JPH0531347Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to multifunctional piping in which cables and the like for communication functions or power transmission functions are fixed with a lining material.

[Prior art] In recent years, with the advancement of information technology, technology for laying communication cables and power transmission cables in fluid transport pipes has been developed as one of the multi-purpose uses of fluid transport pipes, and is being implemented in some cases. . For example, Civil Engineering Technology 1987, Vol. 42, No. 5, "Development of Optical Fiber Cable Laying Technology for Sewage Pipes," pp. 97-102, describes a method for laying cables in liquid transport piping. There have been disclosed methods in which the cable is installed without a pipe, and methods in which the cable is fixed in the pipe with an anchor to prevent the cable from moving or vibrating due to the internal fluid.

[Problems to be solved by the invention] However, even with the method of fixing the cable in the piping with an anchor, the cable remains exposed in the piping, and the internal fluid may damage the cable sheathing material and cause damage to the communication cable. loss of function,
Because of problems such as the cable sheathing material melting into the internal fluid and degrading the quality of the internal fluid, the applicant has already filed an application for multifunctional piping in which cables, etc. are sandwiched between lining materials (Japanese Patent Application Laid-Open No. 01-98790). (Japanese Patent Laid-Open No. 01-97127). At the point where conduit equipment (valve, flow meter, etc.) is connected to such multifunctional piping, it is necessary to bypass cables and the like to the outside of the piping. The purpose of this invention is to provide multifunctional piping that allows easy bypass of cables, etc.

[Means and effects for solving the problem] This invention is a multi-functional piping that provides a communication function or a power transmission function to an existing or newly installed pipe for transporting fluids. The multi-functional piping is characterized in that the piping, which is fixed by being sandwiched between materials, is provided with a through hole through which the cable is communicated between the inside and outside, and is connected to a bypass pipe through which the cable is inserted.

Therefore, it is suitable for bypassing the cables, etc. in a part where there is conduit equipment of multifunctional piping in which cables, etc. that handle communication functions or power transmission functions are sandwiched and fixed between lining materials, and the cables, etc. can be pulled in. , which can be easily done without damaging the cable.

[Example] An example of the multifunctional piping of the present invention will be described below based on the drawings. Figure 1 is a vertical cross-sectional view of the part of the multifunctional piping where valves, flowmeters, and other piping equipment are present, and where a bypass curved pipe is attached to the multifunctional piping. 1 is the main pipe of the multifunctional piping. constitutes an outpost,
Felt 2 is made of, for example, polyester fiber and is impregnated with a hardening resin such as polyester resin or epoxy resin, and is attached to the inner surface of the main pipe 1. Reference numeral 3 denotes a coating film for sealing the felt 2, and the felt 2 and the coating film 3 constitute a lining. A communication or power transmission cable 4 is sandwiched and fixed between the main pipe 1 and the lining. 5 is a bypass pipe;
Reference numeral 6 indicates a bent pipe provided at a cable takeout portion from the main pipe, and 8 indicates a connecting pipe that communicates between the bent pipes 6.
The bent pipe 6 and the communication pipe 8 are connected by a flange 7. A communication or power transmission cable (hereinafter referred to as a cable) is passed through the bypass pipe 5 to bypass the installation point A of the conduit equipment. The structure for attaching the curved pipe 6 to the main pipe will be explained with reference to FIG. Reference numeral 11 designates a mounting plate for the curved pipe 6 constituting a part of the main pipe, and a cable take-out slit 12 is bored in this plate. The slit is long in the length direction of the main pipe.
Since it is narrow in the circumferential direction, it is easy to pull the cable into the bypass pipe, and at the same time, it prevents the relative strength of the lining from decreasing due to fluid pressure in the main pipe 1. The joining of the mounting plate 11 and the bent pipe 6 and the joining of the mounting plate 11 to the main pipe (B is the welding line) are normally done at the factory, but the joining of the mounting plate 11 to the main pipe 1 must be done on site. is also possible. When joining the mounting plate to the main pipe, the mounting plate 11 and the inner surface of the main pipe 1 must be aligned so that they are aligned.

Next, a case will be described in which the present invention is applied to existing piping and cables are laid to create multifunctional piping. Third
As shown in the figure, the conduit equipment attachment section 9 is provided with an underground pit 10, but this is a common practice and does not interfere with the installation work of the bypass pipe 5 through which the cable 4 is inserted. First, the internal scale of the main pipe 1 is removed and cleaned using a cleaning tool or a cleaning robot. Next, the bypass pipe 5 of the present invention is attached to the pipe equipment attachment part 9 of the main pipe 1. Next, the cable 4 is inserted into the main pipe 1 from the bypass pipe 5 and laid over the entire length of the main pipe 1. Thereafter, the inner wall of the main pipe 1 is lined with a lining material by a hose lining method or an in-situ method, and the cable 4 is terminally treated and the connecting pipe 8 is connected to the bent pipe 6 to complete the multifunctional piping.

When applying the present invention to newly installed piping, first, the main pipe 1 with the cable 4 fixed with a lining material is laid. Next, a mounting plate 11 is joined to the end of the main pipe 1, and the end of the cable 4 is placed outside the flange 7 of the bent pipe 6. Next, a separate cable is passed through the communication pipe 8, and this cable is connected to the cable 4 on the main pipe 1 side via a connector. Next, the connecting pipe 8 is joined to the bent pipe 6 with bolts to complete the installation of the multifunctional pipe. It should be noted that joining the mounting plate 11 and the bent pipe 6 to the main pipe 1 before laying the main pipe 1 is a design matter that can be appropriately accomplished by those skilled in the art.

[Effects of the invention] Since the present invention is configured as described above,
This is an effective idea for laying multi-functional piping, as even if there are conduit equipment in the middle of the main pipe, cables for communication or power transmission functions can be passed through without any hindrance.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view showing an embodiment of the multi-functional piping of the present invention, Fig. 2 is an external view taken along the - line in Fig. 1, and Fig. 3 is an existing piping of an embodiment of the multi-functional piping of the present invention. FIG. 3 is a plan view showing the pipe equipment section of FIG. 1...Main pipe, 2...Felt, 3...Coating film, 4...Cable, 5...Bypass pipe, 6...
...Bent pipe, 7...Flange, 8...Connection pipe, 9...
Pipe equipment installation part, 10... Underground pit, 11...
...Mounting plate, 12...Slit.

Claims (1)

[Scope of utility model registration request] In multifunctional piping that imparts a communication function or power transmission function to existing or newly installed piping for transporting liquids, a cable that handles the communication function or power transmission function is sandwiched and fixed between lining materials, and the cable is communicated inside and outside of the pipe. Multifunctional piping characterized in that a through hole is provided and a bypass pipe through which the cable is inserted is connected.