CN103219104A - Neutral beam injection gradient pole voltage-dividing power supply high voltage leading-out wire terminal - Google Patents

Abstract

The invention discloses a neutral beam injection gradient pole voltage-dividing power supply high voltage leading-out wire terminal which comprises a sleeve, wherein the sleeve is made of a cylindrical polytetrafluoroethylene material; the periphery of the sleeve is cut into a projected annular sheet; a central hole through the top of the sleeve is formed in the central position of the bottom of the sleeve, and a high voltage leading-out wire is leaded out from the inner part of the central hole; a top cover is fixedly arranged at the top of the sleeve; an external screw thread is arranged at the lower part of the sleeve; the lower part of the sleeve is in screwed connection with a polytetrafluoroethylene screwed cap through the external screw thread; and rubber seal rings are respectively sleeved between the screwed cap and the sleeve as well as between the top cover and the sleeve. The leading-out wire terminal made of polytetrafluoroethylene is low in price, small in size, light in weight, high in insulation grade and convenient to install, and can be used for a long time; and the rubber seal rings are respectively sleeved between the screwed cap and the sleeve as well as between the top cover and the sleeve, so that the moisture outside is prevented from entering an oil tank through the central hole of the sleeve and the insulating oil is prevented from flowing out from the central hole of the sleeve.

Description

Neutral beam injection gradient pole voltage divider power supply high voltage lead wire terminal

technical field

The present invention relates to the technical field of neutral beam injection power supply, in particular to a neutral beam injection gradient pole voltage divider power supply high-voltage lead wire terminal.

Background technique

The neutral beam injection gradient pole voltage divider power supply is a device for supplying power to the ion source gradient pole. The power supply adopts the resistance voltage division and voltage regulation mode, and has 8 lead wires. The ground voltage is approximately equal to the acceleration pole high voltage power supply for neutral beam injection. The output voltage of the accelerated very high voltage power supply of the positive ion source of the conventional neutral beam implantation system is up to 90kV. Therefore, it is necessary to solve the insulation problem of the 8 leads to the ground. Conventional insulating bushings with a voltage level exceeding 90 kV are all ceramic bushings with large volume and weight; this will increase the manufacturing cost and floor space of the gradient polar voltage divider power supply.

Contents of the invention

The purpose of the present invention is to make up for the defects of the prior art, and provide a small, light and cheap neutral beam injection gradient pole voltage divider power supply high-voltage lead wire terminal.

The present invention is achieved through the following technical solutions:

A high-voltage lead wire terminal for a neutral beam injection gradient pole voltage divider power supply, including a sleeve, the sleeve is made of a cylindrical polytetrafluoroethylene material, and the periphery of the sleeve is cut into a protruding annular piece , so as to increase the surface insulation length, a central hole leading to the top is opened from the center of the bottom of the bushing, and the internal high-voltage lead wire of the gradient pole voltage divider power supply is drawn out from the center hole, and the top of the bushing is fixed with a top cover for fixing For the high-voltage lead wire, the lower part of the bushing is provided with an external thread, and the lower part of the bushing is screwed with a PTFE nut through the external thread, in order to prevent external moisture from entering the oil tank through the center hole of the bushing and insulating oil from flowing out from the center hole of the bushing , There are rubber sealing rings between the nut and the casing and between the top cover and the casing respectively, and the bottom of the casing is inserted into the top cover of the power supply oil tank and fixed by the nut.

The advantages of the present invention are: the lead wire terminal made of polytetrafluoroethylene is cheap, small in size, light in weight, high in insulation level, easy to install, and can be used for a long time. There are rubber sealing rings between the cover and the bushing to prevent outside moisture from entering the oil tank through the center hole of the bushing and insulating oil from flowing out from the center hole of the bushing, which solves the problem of insulation between the high-voltage lead wire of the gradient pole-dividing power supply and the metal oil tank question.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Figure 2 is a cross-sectional view of the casing.

Figure 3 is a schematic diagram of the nut structure.

Detailed ways

As shown in Figures 1, 2, and 3, a high-voltage lead wire terminal of a neutral beam injection gradient pole voltage dividing power supply includes a sleeve 1, and the sleeve 1 is made of a cylindrical polytetrafluoroethylene material , the periphery of the bushing 1 is cut into a protruding annular piece 2, so as to increase the length of the surface insulation, a central hole 3 leading to the top is opened from the center of the bottom of the bushing 1, and a gradient pole partial pressure is drawn from the central hole 3 The high-voltage lead wire inside the power supply, the top of the bushing 1 is fixed with a top cover 4 for fixing the high-voltage lead wire, the lower part of the bushing 1 is provided with external threads, and the lower part of the bushing 1 is screwed with a polytetrafluoroethylene nut 5 through the external thread, In order to prevent outside moisture from entering the oil tank through the center hole 3 of the bushing and insulating oil from flowing out from the center hole 3 of the bushing 1, rubber is respectively set between the nut 5 and the bushing 1 and between the top cover 4 and the bushing 1. The sealing ring 6, the bottom of the sleeve pipe 1 is inserted into the top cover of the power supply oil tank, and fixed by the nut 5.

Claims (1)

1. a neutral beam injects gradient utmost point dividing voltage supply high pressure lead-out wire terminal, it is characterized in that: include sleeve pipe, described sleeve pipe is made by the column type polytetrafluoroethylmaterial material, the periphery of sleeve pipe cuts into the ring segment of protrusion, have the centre bore that leads to the top from the sleeve bottom center position, and in centre bore, draw high-voltage connection, the top of sleeve pipe is fixed with top cover, the sleeve pipe bottom is provided with external screw thread, the sleeve pipe bottom is connected with a polytetrafluoroethylene nut spiral by external screw thread, is being with rubber seal between nut and the sleeve pipe and between top cover and the sleeve pipe respectively.

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