JPS5822512A - Wire passing device - 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 The present invention relates to an electric wire penetration device for airtightly passing electric wires through a wall or the like of a nuclear reactor containment vessel.

Generally, when an electric wire is disposed through a wall that requires airtightness, such as a wall of a nuclear reactor containment vessel, in C2, an electric wire penetration device is provided at the penetrating portion of this wall to maintain airtightness. Conventionally, such a wire penetration device has been constructed as shown in FIGS. 1 and 2. That is, 1 is a reactor containment vessel.

A shield W2 is provided on the outside of the reactor containment vessel 1. A penetrating sleeve 3 is provided to airtightly cover the reactor containment vessel 1 and the shielding wall 2. A connecting pipe 4 is provided at the outer end of this penetrating sleeve 3.
are welded to each other, and a header plate 5 is airtightly attached to the end of this joint pipe 4. The through sleeve 3, joint pipe 4, and header plate 5 form a boundary, that is, an airtight wall of this portion. A plurality of penetration device modules 6 are provided passing through this header plate 5, and O-rings 21° 21 are interposed between these penetration device modules 6 and the header plate 5 to maintain airtightness between them. Maintained. The electric wires 1 are connected to these penetration device modules and introduced into the reactor containment vessel 1. Further, a support tube 7 is provided inside the penetrating sleeve 3, and mV;
ll support and heat shielding. Further, a leak detection tube 8 is connected to the penetration device module 2, and the inside of the H1 corner device module 6 is constantly pressurized via this leak detector 8, and a pressure gauge 9 is connected to this leak detection tube H. In the event that the airtightness is broken within the iimvi module 6, the pressure gauge 9 detects a drop in the internal pressure, thereby detecting that the airtightness has been compromised. The penetrating module 5 is constructed as follows. That is, 10 is a body, and this body 10 has a cylindrical shape, and the leak detection tube 8 is passed through N in an airtight manner. Two ceramic end plates 12, 12 made of an electrically insulating material such as ceramic are provided within the body 10. The outer circumferences of these ceramic end plates 12, 12 are airtightly attached to the inner surface of the body 10 via sealing tubes 18.18 for absorbing differences in thermal expansion. Insertion holes 13, 13 are formed in the center of this ceramic end plate 12.12, and these insertion holes 13.13
Ceramic tubes 14 and 14 are respectively inserted inside.

A solid conductor 17.17 is inserted into each of these ceramic tubes 14.14.

The sealing tube 20.20 provides airtightness between the ceramic end plates 12, 12 and the ceramic tube 14.14, and the ceramic tube 14.14 and the solid conductor 1
7.17 is provided with an airtight seal by a sealing cap 19.19, and these caps 19, 19. The sealed tubes 2'0, 20 are configured to accommodate the differential thermal expansion between the ceramic end plates 12.12, the ceramic tubes 14.14 and the solid conductors 17,17. An intermediate electric wire 15.
It is connected to U5 by a connector 16. Further, the electric wire 1 is connected to the other end of these solid conductors 17.degree. 17 via a connector 16. And the above body 1
0 is filled with an insulating filler 23 made of an electrically insulating synthetic resin material, etc., and the solid conductor 17.
and a ceramic tube 14° 14 etc. are embedded and integrated. In addition, a leak detection hole 22 is provided in the center of the body 10.
is formed, and this leak detection hole 2272 is configured to detect when the leak detection tube 8 is maintained and the airtightness of the ceramic end plate 12, 12 etc. is impaired due to constant pressure inside the body 10. It's hollowed out. By the way, in such a device, a ceramic tube 14.14 is inserted into the insertion hole 13.13 of the ceramic end plate 12.12, and a solid conductor 17.17 is further inserted into the ceramic tube 14.14. Since these are sealed by the sealing tubes 20, 20 and the sealing caps 19 and 19, the structure of this part is complicated, the airtightness is easily lost in this part, and the manufacturing cost is also high. At the same time, this portion becomes larger in diameter, and the interval between the solid conductors 17 and 17 becomes larger, resulting in problems such as an increase in the overall size.

The present invention has been made based on the above circumstances, and its purpose is to provide a current passing device that has a simple structure, high reliability, low manufacturing cost, and can be miniaturized as a whole. There is a particular thing.

The present invention will be explained below according to the embodiments shown in FIGS. 3(2) to 6. FIGS. 3 and 4 show the first embodiment of the present invention.
An example is shown. In the figure, 101 is a reactor containment vessel,
A shielding wall 102 is provided on the outside of the reactor containment vessel 101. Then, the penetration sleeve 10.9 is passed through the reactor containment vessel and the shielding wall 102 in an airtight manner.
is provided. A joint pipe 104 is welded to the outer end of this penetrating sleeve 103, and this joint pipe 104
A header plate 105 is airtightly attached to the end of the header plate 105 .

These penetrating sleeves 103. The joint pipe 104 and the header plate xos (2) form a boundary or airtight wall for this part. A plurality of penetration device modules 106 are provided passing through this header plate 105, and these penetration device modules 10
6 and the header plate 105 is an O-ring 121°1
21 is interposed to maintain airtightness between them. And, 't' wire 11 is connected to these penetration device modules 1.
06 and introduced into the reactor containment vessel 101. Further, a support cylinder 1 is provided in the through sleeve 10.9.
07 is established.

