JPS5814498A - X-ray device - Google Patents

Abstract

PURPOSE:To increase the safety performance, the life and the reliability of an X-ray device by fitting the cable head of a high-voltage cable into a bushing cylinder provided at the contact part of the high-voltage cable of a high-voltage apparatus so that a space is formed between the said bushing cylinder and the said cable head. CONSTITUTION:A bushing cylinder 14 is inserted into bushing fixing walls 5A and 5B, and is fixed by screwing screw parts 21a of annular spacer screws 21 into screw parts 14b provided on the inner wall of the walls 5A and 5B. A bushing terminal 13 is attached to a closed part 14a of the cylinder 14. The cylinder 14 is fitted with a cable head 11 the end part of which is coated with a soft grease 17, and the cable head 11 is fixed by screwing screw parts 16a of cable fixing metallic members 16 into the screw parts 21a of the fixture walls 5A and 5B. An appropriate space 23 is provided between the cable head 11 and the cylinder 14, and works as a path through which gas generated by the burning of the grease 17 is sent outside the X-ray device.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement in the insulation between a cable head and a bushing tube of a high voltage connection between a special KX@-device and a high-voltage generator.

In general KX-ray equipment, an X-ray tube is housed in an X-ray tube, and a high electric current of 10 to 300 mm is supplied to generate an X-ray. For, engineering! For analysis purposes, etc., the high-voltage generator is housed in a tube container together with the X-ray tube, and
General commercial use of about 0v to 200v □ Small amount of X @ installation WI
As shown in Fig. 1, the connection with the high-voltage device #1 is to guide the pressure on the X-ray tube of the xII tube device I30. It has become.

In addition, generally any high voltage equipment in the high voltage generator 1 and the XII tube device 31 is installed outside to protect the human body from high voltage hazards. One part is at ground potential, and the high voltage part is electrically insulated from the surrounding part via an insulator.

FIG. 2 shows high voltage connections 117A, 7B and C of FIG.

Conventional connection shape for part 8B! It is a new view showing I, and the high voltage cables 4M and 4B have a cable spatula 11 made of a solid insulator at the tip: 1P, and furthermore,
The cable terminal 12 provided at the tip of the bushing terminal 1
5, and high voltage is supplied to the X-ray tube through this part. The bushing terminal 13 is a solid insulator bushing cylinder 14 ID hole bottom Kmlli"MtLC
b11. Hook y f tube 14 ax tube device putushinda fixed wall 5&, 58 jiP and pot, 6BK job. In order to prevent the cable head 11 from falling off, attach the cable grounding fitting 15 to the fixing fitting 16.
Yo J) XM tube! ! Sobutsu Shinda fixed wall 5A, 5B $
P and high voltage generator bushing fixed walls 6A, 68K. The gap KFi between the cable head 11 and the bushing tube 14, and the grease 1
The opening is closed with a backing 18 made of rubber or the like to prevent the grease 17 from flowing out.

If the insulating grease 17 is not sufficiently filled in the high-voltage connections of such high-voltage equipment, the viscosity of the grease, application method, etc. may cause the grease to become uneven, leaving bubbles inside. When connected, excessive force is applied to the high voltage conductive terminal and the high voltage cable titr
It induces creeping discharge between the ground potential part of high voltage equipment,
In such cases, the KM grease burns out and evaporates, increasing the pressure in the gap between the solid insulators, causing the high-voltage cable to escape from the high-voltage equipment and causing the high-voltage cable to escape. Voltage terminals are exposed and dangerous.

To prevent such risks, 1. When connecting high-voltage cables to high-voltage equipment, methods such as using a material with strong mechanical strength for the connection part or adding reinforcing screws to strengthen the fixation are recommended. be. However, it is important to mechanically strengthen the connections so that they do not come off.The pressure when the grease burns out destroys a portion of the solid insulation of the high-voltage equipment, rendering it unusable as well as making the high-voltage equipment unusable. There is a risk that the insulating oil inside may overflow and leak.

Especially medical X-ray equipment Ks? In the case of X-ray tubes, the X-ray tube and the specimen are often used in close proximity, which can lead to accidents such as burns to the specimen due to the insulating oil that has risen in temperature. I'm worried. And remove these drawbacks-j! As a method, there is a structure in which the high voltage equipment and the high voltage cable are integrated and do not use grease, but there are cases where maintenance is required due to the end of life or failure. However, if you want to replace high-voltage equipment and high-voltage cables at the same time, there are drawbacks such as sagging.

