JPS5918828Y2 - High pressure cable socket - Google Patents

Description

[Detailed description of the invention] The present invention relates to an electron beam generation device that applies high voltage to generate an electron beam to perform welding, processing, etc., and in particular, the electron beam generation system including a filament, grid, and anode. This invention relates to a socket for a high voltage cable for supplying high voltage from a voltage generating power source.

As is well known, since an electron beam generator generates a high-energy electron beam, it is necessary to apply a high voltage between the filament and the anode.

For this reason, a so-called three-layer cable is used as a high-voltage cable, which includes three conducting wires with sufficient consideration for dielectric strength, heat, etc.

However, when this type of high-voltage cable is subjected to mechanical twisting, bending, or other forces, the insulating material inside the high-voltage cable may crack, become fatigued, and be damaged, resulting in a decrease in dielectric strength and eventually causing dielectric breakdown. .

As shown in FIG. 1, when the high voltage generation power source and the electron beam generation system move relatively, that is, the high voltage generation power source
and the electron beam generation system 2 are connected by a high voltage cable 3, and when the electron beam generation system 2 moves in the direction shown by the arrow 4, the high voltage cable 3 of each of the high voltage generation power supply 1 and the electron beam generation system 2 is connected. At the positions of the receiving ends 5 and 6, the high voltage cable is subjected to stress as it receives rotational forces in the directions indicated by arrows 7 and 8, respectively.

Therefore, the dielectric strength of the high voltage cable often deteriorates at the receiving ends 5 and 6.

An object of the present invention is to provide a rotatable socket for a high voltage cable, which eliminates mechanical torsion stress applied to the high voltage cable and prevents deterioration of dielectric strength.

According to the present invention, a socket for a high voltage cable is obtained which includes a socket part for holding a high voltage cable, a rotation mechanism for freely rotating the socket part, and a housing for supporting the socket part and the rotation mechanism.

The present invention will be explained below with reference to the embodiment shown in FIG.

3 is a high voltage cable, the tip of which is inserted into a high voltage cable socket part 11 made of acrylic.

The tip of the high voltage cable 3 is the pin 13 of the filament conductor.
It has a pin 14 for the grid conductor (there is one other pin not shown), and these pins 13 and 14 are
The receiver provided at the bottom of the high voltage cable socket part 11 is inserted into the side sockets H5, 16 (there is one other socket, not shown).

Socket) 15. Flexible conductor 1 is attached to the tip of 16.
A high voltage that is negative with respect to the ground potential is applied to the conducting wire 18 from a high voltage generating power source, and a heating current for the filament is supplied to the conducting wire 17.

The high voltage cable 3 is fixed to the high voltage cable receiving part 11 at the flange portion 12 so as not to be eccentric.

Bearings 20.21 are mounted on the face plate 19 on the high voltage generating power source.
The first housing 22 and the second housing 23 are fixed, and when a torsional force is applied to the high voltage cable 3 about its axis 24, the high voltage cable
0.21, the first housing 22 and the high-voltage cable receiving part 11 rotate about the shaft 24, and the high-voltage cable 3 itself is not subjected to strain such as mechanical twisting.

Parts 25, 26, 27, and 28 are retaining mechanisms for the bearings 20.21.

According to the present invention, on the contrary, mechanical forces such as twisting and expansion/contraction are applied to the conductor wires 17 and 18, but this conductor does not require consideration for special dielectric strength like the high-voltage cable 3. , the conductors 17 and 18 are arranged so that they do not cross each other or become entangled, and that they maintain sufficient distance between each other and sufficient length to allow for free expansion and contraction, taking into consideration the dielectric strength against the applied high voltage. This allows the use of normally used vinyl copper wires, flexible conducting wires, etc., and prevents deterioration of dielectric strength due to mechanical fatigue and damage caused by twisting, expansion and contraction of the conducting wires 17 and 18. It's not a problem.

As in the present invention, the socket part 11 of the high voltage cable 3. First housing 22, bearings 20, 21. The socket consisting of the second housing 23, the holding mechanisms 25, 26, 27 and 28, and the flange part 12 can remove the stress applied to the high voltage cable, and reduce the dielectric strength due to fatigue and damage caused by the stress of the high voltage cable. Deterioration can be prevented.

In addition, in Fig. 2, the high voltage cable socket on the high voltage generation power supply side is explained as being rotatable, but the same effect can also be achieved by making the high voltage cable socket on the electron beam generating system side rotatable. It would be more effective if both the high-voltage sockets on the high-voltage power supply and electron beam generation system sides could be rotated.

As described above, according to the present invention, it is possible to eliminate cracks and damage to the high voltage cable insulation due to mechanical twisting force applied to the high voltage cable, and prevent deterioration of the dielectric strength of the high voltage cable due to these causes. It is extremely useful when applied to equipment.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram for explaining the present invention, and FIG. 2 is a sectional view of one embodiment of the present invention. 1 is a high voltage generation power supply, 2 is an electron beam generation system, 3 is a high voltage cable, 11 is a high voltage cable socket component, 17 is a filament conductor, 18 is a grid conductor, 20 and 21 are bearings, and 22 is a first Housing 23 indicates a second housing.

Claims (1)

[Scope of utility model registration request] A socket component that holds the tip of a high-voltage cable and has a terminal that makes an electrical connection with the cable, a flexible conductor that is individually connected to the terminal, and a socket component that is fixed to the socket component. A high-voltage cable socket comprising a first housing and a second housing rotatable relative to the first housing via a bearing.