It supports the electric wire 111 and provides heat shielding. In addition, a leakage detection tube 108 is connected to the Ka device module 106, and a leakage detection tube 108 is connected to the Ka device module 106.
The inside of the device module 106 is pressurized, and a pressure gauge 109 is connected to this leakage detection tube 10B, so that if the airtightness is broken in the universal device module 106, the pressure drop inside the device module 106 is detected by the pressure gauge 109. and is configured to detect that the airtightness has been compromised. The penetration state module 106 is configured as follows. In other words, 10 is a body, and this body 11
0 has a circular shape and passes through the header plate 105 in an airtight manner.

And is there ceramic etc. inside this body 110? Two ceramic end plates 112, 112 made of insulating material
is provided. And these ceramic end plates 112
．． The outer periphery of 112 is a sealing tube 11 for absorbing the difference in thermal expansion.
It is airtightly attached to the inner surface of the body 110 via B and 11B. And this ceramic end plate 112
．． Insertion holes 113, 71.9 are formed in the center of 112, and solid conductors 117, 117 are inserted into these 1m insertion holes 113, IJ, 9, respectively. Sealing tubes 120, 120 provide airtightness between the ceramic end plates 1) 2° 112 and the solid conductors 117, 117. These are constructed to absorb the difference in thermal expansion between the ceramic end plates 112 and the solid conductors 117, 117. The sealed tubes 120, 120 are fitted and sealed in the insertion holes 113, 113 of the ceramic end plates 112, 112, and are configured to withstand loading due to the difference in thermal expansion. The opposing ends of the solid conductor 117.degree. 117 are connected by an intermediate electric wire 115.degree. connector 116. Further, the electric wire 111 is connected to the other end portions of these solid conductors 117, 117 via a connector 116. Both ends of the body 110 are filled with an insulating filler 123 made of an electrically insulating synthetic resin material, and the solid conductors 117, 117, etc. are embedded and fixed therein.

In addition, a leak detection hole 122 is provided in the center of the body 110.
is formed, and a leak detection tube 10 is formed in this leak detection hole 122.
8 is connected, and the inside of this body 110 is constantly pressurized, so that it is configured to detect that the airtightness of the ceramic end plate 112 and the like is impaired.

In the first embodiment of the present invention constructed as described above, the magnetic current flows through the solid conductors 117, 117. Electric wire 1 via intermediate current 115
It will be communicated between 11 and 11. and.

The airtightness inside this @i@'JW module 106 is achieved by ceramic end plates 112, 112, sealing cylinder 118°118,
It is maintained by sealed tubes 120,120. And this one is the insertion hole 11 of the ceramic end plate 112゜112.
Since the solid conductors 117, 117 are inserted directly into 3, 11, and V, the structure of this part is simple, there is little chance of hermeticity being compromised, and reliability is high, and manufacturing costs are also reduced. In addition, since the diameter of this portion is small, the interval between the solid conductors 117, 117 can be reduced, and the overall size can be reduced.

Note that the present invention is not limited to the first embodiment described above. For example, as in the second embodiment shown in FIG.
A flange portion 125.125 may be formed at the end of the ceramic end plate 112, and the flange portion 125.125 may be sealed around the insulating filling 123 of the ceramic end plate 112. Further, as in the third embodiment shown in FIG. 6, a fitting protrusion 124° 124 is integrally provided around the insertion holes 113 and 11B of the ceramic end plate 112, and a fitting protrusion 124° 124 is provided on the outer periphery of the fitting protrusion 124° 124. Sealed tube 1
20 and 120 may be fitted and sealed.

Note that the second and third embodiments have the same configuration as the first embodiment except for the above points, and parts corresponding to the first embodiment in FIGS. 715 and 6 are designated by the same reference numerals. The explanation will be omitted.

As mentioned above, the present invention airtightly seals the wall to be penetrated.
1tlj L, a cylindrical body, an end plate made of an electrically insulating material that airtightly closes the inside of the body, an insertion hole formed in the end plate, and an electric wire inserted into the insertion hole at both ends. A solid conductor that is in contact with hjf, and a sealed tube that airtightly closes a gap between the solid conductor and the insertion hole of the end plate.

and an insulating filler made of an electrically insulating material filled in the body and embedding and fixing the solid conductor. Therefore, the structure of the part where this solid conductor meets the end plate Y if iM is simplified, its reliability is the same as above, and manufacturing is also easy and cost is reduced.Furthermore, since the diameter of this part is reduced, the arrangement gap of the solid conductor is reduced. This has great effects, such as making it possible to make the entire structure smaller.

[Brief explanation of drawings]

Fig. 1 and Fig. 2 show a conventional example, Fig. 1 is a longitudinal sectional view of the whole, and Fig. 2 is a cross-sectional view of the welding device module.
It is a diagram. Are figures 3 and 4 trees? Embodiment 4 of the invention is shown, and FIG. 3 is a longitudinal cross-sectional view of the whole, and FIG. 4 is a longitudinal cross-sectional view of a module with a 5-position module. FIGS. and a vertical cross-sectional view of the penetrating device module of the third embodiment. 101... Reactor containment vessel, 103... Penetrating sleeve, 106 River penetrating device module, 110... Body, 1
1. Electric wire, 112. Ceramic end plate (end plate)
, 113... Through hole, 117... Solid conductor, 118
...Sealing cylinder, 123...Insulating filler.

Claims (1)

[Claims] A cylindrical body that airtightly penetrates the wall to be penetrated,
an end plate made of an electrically insulating material that airtightly closes the inside of the body; an insertion hole formed in the end plate; a solid conductor inserted into the insertion hole and connected to an electric wire at both ends;
A sealed tube that airtightly closes the gap between the solid conductor and the insertion hole of the end plate, and an insulating filler made of an electrically insulating material that is filled into the body and embeds and fixes the solid conductor. A wire penetration device characterized by comprising: