JPS63149489A - Long-sized pipe in which linear member is installed to inner surface - 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] [Object of the Invention] (Industrial Field of Application) The present invention relates to a long tube with linear members such as cables and piping installed on its inner surface. (Prior art) For example, nuclear fusion An observation device for observing the inner wall surface of a pressure vessel such as a vacuum vessel of an apparatus may be provided with a long tube having a cable or the like laid on the inner surface side.

To explain this specifically, the observation port of a pressure vessel such as the vacuum vessel must have a small diameter due to its structure. In order to observe the inside of the container from this observation port, a long and narrow observation device is required. At this time, in order to observe the inside of the container while maintaining a pressure such as a vacuum, it is necessary to provide an illumination device at the tip of the observation device, and for this purpose, a cable for supplying power is required. This cable is provided on the inner surface of the observation device.

Conventionally, a device as shown in FIG. 5 has been generally used for the above-mentioned observation.

That is, an observation port 2 is provided at the end of the container 1 which is in a special environment such as an ultra-high vacuum, and an observation device 3 is inserted into the interior of the container 1 through this observation port 2 to perform this internal observation. is inserted.

The most advanced part of this observation equipment 3 has a structure from inside to outside.
That is, a glass dome 4 is provided so that the inside of the container 1 can be observed. In addition, the observation port 2
A telescopic bellows 5 for entering and exiting the container 1 is connected thereto, and a sealing material 6 for ultra-high vacuum is interposed in this connection to prevent the observation equipment 3 from destroying the ultra-high vacuum of the container 1. It is configured to allow this access.

The larger the outer diameter of this sealing material 6, the greater the possibility of leakage, so it is customary not to make the sealing material 6 larger than the minimum required shape.

Inside the observation device 3, there is a periscope that transmits an image using a television camera or an optical system lens so that the image captured by the objective lens 7 installed at the tip can be seen at the top end of the observation device 3. 8 are arranged. This periscope 8 can rotate 360' so that the entire surrounding area can be observed, and the objective lens 7 at the lower end passes through the glass dome 4.
It is configured so that the inside of the container 1 can be observed.

In this case, a device for supplying light into the interior of the container 1 is required, so a lighting device 9 is installed near the glass dome 4. The electric cable 10 for the illumination device 9 must be laid from the power supply 11 on the atmospheric side to the tip of the observation equipment 3.

For this reason, the cable 10 is attached to the inner surface of the elongated outer cylinder 12 of the observation device 2, but the cable 10 is fixed with fasteners 13 at both ends of the outer cylinder 12, which are within reach of humans. , this middle part was generally free.

Inside this outer cylinder 12, the periscope 8 is arranged as described above, and since this periscope 8 rotates 360 degrees, there is a risk that the free part of the cable 10 may become entangled and cut due to this rotation. Ta.

Furthermore, since it is very difficult to install the conduit containing the cable 10 inside the outer tube 12 due to space limitations, it is common practice that no measures are taken to protect the cable 10 from being cut. It was the current situation.

Furthermore, since the cable 10 can only be fixed at the upper and lower ends of the outer tube 12 as described above, all of the weight of the cable 10 is concentrated at one point at the upper end, increasing the risk of breakage. was there.

Further, the periscope 8 is a rotating device, and in order to simplify maintenance, it is necessary to have a structure that allows it to be freely removed from the observation device 3. It was not possible to install it.

(Problems to be Solved by the Invention) As mentioned above, the space on the inner surface of the observation device 3 is narrow, but since the outer surface is in a special ultra-high vacuum environment, it is unavoidable to install cables, etc. on the inner surface. However, it was extremely difficult to route the wires inside the long and narrow device.

Furthermore, if the cable 10 is only fixed at both ends of the outer tube 12, the intermediate portion will loosen and hang down a little, and when the periscope 8 placed inside the outer tube 12 rotates 360 degrees, the cable 10 will bend. Not only is there a risk of the cables becoming tangled and being cut, but since the cable 10 is fixed at the uppermost end, all of its own weight is placed on the fixing portion at the uppermost end, and there is also a risk of cutting due to its own weight.

In view of the above, it is an object of the present invention to provide a long pipe in which a wire such as a cable is laid in a narrow swade on the inner surface, and the wire is protected to prevent the wire from being cut. .

[Structure of the invention]

(Means for solving m points between points) In order to achieve the above object, the present invention includes a long pipe provided with a plurality of perforations in the longitudinal direction, a pin protrudingly provided at a position corresponding to the perforations, and a cable etc. and a protective plate for supporting and protecting the linear member, and the protective plate is disposed inside the long tube and the pin is inserted into the perforation and fixed, so that the linear member is fixed. The member is installed within the long tube.

