JP2000245036A - Wire through-passing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire through-passing apparatus for passing a wire through without cutting the wire. SOLUTION: A wire through-passing apparatus has a nozzle 2 for passing a wire through, and a blind plate 4 is mounted on a flange 3 of the nozzle 2. On an opposite face to the flange 3 and the blind plate 4, a tube-shaped opening 11 is provided with its center at the opposite face. The tube-shaped opening 11 is arranged radially with its axis in parallel with the opposite face. A through-passing body 12 made of elastic material, in which a wire 7 is passed through, is provided in the opening 11. A gasket 14 made of two elastic bodies is provided on the opposite face to the flange 3 and the blind plate 4. The gasket 14 is put with the through-passing body 12 in between at the opening 13, and the flange 3 and the blind plate 4 are joined with a blot.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire penetrating device in which electric wires penetrate a wall or the like having a pressure difference in an airtight state.

[0002]

2. Description of the Related Art In a vacuum furnace or a pressurized furnace pressurized with an inert gas, a thermocouple, a signal line in the furnace, a power supply cable to the furnace, and the like penetrate the furnace wall. (Referred to as feedthrough). FIG. 4 shows a wire penetration device of a device for evacuating the pressure vessel to reproduce an ultra-high altitude state and test an aircraft engine. The pressure vessel 1 is provided with a nozzle 2, a blind plate 4 is attached to a flange 3 of the nozzle 2 with bolts 5, an electric wire penetrating device 6 is attached to the blind plate 4, and a thermocouple, a measurement signal line, and a container 1 are provided.
An electric wire 7 such as a power supply cable penetrates the inside.

FIG. 5 shows an example of a commercially available wire penetration device. It has a gland structure that is screwed to a wall or blind plate, and is compact and applicable to a wide pressure range. Install female threads on the wall or blind plate and screw in the body to mount. Extend the penetrating wires a little longer at both ends of the wire penetrating device, and inside and outside the furnace or pressure vessel, thermocouple wires, compensating wires,
Alternatively, it is a method of connecting to an electric wire. In this method, a penetration wire, a seal member, and an insulating material are inserted, and the cap is screwed into the seal member.

[0004]

The electric wire penetration device shown in FIG. 5 has the following problems. Since the electric wires are connected to the penetrating wires before and after the electric wire penetrating device, cutting and connection work are required. When a thermocouple is used, the through wire and the thermocouple wire are joined by different kinds of metal, so that a temperature change at the connection causes a temperature measurement error. It is not easy to add a through wire.

The present invention has been made in view of the above problems, and has as its object to provide an electric wire penetrating device which can penetrate an electric wire without cutting it and can be easily added.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a blind plate is mounted on a flange of a nozzle.
On the opposing surface of the flange and the blind plate, a cylindrical opening having a center substantially parallel to the opposing surface is provided radially with its axis parallel to the opposing surface, and the opening has an elastic wire through which an electric wire passes. A penetrator made of a body is provided, and a gasket made of two elastic bodies is provided on the facing surface of the flange and the blind plate, and the gasket is provided with the penetrating body interposed at the opening, The flange and the blind plate are joined by bolts.

The electric wire passes through an elastic penetrating body, which is sandwiched between two elastic gaskets and disposed in the opening. The flange and the blind plate are bolted with the gasket therebetween. Therefore, the electric wire can penetrate along the facing surface between the flange and the blind plate while keeping the inside of the nozzle airtight. With such a structure, the electric wire can be penetrated without cutting.

According to the invention of claim 2, the penetrating body is divided into two parts by a plane parallel to the axial direction.

By dividing the penetrating body into two parts, the operation of passing the electric wire through the penetrating body is simplified.

According to the third aspect of the present invention, the shapes of the penetrating body and the opening are tapered.

When the inside pressure of the nozzle is lower than that of the outside, the penetrating body is pushed into the nozzle side by the external pressure if it is tapered so that the diameter on the nozzle side becomes small, but does not come off. Further, when the inside of the nozzle is higher in pressure than the outside, the penetrating body is pushed outward by the internal pressure if it is tapered so that the diameter on the nozzle side increases, but does not come off.

In the invention of claim 4, there are a plurality of the penetrating bodies and the openings, and at least one of the penetrating bodies is filled with a solid body instead of the electric wire.

[0013] A penetrating body filled with a solid body is used as a spare penetrating part instead of the electric wire, and when an additional penetrating electric wire occurs, the solid body is removed and the electric wire is inserted to meet the additional demand. .

In the invention of claim 5, there are a plurality of the penetrating bodies and the openings, and at least one of the penetrating bodies is a solid body without passing the electric wire.

