JPH065382A - X-ray generating device - Google Patents

Abstract

PURPOSE:To facilitate replacement of X-ray tube and restrict the ill influence of insulating oil degrading by coupling a tube pack with the body part of X-ray generating device concerned by a high voltage socket and plug, and thereby embodying the X-ray generating device in a consolidated structure. CONSTITUTION:A tube pack 10 has an independent vessel 10a, in which such components are encapsulated as X-ray tube 1, stator coil 2 for rotating the positive electrode of the X-ray tube 1, insulating oil 8, rubber bellows 3, terminal 13 to be connected to a stator driving power supply, and lead plate 9 for protecting against unnecessary X-rays. The envelope 19a of the body part 19 accommodates transformers 5, 6 to supply a high voltage to the X-ray tube 1 and a rectifier 7, and therein insulating oil is encapsulated. The tube pack 10 and body part 19 are coupled electrically by a high voltage plug 12 and high voltage socket 11 to consolidate the structure of the X-ray generating device. This permits easy replacement of the X-ray tube 1 and precludes the high voltage generating device from being influenced by degradation of the insulating oil 8 resulting from the heat emitted by the tube 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an integrated X-ray generator which is an integrated X-ray tube, high voltage generator and X-ray controller.

[0002]

2. Description of the Related Art Conventional structural examples of an integrated X-ray generator (hereinafter referred to as a monotank) are disclosed in Japanese Utility Model Publication No. 1-208080 and Japanese Utility Model Publication No. 56-54555. Both of them adopt a structure in which an X-ray tube, a high voltage generator, etc. are incorporated together in a single container and filled with insulating oil.

[0003]

The above mono tank is
It is compact and has the advantage of being an integral structure, such as not requiring a high-voltage cable, but when the X-ray tube fails, only the X-ray tube cannot be replaced, and the entire monotank must be replaced. In addition, parts other than the X-ray tube need to be packed, transported, repaired and adjusted for repairing. Further, in the manufacturing process, since the X-ray tube voltage and the X-ray tube current cannot be measured from the high voltage side, there is a drawback that the adjustment error of the X-ray tube voltage and the X-ray tube current becomes large. Further, since the X-ray tube, the high-voltage transformer, the rectifier, etc. are in the same insulating oil, there is a problem that the insulation deterioration of the insulating oil due to the heat generation of the X-ray tube also affects the high-voltage generator and the like.

[0004]

Means for Solving the Problems To solve the above problems, the following means can be achieved. X-ray tube and stator coil required to operate X-ray tube, insulating oil, rubber bellows, terminal for connecting to stator drive power supply, unnecessary X
A storage part (hereinafter referred to as a tube pack) in which parts such as lead plates for line protection are stored in an independent container and a high voltage generator or an X-ray tube such as an X-ray controller. The part that supplies the voltage (hereinafter referred to as the main body part)
A high-voltage plug and a high-voltage socket provided in each part are electrically connected to each other and are integrated in handling and operation (claim 1).

Further, the insulating tubular shapes of the high voltage plug and the high voltage socket are folded back in the diameter direction to shorten the axial dimension (claim 2).

Further, an element for measuring the operating characteristics of the X-ray tube such as the X-ray tube voltage and the X-ray tube current is built in between the tube pack and the main body portion, and the high voltage plug and the high voltage plug are provided. The operating characteristics of the X-ray tube can be measured by inserting a measuring adapter having a socket and connecting each to the high-voltage plug and the high-voltage socket (claim 3).

[0007]

The above-mentioned tube pack can be easily and surely connected to and disconnected from the main body by the high-voltage plug and the high-voltage socket, so that it can be replaced when the X-ray tube has a failure due to its life or the like. Easy to repair. Also,
Since the X-ray tube voltage and the X-ray tube current can be measured on the high voltage side in the manufacturing process, highly accurate adjustment is possible.
Further, the insulation deterioration of the insulating oil due to the temperature rise during the operation of the X-ray tube does not affect the high voltage generator or the like.

