Pipeline drying device

Abstract

Provided is a pipeline drying device capable of improving the durability of a rehabilitated pipeline after construction. 【Solution means】The pipeline drying device 100 includes a heater 130 that heats air 610, and a fan 120 that sends the air 620 heated by the heater to the inner wall surface of the existing pipeline 830 before the pipeline rehabilitation material is laid. The pipeline drying device uses the air heated by the heater to dry the inner wall surface of the existing pipeline prior to the laying of the pipeline rehabilitation material. Thereby, it is possible to prevent a gap due to residual moisture from occurring between the pipeline rehabilitation material laid thereafter and the inner peripheral surface 835 of the existing pipeline. As a result, the durability of the rehabilitated pipeline after construction can be improved.

Description

Technical Field

[0001] This specification discloses a technology related to a pipeline drying device.

Background Art

[0002] As a pipeline rehabilitation technology for rehabilitating existing pipelines buried underground, such as aging or damaged sewer and power pipelines, without excavation, a technology of laying a pipeline rehabilitation material in the existing pipeline is known. Patent Document 1 describes a pipeline rehabilitation technology in which a tubular pipeline rehabilitation material is drawn into an existing pipeline and then hardened in a state where the pipeline rehabilitation material is inflated in the existing pipeline.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the pipeline rehabilitation technology of Patent Document 1, when moisture remains in the existing pipeline, there is a problem that a gap is generated between the inner surface of the existing pipeline and the pipeline rehabilitation material, resulting in a decrease in the durability of the rehabilitated pipeline after construction.

Means for Solving the Problems

[0005] One form of the pipeline drying device disclosed in this specification includes a heater that heats air, and a fan that sends the air heated by the heater to the inner wall surface of the existing pipeline before the pipeline rehabilitation material is laid. This pipeline drying device uses the air heated by the heater to dry the inner wall surface of the existing pipeline prior to the laying of the pipeline rehabilitation material. As a result, it is possible to prevent a gap caused by residual moisture from occurring between the pipeline rehabilitation material laid later and the inner peripheral surface of the existing pipeline. Consequently, the durability of the rehabilitated pipeline after construction can be improved.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Modes for Carrying Out the Invention

[0007] FIG. 1 is an explanatory drawing showing a pipeline drying device 100 according to the first embodiment. The pipeline drying device 100 is a device for drying the inner peripheral surface 835 of an existing pipeline 830 before laying a pipeline rehabilitation material in a pipeline rehabilitation construction.

[0008] The existing pipeline 830 is buried in the ground 810. The existing pipeline 830 is connected to the ground through a manhole 820. The existing pipeline 830 is a pipeline such as a water supply pipe, a gas pipe, a power pipe, or a communication cable pipe.

[0009] The pipeline drying device 100 is a device installed and used on the ground 805. The pipeline drying device 100 includes a suction port 110, a fan 120, a heater 130, a blowout port 150, and a duct 170.

[0010] The suction port 110 of the pipeline drying device 100 is a passage for taking the air 610 around the pipeline drying device 100 into the inside of the pipeline drying device 100. The air 610 is the air on the ground 805.

[0011] The fan 120 of the pipeline drying device 100 generates a flow of air 610 from the suction port 110 to the blowout port 150. The fan 120 is an electric blower. The fan 120 sends the air 620 heated by the heater 130 to the inner peripheral surface 835 of the existing pipeline 830 before the pipeline rehabilitation material is laid.

[0012] The heater 130 of the pipeline drying device 100 heats the air 610 taken in from the suction port 110. The heater 130 is an electric heater. The heater 130 may be a gas heater.

[0013] The air outlet 150 of the pipeline drying device 100 is a passage for blowing out the air 620 heated by the heater 130.

[0014] The duct 170 of the pipeline drying device 100 is a pipeline for guiding the air 620 from the air outlet 150 into the existing pipeline 830. One end of the duct 170 is connected to the air outlet 150. The other end of the duct 170 is connected to the duct connection joint 175. The duct connection joint 175 is a device temporarily installed at the end of the existing pipeline 830. The duct connection joint 175 connects between the duct 170 and the existing pipeline 830 while sealing the end of the existing pipeline 830 so that the air 620 can flow. The duct 170 discharges the air 620 heated by the heater 130 into the existing pipeline 830. The duct 170 is a flexible duct having flexibility that can be freely bent.