[0015] The solid penetrating body is set as a spare penetrating portion, and when an additional penetrating wire is generated, the solid penetrating body is removed and a penetrating body through which the electric wire passes is inserted. It can respond to additional requests.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1A and 1B show an electric wire penetration device of the present embodiment, in which FIG. 1A is a cross-sectional view, FIG. 1B is a cross-sectional view of FIG. 1A along XX, and FIG. 2 is a cross-sectional view of FIG. FIG.

The nozzle 2 is provided with a flange 3 which is fastened by bolts 5 via two gaskets 14 made of an elastic material such as rubber. On the opposing surface of the flange 3 and the blind plate 4, a cylindrical opening 11 is provided radially from the center of the nozzle 2 with its axis parallel to the opposing surface. A penetrating body 12 formed of a cylinder having a diameter smaller than the diameter of the opening 11 and made of an elastic material such as rubber through which an electric wire penetrates is disposed in the opening 11. At the position of the opening 11, the two gaskets 14 pass through the opening 11 with the penetrating body 12 interposed therebetween and are arranged in a ring shape. In this state, bolt hole 1 of flange 3 and blind plate 4
The inside of the nozzle 2 can be kept airtight by tightening the bolt 5 through the bolt 5.

As shown in FIG. 1 (B), when a solid body 13 having substantially the same diameter as the electric wire 7 is inserted in the penetrating body 12 in place of the electric wire 7 and the penetrating electric wire is added. By replacing the solid body 13 with the electric wire 7, it is possible to easily respond to the additional request. The penetrating body 12 is replaced with a solid penetrating body 12a, and when an additional penetrating electric wire is generated, the solid penetrating body 12a is connected to the electric wire 7a.
By replacing the penetrating body 12 with the groove, it is possible to easily respond to the additional request.

FIG. 3 shows a modification of the penetrating body 12. The penetrating body 12 and the opening 11 are tapered. When the pressure inside the nozzle 2 is lower than the outside, the taper is tapered so that the diameter on the nozzle side becomes smaller, and the penetrating body 12 is pushed into the nozzle side by external pressure. However, it is prevented from slipping into the nozzle side. When the pressure inside the nozzle 2 is higher than that of the outside, the nozzle 2 is tapered so that the diameter on the nozzle side becomes large, and the penetrating body 12 is pushed outward by the internal pressure, but is prevented from being pulled out. In FIG. 3, the case of both tapers is shown for convenience, but one of the nozzles 2 is provided with a penetrating body 12 having one of the tapered portions.

[0020]

As described above, according to the present invention, a radial opening is provided on the facing surface of the nozzle flange and the blind plate, and a penetrating body through which the electric wire passes is provided in the opening, and two gaskets are used. Since the flange and the blind plate are bolted with the penetrating body interposed therebetween, the electric wire can be penetrated without cutting. Further, by arranging the dummy penetrating body, it is possible to easily cope with the addition of the penetrating electric wire.

[Brief description of the drawings]

1A and 1B show an electric wire penetration device of the present embodiment, in which FIG. 1A is a cross-sectional view, and FIG. 1B is a cross-sectional view of FIG.

FIG. 2 is a sectional view taken along line YY of FIG.

FIG. 3 is a view showing a modified example of the penetrating body.

FIG. 4 is a diagram showing a state where a nozzle of a pressure vessel is equipped with an electric wire penetrating device.

FIG. 5 is a diagram showing an example of a conventional wire penetration device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pressure container 2 Nozzle 3 Flange 4 Blind plate 5 Bolt 6 Electric wire penetration device 7 Electric wire 11 Opening 12 Penetration body 12a Solid penetration body 13 Solid body 14 Gasket 15 Bolt hole

Claims (5)

[Claims] 1. An electric wire penetrating device, wherein a blind plate is attached to a flange of a nozzle, and a cylindrical opening whose center is substantially opposite to the opposed surface of the flange and the blind plate is opposed to the opposite surface of the flange and the blind plate. A gasket made of two elastic bodies is provided on the opening parallel to the surface and radially provided, and a penetrating body made of an elastic body through which an electric wire penetrates is provided in the opening, and a flange and a blind plate facing each other. The gasket is disposed at the opening with the penetrating body interposed therebetween, and the flange and the blind plate are joined by bolts. 2. The electric wire penetration device according to claim 1, wherein the penetration body is divided into two parts by a plane parallel to the axial direction. 3. The electric wire penetration device according to claim 1, wherein the shape of the penetrating body and the opening is tapered. 4. The electric wire penetration device according to claim 1, wherein there are a plurality of said penetrating bodies and openings, and at least one of said penetrating bodies is filled with a solid body instead of an electric wire. 5. The electric wire penetration device according to claim 1, wherein there are a plurality of said penetrating bodies and openings, and at least one of said penetrating bodies is a solid body without passing through an electric wire.