acting portion 44 during cleaning. As a result, as the fluid 12 moves from the small diameter side to the large diameter side of the moving force acting portion 44, a force is applied to the fluid 12 toward the inner wall side of the sewer main 20, so that the fluid 12 adheres to the inner wall. The effect of removing deposits is enhanced. Further, by introducing the moving force acting unit 44 having a relatively large volume into the sewer main, the internal space of the sewer main 20 can be filled with the moving force acting unit 44, so that the amount of the fluid 12 used can be reduced. Can be made to.

１０ 管路洗浄システム
１１ 洗浄対象区間
２０ 下水道管
３０ 流動体注入装置（流動体注入手段）
３２，３３ 蓋体
３６ 注入用配管
３８ 排出用配管
４０ 移動力作用装置（移動力作用手段）
４２ 軸部材
４４ 移動力作用部
４６ 筒状部
４８ 羽根部
４９ 傾斜面
５０ 回収タンク
５５Ａ，５５Ｂ 牽引装置（牽引手段）
６１，６２ マンホール
８０ 上水道本管 10 Pipeline cleaning system 11 Cleaning target section 20 Sewer pipe 30 Fluid injection device (fluid injection means)
32, 33 Lid body 36 Injection piping 38 Discharge piping 40 Moving force acting device (moving force acting means)
42 Shaft member 44 Moving force acting part 46 Cylindrical part 48 Blade part 49 Inclined surface 50 Recovery tank 55A, 55B Towing device (traction means)
61, 62 Manhole 80 Waterworks main

Claims (9)

シャーベット状の流動体を管路の洗浄対象区間内に加圧注入して、管路内の堆積物を除去する管路洗浄システムにおいて、
前記洗浄対象区間内に前記流動体を加圧注入して前記管路の管軸方向に移動させる流動体注入手段と、
前記洗浄対象区間内に配置され、前記流動体に管路周方向への移動力を作用させる移動力作用手段と、を備えたことを特徴とする管路洗浄システム。 In a pipeline cleaning system in which a sherbet-like fluid is pressurized and injected into a section to be cleaned of a pipeline to remove deposits in the pipeline.
A fluid injection means that pressurizes and injects the fluid into the section to be cleaned and moves the fluid in the axial direction of the pipeline.
A pipeline cleaning system, which is arranged in the section to be cleaned and includes a moving force acting means for exerting a moving force on the fluid in the circumferential direction of the pipeline. 前記移動力作用手段は、
設置状態で前記管軸方向に伸びる軸部材と、
前記軸部材に取付けられ、該軸部材を中心として管路周方向に回転可能又は回転不可に構成され、前記流動体に管路周方向への移動力を作用させる移動力作用部と、を備えたことを特徴とする請求項１に記載の管路洗浄システム。 The moving force acting means
A shaft member that extends in the direction of the pipe axis in the installed state,
A moving force acting unit that is attached to the shaft member, is configured to be rotatable or non-rotatable in the circumferential direction of the pipeline around the shaft member, and exerts a moving force in the circumferential direction of the pipeline on the fluid. The pipeline cleaning system according to claim 1, wherein the line cleaning system is characterized in that. 前記移動力作用手段は、
設置状態で前記管軸方向に伸びる軸部材と、
該軸部材に取り付けられ、該軸部材に対して放射状に広がる羽根部を有する移動力作用部と、を備えたことを特徴とする請求項１又は２に記載の管路洗浄システム。 The moving force acting means
A shaft member that extends in the direction of the pipe axis in the installed state,
The pipeline cleaning system according to claim 1 or 2, further comprising a moving force acting portion that is attached to the shaft member and has blade portions that radiate with respect to the shaft member. 前記軸部材は、可撓性を有する線状材であることを特徴とする請求項２又は３に記載の管路洗浄システム。 The pipeline cleaning system according to claim 2 or 3, wherein the shaft member is a flexible linear material. 前記移動力作用部は、前記軸部材を中心として管路周方向に回転可能に構成されたことを特徴とする請求項２〜３のいずれか１項に記載の管路洗浄システム。 The pipeline cleaning system according to any one of claims 2 to 3, wherein the moving force acting portion is configured to be rotatable in the circumferential direction of the pipeline around the shaft member. 前記移動力作用部の羽根部は、回転面に対して傾斜する傾斜面を有し、
前記移動力作用部は、前記傾斜面が前記流動体から受ける力が所定値を超えた場合に前記軸部材を中心として管路周方向に回転することを特徴とする請求項３に記載の管路洗浄システム。 The blade portion of the moving force acting portion has an inclined surface that is inclined with respect to the rotating surface.
The pipe according to claim 3, wherein the moving force acting unit rotates in the circumferential direction of the pipeline around the shaft member when the force received from the fluid on the inclined surface exceeds a predetermined value. Road cleaning system. 前記移動力作用部は、前記軸部材に間隔をおいて複数配置され、
各移動力作用部の管路周方向への回転によって前記軸部材に生じるねじりモーメントが全体として打ち消されるように、各移動力作用部の回転の向きが設定されていることを特徴とする請求項５又は６に記載の管路洗浄システム。 A plurality of the moving force acting portions are arranged on the shaft member at intervals.
The claim is characterized in that the direction of rotation of each moving force acting portion is set so that the torsional moment generated in the shaft member due to the rotation of each moving force acting portion in the circumferential direction of the conduit is canceled as a whole. 5 or 6 of the pipeline cleaning system. 前記軸部材を牽引して、前記移動力作用部を前記洗浄対象区間の一方側から他方側へ移動させる牽引手段を備えたことを特徴とする請求項２〜７のいずれか１項に記載の管路洗浄システム。 The invention according to any one of claims 2 to 7, further comprising a traction means for pulling the shaft member and moving the moving force acting portion from one side to the other side of the cleaning target section. Pipeline cleaning system. シャーベット状の流動体を管路の洗浄対象区間内に加圧注入して前記管路の管軸方向に移動させ、管路内の堆積物を除去する管路洗浄方法において、
前記洗浄対象区間内に配置されて前記流動体に管路周方向への移動力を作用させる移動力作用手段によって、前記加圧注入した流動体を管路周方向へ移動させながら前記流動体を前記管軸方向に移動させることを特徴とする管路洗浄方法。 In a pipeline cleaning method in which a sherbet-like fluid is pressurized and injected into a section to be cleaned of a pipeline and moved in the axial direction of the pipeline to remove deposits in the pipeline.
The fluid is moved in the circumferential direction of the pipeline by a moving force acting means that is arranged in the section to be cleaned and exerts a moving force on the fluid in the circumferential direction of the pipeline. A pipeline cleaning method characterized by moving in the axial direction of the pipe.
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CN114682585A (en) * 2022-04-26 2022-07-01 中南大学 Cleaning device and cleaning method for deep cleaning of filling pipeline
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