This invention was made based on the above-mentioned circumstances, and aims to provide X**- which can supply products that are safe, have a long life, and have extremely high reliability at low cost. It is something.

This invention will be explained with reference to an embodiment showing 111K.

Fig. 3 #i is a sectional view showing an embodiment of the X-ray equipment of the present invention; will be omitted for the sake of detailed explanation.

Said bushing tube 14 bushing fixed walls 5A, 5B! ff 6A, 6.8 K inserted, bushing fixed wall 5A.

Screw W 146 installed on the inner wall of 5B, 6A, and 6B
[The screw 1ls21α of the annular spacer screw 21 is screwed and fixed. A straight terminal 13 is attached to the closing portion 1m of the bushing cylinder 14. Also,
The cable head 11 whose tip is coated with grease 17 is inserted into the bushing tube 14Kk-1, and the cable head 11 is inserted into the bushing tube 14Kk-1 and the screw 181 of the cable fixing fitting 16 is inserted.
6g is screwed into the threaded portions 21eLK of the bushing fixing walls 5A, 5B and 6A, 6B.

The cable terminal 1 of the cable head 11 is connected to the bushing terminal 13 of the bushing tube 14.Furthermore, the cable fixing fitting 16 is connected to one end of the collar 111 of the cable head 11 via a tightening screw 19. An appropriate gap 23 is formed between the cable head 11 and the bushing tube 14, and a closed part of the connection 23 (the tip of the cable head 11) lj is formed as appropriate. The grease 17 is filled and sealed, and the remaining gap 231B is filled with the singing grease 1.
It is designed to act as a passageway for the gas generated by the burnout of No. 7 to escape to the outside.

With this configuration, since the singing grease 17 is applied to the tip of the cable head 11'', creeping discharge caused by the application of high voltage can be suppressed for a long time, and if discharge is induced, it is possible to suppress it for a long time. However, the gas generated by the burnout of the grease 17 is transferred to the bushing cylinder 1.
4 and the cable head 11 through the gap 23 formed between the cable head 11 and the cable head 11.

However, the above embodiment is merely an example, and it goes without saying that each member can be replaced with another member having the same function.

As explained above, 1. According to the high voltage connection state of the X-ray equipment according to the present invention, even if an excessive voltage is applied, the high voltage cable can be safely connected without causing any harm to the human body. Since the voltage cable connection state can be obtained, and there is no risk of damage such as rendering the high voltage equipment unusable, the life of the X1s equipment can be maintained for a long time. Furthermore, it has excellent effects such as being able to supply a highly reliable product at a low cost with an extremely simple structure.

[Brief explanation of drawings]

Figure 1 shows the conventional XI! Figure 2 is a front view showing the connection state of the high voltage cable of the equipment, Figure 2 is a sectional view showing the configuration of the connection part of the conventional high voltage cable, and Figure 3 is the connection state of the high voltage cable using the X-ray apparatus of the present invention. FIG. 1-High voltage generator, 2-X-ray tube, 3/++ X-ray tube power supply, 44.4B-High voltage cable, 5A, 5B -
・・X-ray tube loading bushing fixing amount, 6A, 6B・High voltage generator bushing fixing wall, 7A, 7B・X-ray tube installation cable connection, 8A, 8B, -High voltage generator cable Connection part, 11-cable head, 12
・・・Cable terminal, 13-Bushing terminal・, 1
4...Bushing tube, 15-cable grounding fitting, 1
6.-Cable fixing bracket, 17-.Grease, 18-
=Backing, 19.-Tightening screw, 21..Spacer screw, 23.-Gap. Representative Patent Attorney Kensuke Chika (and 1 other person) 4A,
4B

Claims (1)

[Claims] At least an X-ray tube equipment equipped with high-voltage connections or , the cable head of the high voltage cable is fitted and held in the bushing cylinder of the connection part of the high voltage cable of the high voltage equipment so that a gap communicating with the outside is formed between the two, and the tip of the cable spatula V. An X-ray device characterized in that the gap between the parts is filled with grease to create a space above the gap of the residue.