Further, since the insulating cylindrical shapes of the high-voltage plug and the high-voltage socket are folded back in the diameter direction, it is possible to prevent the axial dimension from increasing, so that the entire monotank can be downsized.

Also, between the tube pack and the main body,
By inserting a measuring adapter with a built-in element for measuring the operating characteristics of the X-ray tube, it becomes possible to measure the X-ray tube voltage, X-ray tube current, etc. during operation of the X-ray tube. , The characteristics of the X-ray tube can be measured and adjusted very easily, and the measurement accuracy can be improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The tube pack 30 includes an X-ray tube 1, a stator coil 2 for rotating an anode, a stator insulating cylinder for insulating and supporting these, an anode insulating cylinder 4b, a cathode insulating cylinder 4c,
A high voltage plug 12 for introducing a high voltage, a terminal 13 for connecting to a stator drive power source, an insulating oil 8 for insulating and cooling these elements, and a rubber for absorbing a volume change of the insulating oil 8. The bellows 3, the lead plate 9 for protection against unnecessary X-rays, and other elements are enclosed in a square tube-shaped envelope 10a. An independent X-ray generator can be obtained by applying a high voltage necessary and sufficient for obtaining the used X-rays and a low voltage for driving the stator coil 2 from the outside of the tube pack 10.

FIG. 5 shows an example of mounting the radiation window 14 for guiding the utilized X-rays to the outside. The radiation window 14 is made of a plastic having good X-ray transmission, and is provided at a substantially middle portion of the side wall of the tube pack 10. FIG. 6 shows the arrangement when viewed from the end face side in the axial direction of the X-ray tube of FIG. The radiation window 14, the high voltage plug 12 and the terminal 13 are attached so as not to adversely affect each other.

Further, the main body portion 31 is provided with a transformer for X-ray tube filament voltage 5, a high voltage transformer 6, a rectifier 7, a high voltage socket 11 for introducing a high voltage, and for insulating and cooling these elements. The insulating oil 8 and other elements are enclosed inside a main body enclosure 19a having a rectangular shape. An opening for inserting the tube pack 10 into one surface of the main body envelope 19a and a lid 1 for fixing the same.
0b, a screw hole for screwing with the fixing screw 10c is provided. The above-mentioned opening keeps a sufficient gap between the tube pack 10 and the tube pack 10 for inserting and holding the tube pack 10 without rattling, and the high-voltage socket 11 and the high-voltage plug 12 are fitted together. It is assembled with the required dimensional accuracy of at least 0.1 mm in each of the three dimensions required.

2 and 3 show the details of the high-voltage plug 12 and the high-voltage socket 11. FIG. 4 shows details of the fitted state of the high-voltage plug 12 and the high-voltage socket 11. The high-voltage plug 12 and the high-voltage socket 11 are insulated cylinders 1 provided with a fold-back portion in the diametrical direction in order to shorten the axial dimension to secure a creepage distance for insulation.
2a, 11a and contacts 12b, 1 for exchanging high voltage
1b and. High voltage plug 12 and high voltage socket 1
When the contacts 12b and 11b of No. 1 are embedded in the insulating cylinder, the surfaces of the contacts 12b and 11b are in contact with each other when they are in close contact with each other without a gap.
Form it so that a gap of about 5 mm will occur. Further, in order to facilitate the fitting of the two, each of the folds has a tapered shape, the convex portion of each fitting surface is chamfered to about R1, and the concave portion is formed without chamfering.

The high-voltage plug 12 is fixed to the tube pack 10, and the high-voltage socket 11 is fixed to the main body portion 19, and both are fitted as shown in FIG. The high-voltage plug 12 and the high-voltage socket 11 are provided with an O-ring 16 and a snap ring 17, respectively, for the tube pack envelope 10a,
It is fixed to the main body enclosure 19a. A high-voltage insulating grease 15 is applied to the mating surfaces of the two so that no air layer remains between them. The tube pack 10 and the main body portion 19 fitted as described above are joined and fixed by the lid 10b and the fixing screw 10c to form an integrated X-ray generator.

