JPH02272181A - How to install twisted wires for heat pipe composite branch lines and composite branch lines - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention combines a heat pipe with a branch line that supports a supported object such as a telephone pole, and is configured to melt snow around the branch line.
The present invention relates to a twisted wire for use in a heat pipe composite branch line consisting of - and a method for attaching the composite branch line.

[Prior Art] Long erected structures such as telephone poles are usually provided with branch lines to prevent them from collapsing.

When the amount of snow increases in snowy areas, will the area around the above branch line be affected? - Due to the snow load, the snow compacts and a large settling force is generated in the dry direction. This sinking force is greater than expected and can cause utility poles to tilt and branch lines to break.

In order to prevent accidents caused by the settling force, workers must remove snow from around the branch line every time there is snow, which requires a great deal of effort, time, and cost.

Therefore, as a measure to solve the problem of such labor and expense, the applicants first proposed a heat pipe composite branch line in which a heat pipe is built inside the branch line.

This is made by twisting high tensile wires around the outer periphery of the heat pipe 10 as shown in Figure 6 to form a composite branch line. By breaking contact with the branch line, the settling force of the snow is not transmitted to the branch line, thereby preventing breakage of the branch line.

Figure 5 shows a heat pipe composite branch line IA with the above configuration.
It is an explanatory diagram showing how the utility pole 3 is supported by the
2 is an anchor for tensioning and fixing the branch line IA.

The combined heat pipe 10 consists of a pipe-shaped sealed container, in which a working fluid capable of evaporating and condensing is sealed, and as shown in FIG.
is buried underground, while the heat dissipation section 10b is placed within the branch line above ground.

The working fluid absorbs geothermal heat in the heat collecting section 10a and evaporates, and the vapor moves to the heat radiating section 10b, where it is condensed and liquefied, returns to the heat collecting section 1.0a, and evaporates again. This process is repeated. Heat is released when the steam is condensed in the heat radiating portion 10b, and the snow 20 around the branch line is melted.

[Problem to be solved by the invention] The composite branch line I can be connected to the composite branch line I using the composite heat pipe tube 10.
In order to move the enemy around A, a long one of about 5 to 10 m is required, and the heat collecting part 10a shown in FIG.
It is also necessary to have a burial depth of 3 m or more to form a hole.

Conventionally, in order to construct such a composite branch line IA #A, the fourth
As shown in the figure, the above required lengths are P1 to Pipe 10.
A tummy bar 11.11 is arranged between the tummy bars 11 and 10, and a stranded wire made of high tensile strength wire is attached to the outer periphery]-1), 1. Twist the wires b together to form a long composite stranded wire, - [1 Tummy bar 1.1
A mark was placed at the location, and when installing, the stranded wire was cut at the marked part, and this was strung as a composite branch line IA of the required length on utility pole 3, etc., as shown in Figure 5. However, according to the above method, it is necessary to carefully cut the heat pipe 1-1 while checking the position of the tamper par 1-1, which is poor in rapid mass production, and there is a risk of accidentally cutting the heat pipe 10. If the heat pipe 10 is cut, the working fluid inside will flow out and the heat exchange function will no longer be exhibited, and the heat pipe 10 will have to be discarded.

Furthermore, since the length of the heat pipe 10 is determined at the beginning and twisted together as twisted wires, it is impossible to freely change the length after that. In the actual process of burying heat pipes, it is often necessary to change the originally planned design length depending on the local rock condition, other geological conditions, geothermal conditions, etc. In many cases, it may be necessary to replace the pipe. However, when manufactured by the above-mentioned conventional method, there is a problem in that the entire composite branch line must be replaced in response to the above-mentioned change request.

In addition, so to speak, unnecessary dummy pars 11 are twisted 1
．． Even if the wires are stranded, there will be unnecessary parts, which is wasteful.

The object of the present invention is to solve the problems of the prior art as described above, and to provide a stranded wire for a heat pipe composite branch line, which allows heat pipes to be installed on-site and to easily replace the heat pipes if necessary. The present invention attempts to provide a method for attaching a heat pipe composite branch line.

[Means for Solving the Problems] The present invention provides a stranded wire formed by twisting together a reinforcing pipe having a hollow passage into which the P1 to Pipe can be inserted, together with a stranded wire. +'tr,! The first step is to cut the n-strand stranded wire to a required length, insert a heat pipe of the required length into the hollow passage of the reinforcing pipe, bury one end in the ground, and stretch it over the object to be supported. This is the main point of Section 2.

Since only the reinforcing pipe and the stranded wire are twisted together as an intermediate product, long stranded wires can be manufactured continuously with high productivity, and the work when inserting the tummy bar is reduced. If heat pipes are inserted on-site, their length and performance can be selected to best suit the local conditions, and it is even possible to replace them after they get old. becomes.

[Example 1 of Actual Cone] Below, reference will be made to Examples 1 to 1 for explaining the present invention. Fig. 1 is a longitudinal cross-sectional view of a stranded branch wire 1 according to the present invention, and Fig. 2 is a cross-sectional view thereof. be.

1a is a reinforcing pipe having a hollow passage into which a heat pipe can be inserted, and 1b is a twisted wire made of high tensile strength wires twisted around the outer circumference of the reinforcing pipe.

The material of the reinforcing pipe 1a may be any material as long as it has the required strength, and examples include, but are not limited to, galvanized steel pipes, aluminum or aluminum alloy pipes, stainless steel pipes, anti-rust treated pipes, clad material pipes, etc. It is only necessary to select an appropriate value from among them, taking into consideration underground burial and contact with copper as a heat pipe.

It goes without saying that the stranded wire 1b needs to have sufficient strength as a branch wire, and a wire with excellent corrosion resistance and high tensile strength, such as a galvanized steel wire or an aluminum-coated steel wire, is usually selected. .

Further, although the figure shows an example in which only one layer is twisted together, it goes without saying that a structure in which a plurality of layers are twisted together may also be used.

The stranded branch wire 1 is carried to the site, stretched between a utility pole 3 and an anchor 2, and cut to a required length before being buried underground, as shown in FIG. 5, for example.

For installation as described above, once the stranded branch wire 1 is cut to length and temporarily installed, the heat pipe 10 is inserted from one of the cut ends as shown in FIG.
As shown in Figure 5, one end of it is buried underground.

The heat pipe composite branch line IA is installed as described above, and the heat pipe 10 can be selected at the site as appropriate, so the deviation will depend on the depth of the immediate installation part, the geothermal condition, the ground topography, and the schedule. It is possible to install an i-me pipe under optimal conditions by taking into account the amount of snowfall that will occur.

Regarding M1iJ9 of the heat pipe 10, there are those in which the inner or outer circumference of the pipe remains smooth, and those in which many irregularities are formed on these surfaces to improve heat exchange characteristics.
There are products with different performance, such as those that move hydraulic fluid quickly.

According to the present invention, if it is found that the performance of the heat pipe selected from among them is insufficient, it is possible to immediately replace it with a one with better performance, and the depth of burial and the length of the above-ground part can be changed. If you find that there is an excess or deficiency, you are free to replace it with a length that can correct it, and it becomes possible to ensure optimal conditions in this sense.

Heat pipes that have been used for many years and whose performance has deteriorated can be replaced with new ones to increase thermal efficiency.

[Effects of the Invention] As described above, according to the present invention, stranded wires for branch wires can be manufactured efficiently with high productivity, and waste of materials can be eliminated, which has economic advantages. The ability to install heat pipes in accordance with practical efficiency is of great significance, as it is possible to select and install heat pipes under optimal conditions suited to the site, and to replace them immediately if necessary.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a stranded branch wire according to the present invention, FIG. 2 is a cross-sectional view thereof, FIG. An explanatory M% Ilf view showing the MIt of the heat pipe composite branch line, Fig. 5 is an explanatory diagram showing the I41 situation of the heat pipe composite branch line,
FIG. 6 is an explanatory diagram showing the operation of the heat pipe. 1: Twisted wire for composite branch line, IA: Heat pipe composite branch line, 1a: Reinforcement pipe, 1b: Stranded wire, 3: Utility pole, 10: Heat pipe, 11: Tammy bar agent Patent attorney Fujio Sato 4th Ward IA composite Branch line Figure 6

Claims (2)

[Claims] (1) A stranded wire for a heat pipe composite branch line, which is made by twisting together a reinforcing pipe with a hollow passage into which a heat pipe can be inserted, together with a stranded wire. (2) A reinforcing pipe having a hollow passage into which a heat pipe can be inserted is twisted together with a stranded wire, and a stranded wire is cut to the required length, and a heat pipe of the required length is placed inside the hollow passage of the reinforcing pipe. A heat pipe composite branch line installation method that involves inserting a pipe, burying one end underground, and stretching it to a support object.