(Function) The pin protruding from the protection plate is inserted into the perforation of the long pipe, and the pin is fixed from the outside of the long pipe to fix the protection plate. By protecting the linear member, even if the periscope etc. rotates inside the long tube, the periscope etc. and the linear member are prevented from coming into contact with each other, and cuts caused by this rotation can be further dispersed to multiple locations. By supporting the linear member with the support, it is possible to prevent the linear member from being cut due to its own weight, and also to enable installation of the linear member in a narrow space.

(Embodiment) FIGS. 1 and 2 show an embodiment of the present invention in which a cable 10 is wired on the inner surface of the outer tube 12 of the observation device 3 shown in FIG. 5, that is, as a long tube. This shows an embodiment in which a cable 10 as a linear member is fixed to the inner surface of an outer cylinder 12.

That is, on the inner surface of the outer cylinder 12, on the outside of the periscope 8 which is rotatably disposed inside the outer cylinder 12, there is a protective plate 14 for supporting and protecting the cable 10, and at both ends of the protective plate 14, the outer cylinder 12
It is placed in contact with the inner surface of the

The protection plate 14 has a flat plate shape, and on the surface facing the outer cylinder 12, a plurality of cables 10 are arranged in parallel along the longitudinal direction, and both ends are spot welded or the like to form the protection plate 14.
4 and a fixed plate 15 fixed thereto.

In addition, on the surface of this protection plate 14 facing the outer cylinder 12,
Fixing pieces 16 are fixed at regular intervals, and pins 17 are attached to the fixing pieces 16 so as to protrude toward the outer cylinder 12.

A predetermined position of the outer cylinder 12, that is, this protective plate 14 is
A perforation 12a is provided at a position corresponding to the pin 17 that protrudes from the pin 17 when disposed on the inner surface of the
The protection plate 14 is fixed to the inner surface of the outer cylinder 12 by inserting a pin 17 therein and fixing the pin 17 to the outer cylinder 12 from the outside.

That is, after inserting the pin 17 into the perforation 12a, the outer cylinder 1
The periphery of the pin 17 is seal welded and fixed to the peripheral wall of the perforation 12a from the outside of the outer cylinder 12. After welding, the protruding part of the pin 17 is cut off to reduce the external space occupied by the outer cylinder 12.

FIG. 3 shows another embodiment, and the difference from the above embodiment is that the pin 17 attached to the fixing piece 16 has a screw 17'.
After positioning the outer cylinder 12 and the protection plate 14 using a After forming the pin 17 and welding it in the same manner as described above, the protruding portion is cut off as necessary.

The above-mentioned positioning of the outer cylinder 12 and the pin 17 is performed, for example, by the fourth
As shown in the figure, a guide string 18 is tied to the tip of the pin 17 (or fixed piece 16), and this guide string 18
This can be easily done by guiding the wire through the inside of the outer cylinder 12 to the outside through the perforation 12a and pulling the guide string 18.

Note that the linear member is not limited to the cable 10 described above, and for example, a thermal lightning pair, compressed air piping, oil piping, optical fiber cable, etc. can be used.

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are supported and protected by the protection plate 14, so even if the periscope 8 rotates, there is no direct contact with the periscope 8, and the risk of cutting can be avoided. In addition, no matter how long the pipe is, it is relatively easy to run wiring on the inner surface of the pipe without taking up much space, so the space on the inner surface can be used for other purposes. It can be used for.

Therefore, there is no need to expose cables, hoses, etc. to special environments such as ultra-high vacuum, which eliminates the need to use special cables, reduces costs, and eliminates the risk of damaging special environments. It is also possible to ensure the quality of cutting, etc.

〔Effect of the invention〕

Since the present invention has the above-described configuration, a linear member such as a cable can be easily and reliably installed inside the long tube, and there is very little risk of the linear member being cut.

Therefore, it is necessary to extract long and narrow equipment into special environments such as ultra-high vacuum.
Even when using Kiguchu, Raishu, 5n Urasho/Korayo Pairmei, etc., the cables and hoses have the effect of being easy to install while maintaining their quality.

[Brief explanation of the drawing]

1 and 2 show one embodiment of the present invention, FIG. 1 is a partially cut away perspective view, FIG. 2 is a cross-sectional plan view of FIG. 1, and FIG. 3 is another embodiment of the present invention. FIG. 4 is a perspective view showing the state before the protective plate is placed inside the long tube. FIG. 5 is a schematic view of a conventional vacuum container and its internal observation device. It is a front view. DESCRIPTION OF SYMBOLS 10... Cable (wire member), 12... Outer cylinder (long tube), 12a... Same perforation, 14... Protective plate, 15
...fixing plate, 16...fixing piece, 17...pin. Applicant's agent Sato - Yuu's funeral 4

Claims (1)

[Claims] A long tube with a plurality of perforations in the longitudinal direction, a protruding pin provided at a position corresponding to the perforations, and a protection plate for supporting and protecting a linear member such as a cable. The linear member is installed in the long tube by disposing a plate in the long tube and inserting the pin into the perforation and fixing it. A long pipe with parts installed.