Another embodiment of the present invention is shown in FIG. In this embodiment, a measuring adapter 20 incorporating an element for measuring the operating characteristics of the X-ray tube is inserted between the tube pack 10 and the main body portion 19. Tube pack 10
And body portion 19 is formed as described above. Combine with these
Form the measurement adapter 20 so that it can be fixed,
As shown in FIG. 7, it is inserted between the two. Measuring adapter 2
Inside the 0, a voltage divider 21 and the like are oil-tightly sealed,
It is connected to a measurement terminal 22 that takes out a low voltage for measurement to the outside.

[0016]

The effects of the present invention are as follows. 1. By making the X-ray tube and the part that operates the X-ray tube independent as a tube pack, while maintaining the merit as a monotank that does not require a high-voltage cable, replacement of the X-ray tube for failure or version upgrade etc. At that time, it can be easily replaced. Therefore, it is possible to shorten the operation stop time of the entire device linked to the monotank. 2. High voltage side in the manufacturing process, such as X-ray tube voltage or X
It is possible to measure the tube current and realize highly accurate adjustment. 3. Since the insulating oil between the tube pack and the main body portion is separated, insulation deterioration of the insulating oil due to heat generation of the X-ray tube does not affect the main body portion. 4. By folding back the insulating tubular shape of the high-voltage plug and the high-voltage socket in the diametrical direction, it is possible to prevent an increase in the axial dimension while maintaining the insulation performance, and to reduce the size of the monotank.

[Brief description of drawings]

FIG. 1 shows the structure of a monotank in which a tube pack and a main body are integrated in one embodiment of the present invention.

FIG. 2 shows a cross-sectional view of a high voltage plug.

FIG. 3 shows a cross-sectional view of a high voltage socket.

FIG. 4 is a diagram showing details of a fitted state of a high-voltage plug and a high-voltage socket.

FIG. 5 is a diagram showing an example of attachment of a radiation window to a tube pack.

6 shows an arrangement as seen from the end face side in the axial direction of the X-ray tube of FIG.

FIG. 7 shows another embodiment of the present invention.

[Explanation of symbols]

 1 X-ray tube 2 Stator coil 3 Rubber bellows 6 High voltage transformer 8 Insulating oil 9 Lead plate 10 Tube pack 10a Tube pack envelope 10b Lid 10c Fixing screw 11 High voltage socket 12 High voltage plug 13 Terminal 14 Radiation window 15 Insulation Grease 19 Body part 19a Body envelope 20 Measuring adapter 21 Voltage divider 22 Measuring terminal

Claims (3)

[Claims] 1. A stator coil necessary for rotationally driving an X-ray tube and an anode of the X-ray tube, insulating oil, a rubber bellows, a terminal for connecting to a stator driving power source, a lead plate for protecting unnecessary X-rays, and the like. A storage part (hereinafter referred to as a tube pack) in which parts are stored in an independent container, and a high voltage generator or X
A part that supplies a high voltage to an X-ray tube such as an X-ray controller (hereinafter,
And a main body portion) are electrically coupled by a high-voltage plug and a high-electrical socket provided in each portion, and are integrated in handling operation.
Line generator. 2. The X-ray generator according to claim 1, wherein the insulating cylindrical shapes of the high-voltage plug and the high-voltage socket are provided with folds in the respective diameter directions to shorten the axial dimension. 3. An element for measuring operating characteristics of an X-ray tube such as an X-ray tube voltage and an X-ray tube current is built in between the tube pack and the main body portion, and the high voltage plug and An operating characteristic of an X-ray tube can be measured by inserting a measuring adapter having the high-voltage socket and connecting each via the high-voltage plug and the high-voltage socket. Line generator.