[0015] According to the pipeline drying device 100 described above, the inner peripheral surface 835 of the existing pipeline 830 can be dried using the air 620 heated by the heater 130 prior to the laying of the pipeline rehabilitation material. Thereby, it is possible to prevent a gap due to residual moisture from occurring between the pipeline rehabilitation material laid later and the inner peripheral surface 835 of the existing pipeline 830. As a result, the durability of the rehabilitated pipeline after construction can be improved.

[0016] FIG. 2 is an explanatory diagram showing the pipeline drying device 200 of the second embodiment. The pipeline drying device 200 is a device for drying the inner peripheral surface 835 of the existing pipeline 830 before laying the pipeline rehabilitation material in the pipeline rehabilitation work.

[0017] The pipeline drying device 200 is a device that is arranged and used inside the existing pipeline 830. The pipeline drying device 200 includes a suction port 210, a fan 220, a heater 230, an air outlet 250, wheels 270, and a storage battery 280.

[0018] The suction port 210 of the pipeline drying device 200 is a passage for taking in the air 710 around the pipeline drying device 200 into the interior of the pipeline drying device 200. The air 710 is the air existing inside the existing pipeline 830.

[0019] The fan 220 of the pipeline drying device 200 generates a flow of air 710 from the suction port 210 to the air outlet 250. The fan 220 is an electric blower. The fan 220 sends out the air 720 heated by the heater 230 to the inner peripheral surface 835 of the existing pipeline 830 before the pipeline regeneration material is laid. The power source of the fan 220 is the battery 280. The power source of the fan 220 may also be the electric power supplied from the ground via a power cable.

[0020] The heater 230 of the pipeline drying device 200 heats the air 710 taken in from the suction port 210. The heater 230 is an electric heater. The power source of the heater 230 is the battery 280. The power source of the heater 230 may also be the electric power supplied from the ground via a power cable.

[0021] The air outlet 250 of the pipeline drying device 200 is a passage for blowing out the air 720 heated by the heater 230. The air outlet 250 discharges the air 720 heated by the heater 230 into the interior of the existing pipeline 830.

[0022] The wheels 270 of the pipeline drying device 200 are a moving means for the pipeline drying device 200 to move inside the existing pipeline 830. The wheels 270 are wheels equipped with an electric motor. The power source of the wheels 270 is the battery 280. The power source of the wheels 270 may also be the electric power supplied from the ground via a power cable. The pipeline drying device 200 moves inside the existing pipeline 830 according to a preset program. The pipeline drying device 200 may also move inside the existing pipeline 830 based on an instruction from a controller installed on the ground.

[0023] The pipeline drying device 200 may be provided with a camera configured to transmit the internal image of the existing pipeline 830 to the ground so that an operator on the ground can check the inside of the existing pipeline 830.

[0024] The pipeline drying device 200 may further include polishing means for polishing the inner peripheral surface 835 in order to remove dirt adhering to the inner peripheral surface 835 of the existing pipeline 830.

[0025] According to the pipeline drying device 200 described above, the inner peripheral surface 835 of the existing pipeline 830 can be dried prior to the laying of the pipeline rehabilitation material by using the air 720 heated by the heater 230. As a result, it is possible to prevent a gap caused by residual moisture from occurring between the pipeline rehabilitation material laid later and the inner peripheral surface 835 of the existing pipeline 830. As a result, the durability of the rehabilitated pipeline after construction can be improved.

[0026] The technology disclosed in this specification is not limited to the above-described embodiments, examples, and modifications, and can be realized in various configurations without departing from the gist thereof. For example, among the technical features in the above-described embodiments, examples, and modifications, those corresponding to the technical features in each form described in the column of the outline of the invention can be appropriately replaced and combined in order to solve some or all of the above-described problems or to achieve some or all of the above-described effects. In addition, technical features not described as essential in this specification can be appropriately deleted.

Description of Reference Numerals

[0027] 100... Pipeline drying device 110... Suction port 120... Fan 130... Heater 150... Outlet 170... Duct 175... Duct connection joint 200... Pipeline drying device 210... Suction port 220... Fan 230... Heater 250... Outlet 270... Wheels 280... Battery 610... Air 620... Air 710…Air 720…Air 805…Ground 810…Underground 820…Manhole 830…Existing pipeline 835…Inner peripheral surface

Claims

【Claim 1】 A pipeline drying device, a heater for heating air, a fan for sending out the air heated by the heater to the inner wall surface of an existing pipeline before the pipeline regenerating material is laid and comprising a pipeline drying device for drying the inner wall surface of the existing pipeline using the air heated by the heater prior to laying the pipeline regenerating material.

Images